Patent foramen ovale

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 a new device called the Occlutech Flex II PFO Occluder, which is used to close a small hole in the heart (PFO) that can cause strokes. The trial involves 450 people who have had a stroke with no clear cause and a PFO. Researchers want to see if the new device wor…

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 looks at a device called the AMPLATZER PFO Occluder, which is implanted to close a hole in the heart (PFO) in people who have had a stroke. Over 1,200 participants are being followed for up to 5 years to see if the device prevents another stroke and is safe. The goal i…

This study is checking how well a device called the GORE® CARDIOFORM Septal Occluder works and how safe it is for people who have had a stroke caused by a hole in the heart (PFO). Researchers will follow 300 patients in Japan for 12 months after the device is implanted. The goal …

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…

Researchers test whether flecainide, an antiarrhythmic drug, can prevent atrial arrhythmias in adults who have a patent foramen ovale (PFO) closed after a cryptogenic stroke. Participants receive flecainide or standard care for 3 to 6 months. An insertable cardiac monitor records…

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…

Researchers are running an international registry to follow adults who had an ischemic stroke or transient ischemic attack and also have a patent foramen ovale, a small opening between the upper chambers of the heart. The registry collects real-world information on how these pati…

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.