<prompt> A patient presents with LVH and pulmonary complications. ECG, shows left axis detion. Most likely diagnosis is:TOFTricuspid atresiaTAPVCVSD  <response>: Congenital absence of tricuspid valve is tricuspid atresia. Right ventricle is hypoplastic. Systemic venous blood from Rt Atrium - ASDpatent foramen ovale - Lt atrium - Lt ventricle - Aoa and through muscular VSD blood also enters Rt ventricle and pulmonary aery. Ref: Kliegman, Behrman, Jenson, Stanton 2008, Chapter 430.4, Tricuspid Atresia, In the book, NELSON TEXTBOOK OF PEDIATRICS, Volume 2, 18th Edition, New Delhi, Pages 1913-14 ; O P Ghai Essential Peadiatrics, 6th Edition, Page 410 