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. Author manuscript; available in PMC: 2010 Mar 1.
Published in final edited form as: J Pediatr. 2008 Oct 31;154(3):379–384.e2. doi: 10.1016/j.jpeds.2008.09.021

Table 3.

Baseline Pulmonary Vascular Reactivity (n = 17)*

n
 Off iNO
 iNO
 p-value
mPAP, mm Hg 17 36.6 ± 11.2 26.8 ± 5.4 <0.001
mBP, mm Hg 17 55.8 ± 14.0 58.7 ± 13.2 0.137
mPAP/mBP 17 0.7 ± 0.16 0.5 ± 0.12 <0.001
RAP, mm Hg 15 6.5 ± 2.0 6.9 ± 2.77 0.361
PCWP, mm Hg 15 8.7 ± 2.09 9.5 ± 2.67 0.028
PVR, U * m2 15 5.6 ± 2.34 3.3 ± 1.78 <0.001
SVR, U * m2 14 10.5 ± 4.14 10.8 ± 3.99 0.834
PVR/SVR 14 0.6 ± 0.32 0.3 ± 0.16 0.004
Qp, L/min/m2 15 5.0 ± 1.49 6.7 ± 4.26 0.085
Qs, L/min/m2 15 4.9 ± 1.69 6.0 ± 4.03 0.127
Qp/Qs 15 1.1 ± 0.32 1.1 ± 0.27 0.212

Values are mean ± SD unless otherwise noted.

*

Not all measurements were available in some patients under each condition.

iNO = inhaled nitric oxide; mPAP = mean pulmonary artery pressure; RAP = mean right atrial pressure; PCWP = pulmonary capillary wedge pressure; PVR = pulmonary vascular resistance; SVR = systemic vascular resistance; mBP = mean systemic arterial pressure; Qp = pulmonary blood flow; Qs = systemic blood flow; Qp/Qs = shunt fraction. Comparisons by paired Student t-test.