Sato et al identified risk factors for an unfavorable outcome after a minor ischemic stroke. These can help to identify a patient who may benefit from more aggressive management. The authors are from the National Cerebral and Cardiovascular Center in Osaka and the Stroke Unit Multicenter Observational (SUMO) Trial.
Patient selection: minor ischemic stroke (NIHSS <= 3), prestroke disability 0 or 1 by modified Rankin scale
Unfavorable outcome: modified Rankin scale 3 to 6 at 90 days
Risk factors associated with an unfavorable outcome:
(1) female gender (OR 2.0)
(2) age >= 72 years (OR 2.8)
(3) leg weakness (OR 1.7)
(4) extinction/inattention (OR 5.6)
(5) intra- and/or extra-cranial vascular occlusion/narrowing (>= 50% narrowing in diameter or occlusion on imaging studies including carotid arteries, OR 2.8)
The risk of an unfavorable outcome increases with the number of risk factors.
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