Wide fixed splitting of the second hea sound is typical of-: (A) Atrial septal defect, (B) Ventricular septal defect, (C) Patent ductus aeriosus, (D) Coarctation of aoa
Answer is A. Wide fixed split of S2 is seen in ASD. Wide split : VSD, MR, LV pacemaker, WPW, PS, RVF, RBBB. Reverse split : RV pacemaker, WPW, Eisen menkers, AS, LVF, LBBB, TR Ref: Harrison&;s 20th ed