The Efficacy of Isocapnic Hyperpnoea to Accelerate Recovery After General Anesthesia With Sevoflurane

Inclusion criteria: 1. Elective gynecological procedure 2. ASA I-III 3. Age 18-80 years 4. Signed informed consent Exclusion criteria: 1. ASA IV 2. Patients with contra-indications to Sevoflurane anesthesia or other anesthetics included in the protocol 3. Active smoking, asthma or other history of hyper-reactive airway disease 4. History of chronic obstructive lung disease limiting exercise 5. History of angina, previous myocardial infarction, valvular heart disease, or heart surgery 6. Presence of heart murmurs or neck bruits 7. ECT abnormalities including atrial fibrillation, prolonged P-R interval, prolonged Q-T interval, presence of Q waves in inferior, anterior or lateral leads, criteria for left ventricular hypertrophy, T-wave abnormalities, 8. History of difficult airway access 9. Pulmonary hypertension and/or right ventricle dysfunction 10. History of bulous emphysema, and/or spontaneous pneumothorax 11. History of alcohol or drugs abuse 12. Known history of psychiatric illness and/or medications 13. Patients that required postoperative mechanical ventilation for any reason