When should a repeat transthoracic echocardiogram be scheduled for a patient with mild mitral regurgitation and mild aortic regurgitation who is otherwise stable and asymptomatic?

Repeat Echocardiography Every 2-3 Years for Mild Mitral and Aortic Regurgitation

For asymptomatic patients with mild mitral regurgitation and mild aortic regurgitation who have normal left ventricular size and function, repeat transthoracic echocardiography should be performed every 2 to 3 years. 1

Clinical Evaluation Schedule

Annual clinical assessment is sufficient, with instructions to alert you immediately if symptoms develop in the interim. Yearly echocardiography is not necessary unless clinical examination reveals evidence that regurgitation has worsened 1.

Key Clinical Findings That Trigger Earlier Imaging:

• New or worsening dyspnea, fatigue, or exercise intolerance
• Development of a louder murmur or new diastolic flow rumble
• Displacement of the LV apical impulse (suggests progression to severe regurgitation)
• Signs of pulmonary hypertension or heart failure
• New atrial fibrillation

Rationale for 2-3 Year Interval

The ACC/AHA guidelines specifically state that in asymptomatic patients with mild AR, little or no LV dilatation, and normal LV systolic function, routine echocardiography can be performed every 2 to 3 years 1. This recommendation applies equally to mild mitral regurgitation 1, 2.

The European guidelines align with this approach, recommending follow-up every 3-5 years for mild AR and every 3-5 years for mild MR when LV function is preserved 3, 2.

When to Shorten the Interval

Move to annual or 6-12 month echocardiography if:

• Moderate regurgitation develops (either valve) 1, 2
• Any LV enlargement appears (end-diastolic dimension increases)
• LVEF begins to decline (even if still >50%)
• Bicuspid aortic valve is present with any aortic root dilatation >4.0 cm 1, 4
• Clinical symptoms emerge at any point

Common Pitfalls to Avoid

1. Don't order yearly echos reflexively - This is unnecessary for mild disease with normal LV function and wastes resources 1

2. Don't ignore clinical changes - If the patient reports new symptoms or you detect worsening on exam, image immediately rather than waiting for the scheduled interval 1

3. Don't forget to assess both valves comprehensively - Combined valve disease can have additive effects on LV remodeling, though with mild disease this is rarely clinically significant 5

4. Ensure initial chronicity is established - If this is a new diagnosis and you're uncertain whether the lesions are chronic or potentially subacute, repeat imaging in 2-3 months initially to confirm stability before extending to the 2-3 year interval 1

Documentation for Patient

Instruct the patient to contact you immediately if they develop:

• Shortness of breath with exertion or at rest
• Unusual fatigue or decreased exercise tolerance
• Palpitations or irregular heartbeat
• Chest discomfort
• Ankle swelling