Complication of Mitral stenosis include:
1. Arrhythmia: The most common is atrial arrhythmia, early occur atrial premature beats, then the atrial tachycardia, atrial flutter, paroxysmal atrial fibrillation and even the persistent atrial fibrillation. Increased left atrial pressure lead to the expansion of the left atrium and rheumatic inflammation result in the left atrial wall fibrosis which is the pathological basis of durative auricular fibrillation. Reduced cardiac output with atrial fibrillation can induce or exacerbated heart failure. After the emergence of atrial fibrillation, rumbling diastolic apical area of the systolic murmur may disappear before the enhancement, rapid atrial fibrillation, when the rumbling apical diastolic murmur District reduce or disappear, heart rate slowed down significantly or when.
2. Congestive heart failure and acute pulmonary edema: 50% ~ 75% of patients with congestive heart failure, mitral stenosis is the leading cause of death. Respiratory tract infections are common factors of heart failure in women with pregnancy and childbirth in the usually-induced heart failure. Acute pulmonary edema is severe mitral stenosis severe acute complications occurred in more intense physical activity, emotional excitement, infection, sudden tachycardia or rapid atrial fibrillation, in pregnancy and childbirth more easily induced. These circumstances to speed up the ventricular rate, left ventricular diastolic filling time; pulmonary circulation to increase blood volume; left atrial pressure was significantly increased, resulting in increased pulmonary capillary pressure, plasma exudation to the organization or the alveolar space, which lead to acute pulmonary edema.
3. Embolization: The most common cerebral embolism may also occur in the limbs, intestine, kidney and spleen and other organs, emboli come from the expansion of the left atrial appendage were associated with atrial fibrillation. The source of the right atrial emboli can cause pulmonary embolism or pulmonary infarction.
4. Lung infection: the patients often increased pulmonary venous pressure and pulmonary congestion, pulmonary infection easily. Absence of pulmonary infection appears often aggravated or induced heart failure.
5. Sub-acute infective endocarditis: rare complication of Mitral stenosis.