Table 1

 Characteristics of the 21 subjects enrolled in study

Gestational age (weeks)3526–40
Birth weight (g)2260930–4600
Age at enrolment (hours)4.81.8–61.2
Transportation time (minutes)6520–180
Mean (SD)Range
pH7.32 (0.12)7.1–7.55
Fio20.52 (0.24)0.21–1.0
PAo2/Pao2 ratio*0.85 (1.3)0.03–5.9
Primary diagnosisNumber
Fio2, Inspired oxygen fraction; PAo2/Pao2 ratio, alveolar-arterial oxygen tension ratio.
Respiratory failure15
Cyanotic heart disease2
Persistent pulmonary hypertension of the newborn1
Severe anaemia1
Birth asphyxia1
Multiple congenital abnormalities1