Structural Abnormalities | Functional Abnormalities |
---|---|
Inherent to TOF repair | RV volume overload |
   Partial or complete removal of pulmonary valve tissue |    Pulmonary regurgitation |
   Infundibulotomy scar |    Tricuspid regurgitation |
   Resection of RV/infundibular muscle bundles |    Left-to-right shunt |
   Right atriotomy scar | Ventricular septal defect |
   VSD patch | Atrial septal defect |
Residual or recurrent lesions | Aorto-pulmonary collaterals |
   RV outflow tract obstruction | RV pressure overload |
   Main or branch pulmonary artery stenosis |    RV outflow or pulmonary artery stenosis |
   Ventricular septal defect |    Pulmonary vascular disease |
   Atrial septal defect |    Pulmonary venous hypertension secondary to LV dysfunction |
Acquired lesions | RV systolic dysfunction |
   Tricuspid valve abnormalities | RV diastolic dysfunction |
   RV outflow tract aneurysm | LV dysfunction |
   RV fibrosis | Ventricular conduction delay |
Associated anomalies | Arrhythmias |
   Dilated aorta |    Atrial flutter |
   Associated congenital cardiovascular anomalies |    Atrial fibrillation |
   Associated genetic and non-cardiac anomalies |    Ventricular tachycardia |
 | Co-morbidities |
 |    Renal, pulmonary, musculoskeletal, neurodevelopmental abnormalities |