METHODS	These parameters were measured in both groups at time zero before pneumoperitoneum ( TP0 ) ; at time 1 ( TP1 ) when IPP reaches 12mmHg in both groups ; at time 2 ( TP2 ) after five min with IPP = 12mmHg in P12 and after 5min with IPP = 20mmHg at P20 ; and at time 3 ( TP3 ) after 10min with IPP = 12mmHg in P12 and with return of IPP from 20 to 12mmHg , starting 10min after TP1 in P20 .\