Ventilation Rates and Capnography in Pediatric Out-of-Hospital Cardiac Arrest with Advanced Airways.

Area of Science:

• Emergency Medicine
• Pediatric Resuscitation
• Cardiology

Background:

• Ventilation is critical in out-of-hospital cardiac arrest (OHCA) resuscitation, yet data on ventilation rates in pediatric OHCA (pOHCA) are scarce.
• Characterizing ventilation and end-tidal capnography (EtCO2) is essential for optimizing resuscitation strategies.

Purpose of the Study:

• To characterize ventilation rates and EtCO2 levels during pOHCA resuscitation after advanced airway placement.
• To compare ventilation characteristics between patients who achieved return of spontaneous circulation (ROSC) and those who did not.

Main Methods:

• Retrospective cohort study of pediatric patients (<18 years) with non-traumatic OHCA treated by an urban EMS system.
• Ventilation rates and EtCO2 were analyzed from continuous cardiac monitor data using manual review and automated detection algorithms.
• Statistical analyses included t-tests, Cochran-Armitage test for trend, and regression modeling to assess associations with ROSC.

Main Results:

• Thirty cases of pOHCA were analyzed, with a majority being infants and unwitnessed arrests.
• Ventilation rates differed significantly between ROSC and non-ROSC groups (9.2 vs 6.9 breaths/min, p < 0.001).
• EtCO2 trends over time also differed significantly between ROSC and non-ROSC groups, with EtCO2 significantly associated with ROSC (OR 1.0, p < 0.001).

Conclusions:

• This study provides initial insights into ventilation patterns during pOHCA.
• Observed differences in ventilation rates and EtCO2 trends between ROSC and non-ROSC groups highlight their potential importance in pediatric resuscitation outcomes.