Imaging Surveillance After Proximal Aortic Operations: Is it Necessary?

Area of Science:

• Cardiovascular Surgery
• Aortic Surgery
• Medical Imaging

Background:

• Current guidelines for imaging surveillance after proximal aortic repair lack evidence-based support.
• Proximal aortic operations include ascending aorta, aortic root, and aortic arch procedures.

Purpose of the Study:

• To characterize the incidence and causes of reintervention after proximal aortic operations.
• To provide data for guiding postoperative surveillance frequency and duration.

Main Methods:

• Prospective data collection of 869 patients undergoing proximal aortic operations over 9 years.
• Identification of patients requiring reintervention and determination of causes.
• Competing-risk Cox regression analysis to model reintervention risk.

Main Results:

• Reinterventions occurred in 4.3% of patients, with 48.6% in the proximal aorta and 51.4% in the distal aorta.
• Median time to reintervention was 2.8 years; 9-year freedom from reintervention was 92.9%.
• Index type A dissection was a significant predictor of reintervention (HR, 2.01; P = 0.038). Stentless porcine roots were associated with root aneurysms.

Conclusions:

• Reinterventions after proximal aortic operations are infrequent, with most occurring within 3 years.
• Patients with type A dissection or stentless porcine roots warrant aggressive surveillance.
• A tailored surveillance strategy can optimize resource utilization and reduce patient burden.