ventricular septal defect
Also written as: VSD — Ventricular Septal Defect
A congenital heart defect involving an abnormal opening between the left and right ventricles.
Full Definition
A ventricular septal defect is the most common congenital heart malformation, characterized by an abnormal communication between the left and right ventricular chambers. The defect allows oxygenated blood from the left ventricle to flow into the right ventricle, potentially leading to pulmonary overcirculation and increased workload on both ventricles. VSDs are classified by location (membranous, muscular, inlet, or outlet) and size, which determines hemodynamic significance and surgical approach. Anesthetic considerations include managing left-to-right shunting and potential for paradoxical air embolism.
Usage
Usage note: Commonly abbreviated as VSD; distinguish from ASD (atrial septal defect).
In Context
- "The large ventricular septal defect required patch closure using cardiopulmonary bypass." — operative report
- "Preoperative catheterization revealed significant left-to-right shunting through the ventricular septal defect." — pre-surgical evaluation