Human heart divided into 4 chambers, right atrium and right ventricular and left atrium and left ventricular. These chambers has 4 valves, one is the tricuspid valve that opens in the right ventricle from right atrium, the pulmonic valve opens in the pulmonary artery from right ventricle, the mitral valve opens in the left ventricle from left atrium and the forth one the aortic valve that opens in the aorta from left ventricle. Normally heart's valves keep track on blood flow so that blood flows only in one forward direction. The condition in which these four valves perform abnormal function is known as Valvular Heart Disease.

According the dysfunction of valves, four types of Valvular Heart Diseases can be possible.

Valvular stenosis: Valvular stenosis is one type of Valvular Heart Disease. It happen due to narrowing and blockage in any valve of heart so that blood can't find smooth passage for flow and valves have pressure of blood. In absence of insufficient blood supply patient feels weakness and tired.

Valvular regurgitation: Some times the valves are unable to close completely. Such condition is known as Valvular regurgitation. In Valvular regurgitation blood flows in opposite direction so that Shortness of breath, swelling of the feet etc comes as a result. Heart failure may be possible in severe cases.

Atresia: Atresia is that Valvular Heart Disease in which one of the valve is not properly developed and is found to be completely closed at the birth time. Atresia can be possible in any of four valves.

Mitral valve prolapse: This Valvular Heart Disease may be happened due to dysfunction of Mitral valve that connects the left atrium to the left ventricle. When mitral valve have problem in closing then blood flows in backward direction and comes into left atrium. Headache, Chest pain, Anxiety etc are common symptoms of this disease.

By proper medication, maintaining a regular heartbeat, treatment of Valvular Heart Disease can be possible otherwise replacement and repair of any defective valve by open heart surgery is the final option