Results: The parameters about ventilation and hemodynamic during anaesthesia between PLMA and endotracheal tube included: SpO2 were 99.04 ± 0.62% and 99.12 ± 0.49%, ETCO2 were 34.45 ± 1.92 mmHg and 34.39 ± 2.09 mmHg, airway pressure were 14.33 ± 2.33 cmH2O and 16.86 ± 2.25 cmH2O, systolic blood pressure were 106.98 ± 25.29 mmHg and 134.79 ± 35.3 mmHg, diastolic blood pressure were 62.02 ± 14.72 mmHg and 75.34 ± 19.53 mmHg, pulses 77.51 ± 11.74 time / min and 93.47 ± 17.38 time / min.