. Author manuscript; available in PMC: 2014 Oct 24.

Published in final edited form as: J Am Soc Echocardiogr. 2013 Mar 26;26(5):521–529. doi: 10.1016/j.echo.2013.02.012

Table 3.

Correlation of Doppler measures (mean±SD) at each study interval with interstage survival, survival to stage II discharge, and long-term survival for the MBTS cohort

	Interstage death/heart transplant		Death/heart transplant from date of echo to stage II surgery		Long-term death/heart transplant from date of echo
	Yes	No	Yes	No	Yes	No
Pre-Norwood Predictors:
Neoaortic cardiac index, L/min/m²	9.17±4.32 (n=22)	9.54±3.78 (n=112)	8.93±3.69 (n=47)	9.55±3.69 (n=119)	9.05±3.49 (n=58)	9.55±3.80 (n=108)
Neoaortic cardiac index, L/min/m²	HR=0.97 P=0.58		HR=0.96 P=0.28		HR=0.97 P=0.37
Post-Norwood Predictors:
Neoaortic cardiac index, L/min/m²	7.55±2.02 (n=39)	8.24±2.73 (n=136)	7.71±2.40 (n=53)	8.24±2.76 (n=145)	7.91±2.76 (n=68)	8.20±2.63 (n=130)
Neoaortic cardiac index, L/min/m²	HR=0.91 P=0.15		HR=0.93 P=0.22		HR=0.96 P=0.36
Descend aortic retrograde fraction	0.43±0.16 (n=38)	0.45±0.14 (n=135)	0.46±0.21 (n=50)	0.45±0.15 (n=145)	0.45±0.19 (n=66)	0.45±0.15 (n=129)
Descend aortic retrograde fraction	HR=0.54 P=0.59		HR=1.58 P=0.61		HR=1.21 P=0.81

	Death/heart transplant from date of echo to stage II discharge		Long-term death/heart transplant from date of stage II discharge		Long-term death/heart transplant from date of echo
	Yes	No	Yes	No	Yes	No
Pre-Stage II Predictors:
Neoaortic cardiac index, L/min/m²	6.43±1.18 (n=5)	9.53±3.10 (n=140)	9.28±2.16 (n=9)	9.54±3.16 (n=131)	8.26±2.30 (n=14)	9.54±3.16 (n=131)
Neoaortic cardiac index, L/min/m²	HR=0.58 P=0.06		HR=0.97 P=0.76		HR=0.86 P=0.12
Descend aortic retrograde fraction	0.49±0.09 (n=6)	0.41±0.19 (n=123)	0.31±0.14 (n=10)	0.41±0.19 (n=113)	0.38±0.15 (n=16)	0.41±0.19 (n=113)
Descend aortic retrograde fraction	HR=13.02 P=0.21		HR=0.02 P=0.05		HR=0.32 P=0.43

MBTS=modified Blalock Taussig shunt; HR=hazard ratio