| Namespace | MPheno.ontology | Obsolete | false |
| description | complete failure of the common arterial trunk opening out of both ventricles to divide into the aorta and pulmonary artery during development; type i is a form of the lesion with neither pulmonary arterial branch arises from the common trunk, and is more commonly recognized to be a form of pulmonary atresia with ventricular septal defect rather than truncus arteriosus |
