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August 13, 2026Scandinavian Journal of Trauma Resuscitation and Emergency MedicineOpen Access

Ambient oxygen enrichment during cardiopulmonary resuscitation: an overestimated risk? - Insights from a manikin study

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Authors

DHDominik J. HoechterFPF PfeifferMSMichael Storz

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Overview

Manikin study assesses oxygen levels during CPR, revealing no significant accumulation risks, suggesting revised defibrillation guidelines.

Key Points

  • This study aims to characterize ambient oxygen concentrations during CPR and evaluate the impact of oxygen delivery device removal.
  • Controlled manikin-based simulation study with 20 resuscitation scenarios under standardized conditions.
  • Oxygen concentrations measured at three typical defibrillation sites at 10-second intervals.
  • Analysis conducted using linear mixed-effects models to determine predictors of oxygen fraction.
  • Median oxygen concentration recorded was 21.6% (IQR 21.3–22.1%).
  • Removing oxygen delivery devices did not lower oxygen concentrations near the manikin's head.
  • Endotracheal intubation and use of an OxyDemand valve slightly reduced oxygen fractions, while other factors showed no significant effects.

Cite This Study

Hoechter et al. (2026) studied this question.

synapsesocial.com/papers/6a7d76c82b0e0cff3f6407e8https://doi.org/10.1186/s13049-026-01669-3
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