Renal artery atheroma

This trial tests whether a dietary supplement called Tertinat, containing epigallocatechin-3-gallate, can reduce major heart problems in people with atherosclerosis who have recently had bypass or stent surgery. Over two years, participants take either the supplement or a placebo…

This study tests whether a bedside device called Quantra can help doctors decide when to give blood transfusions during complex heart surgery. The device measures how well a patient's blood clots in real time. Researchers hope this will reduce the number of blood products (like r…

This study compares two ways to guide heart stent placement in people with complex artery blockages: using ultrasound (IVUS) versus standard X-ray. About 3,100 participants will be randomly assigned to one method. The goal is to see if ultrasound leads to larger stent openings an…