What is the characteristic sound produced by pulmonic stenosis?

Pulmonic stenosis is characterized by a specific type of heart sound due to the narrowing of the outflow tract from the right ventricle to the pulmonary artery. The correct choice refers to the early systolic opening click, which may be heard as the pulmonary valve attempts to open against the narrowed passage. This click is followed by a systolic ejection murmur, which is caused by turbulent blood flow as the right ventricle ejects blood through the stenotic valve during systole.

The early opening click occurs shortly after the first heart sound (S1) when the ventricle contracts, and this can be a significant finding on auscultation. The systolic ejection murmur occurs as a consequence of the high-velocity flow across the stenotic valve, and it typically has a crescendo-decrescendo pattern that peaks mid-systole.

In contrast, a mid-systolic click is associated with mitral valve prolapse, while a pansystolic murmur is more indicative of conditions like mitral or tricuspid regurgitation, where blood flow is abnormal throughout the entirety of systole. A musical sound is not specific to any cardiac condition but is often associated with various types of benign or pathologic murm