Aortic Regurgitation Follow-up
- Author: Stanley S Wang, MD, JD, MPH; Chief Editor: Richard A Lange, MD more...
Further Inpatient Care
Inpatient care is required for most patients with acute severe aortic regurgitation (AR), particularly with symptoms or evidence of hemodynamic decompensation. Patients with chronic severe AR may be followed as inpatients or outpatients, depending on the stage of their disease and severity of their symptoms and LV dysfunction.
Further Outpatient Care
Asymptomatic patients with chronic severe AR require ongoing clinical surveillance with periodic echocardiography because in many cases, significant LV dysfunction may arise even before the patient becomes symptomatic.
The recommended frequency of clinical evaluation is based on the stability of the left ventricular end-systolic dimensions (ESD) and end-diastolic dimensions (EDD) as listed below. After the initial study, clinical evaluation and repeat echocardiogram are recommended in 3 months. Subsequent follow-up is based on the results of the 2 evaluations.
- For patients with ESD < 45 mm or EDD < 60 mm and stable dimensions, clinical evaluation is recommended every 6-12 months and repeat echocardiography is recommended every 12 months.
- For patients with ESD < 45 mm or EDD < 60 mm and increasing dimensions, clinical evaluation and repeat echocardiography are recommended in 3 months.
- For patients with ESD 45-50 mm or EDD 60-70 mm and stable dimensions, clinical evaluation is recommended every 6 months and repeat echocardiography is recommended every 12 months.
- For patients with ESD 45-50 mm or EDD 60-70 mm and increasing dimensions, clinical evaluation and repeat echocardiography are recommended in 3 months.
- For patients with ESD 50-55 mm or EDD 70-75 mm and stable dimensions, clinical evaluation and repeat echocardiography are recommended every 6 months.
- For patients with ESD 50-55 mm or EDD 70-75 mm and increasing dimensions, clinical evaluation and repeat echocardiography are recommended in 3 months.
- For patients with ESD >55 mm or EDD >75 mm, surgery is recommended.
Inpatient & Outpatient Medications
Vasodilator therapy may be used on an inpatient or outpatient basis under the conditions listed above as recommended under current ACC/AHA guidelines. All patients with artificial heart valves should receive antibiotic prophylaxis prior to dental procedures. For antithrombotic therapy, all patients with artificial heart valves should receive daily aspirin, and many should also receive oral anticoagulation therapy with warfarin according to the ACC/AHA guidelines.[5]
Transfer
For patients who are hospitalized for severe AR in facilities without appropriate cardiovascular and surgical expertise, transfer may be justified to optimize clinical outcomes. For outpatients with stable but severe AR, longitudinal care by a cardiologist with appropriate expertise is recommended.
Deterrence/Prevention
Recommendations regarding exercise and antibiotic prophylaxis have been discussed above.
Complications
Left untreated, acute severe AR is likely to lead to considerable morbidity and mortality from either the underlying cause (typically infective endocarditis or aortic dissection) or from hemodynamic decompensation of the LV.
Potential complications in patients with chronic severe AR include progressive LV dysfunction and dilation, congestive heart failure, myocardial ischemia, arrhythmia, and sudden death. Additional complications may arise as a result of the patient's underlying condition (such as aortic root dissection in a patient with a bicuspid aortic valve and a severely dilated aortic root).
Prognosis
The prognosis for patients with severe AR depends on the presence or absence of LV dysfunction and symptoms, as follows:[5]
- In asymptomatic patients with normal EF
- Rate of progression to symptoms or LV dysfunction = < 6% per year
- Rate of progression to asymptomatic LV dysfunction = < 3.5% per year
- Rate of sudden death = less than 0.2% per year
- In asymptomatic patients with decreased EF, rate of progression to symptoms = >25% per year.
- In symptomatic patients, mortality rate = >10% per year.
Again, the strongest predictors of outcome are echocardiographic parameters (EF and LV end-systolic dimension), underscoring the crucial role of serial echocardiography in the management of patients with severe AR.
Patient Education
The current ACC/AHA guidelines for valvular heart disease, including for AR, are available to the public online for free.[5] Additionally, educational and support organizations exist for many of the underlying conditions, such as National Marfan Foundation and Bicuspid Aortic Foundation.
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