Hypotension on induction

This trial tests whether a 5-microgram or 10-microgram bolus of norepinephrine is better at quickly raising dangerously low blood pressure during emergency abdominal surgery. Low blood pressure after anesthesia is common in these surgeries and can harm organs if not treated fast.…

This study will check if a simple ultrasound of the neck vein, done before and right after anesthesia, can predict low blood pressure during surgery and kidney injury afterward. Researchers will observe 150 adults having major abdominal surgery. The goal is to see if changes in t…

This study will check if a score called EASIX, calculated from routine blood tests, can predict dangerous low blood pressure after anesthesia in frail patients having non-cardiac surgery. Researchers will monitor 160 frail patients' blood pressure closely after they receive anest…

This study watches 160 heart surgery patients who take blood pressure medications to see if taking more than one drug increases the risk of a sudden drop in blood pressure after anesthesia. The researchers will measure how low blood pressure goes and how long it stays low. No new…

This study is testing whether a simple neck ultrasound can predict dangerous drops in blood pressure after anesthesia in adults with chronic liver disease. Researchers will measure blood flow in the carotid artery before and after anesthesia in 35 patients. If the method works, i…