Introduction
Ventricular septal defect (VSD) is the most common
congenital heart defects, accounting for 25% to 30% of all
children born with structural heart disease.1, 3 Such defects
occur both in isolation and as part of most complex forms of
congenital heart disease. Isolated VSD occurs in approximately
2 out of every 1,000 live births.2 In the VSDs that need closure,
surgical treatment is standard and aimed at prevention of
pulmonary hypertension (PHT), heart failure, endocarditis,
or, in some instances, progressive aortic valve insufficiency
(AI).3 Kirklin and colleagues described VSD closure using
extracorporeal circulation in 19574, although it still entails
both morbidity and mortality risks. The purpose of this study
was to review the results of surgical closure of isolated VSD
with pulmonary hypertension in patients under 15 years of age
in Songklanagarind Hospital.