Dataset Information

Superiority of bivalirudin over heparin anticoagulation therapy for extracorporeal membrane oxygenation? Too early to draw conclusions.

ABSTRACT:

Background

We aimed to compare the efficacy and safety of bivalirudin versus heparin as the anticoagulant in patients undergoing extracorporeal membrane oxygenation (ECMO).

Methods

We conducted a search in PubMed, Embase and the Cochrane Library for all the studies in which bivalirudin was compared to heparin as the anticoagulant for ECMO. Efficacy outcomes were defined as the time to reach therapeutic levels, time within therapeutic range (TTR), thrombotic events, circuit thrombosis, circuit exchanges. Safety outcomes were reported as heparin-induced thrombocytopenia (HIT), major bleeding events, minor bleeding events. Other outcomes included hospital length of stay (LOS), ICU LOS, mortality, 30-day mortality and in-hospital mortality.

Results

Ten studies with 1091 patients were included for meta-analysis. A significant reduction in thrombotic events [OR 0.51, 95%CI 0.36,0.73, p = 0.0002, I² = 0%], major bleeding events [OR 0.31, 95%CI 0.10,0.92, p = 0.04, I² = 75%] and in-hospital mortality [OR 0.63, 95%CI 0.44,0.89, p = 0.009, I² = 0%] treated with bivalirudin were found compared with heparin. There were no significant differences between groups regarding the time to reach therapeutic levels [MD 3.53, 95%CI -4.02,11.09, p = 0.36, I² = 49%], TTR [MD 8.64, 95%CI -1.72,18.65, p = 0.10, I² = 77%], circuit exchanges [OR 0.92, 95%CI 0.27,3.12, p = 0.90, I² = 38%], HIT [OR 0.25, 95%CI 0.02,2.52, p = 0.24, I² = 0%], minor bleeding events [OR 0.93, 95%CI 0.38,2.29, p = 0.87, I² = 0%], hospital LOS [MD -2.93, 95%CI -9.01,3.15, p = 0.34, I² = 45%], ICU LOS [MD -4.22, 95%CI -10.07,1.62, p = 0.16, I² = 0%], mortality [OR 1.84, 95%CI 0.58,5.85, p = 0.30, I² = 60%] and 30-day mortality [OR 0.75, 95%CI 0.38,1.48, p = 0.41, I² = 0%].

Conclusion

Bivalirudin probably be a potential choice for ECMO anticoagulation. However, based on the included studies' limitation, the superiority of bivalirudin over heparin for anticoagulation in the ECMO population still require further prospective randomized controlled studies before a definite conclusion.

SUBMITTER: Gu J

PROVIDER: S-EPMC9970897 | biostudies-literature | 2023 Feb

REPOSITORIES: biostudies-literature

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Superiority of bivalirudin over heparin anticoagulation therapy for extracorporeal membrane oxygenation? Too early to draw conclusions.

Gu Jie J Yu Hongjie H Lin Dang D

Heliyon 20230206 2

<h4>Background</h4>We aimed to compare the efficacy and safety of bivalirudin versus heparin as the anticoagulant in patients undergoing extracorporeal membrane oxygenation (ECMO).<h4>Methods</h4>We conducted a search in PubMed, Embase and the Cochrane Library for all the studies in which bivalirudin was compared to heparin as the anticoagulant for ECMO. Efficacy outcomes were defined as the time to reach therapeutic levels, time within therapeutic range (TTR), thrombotic events, circuit thrombo ...[more]

PMID: 36865472

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Project description:Extracorporeal membrane oxygenation is a potentially life-saving intervention in refractory cardiopulmonary failure, but it requires anticoagulation to prevent circuit thromboses, which exposes the patient to hemorrhagic complications. Heparin has traditionally been the anticoagulant of choice, but the direct thrombin inhibitor bivalirudin is routinely used in cases of heparin-induced thrombocytopenia and has been suggested as a superior choice. We sought to examine the timing of hemorrhagic and thrombotic complications after extracorporeal membrane oxygenation cannulation and to compare the rates of such complications between patients anticoagulated with heparin versus bivalirudin.DesignRetrospective cohort study.SettingJohns Hopkins Hospital patients between January 2016 and July 2019.PatientsAdult (> 18 yr) extracorporeal membrane oxygenation patients.InterventionsPatients were anticoagulated either with heparin or bivalirudin.Measurements and main resultsWe compared rates of hemorrhagic and thrombotic complications by time on heparin versus bivalirudin and characterized the average time to each complication. Of 144 extracorporeal membrane oxygenation patients (mean age 55.3 yr; 58% male), 41% were on central venoarterial extracorporeal membrane oxygenation, 40% on peripheral venoarterial extracorporeal membrane oxygenation, and 19% on venovenous extracorporeal membrane oxygenation. Thirteen patients (9%) received bivalirudin during their extracorporeal membrane oxygenation run, due to concern for (n = 8) or diagnosis of (n = 4) heparin-induced thrombocytopenia or for heparin resistance (n = 1). The rate of hemorrhagic or thrombotic complications did not differ between heparin (0.13/d) and bivalirudin (0.06/d; p = 0.633), but patients on bivalirudin received significantly fewer blood transfusions (1.0 U of RBCs/d vs 2.9/d on heparin; p < 0.001).ConclusionsOur results confirm the safety and efficacy of bivalirudin as an alternative anticoagulant in extracorporeal membrane oxygenation and suggest a potential benefit in less blood product transfusion, although prospective studies are needed to evaluate the true effect of bivalirudin versus the disease processes that prompted its use in our study population.

Project description:Extracorporeal membrane oxygenation (ECMO) can provide respiratory and cardiac support to patients in reversible devastated conditions. Heparin is the mainstay for anticoagulation during ECMO. Bivalirudin, a direct thrombin blocker, may represent an effective alternative for patients suffering from heparin-induced thrombocytopenia (HIT). We present the first case of a Chinese patient who experienced HIT and received bivalirudin anticoagulation during ECMO. In addition, we present a systematic review for this topic. We searched PubMed, EMBASE, and Cochrane Library (up to April 20, 2020) for studies that included patients undergoing ECMO, presenting with HIT, requiring bivalirudin treatment, and reporting relevant outcomes. The literature review yielded 15 studies involving 123 patients, amongst whom 58 patients were confirmed or suspected HIT patients, and 76 patients received bivalirudin as an anticoagulant for ECMO. Twelve studies were included for quantitative synthesis, and 46 patients were retrieved. The mean age of these patients was 46 years, and 30 patients were males. The average maintenance rate of bivalirudin was 0.27 ± 0.37 mg/kg/h, in order to maintain a target of activated clotting time (ACT) of 160-220 s. Additionally, bivalirudin doses in patients with continuous renal replacement therapies (CRRT) and patients without CRRT were 0.15 ± 0.06 mg/kg/h vs 0.28 ± 0.36 mg/kg/h, respectively (p=0.15). Most of the patients with confirmed HIT improved platelet counts in 3.3 ± 2.8 days after switching to bivalirudin anticoagulation. The patient-level data showed that 29 cases survived, 1 reported major bleeding, and 4 reported thrombotic events. Bivalirudin might be a promising optimal choice for ECMO anticoagulation in patients with HIT. A tailored protocol for management of bivalirudin treatment during ECMO should be developed with caution. Further prospective studies are necessary to standardise the use of bivalirudin.Systematic review registrationPROSPERO, identifier CRD42020160907.

Project description:Background: Bivalirudin is a direct thrombin inhibitor (DTI) that can be an alternative to unfractionated heparin (UFH). The efficacy and safety of bivalirudin in anticoagulation therapy in extracorporeal membrane oxygenation (ECMO) remain unknown. Methods: This study followed the preferred reporting items for systematic reviews and meta-analyses (PRISMA) guidelines. A systematic literature search was performed in PubMed, EMBASE, and The Cochrane Library databases to identify all relevant original studies estimating bivalirudin's efficacy and safety versus UFH as anticoagulation therapy in ECMO. The time limit for searching is from the search beginning to June 2021. Two researchers independently screened the literature, extracted data and evaluated the risk of bias of the included studies. The meta-analysis (CRD42020214713) was performed via the RevMan version 5.3.5 Software and STATA version 15.1 Software. Results: Ten articles with 847 patients were included for the quantitative analysis. Bivalirudin can significantly reduce the incidence of major bleeding in children (I 2 = 48%, p = 0.01, odd ratio (OR) = 0.17, 95% confidence interval (CI): 0.04-0.66), patient thrombosis (I 2 = 0%, p = 0.02, OR = 0.58, 95% CI: 0.37-0.93), in-circuit thrombosis/interventions (I 2 = 0%, p = 0.0005, OR = 0.40, 95% CI: 0.24-0.68), and in-hospital mortality (I 2 = 0%, p = 0.007, OR = 0.64, 95% CI: 0.46-0.88). Also, comparable clinical outcomes were observed in the incidence of major bleeding in adults (I 2 = 48%, p = 0.65, OR = 0.87, 95% CI: 0.46-1.62), 30-day mortality (I 2 = 0%, p = 0.61, OR = 0.83, 95% CI: 0.41-1.68), and ECMO duration in adults (I 2 = 41%, p = 0.75, mean difference (MD) = -3.19, 95% CI: -23.01-16.63) and children (I 2 = 76%, p = 0.65, MD = 40.33, 95% CI:-135.45-216.12). Conclusions: Compared with UFH, bivalirudin can be a safe and feasible alternative anticoagulant option to UFH as anticoagulation therapy in ECMO, especially for heparin resistance (HR) and heparin-induced thrombocytopenia (HIT) cases.

Dataset Information

Superiority of bivalirudin over heparin anticoagulation therapy for extracorporeal membrane oxygenation? Too early to draw conclusions.

Background

Methods

Results

Conclusion

Publications

Superiority of bivalirudin over heparin anticoagulation therapy for extracorporeal membrane oxygenation? Too early to draw conclusions.

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