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Radiological evaluation of the ascending aorta following repair of type A dissection
J Slavotinek1, S W Kendall, C D Flower
1Department of Radiology (219), Addenbrooke's Hospital, Cambridge, UK.
Insights
Persistent chronic dissection proximal to aortic grafts is a rare complication after type A dissection repair. While distal dissections are common, proximal ones, though infrequent, warrant attention in post-surgical imaging surveillance.
Area of Science:
- Cardiovascular Surgery
- Diagnostic Imaging
- Thoracic Aortic Disease
Background:
- Type A aortic dissection repair often involves aortic interposition grafts.
- Post-operative surveillance is crucial for identifying complications.
- Chronic dissection proximal to the graft is an uncommon sequela.
Observation:
- A review of 14 patients post-aortic interposition graft for type A dissection was conducted.
- Computed tomographic (CT) findings were analyzed 5-47 months after surgery.
- One patient presented with persistent chronic dissection proximal to the graft.
Findings:
- No additional cases of proximal chronic dissection were identified.
- Aortic root dilatation proximal to the graft occurred in 57% of patients.
- Persistent distal dissection was observed in 79% of patients, consistent with prior reports.
Implications:
- Chronic dissection proximal to aortic grafts is a rare but significant complication.
- Routine post-operative CT imaging should assess for proximal aortic changes.
- Further research is needed to understand the natural history and management of this complication.
Abstract:
A patient with persistent chronic dissection proximal to an aortic interposition graft for repair of a type A dissection prompted us to review the computed tomographic (CT) findings in 14 other such patients 5-47 months after surgery. No other case of proximal aortic dissection was identified although dilatation of the aortic root proximal to the graft was present in 8 patients (57%). Persistent dissection distal to the graft in 11 patients (79%) was in keeping with that reported by other workers. Chronic dissection proximal to the surgical repair of a dissection seems a rare although important complication.