What is the term for a narrowed heart valve?

The term for a narrowed heart valve is stenosis. Stenosis occurs when the valve does not open fully, which restricts blood flow from the heart chamber it serves. This narrowing can result in increased pressure within the heart and associated chambers, leading to various cardiovascular problems. Understanding stenosis is crucial because it can significantly impact blood circulation and overall heart function.

In comparison, regurgitation refers to a condition where the valve does not close properly, causing blood to flow backward. Incompetence, while similar to regurgitation, specifically describes a situation where the valve fails to seal tightly, leading to leakage. Ischemia is related to reduced blood flow to the heart muscle itself, usually due to blocked arteries, and does not directly pertain to valve function. Thus, stenosis distinctly identifies the condition of a narrowed heart valve.