背景 近年来，人们提出了各种手术应激引起的伤害性反应监测系统，以保持最佳的镇痛平衡。手术容积指数（surgical pleth index，SPI）是一种由手指光电容积描记信号得到的监测工具，用于检测全身麻醉期间伤害性感受与镇痛剂给药之间的平衡。 目的 综述SPI在临床麻醉应用中的进展。 内容 总结近年来SPI监测在临床麻醉中的应用。 趋向 SPI监测将使麻醉中伤害性感受的判断更趋完善，为麻醉的镇痛水平提供参考。
Background In recent years, a variety of surgically-induced nociceptive monitoring systems have been proposed to maintain optimal analgesic balance. Surgical pleth index (SPI) is a monitoring tool obtained from finger photoplethysmography signals used to detect the balance between nociceptive and analgesic administration during general anesthesia. Objective To review the progress of SPI in clinical anesthesia. Content To summarize the application of SPI monitoring in clinical anaesthesia in recent years. Trend SPI monitoring will improve the judgment of nociceptive sensation in anesthesia and provide reference for the analgesic level of anesthesia.
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