What is the cause of dicrotic notch?: (A) Passive filling of blood in ventricles, (B) Rapid ejection phase, (C) Peripheral resistance, (D) Isovolumic contraction
Answer is C. Dicrotic notch is seen in pulse tracing after closing of aoic valve. The peripheral resistance generates an abberation in tracing while the aoic valves are closing-->causing Dicrotic pulse.