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Table 1 Morphological characteristics of atrioventricular septal defects

From: Understanding atrioventricular septal defect: Anatomoechocardiographic correlation

n = 60 Anatomic finding n %
Position (Situs) Solitus 33 55
  Inversus 6 10
  Dextroisomerism 19 32
  Levoisomerism 2 3
AV Connection Concordant 27 45
  SVDI 10 17
  RVDI 9 15
  LVDI 8 14
  Ambiguous 5 8
V-A Connection RVDO 21 35
  Concordant 19 32
  SVDO 11 18
  Discordant 9 15
Associated anomalies Pulmonary stenosis 19 32
  Pulmonary atresia 10 17
  Patent foramen ovale 9 15
  Patent ductus arteriosus 5 8
  Anomalous connection of pulmonary veins 5 8
  AV Valve dysplasia 1 1.6
  Obstruction of the LV outflow tract 1 1.6
  1. A-V: Atrioventricular; SVDI: Single ventricular double inlet; RVDI: Right ventricular double inlet; LVDI: Left ventricular double inlet; V-A: Ventriculo-arterial; RVDO: Right ventricular double outlet; SVDO: Single ventricular double outlet.