Wakamatsu Narutomo, Makino Sawa, Fujimoto Shoji, Shimazu Akemi, Toriumi Shinichi
Department of Anesthesia, Kochi National Hospital, Kochi 780-8077.
Masui. 2005 Jan;54(1):14-8.
In scheduled surgery, drinking is generally restricted for 6-8 hours before operation to avoid aspiration pneumonia induced by aspiration of residual gastric contents. However, the restriction is hard for patients and also there is no evidence of reduction of such a risk. We examined the correlation between water intake and residual gastric content.
We studied 60 patients scheduled for gynecological operations (ASA 1 or 2). They were allowed to drink clear water freely until two hours before operation, and timing and volume of their drinking were recorded. In addition, volume and pH of the residual gastric content were measured at induction of anesthesia.
The mean volumes of fluids they had are 157 ml (range 0-750 ml) in the morning, and 486 ml (range 80-1300 ml) in the afternoon. The patients took more water as the scheduled time of operation became nearer. There was no correlation between the volume of preoperative drinking with the volume and pH of gastric content.
Intake of clear water until two hours before surgery has been shown to be safe and contribute to patients' satisfaction.
在择期手术中，通常在术前6 - 8小时限制饮水，以避免因误吸残余胃内容物而诱发吸入性肺炎。然而，这种限制对患者来说很困难，而且也没有证据表明这种风险会降低。我们研究了饮水量与残余胃内容物之间的相关性。
我们研究了60例计划进行妇科手术的患者（美国麻醉医师协会分级1或2级）。在手术前两小时前，允许他们自由饮用清水，并记录他们饮水的时间和量。此外，在麻醉诱导时测量残余胃内容物的量和pH值。
他们上午的平均饮水量为157毫升（范围0 - 750毫升），下午为486毫升（范围80 - 1300毫升）。随着预定手术时间临近，患者饮水更多。术前饮水量与胃内容物的量和pH值之间没有相关性。
术前两小时前饮用清水已被证明是安全的，并且有助于提高患者满意度。
