Table 1.

Comparative Data at Baseline, Median (Range)

Control (n = 23)Nitric Oxide (n = 26)
Age at entry (hours)25 (3–63)18 (5–83)
Gestation (weeks)40 (36–42)40 (35–42)
Weight (kg)3.4 (2.2–5.2)3.5 (2.5–5.0)
Heart rate (beats per min)165 (139–200)175 (135–195)
Mean blood pressure (mm Hg)54 (39–80)53 (35–76)
Pao2(mm Hg)64 (27–212)47 (24–113)
pH7.48 (7.23–7.62)7.51 (7.14–7.66)
Paco2 (mm Hg)34 (18–58)31 (13–75)
Mean airway pressure (cmH2O)15.2 (8.3–32)16.3 (10.8–25.6)
Oxygenation index29.4 (10.5–114)30.4 (10.4–84.5)