Comparison of circulatory and respiratory changes in gynecological laparoscopic surgery:between carbon dioxide pneumoperitoneum and gasless iaparoscopy

Objective To investigate the effects of the CO_2 pneumoperitoneum on the respiratory and circulatory function during gynecological laparoscopic surgery in direct comparison to gasless laparoscopy.Methods 22 ASAⅠ～Ⅱcases with normal circulatory and respiratory function underwent gynecological laparoscopic operation were divided into group A(the gasless group,n=11) and B(the pneumoperitoneum group,n=11) according to different modus operandi.minute ventilation(MV),air way resistance(AWR),respiratory rate(RR),systolic blood pressure(SBP),diastolic blood pressure(DBP), mean arterial pressure(MAP),heart rate(HR),pulse oxygen saturation(SPO_2),partial pressure of carbon dioxide in artery(PaCO_2),partial pressure of oxygen in artery(PaO_2) were measured at 10 min after anesthesia(T0),10 min(T1),30 min(T2)and 60 min(T3) after pneumoperitoneum(PP) or abdo minal wall was suspended,20 min after deflation or abdo minal wall was put down(T4).Results These data were no differences between the two groups at T0.MV,AWR,PaCO_2 of the pneumoperitoneum group were higher while PH was lower significantly than those of the gasless group at T1,T2andT3(P0.05).HR of the pneumoperitoneum group was faster at T3(P0.05).MV of the pneumoperitoneum group was higher at T4(P=0.00).Conclusions CO_2 pneumoperitoneum have some effects on respiratory and circulatory function,while gasless laparoscopy can avoid these effects.