To the Editor: Anderson et al. (June 22 issue)1 report that head positioning did not influence outcome in patients with acute stroke. The lying-flat position theoretically increases cerebral perfusion, which may alleviate acute ischemia through the recruitment of collaterals.2 However, in the Head Positioning in Acute Stroke Trial (HeadPoST), reported by Anderson et al., many patients had conditions that presumably were not the result of large perfusion defects: specifically, there were patients with stroke mimics (4.9%), lacunar stroke (30.2%), or intracerebral hemorrhage (8.4%). Moreover, the low median scores on the National Institutes . . .

中文翻译：

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急性中风的头部定位

致编辑：安德森等。（6月22日发行）1报告指出，头部定位不影响急性中风患者的预后。平躺的姿势理论上可增加脑灌注，可通过补充侧支来减轻急性缺血。2然而，在安德森等人报道的急性卒中试验中的头部定位（HeadPoST）中，许多患者的病情可能是并非大量灌注缺陷的结果：具体而言，有中风模仿者（4.9％），腔隙性中风（30.2％）或脑出血（8.4％）。此外，美国国立学院的中位分数较低。。。