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Changes in aortic arch geometry and the risk for Stanford B dissection
Peng Qiu1, Junchao Liu1, Yuqian Chen2
1Department of Vascular Surgery, Shanghai Ninth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China.
Journal of Thoracic Disease
|January 15, 2021
Summary
Type B aortic dissection (TBAD) is linked to specific aortic arch dimensions. Patients with TBAD had longer aortic arch lengths and greater arch width and height compared to healthy individuals.
Area of Science:
- Cardiovascular Research
- Medical Imaging
- Aortic Diseases
Background:
- Aortic diameter alone is insufficient for identifying patients at risk for Type B aortic dissection (TBAD).
- Morphological factors beyond diameter may be crucial for risk stratification in TBAD.
- Investigating these factors can improve patient identification and management.
Purpose of the Study:
- To identify specific morphological factors associated with the occurrence of Type B aortic dissection (TBAD).
- To explore geometric characteristics of the aorta that may predict TBAD risk.
Main Methods:
- Retrospective, multicenter, cross-sectional study design.
- Inclusion of 94 patients with TBAD and 534 healthy controls.
- Utilized 3D morphometric data of the thoracic aorta and propensity score matching (PSM) for analysis.
Main Results:
- Post-PSM, 75 TBAD patients were analyzed.
- Significantly longer aortic arch length in TBAD patients (28.00±7.42 cm vs. 25.14±7.11 cm).
- Increased aortic arch width (80.04±17.27 mm vs. 71.73±15.55 mm) and height (24.92±11.39 mm vs. 19.37±10.10 mm) in TBAD patients.
Conclusions:
- Type B aortic dissection (TBAD) is associated with specific aortic arch geometry.
- Longer aortic arch length is a key morphological factor linked to TBAD.
- Enlarged aortic arch width and height are also significant indicators of TBAD risk.
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