作者: Ken S Butcher , Thomas Jeerakathil , Michael Hill , Andrew M Demchuk , Dariush Dowlatshahi
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摘要: Background: Acute blood pressure (BP) reduction aimed at attenuation of intracerebral hemorrhage (ICH) expansion might also result in a harmful compromise of cerebral blood flow (CBF) in the region surrounding the hematoma. We tested the hypothesis that CBF in acute ICH patients is affected by BP reduction. Methods: Seventy-five patients with spontaneous ICH with baseline systolic BP>150 mmHg were randomly assigned to an intravenous antihypertensive treatment protocol (labetalol, hydralazine and enalapril) targeting a systolic BP of either <150 mmHg or <180 mmHg within 24 hours of symptom onset. Patients underwent CT perfusion (CTP) imaging 2 hours post-randomization. The primary endpoint was relative CBF (rCBF) within the 1 cm perihematoma region. Results: Treatment groups were balanced with respect to baseline systolic BP: 182±20 mmHg (<150 mmHg target group, n=39) vs. 184 …