Acute cardiac care & resuscitationCohort study
The cardiopulmonary resuscitation (CPR) compression matrix: relationship among depth, recoil, and rate
- retrospective cohort study
- two emergency medical services (EMS) systems
- hierarchical modeling to account for clustering
Authors' conclusion
A compression rate of 100-104 per minute was associated with the greatest likelihood of simultaneously achieving optimal depth and recoil.
Study context
- Population
- Adult cardiac arrest treated by professional rescuers in two EMS systems between 2017 and 2021patients providing 27,438 discrete 30-s segments
- Participants
- 611 participants
- Exposure
- "optimal" compression performance according to rate groups
Main finding
As reported in the abstract
Compression characteristics across segments
median compression rate (IQR 109,118)
113
median depth
50 mm
segments with complete recoil
42%
Observational data: associations, not effects.
Further findings
| Outcome | Values |
|---|---|
| "Optimal" compression (≥50 mm and complete recoil) by rate group · After accounting for clustering | 100-104 24% · 95-99 21% · <95 18% · 105-109 20% · 110-14 16% · 115-119 11% · 120-124 6% · ≥125 3% |
Original publication
The CPR compression matrix: relationship among depth, recoil, and rate. Resuscitation. Published 30 April 2026. doi:10.1016/j.resuscitation.2026.111117
Summarised from the published abstract; every number is checked against it