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监测自主呼吸小儿的呼气末CO_2(P_(ET)CO_2)是否可用来估计动脉血CO_2分压(PaCO_2),为此作者先选择40例ASAⅠ～Ⅱ级小儿全麻后在恢复室进行观察,其中体重<12kg(5.2～11.7kg)的Ia组和体重≥12kg(12.8～34.7kg)的Ib组各20例均经鼻插入16G导管5cm,远端与CO_2监测仪的标本采集管连接。CO_2监测仪采集标本为20ml·min~(-1)。患儿静卧,面罩或头罩吸氧,氧流量最低不小于2L·min~(-1)并以CO_2监测仪出
To monitor whether end-tidal CO 2 (P_ (ET) CO_2) in spontaneously breathing children can be used to estimate the PaCO_2 of arterial blood, 40 children with ASA Ⅰ ~ Ⅱ were enrolled in the recovery room after general anesthesia. 20 cases of group Ia weighing <12kg (5.2 ~ 11.7kg) and group Ib weighing 12kg ~ 34.7kg were all inserted 5cm of 16G catheter through the nose and the distal end was connected with the specimen collection tube of CO_2 monitor. CO_2 monitor collected specimens of 20ml · min ~ (-1). Children lying still, mask or hood oxygen, the minimum oxygen flow rate of not less than 2L · min ~ (-1) and CO_2 monitor out