| Objective To discuss relatively reasonable ventilation methods in gynecological laparoscopic surgery.Methods minute ventilation of 3 groups is fixed to 100ml?kg-1?min-1,60 patients undergoing elective gynecological surgery were randomly divided into 3 groups, 20 patients in each group.Ventilation methods of the three groups is: tidal volume of group A is about 6ml?kg-1?min-1, ventilation frequency is 16 times?min-1; tidal volume of group B is about 8ml?kg-1?min-1, ventilation frequency is 12 times?min-1; tidal volume of group C is about 10ml?kg-1?min-1, ventilation frequency is 10 times ?min-1; The patients'arterial blood gas was measured to get PaCO2 , PaO2 and Ph at four time points:time before pneumoperitoneum,30 and 60 min after pneumoperitoneum,5min after the end of pneumoperitoneum; while the PETCO2,Ppeak,Pmean and Compl were observed at the same time and Pa- ETCO2 was calculated.Results airway pressure group C > group B> group A;Compl group C > group B> group A before pneumoperitoneum, but after pneumoperitoneum and after the end of pneumoperitoneum group C ,group B> group A; Pa- ETCO2 group B |
