Post-Stroke Hypertension Correlates with Neurologic Recovery in Patients with Acute Ischemic Stroke.

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Abstract
To examine the clinical implications of post-stroke hypertension, defined as the rise in blood pressure on admission after the onset of ischemic stroke as compared with the blood pressure before stroke, and to assess the relationship between the value of post-stroke hypertension and neurologic recovery, we retrospectively studied 28 patients admitted to the hospital within 24 h (mean+/-SD, 6.7+/-7.0 h) after a first-ever, acute non-embolic ischemic stroke, whose blood pressure had been recorded at the outpatient clinic within 3 mo before stroke. The Canadian Neurological Scale was used to assess stroke severity, and neurologic recovery during the acute phase was calculated. The average duration of hospitalization was 18+/-9 d. The value of post-stroke hypertension and stroke severity on admission independently and significantly correlated with neurologic recovery (odds ratio, 1.06; 95% confidence interval, 1.00-1.12 and odd ratio, 0.20; 95% confidence interval, 0.06-0.72, respectively). There was also a significant linear correlation between the value of post-stroke hypertension and neurologic recovery (r= 0.50, p< 0.01). Furthermore, blood pressure after the onset of ischemic stroke was quite independent of blood pressure before stroke. We conclude that the value of post-stroke hypertension correlates with neurologic recovery in patients with acute non-embolic ischemic stroke. These results suggest that blood pressure control mechanisms change after the onset of acute ischemic stroke.

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