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Morphology of the ascending aorta: a study on 114 Chinese patients

Lei Liu1, Wei Wang2, Qingsheng Lu1

  • 1Department of Vascular Surgery, Changhai Hospital, Second Military Medical University, CPLA, 168 Changhai Road, Shanghai 200433, China.

Journal of Interventional Medicine
|November 22, 2021
PubMed

Insights

Ascending aortic dissection alters aorta curvature, making it straighter and steeper. Dissection entry points near valves and involvement of branch arteries significantly impact dissection extent.

Area of Science:

  • Cardiovascular Surgery
  • Medical Imaging
  • Anatomical Pathology

Background:

  • Ascending aortic dissection is a life-threatening condition requiring detailed morphological understanding.
  • Previous studies have not fully elucidated the specific geometric and positional characteristics of ascending aortic dissections.

Observation:

  • A novel assessment method was employed to analyze the morphology of 114 patients with ascending aortic dissection.
  • Significant differences in aortic curvature were observed, with dissected aortas being straighter and steeper.

Findings:

  • Dissection entry points near the aortic sinus, particularly at the 10 and 1-2 o'clock positions, were common, often fusiform in shape.
  • Dissections involving branch arteries extended further distally compared to those that did not.
  • A straighter and steeper ascending aorta (R: 59.70 ± 10.27 mm) was associated with dissection compared to controls (R: 47.46 ± 6.40 mm).

Implications:

  • Understanding these morphological features can aid in surgical planning and risk stratification for ascending aortic dissection.
  • The study highlights key anatomical correlations that may influence the progression and management of the disease.
  • Further research into the biomechanics of dissected aortas could refine treatment strategies.

Keywords:
ascending aortacomputed tomographydissectionintimal tearmorphology

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