Cardiac arrhythmia

This study tests a modified Maze procedure done during heart surgery to treat atrial fibrillation, a common heart rhythm problem. About 151 adults with AFib scheduled for heart surgery will receive the procedure, which uses heat or cold to create scar lines in the heart and close…

This study aims to make MRI scans clearer for people with heart arrhythmia (irregular heartbeat). Researchers will test two special imaging methods on 135 participants—105 with arrhythmia and 30 healthy volunteers—to see if they reduce blurry images caused by the irregular rhythm…

This study tests whether a balloon device, called REBOA, can be safely used by emergency teams outside a hospital to improve blood flow in people whose heart has stopped (cardiac arrest). The balloon is inserted into the main artery and inflated to redirect blood to the heart and…

This study tests whether a 12-lead wearable Holter monitor can be worn during MRI, CT, X-ray, and echocardiography without affecting image quality or the device's ability to record heart signals. Researchers will enroll 500 adults who need these imaging exams and will check for e…

This study is building a large gene bank by collecting blood samples and health information from nearly 10,000 people who have had heart catheterization or cardiac CT scans. The goal is to identify genetic and other factors that contribute to coronary artery disease. Participants…

This study looks at how different ways of helping children breathe during general anesthesia might affect the success of a heart procedure called radiofrequency ablation. The procedure uses heat to fix abnormal heart rhythms. The study will compare two breathing methods in 100 ch…

This study gathers information from 1,000 adults who have or will receive a cardiac implantable electronic device (CIED) for heart rhythm problems like bradycardia or tachycardia. Researchers collect details about the device, the implant procedure, and patient characteristics to …