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The Journal of Cardiovascular Surgery 2021 Nov 18

DOI: 10.23736/S0021-9509.21.11800-2

Copyright © 2021 EDIZIONI MINERVA MEDICA

lingua: Inglese

False lumen thrombosis after frozen elephant trunk procedure in acute and chronic aortic dissection

Boris N. KOZLOV, Dmitri S. PANFILOV

Cardiovascular department, Cardiology Research Institute, Tomsk National Research Medical Center, Russian Academy of Sciences, Tomsk, Russian Federation


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BACKGROUND: The clinical significance of the false lumen (FL) thrombosis after the thoracic aortic surgery consists in the correlation with aortic remodeling. The aim of the study was to analyze the incidence of the FL thrombosis of the thoracoabdominal aorta after the frozen elephant trunk (FET) procedure in acute and chronic aortic dissection.
METHODS: A total of 57 consecutive patients with type A and B aortic dissection (AD) underwent the FET procedure between March 2012 and December 2020 were included in a retrospective study. All of the patients were divided in two groups: acute (n=18) and chronic (n=39) AD. Early and 2-year outcomes were evaluated in both groups. Computed tomography scans were obtained along the entire aorta for the aortic status assessment.
RESULTS: There were no statistically significant differences in early mortality and postoperative outcomes in both groups. The 2-year survival rate in acute and chronic AD was 74.7%±10% vs. 71.4%±7% (p=0.573), respectively. In the follow-up, the FL thrombosis rate, changes of the true lumen and total aortic diameters did not differ significantly between the analyzed groups of patients. The freedom from negative aortic remodeling was 62.2%±26% in acute AD versus 76.2%±11% in chronic AD (p=0.853). One (5.6%) and 4 (10.3%) distal aortic re-interventions were performed in acute and chronic AD, respectively.
CONCLUSIONS: False lumen thrombosis rate after the FET procedure did not differ significantly in acute and chronic AD.


KEY WORDS: Aortic dissection; Frozen elephant trunk; False lumen thrombosis; Aortic remodeling

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