Narrowing of the mitral valve is called

• A. Mitral Stenosis
• B. Murmurs
• C. Aortic Stenosis
• D. Thrombophlebitis

Answer: (A)

Mitral stenosis. Here, the key idea is that “stenosis” means narrowing, and it’s applying to the mitral valve, which sits between the left atrium and left ventricle. When the valve narrows, blood flow from the atrium into the ventricle is restricted, leading to higher pressure in the left atrium and potential downstream effects like congestion in the lungs. The other terms aren’t correct: murmurs are abnormal sounds heard with a stethoscope, not a disease; aortic stenosis is narrowing of the aortic valve (not the mitral valve); thrombophlebitis is inflammation of a vein with a clot, unrelated to the heart valves.