what are the Recommendations for Timing of Intervention for Chronic AR
Referenced studies that support the recommendations are
summarized in Online Data Supplement 15 to 17.?
In asymptomatic patients with severe AR and normal LV systolic function at rest (LVEF >55%; Stage C1) and low surgical risk, aortic valve surgery may be considered when there is a progressive decline in LVEF on at least 3 serial studies to the low?normal range (LVEF 55% to 60%) or a progressive increase in LV dilation into the severe range (LV end- diastolic dimension [LVEDD] >65 mm).