DrugBank ID: db01109
DrugCentral: heparin
Synonymous :eparina | heparina | heparine | heparinic acid | heparinum | unfractionated heparin

Drug Sentece Context

Table 1. Analysis of context sentence of heparin gene in 208 abstracts.

pmid sentence
32196410 Combined with the published literature, the potential pathogenesis of COVID-19 is inferred, and the treatment recommendations for giving high-doses intravenous immunoglobulin and low-molecular-weight heparin anticoagulant therapy to severe type patients are proposed.
32208840 Furthermore, he observes the significant abnormality of coagulation function and proposes that the early intravenous immunoglobulin and low molecular weight heparin anticoagulation therapy are very important.
32220112 A relatively high mortality of severe coronavirus disease 2019 (COVID-19) is worrying, the application of heparin in COVID-19 has been recommended by some expert consensus due to the risk of disseminated intravascular coagulation and venous thromboembolism. […] The 28-day mortality between heparin users and nonusers were compared, also in different risk of coagulopaphy which was stratified by the sepsis-induced coagulopathy (SIC) score or D-dimer result. […] There were 449 patients with severe COVID-19 enrolled into the study, 99 of them received heparin (mainly with low molecular weight heparin, LMWH) for 7 days or longer. […] No difference on 28-day mortality was found between heparin users and nonusers (30.3% vs 29.7%, P=0.910). […] But the 28-day mortality of heparin users were lower than nonusers In patients with SIC score ≥4 (40.0% vs 64.2%, P=0.029), or D-dimer > 6 fold of upper limit of normal (32.8% vs 52.4%, P=0.017).
32220276 D-dimer and FDP levels increased progressively when COVID-2019 exacerbated, and 4 patients were diagnosed with definite disseminated intravascular coagulation (DIC). 6 patients received low molecular weight heparin (LMWH) treatment, after which their D-dimer and FDP decreased, but there was no significant improvement in clinical symptoms. 5 patients died finally and the median time from acro-ischemia to death was 12 days. Conclusions: The existence of hypercoagulation status in critical COVID-2019 patients should be monitored closely, and anticoagulation therapy can be considered in selected patients.
32239799 Coagulopathy in corona virus infection has been shown to be associated with high mortality with high D-dimers being a particularly important marker for the coagulopathy.1 In the latest paper from the same group, the use of anticoagulant therapy with heparin was shown to decrease mortality as well. 2 This is especially so in patients i) who have met the sepsis induced coagulopathy (SIC) criteria ≥4 (40.0% vs 64.2%, P=0.029) compared to those with SIC score <4 (29.0% vs 22.6%, P=0.419).or ii) with markedly elevated D-dimer (greater than six-fold at the upper limit of normal).
32246317 The 28-day mortality of heparin users were lower than nonusers In COVID group with D-dimer > 3.0 μg/mL (32.8% vs.
32282949 COVID-19 infected patients whatever hospitalized or ambulatory are at high risk for VTE and an early and prolonged pharmacological thromboprophylaxis with low molecular weight heparin is highly recommended.
32294289 In this retrospective analysis, conducted at the Tongji Hospital of Wuhan, China, it is reported that heparin treatment reduces mortality in subjects affected by severe COVID-19 who have “sepsis-induced coagulopathy”. […] The Authors of this study also reported that, among subjects not treated with heparin, mortality raised according with D-dimer levels. […] Of note, patients that received heparin in this study were mostly treated with enoxaparin, at the thromboprophylactic dose of 40-60 mg/day, for at least 7 days.
32297089 In consideration of the pharmacological characteristics of oral anticoagulant drugs, the multiple pharmacological interactions due to the treatment of acute disease and the possible necessity of mechanical ventilation with hospitalization in intensive-care units, we suggest replacing oral anticoagulant therapies (VKA and DOAC) with parenteral heparin to avoid the risk of over/under treatment.
32302448 Ten patients were followed in the subsequent 7 days, after increasing the dose of low molecular weight heparin, antithrombin levels correction, and clopidogrel in selected cases.
32302462 While we agree that this interim guidance addresses important considerations for monitoring the disease process, we believe that the proposed treatment strategy of prophylactic low molecular weight heparin (LMWH) to treat severe COVID-19 coagulopathy is an unconvincing strategy. […] We address this concern with the existing data on the severe hypercoagulable state of COVID-19 victims and advocate for consideration of systemic anticoagulation with unfractionated heparin to prevent life threatening micro- and macrovascular thrombosis to mitigate their associated consequences, up to and including progression of respiratory and organ failure.
32329246 Prophylaxis treatment of COVID-19 patients with low molecular weight heparin (LMWH) is important to limit coagulopathy.
32330308 Importantly however, Caucasian COVID19 patients on low molecular weight heparin thromboprophylaxis rarely develop overt disseminated intravascular coagulation (DIC).
32335456 We suppose that host cell proteases including furin (as expressed highly in lungs), factor Xa and cathepsin are possible targets to decrease viral burden, therefore unfractioned heparin and low molecular weight heparin-LMWH (specifically dalteparin and tinzaparin for their anti inflammatory action) can be potential inhibitors of multiple endoproteases involved in virus infectivity. […] Our hypothesis needs to be tested in in vitro and clinical studies, however as we are in an urgent situation as the burden of SARS-CoV2 is increasing all around the world, we recommend the usage of unfractioned heparin or LMWH in intensive care unit (ICU) and non-ICU hospitalized patients with the risk-benefit judgement of the clinician.
32345864 Thoracic computed tomography (CT) and oropharyngeal swabs confirmed that they were positive for COVID-19, requiring hospitalization and prophylaxis with low-molecular-weight heparin.
32360432 Antiretroviral therapy and prophylactic low molecular weight heparin treatment were initiated.
32360679 Although successful revascularization was not significantly associated with the postoperative use of intravenous heparin (64.7% vs 83.3%; P = .622), no patient who had received intravenous heparin required reintervention. […] The use of continuous postoperative systemic heparin infusion was significantly associated with survival (0% vs 57.1%; P = .042). […] The use of prolonged systemic heparin might improve surgical treatment efficacy, limb salvage, and overall survival.
32364677 A liver and kidney transplant patient with SARS-CoV-2 pneumonia without respiratory failure was treated in a clinical multimodal strategy consisting of symptomatic support therapy, immunosuppression reduction, use of anti-coronavirus drugs and heparin leading to a progressive improvement of patient symptoms till discharge.
32397399 Using propensity scores, the 21 patients who received TCZ were matched to 21 patients who received SOC (a combination of hydroxychloroquine, azithromycin and prophylactic dose of low weight heparin).
32399449 Deep vein thrombosis and pulmonary embolism can occur in patients with COVID-19 pneumonia.Low-molecular-weight heparin prophylaxis does not decrease the risk of venous thromboembolism (VTE) in COVID-19 pneumonia.In the presence of clinical signs and/or suspicion of VTE, compression ultrasound and echocardiography should be always performed, irrespective of disease stage.
32399456 A 52-year-old patient with SARS-CoV-2 was diagnosed with interstitial pneumonia and treated with darunavir/ritonavir, hydroxychloroquine, azithromycin and low molecular weight heparin (LMWH).
32408391 A recent paper by Tang et al. [2] in this journal reported that heparin treatment reduced mortality of COVID-19 patients with elevated D-dimer; similar preliminary results have been reported elsewhere [3].
32415902 Recent studies have also reported and advised on the use of prophylactic Low Molecular Weight Heparin (LMWH) in COVID-19 patients, to prevent the severe outcomes associated with thromboembolic complications.
32418066 The correct article title is “Venous Thromboembolism and Heparin Use in COVID-19 Patients: Juggling between Pragmatic Choices, Suggestions of Medical Societies and the Lack of Guidelines”.
32423903 We describe three cases of thromboembolism refractory to heparin treatment, the incidence of VTE in an inpatient cohort, and a case-control study to identify risk factors associated with VTE.
32425013 Anticoagulants, mainly low-molecular-weight heparin (LMWH), should be tailored in patients meeting sepsis induced coagulopathy (SIC) criteria or with markedly elevated D-dimer.
32426897 Recent reports published in Thrombosis and Haemostasis show that treatment with low-molecular weight heparin (LMWH) decreases mortality in critically ill patients with sepsis-induced hypercoagulation, and thus argue for prophylactic administration of the anticoagulant. […] In addition, the authors point to non-anticoagulant activities of heparin, in particular anti-inflammatory effects with potential to prevent deterioration of the disease. […] We would like to use this opportunity to clarify the biochemical background of the diverse activities of heparin, and further, how this information may be exploited to generate more efficient treatment of the viral infection. […] Mechanisms to consider relate to the functional roles of proteins interacting with heparan sulfate (HS), a polysaccharide closely related to heparin.
32445030 Sixthly, whenever possible, oral anticoagulation should be converted to parental heparin.
32445064 In a cohort of 69 intensive care unit (ICU) patients we investigated for evidence of heparin resistance in those that have received therapeutic anticoagulation. 15 of the patients have received therapeutic anticoagulation with either unfractionated heparin (UFH) or low molecular weight heparin (LMWH), of which full information was available on 14 patients. […] Heparin resistance to UFH was documented in 8/10 (80%) patients and sub-optimal peak anti-Xa following therapeutic LMWH in 5/5 (100%) patients where this was measured (some patients received both anticoagulants sequentially). […] In conclusion, we have found evidence of heparin resistance in critically unwell COVID-19 patients.
32447121 Intra-arterial fibrinolysis and intravenous heparin infusion did not lead to complete recanalization of the tibial arteries, which were successfully treated by surgical embolectomy.
32447934 Low molecular weight heparin (LMWH) was administrated in 6 patients, which reduced D-dimer and FDP rather than improved clinical symptoms.
32450344 All controls were receiving prophylactic or therapeutic dose heparin, according to local standard operating procedures.
32451823 D-dimer level-guided aggressive thromboprophylaxis regimens using higher doses of heparin should be evaluated in prospective studies.
32459790 Also, four children received heparin.
32463186 Two of the cases occurred despite early institution of standard dosage of low molecular weight heparin thromboprophylaxis, and in one case, pulmonary embolism was diagnosed during the convalescent phase of an otherwise benign COVID-19 disease course.
32467443 In all hospitalized patients, thromboprophylaxis using low-molecular-weight heparin is currently recommended.
32470198 I thank Lindahl and Li for their thoughtful comments on the non-anticoagulant properties of heparin.1 Heightened awareness of hypercoagulability has made heparin part and parcel of the COVID-19 management algorithms. […] In addition, reports of prophylactic anticoagulation failure have triggered several trials where escalated doses of heparin are compared with standard doses with the aim of preventing thrombotic complications. […] At this juncture, we do need to consider where do the non-anticoagulant properties of heparin fit in the COVID-19 clinical context?
32471650 Six out of 7 patients were treated with unfractionated or low molecular weight heparin with clinical benefit within few days; one patient needed systemic thrombolysis (death from hemorrhagic complication).
32473596 In this article by the Global COVID-19 Thrombosis Collaborative Group, we describe novel dosing approaches for commonly used antithrombotic agents (especially heparin-based regimens) and the potential use of less widely used antithrombotic drugs in the absence of confirmed thrombosis.
32476080 This study investigates the association between the treatment with heparin and mortality in patients admitted with Covid-19. […] The following variables were extracted for this study: age, gender, temperature, and saturation of oxygen on admission, treatment with heparin, hydroxychloroquine, azithromycin, steroids, tocilizumab, a combination of lopinavir with ritonavir, and oseltamivir, together with data on mortality. […] Heparin had been used in 1734 patients. […] Heparin was associated with lower mortality when the model was adjusted for age and gender, with OR (95% CI) 0.55 (0.37-0.82) p = 0.003. […] The association between heparin and lower mortality observed in this study can be acknowledged by clinicians in hospitals and in the community. […] Randomized controlled trials to assess the causal effects of heparin in different therapeutic regimes are required.
32476308 A proper combination of antiviral agents, immune modulators such as prednisolone, and anticoagulants such as heparin and anti-C5a antagonists could be employed to minimize lung damage and prevent systemic involvements.
32479921 One of these patients was treated with therapeutic doses of low-molecular-weight heparin, after which no further deterioration in kidney function was observed.
32493073 In this report, we present a case of a 57-year-old woman who presented to the clinic’s infectious department with swelling, pain, warmth, and redness in the left leg who was treated with therapeutic heparin.
32504106 All inpatient CoViD-19 patients should receive thrombosis prophylaxis with low molecular weight heparin.
32510771 We reduced immunosuppressive regimen in all these patients, typically holding the antiproliferative agent and augmenting steroids; everybody received hydroxychloroquine, initial empiric antibiotic treatment with piperacillin/tazobactam, and high-dose low molecular weight heparin.
32515570 In patients with COVID-19 who are suspected of VTE or in whom the diagnosis is confirmed, parenteral therapy with low-molecular-weight heparin should be initiated in the absence of contraindications. […] If heparin-induced thrombocytopenia is suspected, nonheparin anticoagulants should be used such as bivalirudin or fondaparinux.
32516124 Following 6 weeks of therapeutic dose low-molecular-weight heparin (LMWH) treatment, the cancerous colonic section was resected.
32516429 The most commonly used in-hospital anticoagulants, unfractionated heparin (UFH) and low molecular weight heparin (LMWH), require antithrombin (AT) to exert their anticoagulant effect (Bussey and Francis 2004).
32519894 Observed hypercoagulability in COVID-19 patients has created debate within the critical care community on the therapeutic utility of heparin. […] We seek to provide an overview of the data supporting the therapeutic use of heparin, both unfractionated and low molecular weight, as an anticoagulant for the treatment of SARS-CoV-2 infection. […] Additionally, we review preclinical evidence establishing biological plausibility for heparin and synthetic heparin-like drugs as therapies for COVID-19 through anti-viral and anti-inflammatory effects. […] Finally, we discuss known adverse effects and theoretical off-target effects that may temper enthusiasm for the adoption of heparin as a therapy in COVID-19 without confirmatory prospective randomized controlled trials. […] Despite previous failures of anticoagulants in critical illness, plausibility of heparin for COVID-19 is sufficiently robust to justify urgent randomized controlled trials to determine the safety and effectiveness of this therapy.
32526092 Emerging evidence suggests that the use of heparin in these patients could be associated with lower mortality[2].
32526252 Respiratory-support was necessary in 71%, 52% received antivirals, 80% heparin.
32526763 In our opinion, the use of heparin could play a crucial role in these patients. […] In fact, recent studies have shown that heparin, the most commonly used anticoagulant during HD procedures, had anti-inflammatory properties and a direct antiviral action, due to its ability to prevent SARS-CoV-2 pseudovirus entry into host cells. […] These activities, together with its anticoagulant action, could explain the ability of heparin to ameliorate COVID-19 clinical course.
32531538 Hesperidin mixture with diosmin co-administrated with heparin protect against venous thromboembolism which may prevent disease progression.
32532939 The thrombotic phenomena described in the pulmonary vascular bed of patients with severe COVID-19 suggest the administration of low-molecular weight heparin (LMWH) as standard measure in hospitalized patients with COVID-19.
32534175 Since high mortality rates from sepsis induced DIC due to COVID-19 infection has also been associated with thrombotic events and elevated levels of D-dimer, randomized controlled trials of using anticoagulant therapy with heparin is urgently required. […] The use of acetazolamide with or without sildenafil also needs to be explored with or without heparin, since increased oxygen delivery to vital organs through prevention of thrombosis/pulmonary emboli along with carbonic anhydrase inhibition may help increase oxygenation and prevent adverse clinical outcomes.
32542212 Recent evidence reports that the use of low-molecular-weight heparin reduces mortality in patients with severe coronavirus with coagulopathy. […] Although the full scope of the benefits from heparin for COVID-19 patients is unfolding, encouraging clinical data suggest that heparin-like molecules may represent a useful approach to treat or prevent severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection. […] The intent of this article is to offer our opinions on the mechanism(s) by which heparin may attenuate the course of SARS-CoV-2 infection. […] Furthermore, we propose a novel strategy to treat or prevent SARS-CoV-2 infection using “designer” heparin molecules that are fabricated using a synthetic biology approach.
32550069 Due to the failure of patients to respond to the prophylactic doses of heparin recommended by ISTH, higher doses of heparin may be necessary to achieve adequate anticoagulation. […] Patients’ resistance to prophylactic doses of heparin could be due to low levels of anti-thrombin and high levels of fibrinogen, which would reinforce the use of therapeutic doses of heparin in the early stages of hospitalization. […] The review also compares low-molecular-weight heparin (LMWH) and unfractionated heparin (UFH) as anticoagulant choices for COVID-19 patients. […] New anticoagulant, nafamostat, used in Japan is also discussed as a possible potentiate for heparin therapy.
32555568 Case 3: a 77-year-old man with SARS-CoV-2 pneumonia who developed a venous thromboembolic event despite thromboprophylaxis with low molecular weight heparin.
32556875 These studies all included different interventions (thromboprophylaxis with unfractionated heparin (UFH) or low molecular-weight heparin (LMWH); an intensive thromboprophylaxis protocol with LMWH, antithrombin, and clopidogrel; and salvage therapy with tissue plasminogen activator and heparin).
32560658 The impact of obesity in severe COVID-19 has also been highlighted.In this context, standard doses of low molecular weight heparin (LMWH) may be inadequate in ICU patients, with obesity, major inflammation, and hypercoagulability. […] In all obese patients (high thrombotic risk), adjusted prophylaxis with intermediate doses of LMWH (e.g., enoxaparin 4000 IU/12 h SC or 6000 IU/12 h SC if weight > 120 kg), or unfractionated heparin (UFH) if renal insufficiency (200 IU/kg/24 h, IV), is proposed. […] In all these situations, therapeutic doses of LMWH, or UFH in case of renal insufficiency with monitoring of anti-Xa activity, are proposed.In conclusion, intensification of heparin treatment should be considered in the context of COVID-19 on the basis of clinical and biological criteria of severity, especially in severely ill ventilated patients, for whom the diagnosis of pulmonary embolism cannot be easily confirmed.
32560665 Entanglement between inflammation and coagulation and resistance to heparin provide a rationale to consider other therapeutic approaches in order to preserve endothelial function and limit microthrombosis, especially in severe forms. […] These strategies include nebulized heparin, N-acetylcysteine, plasma exchange and/or fresh frozen plasma, plasma derivatives to increase the level of endogenous anticoagulants (tissue factor pathway inhibitor, activated protein C, thrombomodulin, antithrombin), dipyridamole, complement blockers, different types of stem cells, and extracellular vesicles.
32561465 Heparin, clinically used as an anticoagulant, has also anti-inflammatory properties including binding of inflammatory cytokines, inhibition of neutrophil chemotaxis, protection of endothelial cells and a potential antiviral effect. […] We hypothesized that low molecular weight heparin (LMWH) may attenuate cytokine storm in COVID-19 patients therefore LMWH could be a valid adjunctive therapeutic drug for the treatment of COVID-19 pneumopathy. […] In this paper we review potential mechanisms involved in coagulation impairment following viral infection and the possible role of heparin in the treatment of COVID-19 patients.
32562915 In the absence of a therapy of proven efficacy, current management consists of off-label or compassionate use therapies based on antivirals, antiparasitic agents in both oral and parenteral formulation, anti-inflammatory drugs, oxygen therapy and heparin support and convalescent plasma.
32569013 Low molecular weight heparin appears to be associated with good prognosis in COVID-19 patients and has the ability to reduce coagulation and inflammation markers.
32569708 The inflammatory phase includes therapeutic options like Tocilizumab, Anakinra, Baricitinib, Eculizumab, Emapalumab and Heparin.
32570240 Retroviral therapy, antibiotics, heparin, and chloroquine were prescribed at the beginning.
32581015 Anticoagulant therapy, mainly with low molecular weight heparin (LMWH), appears to be associated with better prognosis in patients with severe COV-ID-19.
32583809 Although the International Society on Thrombosis and Haemostasis (ISTH) interim guidance recommends low molecular weight heparin in all hospitalized patients, data is lacking in population below 14 years of age. […] However, in the presence of life-threatening thromboembolic event or symptomatic acro-ischemia, unfractionated heparin (UFH) should be used with caution.
32586214 A number of antithrombotic drugs have been proposed as potential therapies to prevent COVID-19-associated thrombosis, including, heparin, FXII inhibitors, fibrinolytic drugs, nafamostat and dipyridamole, many of which also possess pleiotropic anti-inflammatory or anti-viral effects.
32586394 To assess whether high doses of Low Molecular Weight Heparin (LMWH) (i.e. […] History of heparin induced thrombocytopenia 8. […] Administration of therapeutic doses of LMWH, fondaparinux, or unfractionated heparin (UFH) for more than 72 hours before randomization; prophylactic doses are allowed 12. […] Assuming an alpha of 5% (two tailed) and a percentage of patients who experience clinical worsening in the control group being between 25% and 30%, the study will have 80% power to detect at least 50% relative reduction in the risk of death between low and high doses of heparin.
32589931 Heparin resistance is an uncommon phenomenon defined as the need for high dose unfractionated heparin (UFH) of more than 35,000 IU/day to achieve the target activated partial thromboplastin time ratio or the failure to achieve the desired activated clotting time after a full UFH dose. […] We describe a Covid-19 patient confirmed by reverse-transcriptase-polymerase-chain-reaction (RT-PCR) assay, with acute limb ischemia, who developed heparin resistance.
32607652 Despite all patients receiving guideline-recommended low-molecular-weight heparin (LMWH) thromboprophylaxis, the incidence of DVT was 46% (95% CI 35-56%).
32613200 It seems that severe cases of COVID-19 are at risk for developing PTE and in-charge physicians should be prepared and plan for anticoagulant prophylaxis using low-molecular-weight heparin (LMWH).
32613385 Most patients with a confirmed diagnosed with PE recieved low molecular weight heparin (LMWH): 79.3% (23/29).
32615569 The Seraph® 100 contains ultrahigh molecular weight polyethylene beads with end point-attached heparin and is approved for the reduction of pathogens from the bloodstream either as a single agent or as an adjunct to conventional anti-infective agents. […] Bacteria, viruses, fungi, and toxins have been shown to bind to the immobilized heparin in a similar way to the interaction with heparan sulfate on the cell surface. […] In this review, we describe the pathophysiological basis and rationale for using heparin for pathogen removal from the blood as well as exploring the technology behind the adaptation of heparin to deprive it of its systemic anticoagulant activity.
32617244 The role of heparin is being increasingly investigated in patients with COVID-19 infection; however, the role of other anticoagulants such as warfarin is yet to be defined.
32618700 Three patients (23.1%) had laboratory-confirmed heparin-induced thrombocytopenia, and all of them developed cannula-associated deep vein thrombosis.
32629115 These could be integrated into current treatment strategies while novel treatments are awaited, also in light of the fact that they display an anticoagulant effect that facilitates the activity of low-molecular-weight heparin, aimed at preventing acute respiratory distress syndrome (ARDS)-associated thrombotic events.
32640479 The majority suggested universal pharmacological thromboprophylaxis in all COVID-19 inpatients, but there was heterogeneity in the suggested intensity of thromboprophylaxis: seven advised considering intensified doses of heparin according to the clinical or biological severity of the disease, especially in the ICU setting.
32645300 Since her Hb remained stable, she was started on low-intensity unfractionated heparin.
32653452 Using a surface plasmon resonance direct binding assay, we found that both monomeric and trimeric SARS-CoV-2 SGP bind more tightly to immobilized heparin (KD = 40 pM and 73 pM, respectively) than the SARS-CoV and MERS-CoV SGPs (500 nM and 1 nM, respectively). […] In competitive binding studies, the IC50 of heparin, tri-sulfated non-anticoagulant heparan sulfate, and non-anticoagulant low molecular weight heparin against SARS-CoV-2 SGP binding to immobilized heparin were 0.056 μM, 0.12 μM, and 26.4 μM, respectively. […] Furthermore, our findings may provide additional basis for further heparin-based interventions for COVID-19 patients exhibiting thrombotic complications.
32653981 The severity of the derangement of coagulation parameters in COVID-19 patients has been associated with a poor prognosis, and the use of low molecular weight heparin (LMWH) at doses registered for prevention of venous thromboembolism (VTE) has been endorsed by the World Health Organization and by Several Scientific societies.
32654082 A high number of thrombotic episodes are reported, along with the mortality benefits of heparin. […] Isolated heparin therapy may not be sufficient to combat thrombosis in this disease. […] • Patients with COVID-19 at high risk for thrombosis should be put on high dose heparin therapy.
32660814 A proposal is made for the use of prophylactic low molecular weight heparin not only in those cases in which oocyte retrieval has been performed, but also in those in which cancellation has been decided.
32663827 Increased doses of unfractionated heparin, combination of heparin and regional citrate anticoagulation, or combination of prostacyclin and heparin might be used. […] If infusion pumps to deliver anticoagulants are limited, the administration of low-molecular-weight heparin might be considered.
32665940 Patients with COVID-19 pneumonia who are receiving non-vitamin K antagonists or direct oral anticoagulants for chronic disease are usually switched to heparin treatment during hospitalization.
32667444 Prophylactic heparin should be used in hospitalized patients, however, no anticoagulation should be provided for patients without a specific clinical indication.
32668058 We observed two key findings: a high thrombin generation capacity that remained within normal values despite heparin therapy and a hypofibrinolysis mainly associated with increased PAI-1 levels.
32669027 The thrombosis has been resolved with anticoagulant therapy with low molecular weight heparin of 100 IU/kg bid without giving pulmonary embolism.
32671455 Low-molecular-weight heparin should be chosen as early treatment because of its anti-inflammatory action and its ability to antagonize histones and so defend the endothelium.
32677007 Acute respiratory distress syndrome was treated with, among other drugs, low-molecular-weight heparin. […] On day 10, heparin treatment was replaced by danaparoid sodium, but by day 13, the continued low platelet count made a diagnosis of heparin-induced thrombocytopenia unlikely.
32677459 Limited data suggest a high incidence of deep vein thrombosis and pulmonary embolism in up to 40% of patients, despite the use of a standard dose of low-molecular-weight heparin (LMWH) in most cases.
32678949 Low molecular weight heparin (LMWH) is the drug of choice for thromboprophylaxis in pregnant women with COVID-19.
32678978 Using this technique in combination with molecular modeling also allows the role of heparin in destabilizing the ACE2/RBD association to be studied, providing critical information for understanding the molecular mechanism of its interference with the virus docking to the host cell receptor. […] Both short (pentasaccharide) and relatively long (eicosasaccharide) heparin oligomers form 1:1 complexes with RBD, indicating the presence of a single binding site. […] The destabilizing effect of heparin is more pronounced in the case of the longer chains due to the electrostatic repulsion between the low-pI ACE2 and the heparin segments not accommodated on the RBD surface. […] In addition to providing important mechanistic information on attenuation of the ACE2/RBD association by heparin, the study demonstrates the yet untapped potential of native MS coupled to gas-phase ion chemistry as a means of facilitating rational repurposing of the existing medicines for treating COVID-19.
32679155 Higher doses of heparin to achieve therapeutic activated clotting times were also noted.
32685905 Early reports of coronavirus disease 2019 (COVID-19) clinical features describe a hypercoagulable state, and recent guidelines recommend prophylactic anticoagulation for patients with COVID-19 with low-molecular-weight heparin, but this would be contraindicated in the presence of heparin-induced thrombocytopenia (HIT). […] We recommend clinicians monitor platelet counts closely during heparin therapy, with a low threshold to evaluate for HIT.
32686781 Furthermore, the high incidence of venous thromboembolism in COVID-19 patients admitted to the intensive care unit and the autoptic findings of in situ micro-thrombosis at the pulmonary vascular level, suggest that in this disease coagulopathy, unlike septic disseminated intravascular coagulation, is driven towards a hyper-thrombogenic state, giving rise to a debate (with ongoing studies) about the preventive use of anticoagulant doses of heparin to reduce mortality.
32687449 Parenteral anticoagulants, such as heparin and low-molecular-weights heparins, are widely used in the management of COVID-19 patients.
32687485 She was also started on ceftriaxone, azithromycin, hydroxychloroquine, and subcutaneous heparin (5000 U every 8 h) for VTE prophylaxis. […] CONCLUSIONS The finding of the case suggested that low-molecular-weight heparin prophylaxis may not be sufficient to prevent VTE in COVID-19 pneumonia.
32689586 Controversy exists on the best management algorithm for the hypercoagulable state associated to COVID-19 Either direct oral anticoagulants or low-molecular-weight-heparin are considered appropriate at discharge for patients with venous thromboembolism.
32696014 This study describes a simple and safe protocol of anticoagulation with low-molecular-weight heparin in combination with bedside sustained low-efficiency hemodialysis in coronavirus disease 2019 patients. […] Monocentric observational cross-over trial investigating sustained low-efficiency hemodialysis with unfractionated heparin following sustained low-efficiency hemodialysis with low-molecular-weight heparin. […] Three consecutive severe coronavirus disease 2019 patients receiving nine sustained low-efficiency hemodialysis therapies with unfractionated heparin followed by 18 sustained low-efficiency hemodialysis therapies with low-molecular-weight heparin. […] Switch from IV unfractionated heparin to subcutaneous low-molecular-weight heparin enoxaparin in therapeutic doses for patients receiving bedside sustained low-efficiency hemodialysis. […] Nine renal replacement therapy sessions in patients anticoagulated with high doses of unfractionated heparin had to be discontinuated prematurely because of clotting of tubes or membrane and poor quality of hemodialysis. […] In the same patients, the switch to anticoagulation with therapeutic doses of the low-molecular-weight heparin enoxaparin allowed undisturbed bedside sustained low-efficiency hemodialysis for at least 12 hours.
32698853 Nebulised unfractionated heparin (UFH) has a strong scientific and biological rationale and warrants urgent investigation of its therapeutic potential, for COVID-19-induced acute respiratory distress syndrome (ARDS).
32713821 Treatment with low-molecular-weight heparin and aspirin was prescribed.
32717282 This includes the encapsulation and transport of specific drugs, as adjuvants to stabilize proteins, vaccines or other molecules involved in the infection, as cholesterol trappers to destabilize the virus envelope, as carriers for RNA therapies, as direct antiviral drugs and even to rescue blood coagulation upon heparin treatment.
32720827 Heparin-induced thrombocytopenia (HIT) is a well-known complication of heparin therapy. […] He had a high pretest probability for HIT with a 4T score of 6 and a positive anti-PF4/heparin antibody. […] Heparin drip was discontinued and was switched to argatroban.
32735448 Eight PTE patients were under thromboprophylaxis with low-molecular-weight heparin, four PTE patients had lower-limbs deep vein thrombosis at ultrasound examination (performed in 33/34 patients).
32736596 Candidate agents currently include bemcentinib, MEDI3506, acalabrutinib, zilucoplan and nebulised heparin. […] Current candidate experimental arms include bemcentinib, MEDI3506, acalabrutinib, zilucoplan and nebulised heparin with others to be added over time. […] Bemcentinib could potentially reduce viral infection and blocks SARS-CoV-2 spike protein; MEDI3506 is a clinic-ready anti-IL-33 monoclonal antibody with the potential to treat respiratory failure caused by COVID; acalabrutinib is a BTK inhibitor which is anti-viral and anti-inflammatory; zilucoplan is a complement C5 inhibitor which may block the severe inflammatory response in COVID-19 and; nebulised heparin has been shown to bind with the spike protein.
32738407 More than 90% of patients in both groups received prophylactic anticoagulation, but the use of low-molecular-weight heparin or subcutaneous heparin prophylaxis was not predictive of DVT.
32748122 All studies utilized LMWH or unfractionated heparin as their pharmacologic thromboprophylaxis, either prophylactic doses or therapeutic doses.
32750019 Early thromboprofilaxis combination with low-molecular-weight heparin and low-dose aspirin is strongly recommended with the maintenance of angiotensin-converting enzyme inhibitor (ACEI) or angiotensin-II-receptor blocker (ARB) therapy when they were prescribed earlier.
32756065 The experts unanimously prescribed low-molecular-weight heparin to patients with severe COVID-19 pneumonia, and half of them (51.6%) used a dose higher than standard.
32757278 The aim of this study was to evaluate the applicability of bedside ultrasonography for the diagnosis of deep venous thrombosis (DVT) in patients infected with corona virus disease 2019 (COVID-19) with and without treatment with low molecular weight heparin (LMWH).
32762118 COVID-19 patients are characterized by normal in vitro thrombin generation and enhanced clot formation and decreased fibrinolytic potential despite the presence of heparin in the sample.
32766161 Importantly, three patients, one severe and two critical ill type, with increased D-dimer survived after anticoagulant therapy with continuous heparin infusion.
32766568 Expert opinion and scientific societies recommend a higher dose of low-molecular-weight heparin, but definitive data is lacking. […] We report our adapted thromboprophylaxis practice of low-molecular-weight heparin administration in coronavirus disease 2019 ICU patients. […] We show in coronavirus disease 2019 ICU patients, despite higher prophylactic low-molecular-weight heparin administration due to body mass index, anti-Xa activity was well below peak serum levels in our cohort of critically ill coronavirus disease 2019 patients.
32769623 The primary endpoint of this study was the occurrence of pulmonary embolism according to the use of standard thromboprophylaxis (i.e. subcutaneous enoxaparin 4,000 international units once daily) or high regimen thromboprophylaxis (i.e. subcutaneous enoxaparin 4,000 international units bid or therapeutic unfractioned heparin).
32776010 A computed tomography (CT) pulmonary angiogram demonstrated large bilateral pulmonary emboli with right heart strain, for which he received intravenous systemic thrombolysis followed by therapeutic weight-adjusted anticoagulation with low molecular weight heparin (dalteparin).
32780853 This case report describes a 42-year-old male with COVID-19 who developed a massive pulmonary embolism resulting in cardiac arrest after suspected failure of low-molecular-weight heparin therapy for a deep venous thrombosis.
32789604 The systematic use of unfractionated heparin therapy to prevent circuit thrombosis is warranted during ECMO support. […] The clinical presentation and management of heparin-induced thrombocytopenia, which is a rare but life-threatening complication of heparin therapy, has not been described in those patients yet.
32790951 We read with much interest the recent observational study of Nougier et al., which aimed at studying thrombin generation (TG) and fibrinolysis profiles of COVID-19 patients admitted to an intensive care unit (ICU) or to an internal medicine ward and receiving various schemes of prophylactic heparin.[ […] 1] They reported that thrombin potential remained within normal range despite heparin and that fibrinolysis was decreased in relation with increased plasminogen activator inhibitor 1 (PAI-1) and thrombin-activatable fibrinolysis inhibitor (TAFI) antigen plasma levels.
32791191 We report a case of acute lower limb ischemia and resistance to heparin as the onset of COVID-19 disease, preceding the development of respiratory failure.
32794132 To evaluate the safety of intermediate dose regimens of low-weight molecular heparin (LWMH) in COVID-19 patients with pneumonia, particularly in older patients.
32798346 A relatively high mortality of severe coronavirus disease 2019 (COVID-19) is worrying, and the application of heparin in COVID-19 has been assessed and recommended with some expert consensus because of the risk of DIC and venous thromboembolism. […] However, “Risk Benefit Analysis” on the aspect of safety in using low molecular weight heparin (LMWH) in COVID-19 patients for thrombosis prophylaxis has been explained below with a few case studies and detailed information from various clinical evidence. […] Heparin treatment including unfractionated and low molecular weight heparin appears to be associated with better prognosis in severe COVID-19 patients with coagulopathy.
32805623 We evaluate the results of intensive care unit (ICU) thrombosis prophylaxis of 5700 international unit (IU) nadroparin low molecular weight heparin (LMWH) twice daily.
32807241 To assess the hypothesis that an adjunctive therapy with methylprednisolone and unfractionated heparin (UFH) or with methylprednisolone and low molecular weight heparin (LMWH) are more effective in reducing any-cause mortality in critically-ill ventilated patients with pneumonia from SARS-CoV-2 infection compared to LMWH alone. […] History of heparin-induced thrombocytopenia 5.
32807764 He received prophylactic-dose low molecular weight heparin for venous thromboembolism prophylaxis and did not experience any thrombotic events while hospitalized. […] Routine anticoagulation with low molecular weight heparin can prevent thrombotic events and thus can improve patient outcomes.
32808174 They were started on low-molecular-weight heparin since admission.
32809207 Fraction of inspired oxygen, P/F ratio, respiratory rate, heparin administration, D-dimer, IL-6, ferritin and CRP showed correlation with DVT.
32809870 The core treatment strategy to manage the pulmonary phase includes the combination of methylprednisolone, ascorbic acid, thiamine, and heparin (MATH+ protocol). […] While there is no single ‘Silver Bullet’ to cure COVID-19, we believe that the severely disturbed pathological processes leading to respiratory failure in patients with COVID-19 organizing pneumonia will respond to the combination of Methylprednisone, Ascorbic acid, Thiamine, and full anticoagulation with Heparin (MATH+ protocol).
32815416 Our primary objective is to evaluate whether therapeutic-dose anticoagulation with low-molecular-weight heparin or unfractionated heparin prevents mechanical ventilation and/or death in patients hospitalized with COVID-19 compared to usual care.
32826796 Twenty-seven out of 37 hospitalized patients (73%) received low molecular weight heparin.
32829961 Multiple organizations, including the American Society of Hematology (ASH), recommend the routine use of prophylactic heparin to temper the thrombotic complications of this illness given its mortality benefit in severe COVID-19 infections. […] Reductions in circulating levels of Antithrombin III (AT), the primary mediator of heparin’s action, is present in cases of coronavirus related critical illness. […] AT’s use as a prognostic marker, an important effector of heparin resistance, and a potential therapeutic target for COVID-19 remains to be explored.
32835257 All patients were treated with the standard of care (ie, supplemental oxygen, hydroxychloroquine, azithromycin, antiretrovirals, and low molecular weight heparin), and a non-randomly selected subset of patients also received tocilizumab.
32837053 Routine thromboprophylaxis with low molecular weight heparin is recommended in all hospitalized patients to reduce the incidence of thrombosis.
32838109 Alteplase will be delivered through an initial bolus of 50mg or 100mg followed by heparin infusion for systemic anticoagulation, with alteplase re-dosing if there is a >20% PaO2/FiO2 improvement not sustained by 24 hours.
32838110 We thank May et al for their comments, expanding the number of reported cases of suspected and confirmed heparin-induced thrombocytopenia (HIT) associated with COVID-19, and reemphasizing the complexity of the prothrombotic state observed (1). […] We agree that false-positive enzyme immunoassay (EIA) detection of anti-platelet factor 4 (PF4)/heparin antibodies could explain the results we observed in patients #2 and #3 (2), and this has been the conventional interpretation when functional testing (such as the serotonin-release assay [SRA]) returns negative.
32838111 The majority of respondents (78%) recommended prophylactic anticoagulation for all hospitalized patients with COVID-19 with most recommending use of low-molecular-weight heparin or unfractionated heparin.
32838169 Medications assessed included lopinavir/ritonavir, arbidol, hydroxychloroquine, tocilizumab, favipiravir, heparin, and dexamethasone. […] Heparin and dexamethasone showed improvement with severe COVID-19 cases requiring supplemental oxygenation. […] Heparin and dexamethasone show benefit especially for severe COVID-19 cases.
32839751 Special attention should therefore be paid to COVID-19 patients under anticoagulation with vitamin K antagonist and a shift to heparin treatment until illness resolution may be a safe option in these individuals.
32841342 This raises the possibility that intermediate or weight-based heparin dosing may be more effective than fixed dosing for thromboprophylaxis in high-risk subsets of patients hospitalized with COVID-19.
32841919 We compare and contrast COVID-19 hypercoagulability, and associated increased risk of venous and arterial thrombosis, from the perspective of heparin-induced thrombocytopenia (HIT), including the dilemma of providing thromboprophylaxis and treatment recommendations when available data are limited to observational studies. […] The frequent use of heparin-both low-molecular-weight and unfractionated-in preventing and treating COVID-19 thrombosis, means that vigilance for HIT occurrence is required in this patient population.
32844302 Currently, some guidelines recommend the use of prophylactic low molecular weight heparin in all hospitalized patients, with intermediate dose prophylaxis in those needing intensive care, and the use of therapeutic anticoagulation in patients with proven or suspected thrombosis.
32848743 Heparin administration in COVID-19 patients is recommended by expert consensus, although evidence about dosage, duration and efficacy are limited. […] We aim to investigate the association between different dosages of low molecular weight heparin (LMWH) and mortality among COVID-19 hospitalized patients. […] No significant differences in the main demographic characteristics and laboratory testings at admission were observed in the two heparin regimen subgroups, except for older age and prevalence of hypertension in the group treated with “standard” prophylaxis LMWH dosage.
32850085 We present three patients with COVID-19 who developed acute renal failure during hospitalization and were seen to have an improvement in their kidney function after being started on therapeutic anticoagulation with heparin (Target PTT 58-93 seconds) for varying indications (atrial fibrillation, popliteal vein thrombosis and a pulmonary embolism).
32851093 Treatment with low molecular weight heparin was not related to odds of death.
32853989 Reports suggest a beneficial effect of the use of heparin/low molecular weight heparin (LMWH) on mortality in COVID-19. […] In part, this beneficial effect could be explained by the anticoagulant properties of heparin/LMWH. […] Here, we summarise potential beneficial, non-anticoagulant mechanisms underlying treatment of COVID-19 patients with heparin/LMWH, which include: (i) Inhibition of heparanase activity, responsible for endothelial leakage; (ii) Neutralisation of chemokines, and cytokines; (iii) Interference with leukocyte trafficking; (iv) Reducing viral cellular entry, and (v) Neutralisation of extracellular cytotoxic histones. […] Considering the multiple inflammatory and pathogenic mechanisms targeted by heparin/LMWH, it is warranted to conduct clinical studies that evaluate therapeutic doses of heparin/LMWH in COVID-19 patients. […] In addition, identification of specific heparin-derived sequences that are functional in targeting non-anticoagulant mechanisms may have even higher therapeutic potential for COVID-19 patients, and patients suffering from other inflammatory diseases.
32860686 We will describe several classes of drugs such as serine protease inhibitors, heparin, heparan sulfate receptor inhibitors, chelating agents, immunomodulators and many others.
32863274 Here, we advocate a highly favourable opportunity for the treatment of COVID-19 disease by repurposing a long-serving medical agent with an excellent history of clinical use, namely heparin. […] Heparin is best known as an anticoagulant, but it also exhibits direct antiviral activity against many enveloped viruses and has anti-inflammatory activity. […] This already makes heparin a unique, potentially curative agent that can be used immediately to help resolve the ongoing crisis associated with SARS-CoV-2 infection and COVID-19 disease. […] We demonstrate here in vitro that heparin does indeed inhibit SARS-CoV-2 infection. […] The three concurrent modes of activity of heparin (antiviral, anticoagulant and anti-inflammatory) against SARS-CoV-2/COVID-19 form a unique therapeutic combination. […] Thus, repurposing of heparin to fight SARS-CoV-2 and COVID-19 appears to be a powerful, readily available measure to address the current pandemic.
32863636 From the existing literature evidence, it is observed that among the currently available agents, low-dose corticosteroids and heparin can be beneficial in managing cytokine storm.
32864235 Subsequently, the patient was started on heparin and transferred to a tertiary facility for thrombectomy.
32865072 All patients received low-molecular-weight heparin during their hospital stay and required supplementary oxygen therapy either by a nasal cannula or continuous positive airway pressure.
32865189 In the case of previously anticoagulated patients, changing the oral anticoagulant for a low molecular weight heparin (LMWH) is generally recommended.
32870433 It is approved to parenterally prevent and/or treat heparin-induced thrombocytopenia in addition to other thrombotic conditions.
32881336 However, several uncertainties exist in this area, including the appropriate type and dose of heparin.
32881340 We performed a retrospective analysis to compare and evaluate the effect of low molecular weight heparin (LMWH) treatment on disease progression.
32892505 Critically ill patients were on haemodiafiltration (31%; heparin used in the circuit) or often received escalated prophylactic low-molecular weight heparin. […] Importantly, disease severity did not increase thrombin generation (including thrombin-antithrombin complexes and prothrombin fragment 1 + 2) when comparing both cohorts; counter-intuitively critical patients were hypocoaguable. tPA, TFPI and VEGF were increased in critical patients, which are hypothesized to reflect endothelial dysfunction and/or contribution of heparin (which may cause endothelial TFPI/tPA release).
32892540 This study aimed to investigate the clinical impact of a low molecular weight heparin (LMWH) treatment on the clinical course of COVID-19.
32892615 The use of low molecular weight heparin in early stage of the disease could prevent vascular complications and reduce the progression to severe stage of the disease.
32895056 The intervention group will receive the anticoagulant bivalirudin intravenously with a target aPTT of 45-70 sec for three days while the control group will stay on the standard treatment with low-molecular-weight heparins /unfractionated heparin subcutaneously (see scheme in Additional file 1).
32905019 According to current data, the risk of thromboembolic events in hospitalized COVID-19 patients is significantly increased, making thrombosis prophylaxis with low molecular weight or unfractionated heparin necessary.
32905282 Careful attention to his daily platelet count suggested the possibility of immune mediated heparin-induced thrombocytopenia (HIT) which was confirmed by laboratory testing and resolved when anticoagulation was switched to a direct thrombin inhibitor.
32907635 Contraindications to enoxaparin therapy, including prior heparin-induced thrombocytopenia and known hypersensitivity.
32907762 Despite anticoagulation, usually with heparin, mortality for thromboembolic events in COVID-19 remains high. […] Clinical efficacy of heparin is due to its interaction with antithrombin (AT) that may be decreased in COVID-19.
32908713 Evidence also shows the benefits of heparin as an anticoagulant.
32910408 Pulmonary embolism was diagnosed in 92% of patients; 5 patients required intensive care and 3 underwent thrombolysis. 27 patients received initial treatment with unfractionated heparin/low molecular weight heparin (LMWH) while 10 were treated with direct anticoagulants (DOACs).
32911000 Since the body of evidence addressing the coagulation derangements caused by Coronavirus disease (COVID-19) has been constantly growing, we investigated whether pre-hospitalization oral anticoagulation (OAC) or in-hospital heparin treatment could have a protective role among COVID-19 patients. […] At overall multivariate logistical regression, use of heparin (n = 394, 46.6%) was associated with a better chance of survival to hospital discharge (OR 0.60 [0.38-0.94], p < 0.001), in particular in patients with AHRF, with no association found with the use of OACs. […] In a sub-analysis, the highest mortality rate was found for AHRF patients when heparin was not administered. […] In our cohort, OACs appeared to be ineffective in reducing mortality rate, while heparin resulted to be a useful treatment when lung disease was sufficiently severe, potentially suggesting a crucial role of microthrombosis in severe COVID-19.
32911110 The patients were separated into two groups for statistical analysis: those receiving low-molecular-weight heparin prophylaxis and those receiving intermediate or complete anticoagulation treatment. […] All the patients who had presented with DVT had been receiving low-molecular-weight heparin prophylaxis.
32913137 Heparin and heparan sulfate antagonize the binding of these pathogens to HSPGs and stop their cellular internalization, but the anticoagulant effect of these agents has been limiting their use in the treatment of viral infections. […] Heparin-binding peptides (HBPs) are suitable nonanticoagulant agents that are capable of antagonizing binding of heparin-binding pathogens to HSPGs. […] SIGNIFICANCE STATEMENT: The need to discover treatment modalities for COVID-19 is a necessity, and therapeutic interventions such as heparin-binding peptides (HBPs), which are used for other cases, can be beneficial based on their mechanisms of actions.
32916371 Heparin, both unfractionated heparin and low-molecular-weight heparin, have emerged as agents that can address the viral infection, inflammation, and thrombosis in this syndrome.
32917441 The patient was admitted to the intensive care unit and successfully treated with unfractionated heparin, alteplase 50 mg, and argatroban 2 μg/kg/min.
32920503 The aim of this study was to investigate potential markers of coagulopathy and the effects of thromboprophylaxis with low-molecular-weight heparin (LMWH) on thromboelastography (TEG) and anti-factor Xa in critically ill COVID-19 patients.
32920811 For patients with VD-CVR who receive home treatment for COVID-19, VAS recommends assessment for (1) disease worsening risk and prioritized hospitalization of those at high risk and (2) VTE risk assessment and thromboprophylaxis with rivaroxaban, betrixaban, or low-molecular-weight heparin (LMWH) for those at high risk. […] For hospitalized patients with VD-CVR and COVID-19, VAS recommends (1) routine thromboprophylaxis with weight-adjusted intermediate doses of LMWH (unless contraindication); (2) LMWH as the drug of choice over unfractionated heparin or direct oral anticoagulants for the treatment of VTE or hypercoagulability; (3) careful evaluation of the risk for disease worsening and prompt application of targeted antiviral or convalescence treatments; (4) monitoring of D-dimer for optimization of the antithrombotic treatment; and (5) evaluation of the risk of VTE before hospital discharge using the IMPROVE-D-dimer score and prolonged post-discharge thromboprophylaxis with rivaroxaban, betrixaban, or LMWH.
32922211 Another challenge for the hemostasis laboratory is the monitoring of heparin treatment, especially unfractionated heparin in the setting of an extreme inflammatory response.
32922212 In this case series, we report four cases of venous thromboembolism and 1 case of arterial thrombotic event, in patients treated with standard or intensified prophylactic doses of unfractionated heparin or low molecular weight heparin at our institution.
32932327 All patients were treated with hydroxychloroquine, azithromycin, and low-molecular-weight heparin at anticoagulant dose.
32934849 We are reporting a case of symptomatic acute splenic thrombosis causing splenic infarction in a patient suffering from a severe case of COVID-19 and despite the use of an intermediate dose of low-molecular-weight heparin (LMWH).
32936400 The use of an intermediate therapeutic dose of low molecular weight (LMWH) or unfractionated heparin can be considered on an individual basis in patients with multiple risk factors for venous thromboembolism, including critically ill patients admitted to the ICU.
32948465 The early uses of therapeutic plasma exchange and low molecular weight heparin, for any clinical trial in development is warranted, in order to interdict the intense inflammatory/kinin driven cascade.
32953201 The use of an intermediate therapeutic dose of low molecular weight (LMWH) or unfractionated heparin can be considered on an individual basis in patients with multiple risk factors for venous thromboembolism, including critically ill patients admitted to the ICU.
32959003 Although heparin is frequently used to treat thrombotic pathology in COVID-19, pulmonary embolism is still seen in severe cases.
32961675 All protocols included prophylactic heparin and therapeutic doses for thromboembolism. […] Higher prophylactic doses of heparin for high-risk patients and therapeutic doses for patients in critical condition were included in 53.3% and 33.3% of protocols, respectively.
32970653 Hence, early evaluation of abdominal vessels in covid-19 patients who present with any abdominal symptoms should be considered, especially when found to have an elevated D-dimer level, as early treatment of thrombosis with low-molecular-weight heparin can have a significant impact on the therapeutic outcome.
32970989 Docking studies suggest a heparin/heparan sulfate-binding site adjacent to the ACE2-binding site. […] Both ACE2 and heparin can bind independently to spike protein in vitro, and a ternary complex can be generated using heparin as a scaffold. […] Electron micrographs of spike protein suggests that heparin enhances the open conformation of the RBD that binds ACE2. […] Unfractionated heparin, non-anticoagulant heparin, heparin lyases, and lung heparan sulfate potently block spike protein binding and/or infection by pseudotyped virus and authentic SARS-CoV-2 virus. […] Manipulation of heparan sulfate or inhibition of viral adhesion by exogenous heparin presents new therapeutic opportunities.
32973526 The role of heparin in COVID-19 is supported by a lot of studies describing its pleiotropic activity but it must be proven in clinical trials. […] Several protocols have been designed to assess the risk-benefit profile of heparin (low-molecular-weight or unfractionated heparin) in hospitalized subjects.
32977129 We also evaluated the impact of different doses of low molecular weight heparin (LMWH) on the incidence of bleedings. […] More severe critically ill COVID-19 patients have a high incidence of VTE and worse outcome, despite the use of heparin at the therapeutic dose. […] However, the use of heparin did not increase the incidence of bleeding complications.
32977136 We found greatest consensus on recommendations for heparin-based pharmacologic venous thromboembolism (VTE) prophylaxis in COVID-19 patients without contraindications.
32979436 Sulfated galactofucan (SJ-D-S-H) and glucuronomannan (Gn) displayed strongly inhibited interaction between SARS-CoV-2 SGPs and heparin while showing negligible inhibition of the interaction between SARS-CoV-2 SGPs and ACE2. […] The IC50 values of SJ-D-S-H and Gn in blocking heparin SGP binding were 27 and 231 nM, respectively.
32980434 Timely treatment with low-molecular-weight heparin (LMWH) in ED was found to be protective (OR: 0.36; 95% CI: 0.21-0.62; p < 0.0001).
32980842 During his ICU stay, he received a continuous infusion of efmoroctocog alpha in order to maintain factor VIII activity between 80 and 100%, together with therapeutic doses of low-molecular-weight heparin targeting anti-Xa activity above 0.5 IU/mol.
32984388 Prophylactic low molecular weight heparin did not appear to prevent PE.
32997237 The following variables were extracted for this study: age, gender, temperature, and saturation of oxygen on admission, treatment with hydroxychloroquine, azithromycin, heparin, steroids, tocilizumab, a combination of lopinavir with ritonavir, and oseltamivir, together with data on mortality.
33004712 Immunomodulatory drugs, such as hydroxychloroquine and interleukin-6 inhibitors, as well as antithrombotic drugs such as heparin and low molecular weight heparin, are currently being administered with some benefit.
33010244 Hs-cTnI has been measured in lithium-heparin plasma samples using STAT High Sensitive Troponin I (Architect i2000, Abbott Diagnostics), being 99th percentiles 16 and 34 ng/L for females and males respectively.
33014097 Switching to low-molecular-weight heparin has been recommended during hospitalization for COVID-19 infection.
33017480 In both, venous thromboembolism was diagnosed in the emergency department, so they did not receive previous prophylactic therapy with low-molecular-weight heparin.
33019920 Intervention possibilities vary between lowmolecular-weight heparin (LMWH) and Unfractionated Heparin (UFH).
33026344 Another challenge for the hemostasis laboratory is the monitoring of heparin treatment. […] For instance, the issue of the monitoring of unfractionated heparin remains debated, the more so when there is a tremendous inflammatory response.
33026569 We aimed to characterize the burden of CRRT filter clotting in COVID-19 infection and to describe a CRRT anticoagulation protocol that used anti-factor Xa levels for systemic heparin dosing. […] Sixty-five patients were analyzed, including 17 using an anti-factor Xa protocol to guide systemic heparin dosing. […] An anticoagulation protocol using systemic unfractionated heparin, dosed by anti-factor Xa levels is reasonable approach to anticoagulation in this population.
33027192 The use of heparin has been shown to decrease the mortality in hospitalized patients with severe COVID-19.
33030036 Sulodexide represents a mixture of fast-moving heparin (FMH) and dermatan sulfate (DS) and has been used for the management of venous diseases such as DVT and related disorders. […] The purpose of this study is to compare sulodexide and its components with unfractionated heparin (UFH) to determine its suitability for the indications in which UFH is used.
33033459 A multidrug regimen including others hydroxychloroquine, antibiotics, dexamethasone and paracetamol, low-molecular-weight-heparin and potassium canrenoate was started.
33034240 Therapy was initiated with subcutaneous low-molecular-weight heparin, and the patient was discharged at 20 days asymptomatic.
33041824 Major efforts are focused on optimizing mechanical ventilation, antiviral, and supportive treatment; however, the role of heparin and low molecular weight (LMW) heparin in this setting has been largely overlooked. […] This review summarizes the available evidence about the role of heparan sulfate as a key entry mechanism for SARS-CoV-2; the efficacy of heparin and LMW heparin in counteracting its entry into the cell, the recent experimental findings obtained in in vitro studies using the LMW heparin enoxaparin Inhixa®, the role of heparin and LMW heparin in modulating the cytokine storm, and the evidence for the use of LMW heparin in the prevention and treatment of the thromboembolic complications of COVID-19. […] The available evidence suggests that LMW heparin appears as a promising tool in the treatment of COVID-19.
33042560 This report describes a COVID-19 patient treated with nafamostat and heparin to prevent circuit thrombosis during ECMO support. […] During ECMO support, occlusive circuit thrombosis developed despite systemic anticoagulation therapy with heparin. […] He was subsequently administered combination therapy with nafamostat and heparin. […] Although the combination therapy could prevent circuit thrombosis, it was converted to heparin monotherapy because of hyperkalemia and hemothorax. […] Combination therapy with nafamostat and heparin can prevent circuit thrombosis during ECMO.
33043250 She was commenced on a therapeutic dose of low molecular weight heparin.
33046113 EBP with heparin-coated hemodiafilter featuring cytokine adsorption properties administered to patients with COVID-19 showed to be feasible and with no adverse events.
33046317 All patients received empirical or targeted antibiotic therapy for prevention and control of infections of potential pathogens, together with low molecular weight heparin therapy.
33046998 This study aimed to evaluate the factors influencing anti-factor Xa activity in COVID-19 patients receiving low molecular weight heparin (LMWH).