Pediatric anesthesia & critical care

Sevoflurane Washin With the Dräger Apollo and GE Datex Ohmeda Aisys Workstations in Healthy Children

Paediatr AnaesthPublished Prospective observational study

Authors' conclusion

The washing of sevoflurane with the Dräger Apollo workstation is slower, and the maximum sevoflurane concentrations are less in children than with the Ohmeda Aisys workstation.

Study context

Population
Healthy children scheduled for elective surgery undergoing inhalational induction with 8% sevoflurane and 66% nitrous oxide12 per workstation
Participants
24 children
Exposure
Apollo vs Aisys
  • Apollon = 12
  • Aisysn = 12reference
Outcome
Sevoflurane wash-in profiles (derived wash-in metrics during induction)

Main finding

As reported in the abstract

Mean inspired sevoflurane concentrations lower with Apollo vs Aisys
p < 0.013

Observational data: associations, not effects.

Secondary outcomes

OutcomeApolloAisysEstimateP value
Inspired sevoflurane concentration · 1 min22% less with Apollo · mean6.4% (SD 0.4%)7.8% (SD 0.67%)mean difference 1.4 (95% CI 0.88–1.8)P < 0.0001
Maximum inspired sevoflurane concentration during induction18% less with Apollo · mean7.2% (SD 0.3%)8.5% (SD 0.4%)mean difference 1.3 (95% CI 0.99–1.6)P < 0.0001
Maximum expired sevoflurane concentration during induction15% less with Apollo · mean6.8% (SD 0.37%)7.8% (SD 0.9%)mean difference 1.01 (95% CI 0.41–1.6)P < 0.002
Time to reach 90% of maximum inspired concentration during induction3.5-fold greater with Apollo · median, min1.75 (IQR 1–2.4)0.5 (IQR 0.5–0.5)median difference −1.25 (95% CI −1.5 to −0.5)P < 0.0019

Original publication

Sevoflurane Washin With the Dräger Apollo and GE Datex Ohmeda Aisys Workstations in Healthy Children. Paediatr Anaesth. Published 3 April 2025. doi:10.1111/pan.15106

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