Mitral Valve Prolapse

Symptoms | Treatments

What is

Symptoms

Causes and Risk Factors

Diagnosis

What is - Mitral Valve Prolapse

Mitral valve prolapse occurs when the mitral valve fails to close properly. A normal functioning heart has a mitral valve which closes completely during contraction of the left ventricle, thus preventing blood from flowing back into the left atrium.

However, for people with mitral valve prolapse, one or both of the mitral valve's flaps have extra tissue, which results in them bulging (also known as prolapsing) into the left atrium as the heart contracts.

This bulging may keep the valve from closing tightly, causing blood to leak backward into the left atrium, resulting in a condition called mitral valve regurgitation. This may not be an issue if the amount of blood which leaks backward is small.

Symptoms of Mitral Valve Prolapse

While mitral valve prolapse may be a life-long disorder for some, many patients never have symptoms.

Often signs and symptoms occur because blood is flowing backward from the valve. The symptoms for mitral valve prolapse vary, with most cases starting from mild to a gradual increase in symptoms:

A racing or irregular heartbeat (arrhythmia)
Chest pain which is not due to a heart attack or coronary artery disease
Shortness of breath or difficulty in breathing, even when lying flat or during physical activity
Dizziness
Fatigue