Safety of Etomidate-propofol Mixture vs. Propofol for Total Intravenous Anesthesia in Elderly Patients Undergoing Abdominal Surgery

This study is comparing two anesthesia regimens — one using propofol alone and one using a mix of propofol and etomidate — in elderly patients having abdominal surgery, to see which is safer and causes fewer side effects. **You may be eligible if...** - You are scheduled for planned abdominal surgery under general anesthesia expected to last 1–4 hours - Your anesthesia risk level is ASA class I–III - Your BMI is between 18 and 28 **You may NOT be eligible if...** - You had septic shock or multiple organ failure in the last 14 days - You had a stroke or mini-stroke (TIA) in the last 3 months - You had a heart attack or unstable chest pain in the last 3 months - You have uncontrolled diabetes or diabetic complications - You have very high potassium levels in your blood - You are pregnant or breastfeeding Talk to your doctor to see if this trial is right for you.