<prompt> Wide fixed splitting of the second hea sound is typical of-Atrial septal defectVentricular septal defectPatent ductus aeriosusCoarctation of aoa  <response>: 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 