Key result
Sufficient pre-stroke anticoagulation is linked to ~45% lower severe stroke risk in nonvalvular AF.
Why the study?
Because optimal anticoagulation reduces ischemic stroke risk in nonvalvular AF, the authors evaluated how prior anticoagulation with VKAs or DOACs affects ischemic stroke outcomes.
Does sufficient prior anticoagulation reduce stroke severity and infarct volume in patients with nonvalvular atrial fibrillation experiencing an ischemic stroke?
Observational (n=487)
No
Does sufficient prior anticoagulation reduce stroke severity and infarct volume in patients with nonvalvular atrial fibrillation experiencing an ischemic stroke?
Effect estimate: OR 0.553 (95% CI 0.308-0.992)
Absolute Event Rate: 36.5% vs 52.1%
p-value: p=0.047
Sufficient pre-stroke anticoagulation, particularly with DOACs, is associated with reduced stroke severity and smaller infarct volumes in patients with nonvalvular atrial fibrillation.
No takes yet. Share an insight, caveat, or question.
May encourage ensuring sufficient anticoagulation in AF; extends prevention data but remains hypothesis-generating for severity.
Kim et al. (2023) conducted an observational in Ischemic stroke and nonvalvular atrial fibrillation (n=487). Sufficient anticoagulation (VKA or DOAC) vs. No anticoagulation or undertreated VKA was evaluated on Severe stroke (NIHSS ≥ 5 at admission) (OR 0.553, 95% CI 0.308-0.992, p=0.047). Sufficient pre-stroke anticoagulation with VKAs or DOACs independently reduced the risk of severe stroke (OR 0.553) compared to no or undertreated anticoagulation in patients with nonvalvular AF.
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