Partridge B L
Department of Anesthesiology, University of California, San Diego Medical Center 92103.
J Clin Monit. 1987 Oct;3(4):263-8. doi: 10.1007/BF03337381.
The use of pulse oximetry as a noninvasive method to assess intravascular volume status is described. Pulse oximeters providing a continuous display of the pulse waveform offer a new method of estimating relative volume status during positive-pressure ventilation. Like intraarterial pressure tracings, the peaks of the pulse waveform demonstrate increased variation in response to positive-pressure ventilation when a patient becomes hypovolemic. Pulse oximeter waveform tracings were compared with central venous pressure and intraarterial pressure tracings in 12 patients undergoing major operative procedures. A significant correlation (r = 0.61) was seen between pulse waveform variation and systolic pressure variation, which has previously been shown to be a sensitive indicator of hypovolemia. When data from individual patients were analyzed separately, the correlation between pulse waveform variation and systolic pressure variation was as high as 0.88.
本文描述了使用脉搏血氧饱和度测定法作为评估血管内容量状态的一种非侵入性方法。能够持续显示脉搏波形的脉搏血氧仪提供了一种在正压通气期间估计相对容量状态的新方法。与动脉内压力描记图一样，当患者出现血容量不足时，脉搏波形的峰值显示出对正压通气的反应中变化增加。对12例接受大手术的患者的脉搏血氧仪波形描记图与中心静脉压和动脉内压力描记图进行了比较。脉搏波形变化与收缩压变化之间存在显著相关性（r = 0.61），收缩压变化先前已被证明是血容量不足的敏感指标。当分别分析个体患者的数据时，脉搏波形变化与收缩压变化之间的相关性高达0.88。
