- Features given in the question are suggestive of VSD VENTRICULAR SEPTAL DEFECT : - Communication b/w 2 ventricles of hea - 90% are located in membranous pa of ventricular septum with variable extension into muscular septum. - Clinical features: Usually presents at 6-10 weeks of age Recurrent episodes of pneumonia Hea failure Failure to thrive X-ray showing cardiomegaly & pulmonary plethora -->MC congenital hea disease in children--> VSD -->MC congenital acyanotic hea disease in children--> VSD -->MC congenital hea diseases affected by infective endocarditis in children--> VSD