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. Author manuscript; available in PMC: 2023 Dec 13.
Published in final edited form as: J Am Coll Cardiol. 2022 Nov 2;80(24):e223–e393. doi: 10.1016/j.jacc.2022.08.004

Recommendations for Surveillance of Abdominal Aortic Dilation and Aneurysm

Referenced studies that support the recommendations are summarized in the Online Data Supplement.

COR LOE RECOMMENDATIONS
1 B-NR 1. In patients with an AAA of 3.0 cm to 3.9 cm, surveillance ultrasound is recommended every 3 years to assess for interval change.1–8
1 B-NR 2. In men with an AAA of 4.0 cm to 4.9 cm and in women with an AAA of 4.0 cm to 4.4 cm, surveillance ultrasound is recommended annually to assess for interval change.1–8
1 B-NR 3. In men with an AAA of ≥5.0 cm and women with an AAA of ≥4.5 cm, surveillance ultrasound is recommended every 6 months to assess for interval change.1–8
1 C-EO 4. In patients with an AAA that is inadequately defined with ultrasound, surveillance CT is recommended.
2a C-LD  In such patients, when there is a contraindication to CT or to lower cumulative radiation risk, surveillance MRI is reasonable.9,10
1 C-EO 5. In patients with an AAA that meets criteria for repair, CT is recommended for preoperative planning.