Effect of Intraoperative Position Change on Hemodynamics and Electrocardiography

"Intraoperative 12-lead electrocardiography (EKG) measurement during laparoscopic sleeve gastrectomy in morbidly obese patients:~In all patients, pneumoperitoneum CO₂ intraabdominal pressure will be studied as 15 cmH₂O.~Intraoperatively, 12-lead ECG will be obtained at five position measurement points:~Procedure1. Supine-monitored; Procedure 2. After induction; Procedure 3. Under general anesthesia-Supine-abdominal inflated; Procedure 4. Abdominal inflated-(30% vertical) Reverse Trendelenburg; Procedure 5. Abdominal deflated-(30% vertical) Reverse Trendelenburg.~Hemodynamic monitoring \[systolic blood pressure, diastolic blood pressure, mean arterial pressure, heart rate \] was recorded at 5 simultaneous measurement points.~All hemodynamic measurements and ECG recordings will be performed 3 minutes after the position change to ensure standardization, to allow the response to settle after the position change, and to prevent the possibility of exaggerated-incorrect data."