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The conduction system in hypoplasia of the aortic tract complex
- Source :
- Circulation. 59(6)
- Publication Year :
- 1979
-
Abstract
- This is a study of the course of the conduction system in two cases of hypoplasia of the aortic tract complex, one with mitral stenosis and the other with mitral atresia. In both there was a posterior atrioventricular (AV) node which formed the AV bundle. In case 1 the bundle was short and bifurcated early. The branching bundle gave off a large left bundle branch (LBB), many Mahaim fibers to the septum and a small right bundle branch (RBB). In case 2 the AV node was divided into two parts which formed two posterior bundles which joined together to form a short branching bundle. Instead of a LBB there were profuse Mahaim fibers passing from the branching bundle to the depths of the ventricular septum. The RBB was large. The abnormalities seen in the conduction system particularly in the LBB are discussed from the embryologic stand-point.
- Subjects :
- Male
Bundle of His
business.industry
Infant, Newborn
Anatomy
medicine.disease
Hypoplasia
Stenosis
Heart Conduction System
Physiology (medical)
Bundle
Left bundle branch
medicine
Atrioventricular Node
Humans
Electrical conduction system of the heart
Cardiology and Cardiovascular Medicine
Mahaim fiber
business
Right bundle branch
Aorta
Mitral atresia
Sinoatrial Node
Subjects
Details
- ISSN :
- 00097322
- Volume :
- 59
- Issue :
- 6
- Database :
- OpenAIRE
- Journal :
- Circulation
- Accession number :
- edsair.doi.dedup.....b11e1d902b8a62e52bfcc98eb629d1ca