全麻诱导期不同面罩通气压力对肥胖患者胃胀气的影响Influence of different mask ventilation pressure on gastric insufflation in obese patients during anesthesia induction
陈自洋,周田田,李楠,李竞进
摘要(Abstract):
目的研究全身麻醉诱导时不同面罩通气压力对肥胖患者胃胀气的影响。方法选取2019年10月-2020年10月在南京医科大学第一附属医院麻醉科全麻下行腹腔镜胃减容手术的80例患者为研究对象,患者年龄18~65岁,平均年龄36.5岁,BMI 30~40 kg/m~2,ASA分级I或Ⅱ级。根据麻醉诱导时预设的面罩通气压力,将患者随机分为4组(n=20):12 cmH_2O通气组(P12组)、16 cmH_2O通气组(P16组)、20 cmH_2O通气组(P20组)、24 cmH_2O通气组(P24组)。常规麻醉诱导,待患者意识消失后,压力控制面罩通气120 s。记录患者入室时(T_0),意识消失即刻(T_1),面罩通气60 s(T_2)、120 s(T3)及气管插管成功后即刻(T4)的脉搏氧饱和度(SpO2)和呼气末二氧化碳分压(P_(ET)CO_2);超声测量面罩通气前后患者胃窦部截面积(cross-sectional area, CSA)和超声图像中"彗尾征"2种方式评估胃进气情况。结果与P12组比较,P16组、P20组及P24组T_3、T_4时SpO_2水平升高,P_(ET)CO_2水平降低,差异有统计学意义(P<0.05)。与T_1时比较,T_3时P20组、P24组CSA增加,差异有统计学意义(P<0.05);与P12组和P16组比较,P20组、P24组胃胀气发生率升高,差异有统计学意义(P<0.05)。结论全麻诱导期维持16 cmH_2O的面罩通气压力可确保肥胖患者有效的面罩通气,能最大程度地减少胃胀气的发生。
关键词(KeyWords): 肥胖患者;面罩通气压力;胃窦部超声检查;胃胀气
基金项目(Foundation): 国家自然科学基金(81701375)
作者(Author): 陈自洋,周田田,李楠,李竞进
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