Assertion: quadricuspid aortic valve | /r/CapableOf | present as isolated congenital anomaly
Facets:
value: usually
type: TEMPORAL
Source sentences:
text: Quadricuspid aortic valve (QAV) usually presents as an isolated congenital anomaly, but other associated cardiac anomalies have been reported in about 18-32% of cases including aortic root dilatation , tetralogy of Fallot , patent ductus arteriosus , atrial and ventricular septal defects , and anomalous origin of the coronary arteries .