Parameter (units) | 30 g | 50 g | 90 g | full term |
---|---|---|---|---|
Resp frequency min-1 | 71.1 ± 3.7 | 75.7 ± 4.4 | 71.0 ± 4.1 | 60 |
Tidal volume ml/kg | 6.0 ± 0.3 | 6.4 ± 0.4 | 7.8 ± 0.9 | 6–8 |
Min ventilation ml/min/kg | 419 ± 20 | 480 ± 30 | 517 ± 41 | 400 |
Dyn compliance ml/cm H2O | .32 ± .02 | .34 ± .02 | .46 ± .07 | 1.00 |
Pul resistance cm H2O/L/s | 186 ± 20 | 134 ± 11 | 185 ± 22 | 40 |
Work breathing g·cm/kg | 24.1 ± 0.1 | 23.4 ± 0.2 | 36.9 ± 0.2 | 10–40 |