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Anticoagulant interventions in hospitalized patients with COVID-19: A scoping review of randomized controlled trials and call for international collaboration
Journal article   Open access   Peer reviewed

Anticoagulant interventions in hospitalized patients with COVID-19: A scoping review of randomized controlled trials and call for international collaboration

Tobias Tritschler, Marie-Eve Mathieu, Leslie Skeith, Marc Rodger, Saskia Middeldorp, Timothy Brighton, Per Morten Sandset, Susan R Kahn, Derek C Angus, Marc Blondon, …
Journal of thrombosis and haemostasis, Vol.18(11), pp.2958-2967
11/2020
DOI: 10.1111/jth.15094
PMCID: PMC9906402
PMID: 32888372
url
https://doi.org/10.1111/jth.15094View
Published (Version of record) Open Access

Abstract

Coronavirus disease (COVID-19) is associated with a high incidence of thrombosis and mortality despite standard anticoagulant thromboprophylaxis. There is equipoise regarding the optimal dose of anticoagulant intervention in hospitalized patients with COVID-19 and consequently, immediate answers from high-quality randomized trials are needed. The World Health Organization's International Clinical Trials Registry Platform was searched on June 17, 2020 for randomized controlled trials comparing increased dose to standard dose anticoagulant interventions in hospitalized COVID-19 patients. Two authors independently screened the full records for eligibility and extracted data in duplicate. A total of 20 trials were included in the review. All trials are open label, 5 trials use an adaptive design, 1 trial uses a factorial design, 2 trials combine multi-arm parallel group and factorial designs in flexible platform trials, and at least 15 trials have multiple study sites. With individual target sample sizes ranging from 30 to 3000 participants, the pooled sample size of all included trials is 12 568 participants. Two trials include only intensive care unit patients, and 10 trials base patient eligibility on elevated D-dimer levels. Therapeutic intensity anticoagulation is evaluated in 14 trials. All-cause mortality is part of the primary outcome in 14 trials. Several trials evaluate different dose regimens of anticoagulant interventions in hospitalized patients with COVID-19. Because these trials compete for sites and study participants, a collaborative effort is needed to complete trials faster, conduct pooled analyses and bring effective interventions to patients more quickly.
 Anticoagulants - administration & dosage Anticoagulants - adverse effects Cooperative Behavior COVID-19 - blood COVID-19 - diagnosis COVID-19 - drug therapy COVID-19 - mortality Hospitalization Humans International Cooperation Multicenter Studies as Topic Patient Selection Randomized Controlled Trials as Topic Risk Assessment Risk Factors Thrombosis - blood Thrombosis - diagnosis Thrombosis - mortality Thrombosis - prevention & control Treatment Outcome Venous Thromboembolism - blood Venous Thromboembolism - diagnosis Venous Thromboembolism - mortality Venous Thromboembolism - prevention & control

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