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目的:全身麻酔中に起こる眼圧変動の報告。対象:子宮筋腫の摘出術を受ける女性15例を対象とした。年齢は32~55歳(平均45歳)である。全例に眼疾患の既往はなかった。方法:麻酔の維持には亜酸化窒素とイソフルランを用いた。シェッツ眼圧計による眼圧測定を,術前投薬前,術前投薬後30分,全身麻酔導入直後,導入1時間後,覚醒時に行った。結果:眼圧は前投薬前と比較し,全身麻酔導入直後と導入1時間後で有意に低下していた(p<0.05)。覚醒時以降では,術前投薬前の眼圧と差がなかった。結論:亜酸化窒素とイソフルランによる全身麻酔中は眼圧が低下する。
Purpose:To report changes in intraocular pressure(IOP)during general anesthesia. Material:This prospective study was entered by 15 adult females who underwent surgery for myoma of uterus. They were aged from 32 to 55 years,average 45 years. Method:General anesthesia was maintained by nitrous oxide and isoflurane. Measurement of IOP by Schiötz tonometer was made before premedication,30 minutes after premedication,immediately and 1 hour after induction of general anesthesia,and 1 hour after awakening. Results:IOP decreased significantly immediately and 1 hour after induction of general anesthesia from the baseline level(p<0.05). IOP returned to baseline level after awakening. Conclusion:IOP decreased during general anesthesia by nitrous oxide and isoflurane.
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