Acute cardiac care & resuscitationCohort study
Where should we compress? Ultrasound identification of the ideal area of maximal compression for CPR
- prospective observational study
Authors' conclusion
TTE-based anatomic mapping demonstrates that guideline-recommended chest compression location frequently overlies the LVOT rather than the iAMC, suggesting the possibility of physiologic mismatch between CPR hand placement and optimal ventricular compression.
Study context
- Population
- Adult emergency department patients and volunteersparticipants enrolled
- Participants
- 152 patients
- Exposure
- guideline-recommended chest compression location aligns more closely with the left ventricular outflow tract (LVOT) than the ideal area of maximal compression (iAMC)
Main finding
As reported in the abstract
Median horizontal distance from the sternum
Observational data: associations, not effects.
Further findings
Located within 1 cm of the sternum
Correlation of lateral positions of the LVOT and iAMC
- r
- 0.489; 95% CI, 0.357-0.601; p < 0.001
- remained spatially distinct in most participants
Heat maps
- overlap between the LVOT and the compression zone, while the iAMC was more lateral
iAMC position by prior intrathoracic surgery or overall body size
- no independent association between prior intrathoracic surgery or overall body size and iAMC position
- Multivariable analyses
Original publication
Where should we compress? Ultrasound identification of the ideal area of maximal compression for CPR. Resuscitation. Published 23 July 2026. doi:10.1016/j.resuscitation.2026.111220
Summarised from the published abstract; every number is checked against it