Effect of Neuromuscular Block Depth on Driving Pressure and Postoperative Respiratory Events in Abdominal Surgeries

Inclusion Criteria: * Elective abdominal surgery under general anesthesia that is expected to last longer than one hour * ASA I-II-III * Age ≥18 years * Written informed consent Exclusion Criteria: * Refusal to participate in the study * ASA ≥ IV * Age \<18 * Obesity (BMI\>30) and cachexia (BMI \<18) * Laparoscopic surgery * Emergency procedure * Allergy to drugs used during induction and maintenance of general anesthesia * Presence of psychiatric/neurologic/neuromuscular disease * Risk of malignant hyperthermia or having any relative with history of malignant hyperthermia * Use of medications that may affect neuromuscular function (anticonvulsants, aminoglycosides, magnesium salts, etc.) * Pregnancy * Presence of advanced chronic lung disease (asthma, COPD, etc.) * Presence of advanced liver and renal disease (creatinine\>1.6, liver function tests above twice the normal range)