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休克指数(shockindex,SI)是脉搏(次/min)与收缩压[mmHg(1mmHg=0.133kPa]的比值,是反映血流动力学的临床指标之一,可用于粗略估计失血量及休克程度分级。通常认为,该指数正常值为0.5～0.7。失血达循环血量的1/4以下,SI<1;
Shock index (SI) is the ratio of pulse (min / min) to systolic blood pressure [mmHg (1mmHg = 0.133kPa]). It is one of the clinical indicators that reflect hemodynamics and can be used to roughly estimate blood loss and grade of shock .It is generally believed that the normal index of 0.5 to 0.7. Loss of blood up to 1/4 of the circulating blood volume, SI <1;