Chest x rays may detect an<unk>  septal defect.  Chest x rays can be limited in imaging quality and may only supplement other imaging modalities. The chest x-ray may demonstrate cardiomegaly (right ventricle and right<unk>  enlargement), a prominent pulmonary artery segment and increased pulmonary vascular markings.
Atrial septal defect chest x ray
Patent ductus arteriosus chest x ray
Atrial septal defect physical examination
Patent ductus arteriosus physical examination
Ventricular septal defect physical examination
Right ventricular outflow tract obstruction physical examination
Pulmonary hypertension echocardiography or ultrasound
Pulmonic regurgitation physical examination