Table 1.

Common Underlying Diagnoses by Age in Patients Requiring Heart Transplant

Age	Diagnosis	Further Details
< 1 month (infancy)	Hypoplastic left heart with abnormalities precluding Norwood procedure	Impaired ventricular function and inlet valve regurgitation
	Severe Ebstein’s anomaly	Symptomatic infants
	Pulmonary atresia with intact ventricular septum and abnormal coronary anatomy	Right ventricular dependent coronary circulation
	Severe valve abnormalities	eg mitral regurgitation with impaired function.
	Heterotaxy lesions	Impaired ventricular function and inlet valve regurgitationf
>6 months	Single ventricle	At various stages of palliation eg Blalock shunt (infants), Glenn shunt (young child), Fontan (older child)
	Transposition of great arteries	Typically post Mustard or Senning
	Right ventricular outflow tract lesions	eg post op. repair with impairment of ventricular function
	Ventricular/atrial septal defect	eg post op. repair with impairment of ventricular function
	Left ventricular outflow tract lesions	eg post op. repair with impairment of ventricular function
	Congenitally corrected-transposition of the great arteries	eg post op. repair with impairment of ventricular function. Sometimes post double switch operation
	Complete atrioventricular septal defects	eg post op. repair with impairment of ventricular function and severe valve regurgitation