Very Low Tidal Volume vs Conventional Ventilatory Strategy for One-lung Ventilation in Thoracic Anesthesia

The purpose of this study is to determine if a protective ventilatory strategy during one-lung ventilation (OLV) based on low tidal volume, PEEP and alveolar recruitment maneuver can reduce Acute Respiratory Distress Syndrome (ARDS) and Postoperative pulmonary complications (PPCs) after major pulmonary resection. Primary endpoint: Evaluation of postoperative ARDS incidence Secondary endpoint: Evaluation od PPC incidence and postoperative outcomes (other complications, unplanned Intensive Care Admission, hospital and ICU length of stay, in-hospital mortality)