Comparing two blood pressure medications after heart surgery

After heart surgery, some patients develop a serious condition called vasoplegic syndrome, where blood pressure drops dangerously despite adequate fluid given through an IV. This trial compares vasopressin to norepinephrine, two medications that work differently to raise blood pressure. Researchers want to understand which medication works better at improving the heart's function and blood flow in this specific situation.

Vasoplegic syndrome after heart surgery is life-threatening and doesn't respond well to standard treatments. Although norepinephrine is commonly used, this medication may have unwanted side effects. Vasopressin works through a different mechanism in the body and might be equally or more effective with fewer risks — but this needs to be tested directly.