ArticleIntensive care medicine experimental2023
Reduced anticoagulation strategy is associated with a lower incidence of intracerebral hemorrhage in COVID-19 patients on extracorporeal membrane oxygenation.
Article in Intensive care medicine experimental, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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Who cites it
8 citing papers in PubMed, 9 citations in OpenAlex.
- Case Report: Navigating the bleeding-thrombosis paradox: regional nafamostat anticoagulation in a post-intracerebral hemorrhage patient on VV-ECMO.Frontiers in medicine · 2026Article
- Mortality and complications in low-dose vs standard-dose unfractionated heparin anticoagulation for extracorporeal membrane oxygenation: a systematic review and meta-analysis.Research and practice in thrombosis and haemostasis · 2026Article
- Outcome of patients with COVID-19 supported by veno-venous extracorporeal membrane oxygenation with major bleeding: a single centre experience.BMC anesthesiology · 2025Article
- Anticoagulation in venovenous extracorporeal membrane oxygenation.Frontiers in medicine · 2025Review
- Different low activated clotting time target anticoagulation protocols for patients during extracorporeal membrane oxygenation management: a retrospective cohort study.Frontiers in medicine · 2025Article
- Reply to Wendel-GarciaAmerican journal of respiratory and critical care medicine · 2024Article
- Low-Dose Anticoagulation to Prevent Intracranial Hemorrhage in COVID-19 Patients under Extracorporeal Membrane Oxygenation Support.American journal of respiratory and critical care medicine · 2024Article
- D-dimer trends in ECMO patients: don't shoot the messenger.Intensive care medicine · 2023Article
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Authors and funding
17 authors at 4 institutions in 3 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundOptimal anticoagulation strategies for COVID-19 patients with the acute respiratory distress syndrome (ARDS) on venovenous extracorporeal membrane oxygenation (VV ECMO) remain uncertain. A higher incidence of intracerebral hemorrhage (ICH) during VV ECMO support compared to non-COVID-19 viral ARDS patients has been reported, with increased bleeding rates in COVID-19 attributed to both intensified anticoagulation and a disease-specific endotheliopathy. We hypothesized that lower intensity of anticoagulation during VV ECMO would be associated with a lower risk of ICH. In a retrospective, multicenter study from three academic tertiary intensive care units, we included patients with confirmed COVID-19 ARDS requiring VV ECMO support from March 2020 to January 2022. Patients were grouped by anticoagulation exposure into higher intensity, targeting anti-factor Xa activity (anti-Xa) of 0.3-0.4 U/mL, versus lower intensity, targeting anti-Xa 0.15-0.3 U/mL, cohorts. Mean daily doses of unfractionated heparin (UFH) per kg bodyweight and effectively measured daily anti-factor Xa activities were compared between the groups over the first 7 days on ECMO support. The primary outcome was the rate of ICH during VV ECMO support.
results141 critically ill COVID-19 patients were included in the study. Patients with lower anticoagulation targets had consistently lower anti-Xa activity values over the first 7 ECMO days (p < 0.001). ICH incidence was lower in patients in the lower anti-Xa group: 4 (8%) vs 32 (34%) events. Accounting for death as a competing event, the adjusted subhazard ratio for the occurrence of ICH was 0.295 (97.5% CI 0.1-0.9, p = 0.044) for the lower anti-Xa compared to the higher anti-Xa group. 90-day ICU survival was higher in patients in the lower anti-Xa group, and ICH was the strongest risk factor associated with mortality (odds ratio [OR] 6.8 [CI 2.1-22.1], p = 0.001).
conclusionsFor COVID-19 patients on VV ECMO support anticoagulated with heparin, a lower anticoagulation target was associated with a significant reduction in ICH incidence and increased survival.
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