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Novel and Innovative Hybrid Technique for Type A Aortic Dissection
Published on: March 28, 2025
[Is delayed surgical repair admitted for the thrombosed aortic dissection?]
Kazuhiro Myojin1, Y Ishibashi, K Ishii
1Division of Cardiovascular Surgery, Hokkaido Cancer Center, Sapporo, Japan.
Insights
Delayed surgical repair is a viable strategy for acute thrombosed aortic dissection, reducing unnecessary operations. This approach demonstrated comparable survival and event-free rates for both Type A and Type B dissections.
Area of Science:
- Cardiovascular Surgery
- Vascular Medicine
- Thoracic Surgery
Context:
- Thrombosed aortic dissection treatment remains controversial.
- Initial management strategies vary, impacting patient outcomes.
- Retrospective analysis of acute thrombosed aortic dissection cases.
Purpose:
- To evaluate the efficacy of delayed surgical repair versus initial medical management for acute thrombosed aortic dissection.
- To compare outcomes between medically and surgically treated patients.
- To identify predictors for delayed surgical intervention.
Summary:
- Ninety-six patients with acute thrombosed aortic dissection (35 Type A, 61 Type B) were initially treated medically.
- Delayed surgery was performed for uncontrollable cardiac tamponade, recanalization, large ulcer-like projections, or aortic enlargement.
- Both Type A and Type B dissections showed similar 1- and 5-year survival and event-free rates, regardless of initial treatment strategy.
- A lower false-to-true lumen ratio (F/T ratio) was observed in operated Type A cases (31% vs. 51%).
- Operated Type B cases presented with a larger initial aortic size compared to non-operated cases.
Impact:
- Conservative management for thrombosed aortic dissection can decrease unnecessary surgeries.
- The strategy of delayed surgical repair is justified, offering a safe and effective alternative.
- Provides evidence supporting a more selective surgical approach in managing thrombosed aortic dissections.
Abstract:
The initial treatment for the thrombosed aortic dissection is still controversial. Accordingly, we sought to evaluate the strategy of its surgical repair. Ninety-six (35 type A and 61 type B) acute thrombosed aortic dissection were studied retrospectively. Initially all of them were treated medically. The ratio of the false and the true lumen (F/T ratio) was calculated on the onset. The uncontrollable cardiac tamponade, recanalization, large ulcer-like projection (ULP) and enlargement of the dissected aorta had a delayed surgical repair during the follow-up period. Eighteen of the type A and 14 of the type B were surgically treated and showed good result. The 1- and 5-year survival rates and the event-free survival rates for the type A and the type B were almost equal with no statistical difference. The mean F/T ratio for the type A was 31% for the operative and 51% of the nonoperative cases (p = 0.007). The maximum size of the initial aorta of the operative cases was larger than that in the nonoperative for the type B. The conservative therapy for the thrombosed aortic dissection decreased the number of the unnecessary operation and the strategy of the delayed surgical repair was justified properly.
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