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Congenitally corrected transposition with normally positioned atria, straddling mitral valve, and isolated posterior
H Kurosawa1, Y Imai, A E Becker
1Department of Pediatric Cardiovascular Surgery, Tokyo Women's Medical College, Japan.
Insights
Congenital heart defect analysis revealed an atypical atrioventricular node position in a corrected transposition of the great arteries case. This finding emphasizes the need for careful septal alignment assessment during cardiac surgery.
Area of Science:
- Cardiology
- Congenital Heart Disease
- Cardiac Anatomy
Background:
- Congenital corrected transposition of the great arteries (ccTGA) presents complex cardiac anatomy.
- Understanding variations in the conduction system is crucial for surgical planning in ccTGA.
- The atrioventricular node (AVN) typically lies anteriorly in ccTGA, but variations exist.
Abstract:
A heart is described with congenitally corrected transposition of the great arteries, normally positioned atria, and a straddling mitral valve. Instead of an anteriorly positioned atrioventricular node, a regularly positioned posterior node and bundle were observed. This observation has important clinical and surgical implications and underlines that close inspection of the alignment of atrial and ventricular septa during operations is mandatory.