• Amanda L Missel, Stephen R Dowker, Madeline Chiola, Jodyn Platt, Julia Tsutsui, Kristin Kasten, Robert Swor, Robert W Neumar, Nathaniel Hunt, Logan Herbert, Woodrow Sams, Brahmajee K Nallamothu, Theresa Shields, Emilee I Coulter-Thompson, and Charles P Friedman.
• Department of Learning Health Sciences, University of Michigan Medical School, Ann Arbor, Michigan.
• Prehosp Emerg Care. 2024 Jan 1; 28 (1): 118125118-125.

IntroductionFewer than 10% of individuals who suffer out-of-hospital cardiac arrest (OHCA) survive with good neurologic function. Bystander CPR more than doubles the chance of survival, and telecommunicator-CPR (T-CPR) during a 9-1-1 call substantially improves the frequency of bystander CPR.ObjectiveWe examined the barriers to initiation of T-CPR.MethodsWe analyzed the 9-1-1 call audio from 65 EMS-treated OHCAs from a single US 9-1-1 dispatch center. We initially conducted a thematic analysis aimed at identifying barriers to the initiation of T-CPR. We then conducted a conversation analysis that examined the interactions between telecommunicators and bystanders during the recognition phase (i.e., consciousness and normal breathing).ResultsWe identified six process themes related to barriers, including incomplete or delayed recognition assessment, delayed repositioning, communication gaps, caller emotional distress, nonessential questions and assessments, and caller refusal, hesitation, or inability to act. We identified three suboptimal outcomes related to arrest recognition and delivery of chest compressions, which are missed OHCA identification, delayed OHCA identification and treatment, and compression instructions not provided following OHCA identification. A primary theme observed during missed OHCA calls was incomplete or delayed recognition assessment and included failure to recognize descriptors indicative of agonal breathing (e.g., "snoring", "slow") or to confirm that breathing was effective in an unconscious victim.ConclusionsWe observed that modifiable barriers identified during 9-1-1 calls where OHCA was missed, or treatment was delayed, were often related to incomplete or delayed recognition assessment. Repositioning delays were a common barrier to the initiation of chest compressions.

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