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Association between the ascending aortic length and sporadic type A aortic dissection
Dan Rong1, Shaofan Wang1,2, Feng Liu1
1Department of Vascular and Endovascular Surgery, Chinese PLA General Hospital, Beijing, China.
Frontiers in Cardiovascular Medicine
|February 20, 2026
Summary
Ascending aortic length is associated with type A aortic dissection (TAAD) in a Chinese population. Longer ascending aortic length may help assess TAAD risk, complementing diameter measurements.
Area of Science:
- Cardiovascular Research
- Medical Imaging
- Aortic Diseases
Background:
- Type A aortic dissection (TAAD) is a life-threatening condition.
- Accurate risk assessment for TAAD is crucial for timely intervention.
- Understanding aortic dimensions, particularly length, may improve TAAD risk stratification.
Purpose of the Study:
- To determine the aortic dimensions in Chinese patients with TAAD.
- To investigate the association between ascending aortic length (AAL) and sporadic, non-syndromic TAAD in a Chinese population.
Main Methods:
- Cross-sectional study of 146 TAAD patients and 146 controls (January 2016-December 2020).
- Aortic dimensions measured using the centerline method.
- Multivariate logistic regression and ROC analysis to assess AAL association with TAAD.
Main Results:
- Median AAL was significantly longer in TAAD patients (110.0 mm) compared to controls (89.0 mm).
- AAL remained independently associated with TAAD (OR, 5.34).
- Optimal cutoff AAL for TAAD risk was identified as 9.8 cm.
Conclusions:
- Ascending aortic length is associated with TAAD in this Chinese cohort.
- AAL may complement aortic diameter in TAAD risk assessment.
- Further prospective studies are needed to establish clinical thresholds.
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