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March 16, 2026ResuscitationOpen Access

Multiplying Flow and Pressure: Detecting Respiratory Phases in Intra-Arrest Ventilation

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Authors

SOSimon OrlobDPDavid PurkarthoferMGMax Grobbel

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Overview

Experimental validation of a new algorithm detects respiratory phases in intra-arrest ventilation, indicating high accuracy for clinical use.

Key Points

  • The research aims to create a method for detecting respiratory phases during intra-arrest ventilation amidst chest compressions.
  • Developed an algorithm based on airflow and airway pressure products.
  • Used ventilatory recordings from 13 pigs under mechanical ventilation for validation.
  • Selected 20 ventilations before cardiac arrest and 20 during ongoing chest compressions for analysis.
  • Compared algorithm performance against expert-validated respiratory phase onsets.
  • Achieved perfect classification of inspiratory and expiratory phases in regular ventilation.
  • F1-score of 1 during regular ventilation and 0.971 during intra-arrest ventilation.
  • Successfully differentiated between artificial ventilations and airflow from chest compressions.

Cite This Study

Orlob et al. (2026) studied this question.

synapsesocial.com/papers/69b79df38166e15b153ab203https://doi.org/10.1016/j.resuscitation.2026.111050
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