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Aortic Calcification Severity Predicts Unfavorable Anatomy and Adverse Outcomes in Type B Aortic Dissection
Long Cao1,2, Zelin Niu1, Longteng Ma3
1Department of Vascular and Endovascular Surgery, The First Medical Centre, Chinese PLA General Hospital, Beijing, China.
Summary
Aortic calcification severity, especially in the thoracic aorta, is linked to unfavorable anatomy in type B aortic dissection (TBAD). Increased calcification volume predicts higher risks of adverse events and aortic expansion after thoracic endovascular aortic repair (TEVAR).
Area of Science:
- Cardiovascular Imaging and Intervention
- Aortic Disease Research
- Biomarker Discovery in Cardiovascular Medicine
Background:
- Aortic calcification (AC) is a known cardiovascular disease marker, but its specific role in acute aortic syndromes like type B aortic dissection (TBAD) remains unclear.
- Understanding AC distribution and its prognostic implications in TBAD is crucial for patient management.
Purpose of the Study:
- To characterize AC distribution in TBAD patients.
- To examine the association between AC volume and initial aortic anatomy in TBAD.
- To assess the prognostic value of AC volume for outcomes after thoracic endovascular aortic repair (TEVAR).
Main Methods:
- Retrospective analysis of 270 patients (150 from a single center, 120 from a clinical trial) with TBAD.
- Cross-sectional evaluation of preoperative AC volume in different aortic segments and its correlation with initial TBAD anatomy.
- Survival analysis and multivariable Cox regression to assess the 1-year prognostic value of AC volume post-TEVAR.
Main Results:
- AC volume correlated with unfavorable preoperative TBAD anatomy, including increased aortic size and tortuosity.
- Thoracic aorta AC volume was a significant predictor of composite events post-TEVAR (HR 2.396), thoracic aorta expansion (HR 6.266), and abdominal aorta expansion (HR 2.569).
Conclusions:
- Aortic calcification severity, particularly in the thoracic aorta, is associated with unfavorable anatomical features in TBAD.
- AC volume independently predicts the risk of subsequent aortic expansion and adverse events following TEVAR.
- AC volume serves as a potential imaging biomarker for risk stratification in TBAD patients undergoing TEVAR.
Keywords:
aortic calcificationcomputed tomographyprognostic valuethoracic endovascular aortic repairtype B aortic dissectionMore Related Videos
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