Alveolar capillary dysplasia without misalignment of pulmonary veins

This international registry study looks at a small device called a transcatheter pulmonary flow restrictor, which doctors implant in the lung arteries of young children with congenital or acquired heart disease. The goal is to see whether the device safely and effectively control…

This trial investigates whether pulsed field ablation (PFA) can safely isolate the pulmonary veins in adults with congenital heart disease who experience atrial tachycardia. Participants will undergo PFA during a standard ablation procedure. The study measures how well the veins …

This study tests a behavioral program called Individualized Developmental Care (NIDCAP) for newborns with complex congenital heart disease. The program aims to reduce stress from the hospital environment by supporting parent involvement, creating a soothing setting, and adjusting…

This study looks at how well the Harmony Transcatheter Pulmonary Valve (TPV) works when used by doctors in everyday practice. It involves 174 people with congenital heart disease who need a new pulmonary valve. The main goal is to see if the valve works properly without needing a…

This early-phase trial tests whether giving stem cells (from a donor) during heart-lung bypass surgery is safe for infants under 6 months with certain congenital heart defects. Seventeen infants will receive the cells while undergoing heart repair. The main goal is to check for s…

This study tests whether propranolol, a drug often used for high blood pressure, can safely treat chylothorax—a buildup of lymphatic fluid—in children after open heart surgery. About 50 children aged 7 days to 18 years with congenital heart disease will receive either propranolol…

This study tests a new way to manage blood flow and oxygen in children right after heart surgery. The goal is to help their bodies use oxygen better during the critical first 8 hours, which may prevent dangerous drops in blood pressure or heart function. About 300 children weighi…

This study is testing a new type of heart valve called the Harmony TPV, which is placed using a thin tube (catheter) instead of open-heart surgery. It is for people with congenital heart disease who have a leaky pulmonary valve. The study will check if the valve works well and is…

This trial compares two ultrasound-guided nerve blocks—erector spinae plane block and modified pectoral fascial plane block—for pain control in children undergoing congenital heart surgery. Forty children will be randomly assigned to receive one of the blocks before their incisio…

This study at Boston Children's Hospital will test whether measuring thousands of proteins in a few drops of blood can predict which children with congenital heart disease will have serious complications after heart surgery. Researchers will collect blood samples from 60 children…

This study is collecting DNA and health information from 32,000 people with congenital heart defects. Researchers hope to find genetic causes and understand why outcomes vary. No treatment is being tested—this is a research study to gather knowledge.