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Effect of lung protective ventilation regimen on regional cerebral oxygen saturation during one-lung ventilation in elderly patients undergoing radical esophagus cancer resection
Author(s): 
Pages: 576-578
Year: Issue:  5
Journal: Chinese Journal of Anesthesiology

Keyword:  Positive-pressure respirationTidal volumeOximetryBrain;
Abstract: 目的 评价肺保护性通气策略对食管癌根治术老年患者单肺通气期间脑氧饱和度(rSO2)的影响.方法 择期行食管癌根治术的患者40例,年龄65~76岁,体重45~75 kg,ASA分级Ⅰ~Ⅲ级,采用随机数字表法,将其随机分为2组(n=20):常规通气组(CV组)和保护性通气组(PV组).静脉注射咪达唑仑0.05 mg/kg、舒芬太尼0.4μg/kg、罗库溴铵1mg/kg和异丙酚1.5mg/kg麻醉诱导,左侧插入左侧双腔支气管导管进行机械通气.CV组双肺通气和单肺通气期间VT均为10 ml/kg,吸呼比均为1:2;PV组双肺通气和单肺通气期间VT均为6 ml/kg,吸呼比均为1:2,并给予PEEP 5cm H2O;两组维持PETCO235-45 mm Hgo吸入2%七氟醚,间断静脉注射罗库溴铵0.5 mg/kg维持麻醉.于麻醉诱导前、双肺通气10 min和单肺通气30 min时,进行动脉血气分析,计算肺内分流率(Qs/Qt),记录rSO7.记录单肺通气期间低rS02(rS02积分>3000%)的发生情况.结果 与CV组比较,PV组单肺通气30 min时PaO2和rSO2升高,Qs/Qt降低,低rS)2发生率降低(P<0.05).结论 肺保护性通气策略可改善食管癌根治术老年患者单肺通气期间的氧合,降低肺内分流,减少低rSO2,的发生.
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