French Observatory of Congenital Ventricular Septal Defect With Pulmonary Overload

Inclusion Criteria: * Patient at least 1 year old * Having a perimembranous VSD with pulmonary overload defined by "a left-right shunt and a z-score of the left ventricular end-diastolic diameter\> = 2". * Consent for inclusion in the study was signed by the parents or legal guardian for minors, by the patient for the adults. Exclusion Criteria: * Congenital heart disease associated with membranous VSD * Stenosis of the left ventricular outflow tract (average gradient ≥20 mmHg) * Aortic insufficiency * sub-pulmonary stenosis (mean gradient ≥20 mmHg) * Tricuspid insufficiency ≥ 2/4 * History of cardiac surgery or cardiac interventional catheterization * Shunt right-left through the VSD * Pulmonary Arterial Hypertension defined on the data of a catheterization by PAPM\> = 25 mmHg and pulmonary vascular resistance\> = 3 UW.m² * Active infectious endocarditis * Cardiac insufficiency according to the "ESC 2016" criteria, other than a symptomatology of pulmonary hyper flow during the first year of life. Heart failure is defined by the presence of clinical signs of heart failure associated with a structural or cardiac functional abnormality resulting in a decrease in cardiac output and / or an increase in filling pressures. * History of persistent or chronic atrial arrhythmia (atrial flutter, atrial tachycardia or chronic atrial fibrillation or requiring electrical cardioversion, drug therapy or endocavitary ablation) * History of sustained ventricular arrhythmia (duration\> = 30 seconds) * Complete BAV * Refusal of the patient or guardian to participate in the study