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Cardiac arrest
Double-click metronome preserves CPR quality
Temporal trends in chest compression quality during a metronome-guided CPR simulation: a secondary analysis of the RITMICO study
Resuscitation Plus · Added 8 September 2026
Secondary analysis of 477 volunteers in prolonged manikin CPR — compression depth and chest recoil decayed within minutes, and a double-click metronome with separate compression and release cues preserved quality significantly longer than a standard metronome.
- Study type
- Simulation
- Design
- Secondary analysis of a simulation study (RITMICO) with linear mixed-effects modelling
- Participants
- 477 volunteers performing prolonged manikin CPR
- Main finding
- Compression depth and chest compression release velocity declined early during prolonged compressions; the double-click metronome produced consistently higher values for all CPR quality metrics than a standard metronome (all p<0.05) with later deterioration in release velocity
- Caveat
- Manikin simulation with volunteers, not real resuscitation; secondary analysis
- Bottom line
- Hypothesis-generating
Why it matters in Australia (Medium relevance). transferability — manikin study, but recoil decay is a real field problem and metronome cues are available on most defibrillators
Learning goal
Strengthen my ability to sustain compression depth and full chest recoil during prolonged resuscitation.
More
- Topic: Cardiac arrest
- Daily scan: 8 September 2026
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