Table 2

Mortality related to anatomical variation in pulmonary atresia associated with ventricular septal defect

		Survival at 1 year				Survival at end of study
		Alive (n=45)	Dead (n=15)			p Value	Alive (n=32)	Dead (n=28)	p Value
MAPCAS
Present	24	6	> 0.3				19	11	> 0.1
Absent	21	9	> 0.3				13	17	> 0.1
Pulmonary artery size^1-150
Absent	3	2	> 0.5^1-151			3	2	> 0.6^1-151
Reduced	21	6	> 0.7^1-152			14	13	> 0.6^1-152
Normal	21	5				15	11
Pulmonary arteries
Confluent	40	13	> 0.8				28	25	> 0.8
Non-confluent	5	2	> 0.8				4	3	> 0.8

↵1-150 Unknown in two cases.
↵1-151 Absent + reduced v normal.
↵1-152 Reduced v normal.
MAPCAS, major aortopulmonary collaterals.