ED Associated With Valvular Heart Disease
Diseases caused due to the infection, damage or improper functioning of the valves of the heart is called valvular heart disease. Heart is composed of four chambers, two atria and two ventricles and it contains four valves which acts the gate of the chambers. They are called as mitral valve and aortic valve on the left and tricuspid and pulmonary valves on the right. These valves prevent the backward flow of blood within the systemic and pulmonary circulations. Many diseases affect the valve causing valve stenosis that is narrowing of the valves, or regurgitation which is the leakage of bleed in the wrong direction. Infections which are acute or subacute most commonly due to bacterial endocarditis can destroy the heart valves and it is called as connective tissue diseases.
Treatment of ED associated with valvular heart disease with Viagra has been effective; however, you need to use the right kind of dosages.
Aortic stenosis is the most common form of valvular heart disease. Aortic stenosis has a disease process similar to the atherosclerosis which involves lipid infiltration and inflammation. Bicuspid valves mostly undergo stenosis more quickly. In this cases the valves becomes thick but it do not disturb the blood flow and this is considered to be the early stage of the disease. Patients are usually asymptomatic for long periods. Later there may be symptoms of chest pain and shortness of breath due to exertion caused. There may a harsh ejection systolic murmur which can be heard during the examination.
The pulse pressure between the systolic and diastolic pressure may be narrowed, sudden death may occur in some cases. Calcium from the valve may affect the underlying connective tissues which cause ventricular arrhythmias and heavily stenosed valves can cause hemolytic anemia. Aortic regurgitation may occur as a result of valve abnormalities or due to the disease of the aorta and the surrounding tissues which supports the aortic valve. The valve leaflets or cuspids may become regurgitant in stenosed bicuspid aortic valve.
This is followed by destruction by endocarditis or as a result of autoimmune connective tissue disorders. Acute aortic regurgitation can occur when a tear in the aorta disrupts the supporting structures of the aortic valve. This is known as aortic dissection. The blood flow backward in to the left ventricles and places it under the strain and causes hypertensive. Regurgitation reduces coronary artery blood flow and in the presence of atherosclerosis, this lead to ischemic and angina. Ultimately, the functioning of left ventricles may be impaired causing the symptoms of heart failure.
Mitral regurgitation is the second most common form of valvular heart disease. This affects the valve leaflets, the valve annulus or the valve apparatus. The valve leaflets are affected due to rheumatic heart disease but bacterial endocarditis and connective tissue disorders are also common causes. When there is defect in the valve annulus, the valve leaflets appear normal but cannot close properly, because a stretched left ventricle pulls the valve supporting apparatus apart. This can cause any disease of left ventricles such as ischemic heart disease or a cardiomyopathy. It follows an acute myocardial infarction or long standing anemia which weakens the ventricles.
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