The nurse working on the cardiac unit notes that the client has an S₂ murmur,which the nurse understands is caused by: A) Pulmonic or aortic valve backflow or regurgitation B) Mitral valve backflow or regurgitation C) Tricuspid valve backflow or regurgitation D) Poor coronary arterial circulation

Question

Quizplus · Accepted Answer

Closure of aortic and pulmonic valves represents S₂,or the second heart sound.Some clients with valvular disease have backflow or regurgitation of blood through the incompetent valve,causing a murmur that you can hear on auscultation.During ventricular diastole the atrioventricular (mitral and tricuspid)valves open and blood flows from the higher-pressure atria into the relaxed ventricles.This represents S₁,or the first heart sound.A murmur is caused by blood turbulence,not coronary artery disease

The Nurse Working on the Cardiac Unit Notes That the Client