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Surgically relevant structure on the ascending aorta.

J J Morrison¹, M Codispoti, C Campanella

¹Department of Cardio-Thoracic Surgery, The Royal Infirmary of Edinburgh, Lauriston Place, Edinburgh, United Kingdom.

Clinical Anatomy (New York, N.Y.)

|April 4, 2003

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A consistent transverse vascularized ridge on the aorta, composed of adipose tissue, was identified in cardiac surgery patients and fresh cadavers. This aortic ridge may cause post-operative hemorrhage, potentially requiring re-sternotomy.

Area of Science:

Anatomy
Vascular Biology
Surgical Pathology

Background:

A transverse vascularized ridge on the anterior surface of the intra-pericardial aorta is occasionally observed during cardiac surgery.
The anatomical and histological characteristics of this structure are not well-documented.

Purpose of the Study:

To investigate the prevalence, histological composition, and potential clinical significance of the transverse vascularized aortic ridge.

Main Methods:

Examination of the intra-pericardial aorta in 20 cardiac surgery patients and 11 fresh cadavers.
Histological analysis of the aortic ridge tissue.
Comparison with embalmed cadavers to assess the effect of preservation methods.

Main Results:

Related Experiment Videos

The transverse vascularized aortic ridge was consistently present in non-embalmed subjects (patients and fresh cadavers).
Histology revealed the ridge to be well-vascularized, innervated adipose tissue.
The structure was absent in embalmed cadavers, suggesting degradation by the embalming process.

Conclusions:

The transverse vascularized aortic ridge is a distinct anatomical feature with potential surgical relevance.
Its vascular and nervous components suggest it could be a source of post-operative hemorrhage, sometimes necessitating re-sternotomy.