ventricular septal defect
Also written as: VSD — ventricular septal defect
Congenital heart defect characterized by an abnormal opening in the wall separating the heart's lower chambers.
Full Definition
A congenital cardiac malformation consisting of an abnormal communication between the left and right ventricles through the interventricular septum. VSDs are classified by location (membranous, muscular, inlet, or outlet) and size (small, moderate, or large). Small defects may close spontaneously, while larger defects can cause left-to-right shunting, volume overload, and pulmonary hypertension. Pathological examination reveals deficient septal tissue with varying degrees of associated structural abnormalities.
Usage
Usage note: VSD is acceptable abbreviation after first use; specify location and size when known.
In Context
- "Echocardiography confirmed a moderate muscular ventricular septal defect with left-to-right shunting." — Pediatric cardiology report
- "Surgical repair of the ventricular septal defect was performed using a synthetic patch." — Operative report