Core Concepts
Comparing clinical outcomes of prophylactic vs. therapeutic anticoagulation in hospitalized COVID-19 patients.
Abstract
Abstract and Introduction:
Studies show benefits of anticoagulation in COVID-19 patients.
Controversy exists over the optimal anticoagulant dosage.
Study in Ethiopia compares outcomes of prophylactic vs. therapeutic anticoagulation.
Methods:
Retrospective cohort study on hospitalized COVID-19 patients.
Primary outcome: in-hospital mortality.
Subgroup analyses for critical and severe COVID-19 patients.
Results:
472 patients included, split between prophylactic and therapeutic anticoagulation.
Therapeutic dose linked to higher inpatient mortality in critical patients.
No significant association between anticoagulation dosage and mortality in severe patients.
Incidence of thrombosis slightly lower in therapeutic group for severe patients.
Major bleeding events only in therapeutic group, statistically significant.
Conclusion:
Results contradict current recommendations on anticoagulation dosage for COVID-19 patients.
Calls for randomized controlled trials in resource-limited settings.
Stats
A total of 472 hospitalized COVID-19 patients were included in this study.
49.8% received therapeutic anticoagulation, and 50.2% received prophylactic dose.
In critical COVID-19 subgroup, therapeutic dose was associated with higher inpatient mortality (AOR 2.27, 95% CI, 1.18—4.35, p = 0.013).
In severe COVID-19 subgroup, anticoagulation dosage was not associated with inpatient mortality (OR, 1.02, 95% CI, 0.45 – 2.33, p = 0.958).
Incidence of thrombosis was slightly lower in the therapeutic group for severe COVID-19 patients (AOR 0.15, 95% CI, 0.02 – 1.20, p = 0.073).
All six major bleeding events were recorded in patients in the therapeutic subgroup, statistically significant (p = 0.013).
Quotes
"Our results are not consistent with current recommendations on anti-coagulation dose for hospitalized patients with COVID-19."