Related Experiment Video
Updated: Aug 19, 2026

Echocardiographic Evaluation of Atrial Communications before Transcatheter Closure
Published on: February 8, 2022
Atrioventricular septal defect associated with type A postaxial polydactyly
Solly E Levin1, Kathy Vanderdonck
1Division of Paediatric Cardiology, Johannesburg Hospital and Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa. solcynth@yebo.co.za
Insights
This study identifies two new cases linking postaxial polydactyly with atrioventricular septal defects. Novel cardiac anomalies, including Tetralogy of Fallot and a double right atrioventricular valve, were observed.
Area of Science:
- Medical Genetics
- Cardiology
- Developmental Biology
Background:
- Postaxial polydactyly is a congenital limb malformation.
- Atrioventricular septal defects are complex congenital heart conditions.
Observation:
- Two pediatric patients presented with the co-occurrence of postaxial polydactyly and atrioventricular septal defects.
- These cases represent further examples of this rare association.
Findings:
- The first patient exhibited Tetralogy of Fallot in addition to the primary conditions.
- The second patient presented with a rare double orifice right atrioventricular valve.
Implications:
- These findings expand the spectrum of cardiac anomalies associated with postaxial polydactyly.
- Further research is warranted to understand the underlying genetic and developmental mechanisms.
- This information can aid in improved diagnosis and management of affected individuals.
Abstract:
We report two more patients with the association of postaxial polydactyly and atrioventricular septal defects. Additional cardiac findings, not previously described, were tetralogy of Fallot in the first case, and double orifice right atrioventricular valve in the second child.
Related Concept Videos
Cardiomyopathy III: Hypertrophic Cardiomyopathy
Mitral Valve Prolapse I: Introduction
Aortic Regurgitation II: Clinical Features and Diagnostic Tests
Rheumatic Heart Disease I: Introduction
Mitral Stenosis I: Introduction
Aneurysm I: Introduction

