Management of Mitral Valve Sclerosis with Mild Mitral Regurgitation

Initial Assessment and Monitoring

The European Society of Cardiology recommends clinical monitoring without specific intervention as the initial management approach for patients with mitral valve sclerosis and mild mitral regurgitation, with regular echocardiographic follow-up to assess for progression of disease 1
Patients with mild mitral regurgitation and mitral valve sclerosis should undergo comprehensive echocardiographic evaluation to establish baseline valve morphology, regurgitation severity, left ventricular function, and pulmonary artery pressure 2
Transthoracic echocardiography usually provides sufficient information for routine management of these patients 3
Regular surveillance with clinical and echocardiographic follow-up is recommended every 2-3 years for asymptomatic patients with mild MR 1
Exercise testing may be useful in patients with discordance between symptoms and resting hemodynamics to assess exercise capacity and hemodynamic response 4

The American Heart Association recommends no specific medical therapy for asymptomatic patients with mild MR and normal left ventricular function 2
For patients who develop symptoms of congestion, diuretics may be used for symptom relief 1
Anticoagulation is generally not indicated for patients with mild MR in sinus rhythm unless there are other risk factors such as atrial fibrillation, history of thromboembolism, or significantly enlarged left atrium 5

Regular clinical and echocardiographic follow-up is essential to monitor for development of symptoms, progression of MR severity, left ventricular enlargement or dysfunction, development of pulmonary hypertension, and new onset atrial fibrillation 6
Left ventricular enlargement or dysfunction should be monitored 7
Development of pulmonary hypertension should be monitored 3
New onset atrial fibrillation should be monitored 1

Intervention is generally not indicated for mild MR unless there is evidence of development of symptoms attributable to valve disease 3
Progression to moderate-severe MR should be considered for intervention 3
Left ventricular dysfunction or enlargement should be considered for intervention 8
Pulmonary hypertension should be considered for intervention 3
New-onset atrial fibrillation should be considered for intervention 1

Patients should be educated about symptoms that warrant medical attention, such as increasing shortness of breath, decreased exercise tolerance, and palpitations 6
Endocarditis prophylaxis is not routinely recommended for patients with mild MR unless they have a history of endocarditis or prosthetic valve 2

Underestimation of MR severity can occur with suboptimal echocardiographic imaging; comprehensive assessment using multiple parameters is recommended 7
Symptoms may develop gradually and patients may unconsciously reduce their activity levels to avoid symptoms; specific questioning about exercise capacity is important 6
Exercise echocardiography may unmask significant hemodynamic abnormalities not apparent at rest in some patients 4
Patients with mitral valve sclerosis may have concomitant coronary artery disease that can contribute to symptoms and should be evaluated appropriately 2