Splinter W M, Schaefer J D, Zunder I H
Department of Anaesthesia, Children's Hospital, University of Ottawa, Ontario.
Can J Anaesth. 1990 Jul;37(5):498-501. doi: 10.1007/BF03006315.
This prospective, randomized, single-blind study of 121 healthy children aged 2 to 12 yr investigated the effect of clear fluids on gastric contents. Gastric fluid volume and pH were measured immediately following the induction of general anaesthesia and were not significantly affected by the ingestion of unlimited clear fluids up to three hours preoperatively. After a prolonged fast (mean fast 14 hr), gastric fluid volume was 0.39 +/- 0.37 ml.kg-1 and gastric pH was 1.7 +/- 0.4; after unlimited clear fluids (203 +/- 109 ml) up to three hours before surgery gastric fluid volume was 0.34 +/- 0.28 ml.kg-1 and gastric pH was 1.8 +/- 0.7 (mean +/- SD). Gastric fluid volume (ml.kg-1) increased in both the control and study groups as age increased, P less than 0.005. It is concluded that drinking clear fluid up to three hours before scheduled surgery does not have a measurable effect on gastric volume and pH of healthy children of ages 2 to 12 yr.
这项针对121名2至12岁健康儿童的前瞻性、随机、单盲研究,调查了清亮液体对胃内容物的影响。在全身麻醉诱导后立即测量胃液量和pH值,术前长达三小时摄入不限量的清亮液体对其无显著影响。经过长时间禁食(平均禁食14小时)后,胃液量为0.39±0.37 ml.kg-1,胃pH值为1.7±0.4;术前长达三小时摄入不限量的清亮液体(203±109 ml)后,胃液量为0.34±0.28 ml.kg-1,胃pH值为1.8±0.7(均值±标准差)。随着年龄增长,对照组和研究组的胃液量(ml.kg-1)均增加,P<0.005。得出的结论是,在预定手术前长达三小时饮用清亮液体,对2至12岁健康儿童的胃容量和pH值没有可测量的影响。