Key result
Direct thrombin inhibitors, particularly bivalirudin, are the most thoroughly studied and recommended alternatives to heparin for anticoagulation during cardiopulmonary bypass and extracorporeal membrane oxygenation in patients with heparin contraindications.
Why the study?
Prophylactic anticoagulation is essential during CPB and ECMO, but rare contraindications to heparin necessitate alternative management strategies.
Direct thrombin inhibitors, particularly bivalirudin, are the most supported alternatives to heparin for anticoagulation during CPB and ECMO in patients with heparin-induced thrombocytopenia.
Answers are grounded in this paper and cite their sources.
Supports routine anticoagulation in CPB/ECMO; leaves open optimal agent selection and monitoring.
Cardiopulmonary bypass (CPB) and extracorporeal membrane oxygenation (ECMO) are both mechanical circulatory support technologies that augment the native heart and/or lung function. They involve drainage and reinfusion of blood while performing extracorporeal gas exchange. 1 In both devices, contact between patient blood and the non-endothelialized surface of the circuit triggers an inflammatory response and pro-coagulation cascade. 2–5 As a result, prophylactic anticoagulation is integral to prevent catastrophic thrombosis of the circuitry. In rare instances, there exist contraindications to heparin use, necessitating alternative management strategies. 6 In this review, we will examine heparin contraindications in mechanical circulatory support and summarize alternative approaches to anticoagulation in these circumstances.
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Malviya et al. (2021) conducted a review in Heparin contraindication (e.g., Heparin-Induced Thrombocytopenia) in patients requiring cardiopulmonary bypass (CPB) or extracorporeal membrane oxygenation (ECMO). Alternative anticoagulation strategies (e.g., direct thrombin inhibitors like bivalirudin) was evaluated. Direct thrombin inhibitors, particularly bivalirudin, are the most thoroughly studied and recommended alternatives to heparin for anticoagulation during cardiopulmonary bypass and extracorporeal membrane oxygenation in patients with heparin contraindications.
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