Table 4. Patients with functionally single ventricle.

Patient No	Age (years)	Length of FUP on CRT (months)	Type of surgical repair	Diagnosis	Previous ventricular pacing	No of ventricular leads	NYHA class before CRT	NYHA class after CRT	Outcome
57	9.5	3.5	TCPC	SV-LV	Yes	2	3.0	3.0	Non-responder
59	3.7	0.5	TCPC	HLHS	No	3	3.0	2.0	Improved
70	11.0	7.9	BCPA	Unbalanced AVSD	Yes	2	2.0	1.0	Improved
79	30.3	19.9	TCPC	SV	Yes	2	2.5	2.0	Improved

AVSD, atrioventricular septal defect; BCPA, bi-directional cavopulmonary anastomosis; CRT, cardiac resynchronisation therapy; FUP, follow-up; HLHS, hypoplastic left heart syndrome; NYHA, New York Heart Association; SV, unspecified single ventricle; SV-LV, morphologically left single ventricle; TCPC, total cavopulmonary connection.