Driving Pressure Guided Ventilation Versus Conventional Lung Protective Strategy in Morbid Obese Patients Undergoing Laparoscopic Bariatric Surgery

This study will be conducted to evaluate the effect of driving pressure guided ventilation compared with conventional protective lung ventilation during laparoscopic bariatric surgeries in morbid obese patients. * the primary outcome: Intraoperative oxygenation measured by the arterial partial pressure of oxygen (PaO2). * the secondary outcome: incidence of early postoperative pulmonary complications e.g., postoperative hypoxia, the need for supplementary oxygen, atelectasis, barotrauma, and respiratory failure.