Valvular heart disease (VHD) is another common type of heat/cardiovascular disease. A complication characterized by the damage or defect of one of the four heart valves: the mitral, aortic, tricuspid or pulmonary. The four heart valves are crucial to blood circulation and may lead to death if damaged. The mitral and tricuspid valves control the flow of blood between the atria and the ventricles. The pulmonary valve controls the flow of blood from the heart to the lungs, and the aortic valve governs blood flow between the heart and the aorta, and thereby the blood vessels to the rest of the body. The mitral and aortic valves are the ones most frequently affected by valvular heart disease.
