Table I.

Clinical Events from Norwood to Age 6 Years by Shunt Type

Outcome	All (n=549)	RVPAS* (n=274)	MBTS† (n=275)	P-value‡
	No. of Patients
Death or cardiac transplant	212	99	113	0.25
Death (prior to transplant)	190	87	103
Cardiac transplant	22	12	10
Death/transplant ≤1 year	172	72	100
Death/transplant >1 to ≤3 years	25	18	7
Death/transplant >3 to ≤6 years	15	9	6
	Incidence per 100 patient-years
Cardiac surgeries	100.6	100.8	100.4	0.93
Catheter procedures	30.7	37.8	23.0	<0.001
Interventional catheterizations	21.5	25.3	17.4	<0.001
Complications	176.3	175.7	177.0	0.83
	No. of Patients (%)
Pacemaker placed	14 (2.6%)	8 (2.9%)	6 (2.2%)	0.60
Thrombotic event	86 (15.7%)	42 (15.3%)	44 (16.0%)	0.91
Stroke	38 (6.9%)	23 (8.4%)	15 (5.5%)	0.18
Seizure	71 (12.9%)	40 (14.6%)	31 (11.3%)	0.26
PLE§	17 (3.1%)	12 (4.4%)	5 (1.8%)	0.09
Plastic bronchitis	3 (0.5%)	1 (0.4%)	2 (0.7%)	1.00

^*RVPAS = right-ventricular-to-pulmonary-artery shunt MBTS = modified Blalock-Taussig shunt

^†MBTS = modified Blalock-Taussig shunt

^‡P-values for incidence rate and proportion comparisons are based on Poisson regression and Fisher exact test, respectively. P-value for comparison of 6-year death/transplant is based on Wald test of the pointwise Kaplan-Meier event rate estimates at 6 years.

^§PLE = protein-losing enteropathy