Which of the following represents the additional component in pentology of Fallot?: (A) Atrial Septal Defect (ASD), (B) Ventricular Septal Defect (VSD), (C) Right ventricular Hyperophy (RVH), (D) Pulmonic Stenosis
Answer is A. Pentology of fallot is a rare anomaly which consist of all structural anomalies of tetralogy of fallot together with an ostium secondum ASD. Ref: Essential pediatrics by O.P.Ghai 6th edn/page 406; An Introduction to Electro Cardiography, 7th Edition By Leoschamroth page267.