Table 2

 Respiratory mechanics and outcome data for infants in two arms of a randomised trial of resuscitation: standard anaesthetic rebreathing circuit and Dräger Babylog

VariableStandard anaesthetic rebreathing circuit (n = 13 unless noted)Dräger Babylog (n = 11 unless noted)p Value
“Time recorded” is the entire length of data recording. Mean time for infants on the standard anaesthetic rebreathing circuit (SC)  =  20 minutes, and the mean time for those on the Dräger Babylog (DB)  =  19 minutes. Summary of respiratory mechanics measurements for 15 infants (8 SC and 7 DB).
*Values are mean (range).
†Values are median (range).
‡Values are number (%).
††Maximum observed intubation time was seven minutes.
‡‡Maximum observed intubation time was three minutes.
¶Two sample t test.
§Wilcoxon rank sum test.
**Fisher’s exact test.
PEEP, Positive end expiratory pressure; PIP, peak inspiratory pressure; PIE, pulmonary interstitial emphysema; eVt, expiratory tidal volume.
PEEP (mean for time recorded; cm H2O)*5.2 (2.9–7.2)7.9 (7.1–8.5)0.001¶
PEEP (CV for time recorded)†0.62 (0.40–0.98)0.12 (0.08–0.40)0.002§
PIP (mean for time recorded; cm H2O)*24.5 (14.6–36.8)24.0 (16.8–31.7)0.88¶
PIP (CV for time recorded)†0.22 (0.12–0.38)0.26 (0.09–0.42)0.30§
eVt (mean for time recorded; ml/kg birth weight/breath)*9.7 (4.9–15.7)9.4 (6.6–14.6)0.85¶
eVt (CV for time recorded)†0.47 (0.32–0.63)0.38 (0.32–0.61)0.64§
Age at intubation (minutes)†3 (2–94††)2 (1–140‡‡)
Pco2 on admission (kPa)†6.3 (4.4–15.8)5.8 (3.4–9.6)0.56§
Fio2 on admission (%)†32 (21–100)40 (21–100)0.84§
Lung area (mm2/kg)*1221 (847–1895) n = 121152 (725–1859) n = 90.62¶
Mortality‡4 (31%)1 (9%)0.33**
Oxygen at 36 weeks and/or death‡8 (73%) n = 117 (70%) n = 101.00**
Airleak, PIE, or pneumothorax‡5 (38%)1 (9%)0.17**