What is the significance of a known heart murmur?

• A. May indicate valvular disease or structural cardiovascular pathology.
• B. It always indicates benign condition.
• C. It has no clinical significance.
• D. It only indicates arrhythmias.

Answer: (A)

A known heart murmur signals possible abnormal blood flow due to valve disease or structural heart problems. Murmurs occur when blood moves turbulently across narrowed or leaky valves or through abnormal heart chambers, which can indicate conditions like aortic stenosis, mitral regurgitation, congenital defects, or cardiomyopathy. Because a murmur can point to meaningful disease, it deserves evaluation with history, careful auscultation to determine when and where it occurs, and often an echocardiogram to visualize valves and assess function. While some murmurs are innocent, a known murmur in an adult should not be assumed benign, since it can reflect underlying pathology.