Table 1

Respiratory gas exchange data in 18 premature newborn infants before and after the administration of aminophylline

Before After Mean difference p Value
O2consumption (ml/min/kg)5.776.250.47 (0.18)<0.02
CO2 production (ml/min/kg)5.085.660.57 (0.15)<0.001
Respiratory quotient0.870.900.02 (0.01)<0.03
Energy expenditure (kJ/kg/day)17018515 (5)<0.02
Transcutaneous Po2 (mm Hg)67.867.2−0.67 (2.35)0.72
Transcutaneous Pco2 (mm Hg)39.835.4−4.48 (1.06)<0.02
  • Data are expressed as mean (SEM).