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Factors affecting the accuracy of chest compression depth estimation.
Jung Hee Kang1, Won Chul Cha1, Minjung Kathy Chae1
1Department of Emergency Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
Clinical and Experimental Emergency Medicine
|December 31, 2014
Summary
Healthcare providers visually estimating chest compression depth had an average accuracy of 0.89. Accuracy was influenced by provider occupation, camera angle, and the actual compression depth during cardiopulmonary resuscitation.
Area of Science:
- Emergency Medicine
- Cardiopulmonary Resuscitation
- Medical Simulation
Background:
- Accurate chest compression depth is critical for effective cardiopulmonary resuscitation (CPR).
- Visual estimation of compression depth is commonly used but its accuracy is not well-defined.
Purpose of the Study:
- To evaluate the accuracy of visual estimation of chest compression depth.
- To identify factors influencing the accuracy of this estimation.
Main Methods:
- A simulation study using a basic life support mannequin (Ambu man) with recorded chest compressions at depths from 1-7 cm.
- 25 video clips from three viewpoints were shown to 103 healthcare providers (physicians, nurses, EMTs) who estimated compression depths.
- Examiner (occupation, experience) and environmental (camera position) factors were collected and analyzed using multivariate analysis.
Main Results:
- The mean accuracy for estimating chest compression depth was 0.89.
- Provider occupation and clinical experience showed a significant association with accuracy (P=0.03 and P=0.08).
- Environmental factors, specifically camera position, significantly impacted accuracy (all P<0.001).
Conclusions:
- The accuracy rate of visual chest compression depth estimation was 0.89.
- Accuracy was significantly associated with the healthcare provider's occupation, camera view position, and the actual compression depth.
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