Results: Ventilation and hemodynamic parameters during anesthesia (mean±SD) for P-LMA and ETT were: SpO2 99.52 ± 0.38% & 99.52 ± 0.39%, ETCO2 38.14 ± 3.79 mmHg & 37.86 ± 4.18 mmHg, airway pressure 18.11 ± 1.99 cmH2O & 21.32 ± 3.28 cmH2O, PR 73.05 ± 1.78 times / m&77.59 ± 3.86 times / m, SBP 114.53 ± 8.20 mmHg &120.60 ± 9.38 mmHg, DBP 70.58 ± 5.00 mmHg & 73.12 ± 6.71 mmHg.