All of the following hea sounds occur sholy aftei S2except-: (A) Opening snap, (B) Pericardial knock, (C) Ejection click, (D) Tumor plop
Answer is C. Ejection click occurs due to semilunar valve opening with high pressure. Eg: AS, PS. It is high pitched. Opening snap : 80ms after S2 Pericardial knock : 100 ms after S2 Ref: Harrison 20th edition 1445