What is valvular insufficiency?

What is valvular insufficiency?

• A. When valves leak because cusps do not close tightly, leading to blood regurgitation
• B. When valve cusps scar and cannot open fully
• C. When valve cusps become inflamed
• D. A genetic defect of valve tissue

Answer: (A)

Valvular insufficiency happens when a valve doesn’t close properly, so blood leaks backward through the valve when it should be shut. This imperfect closure, where the valve cusps don’t meet tightly enough, allows regurgitation and reduces the forward flow the heart is trying to achieve. Over time, that backward flow can cause volume overload in the chamber behind the valve and may lead to symptoms of heart failure if severe. This is different from stenosis, which is a problem with opening the valve fully and obstructs forward flow rather than causing backward leakage. Inflammation of the valve cusps describes valvitis, a separate process, and a genetic defect of valve tissue is a potential underlying factor but does not define the mechanism of insufficiency itself.

Valvular insufficiency happens when a valve doesn’t close properly, so blood leaks backward through the valve when it should be shut. This imperfect closure, where the valve cusps don’t meet tightly enough, allows regurgitation and reduces the forward flow the heart is trying to achieve. Over time, that backward flow can cause volume overload in the chamber behind the valve and may lead to symptoms of heart failure if severe.

This is different from stenosis, which is a problem with opening the valve fully and obstructs forward flow rather than causing backward leakage. Inflammation of the valve cusps describes valvitis, a separate process, and a genetic defect of valve tissue is a potential underlying factor but does not define the mechanism of insufficiency itself.