Recurrent palpitation and supraventricular tachycardia in a patient with a restrictive ventricular septal defect

Ventricular septal defect (VSD) is the most commonly recognized congenital heart disease. The presentation in patients with VSD is variable depending on the size, location, hemodynamic consequences, and complications including bacterial endocarditis, pulmonary hypertension, and cardiac arrhythmias. The most common cardiac arrhythmias in unoperated VSD are premature ventricular contractions (isolated, couplets, and multiform). We present a case of supraventricular tachycardia, an uncommon occurrence, presenting with recurrent syncope in a 42-year-old female with restrictive VSD.