In septum primum type of ASD overburden occurs in which chamber?: (A) RA + RV, (B) LA + LV, (C) RA + LA, (D) LA
Answer is A. - In ASD (ostium primum as well as secundum) overload of Right atrium and right ventricle occurs due to left to right shunting of blood. - Left atrium & Left ventricle enlargement - VSD, PDA - Left atrium enlargement - Mitral stenosis