These parameters were measured in both groups at time zero before pneumoperitoneum ( TP@ ) ; at time @ ( TP@ ) when IPP reaches @mmHg in both groups ; at time @ ( TP@ ) after five min with IPP = @mmHg in P@ and after @min with IPP = @mmHg at P@ ; and at time @ ( TP@ ) after @min with IPP = @mmHg in P@ and with return of IPP from @ to @mmHg , starting @min after TP@ in P@ .