Table 1

Demographic and haemodynamic data

Patient		Age (years)		Diagnosis		Previous operations		Level of obstruction	Interval (months)^1-151		Balloons^1-152		Gradient (mm Hg)		RV:FA		Doppler
Patient		Age (years)		Diagnosis		Previous operations		Level of obstruction	Interval (months)^1-151		Balloons^1-152		Pre	Post	Pre	Post	Pre	Post	FU
1	15	AoV stenosis	Valvotomy; re-valvotomy; Ross procedure (pulmonary autograft + 21 mm valved homograft RV-PA conduit; replacement AoV	Proximal conduit	24	15 mm + 12 mm	45	7	0.75	0.43		100	36	41
2	8	Dextrocardia, cTGA, VSD, PA	R A-P shunt;16 mm Hancock conduit + VSD closure	Proximal conduit and valve	72	12 mm + 10 mm	50	15	0.86	0.44		88	31	44
3	10	PA/VSD	R A-P shunt; 18 mm homograft conduit + VSD closure	Proximal conduit and LPA origin	40	15 mm + 10 mm	40	5	0.72	0.33		74	34	46
4	4	Common arterial trunk	PA banding;12 mm homograft conduit + VSD closure	Multiple	24	8 mm + 8 mm	62	16	0.85	0.37		100	38	44
5^1-150	17	TA	R and L A-P shunts; Fontan procedure; insertion of two 22 mm valved homograft conduits from IVC to RA and from RA to PT	Multiple/multiple^1-150	127	15 mm + 15 mm	3/7^1-150	0/2^1-150	–	–		–	–	–

↵1-150 Refers separately to the two shunts. Gradients are between IVC and RA and RA and PT, respectively.
↵1-151 Time from conduit placement to balloon angioplasty.
↵1-152 Balloon diameters correspond to the largest combination of balloons used in dilating each conduit.
AoV, aortic valve; A-P, aorto-pulmonary shunt; cTGA, congenitally corrected transposition; FU, Doppler gradient at last follow up examination; IVC, inferior vena cava; L, left; LPA, left pulmonary artery; PA, pulmonary atresia; PT, pulmonary trunk; R, right; RA, right atrium; RV:FA, right ventricle to femoral artery systolic pressure ratio; TA, tricuspid atresia; VSD, ventricular septal defect.