Preadmission oral anticoagulant treatment and clinical outcome among patients hospitalized with acute stroke and atrial fibrillation
Stroke,  Clinical Article

Johnsen SP, et al. – The authors performed a nationwide historic follow–up study using data from population–based healthcare registries to assess the effect of preadmission oral anticoagulant treatment (OAT) on stroke outcomes further. Only a minority of hospitalized patients with acute stroke with atrial fibrillation received OAT at the time of stroke. Preadmission OAT was associated with less severe stroke and lower 30–day mortality rate in a propensity score–matched analysis.

Methods

  • The authors identified 11 356 patients with atrial fibrillation admitted to hospital with acute stroke (including ischemic stroke and intracerebral hemorrhage) between 2003 and 2009.
  • Propensity score–matched analyses were used to compare stroke severity (Scandinavian Stroke Scale score) and mortality among 2175 patients with preadmission OAT and 2175 patients without preadmission OAT.

Results

  • A total of 2492 (21.9%) patients received OAT at the time of their stroke.
  • Preadmission OAT was associated with a lower risk of severe stroke (Scandinavian Stroke Scale score at time of admission, <30 point; propensity score–matched odds ratio, 0.74; 95% confidence interval, 0.63–0.86) and lower 30–day mortality rate (propensity score–matched adjusted odds ratio, 0.83; 95% confidence interval, 0.71–0.98).

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