Transcatheter closure of the right atrioventricular valve in a double-inlet left ventricle patient following fontan operation

In this new case study, we report a successful percutaneous transcatheter right atrioventricular (AV) valve closure procedure using a patent foramen ovale occluder (Occlutech International AB, Helsingborg, Sweden) in an 11-year-old boy who had previously undergone a Fontan procedure and surgical right AV valve closure for double-inlet left ventricle, hypoplastic right ventricle, ventricular arterial discordance and coarctation of the aorta and developed severe right AV valve regurgitation during follow-up. We aimed to share our experience regarding the difficulties encountered during the procedure.