49
Table 22. Congenital Diseases of the Aortic Valve: Imaging
Testing Intervals for Asymptomatic Patients With
Normal LV Function
Frequency of Echocardiography
Progressive
(Stage B)
Aortic stenosis
• Every 3–5 years (mild severity, V
max
2.0–2.9 m/s or mean ΔP <20
mm Hg )
• Every 1–2 years (moderate severity, V
max
3.0–3.9 m/s or mean ΔP
20–39 mm Hg )
Aortic regurgitation
• Every 3–5 years (mild severity)
• Every 1–2 years (moderate severity)
Severe (Stage C) Aortic stenosis
• Every 6–12 months (V
max
≥4.0 m/s or mean ΔP ≥40 mm Hg )
Aortic regurgitation
• Every 6–12 months
• Dilating left ventricle: more frequently
Aortic dilation
>4 cm at the
level of the
sinuses, the
ascending aorta,
or both
Periodic echocardiogram, CMR, or CT at intervals determined by:
• Degree and rate of progression of aortic dilatation
• Family history of aortic dissection
• History of coarctation
Modified with permission from Otto et al. Copyright © 2020 American Heart Association, Inc.
and American College of Cardiolog y Foundation.
CMR indicates cardiovascular magnetic resonance; CT, computed tomography; LV, le
ventricular; V
max
, maximum velocity; and ΔP, peak pressure gradient.
