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The following is a summary of “Effect of different intervals of verbal motivation during dispatcher-assisted CPR: A randomized controlled simulation trial,” published in the March 2025 issue of American Journal of Emergency Medicine by Gehlen et al.
Researchers conducted a retrospective study to analyze the impact of varying intervals of verbal motivation on cardiopulmonary resuscitation (CPR) quality during Dispatcher- assisted CPR (DA-CPR).
They randomized 159 medical laypersons into 3 groups: 1) “DA-CPR,” 2) “DA-CPR + motivation every 30s,” and 3) “DA-CPR + motivation every 60s.” Participants performed 8 minutes of CPR on a simulator. Verbal motivation included “push harder, do not relent,” with a metronome beat audible via telephone in the motivation groups. The primary endpoint was the difference in median chest compression depth over eight minutes, compared across groups.
The results showed significant differences in median compression depth among the 3 groups (P = 0.002). Only the “DA-CPR + motivation every 60s” group demonstrated an increase compared to standard DA-CPR and remained within the recommended range. Compressions with adequate depth (P = 0.009) and median compression rate (P < 0.001) were significantly higher in both motivational groups than in the “DA-CPR” group.
Investigators concluded that the combination of timed verbal encouragement and a metronome significantly improved chest compression depth over standard DA-CPR.
Source: sciencedirect.com/science/article/pii/S073567572400679X
