单肺通气时监测P_(ET)CO_2的研究

A STUDY OF THE MONITORING P_(ET)CO_2 DURING ONE-LUNG VENTILATION

目的 :通过研究 Pa- ETCO2 的变化和 PETCO2 与 Pa CO2 的相关性来评价单肺通气 ( OL V)时监测 PETCO2 的价值。方法 :选择 30例开胸手术的患者 ,分别于双肺通气 ( TL V) 2 0 min、OL V5 min,15 min,30 m in,6 0 m in测 PETCO2 与 Pa CO2 的值 ,计算 Pa- ETCO2 ,进行统计学处理。结果 :OL V时不同时段的 PETCO2 比 TL V时增大 ( P <0 .0 5 ) ,PETCO2 与 Pa CO2 相关 ( r =0 .4192 ,P =0 .0 0 0 6 ) ,但相关性低于 TL V时 ( r=0 .70 2 0 ,P =0 .0 0 3)。结论 :OL V时可用 PETCO2 来监测 Pa CO2 ,但可靠性较 TL V时下降 ,需间断监测 Pa CO2 来校正 PETCO2 。

Objective:to study the value of monitoring P ET CO 2 by investigated variation of Pa ET CO 2 and correlation of Pa ET CO 2 and PaCO 2 during Onelung ventilationMethods:thirty patients undergoing elective openthoracic operation were chosenMeasured the value of P ET CO 2 and PaCO 2 20 min following TLV and 5 min,15 min,30 min,60 min following OLV and Pa ET CO 2 was calculatedResults:values of Pa ET CO 2 at different time during OLV were significantly different from at 20 min during TLV (P<005)There was correlation between Pa ET CO 2 and PaCO 2 during OLV (r=0419 2,P=0006),But the correlation lower than that in TLV (r=0702 0,P=0003)Conclusion:It was available to estimate PaCO 2 by monitoring P ET CO 2 during OLVBut reliability is lower than that during TLVThus, it is necessary to measure PaCO 2 to correct P ET CO 2at intervals