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06:04
Ultrasonographic Assessment During Cardiopulmonary Resuscitation
Published on: October 24, 2020
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Investigating BLS instructors' ability to evaluate CPR performance: focus on compression depth, rate, and recoil
Shih-Jhan Lin1, Chih-Jan Chang1, Shao-Chung Chu1
1Department of Emergency Medicine, College of Medicine, National Cheng Kung University Hospital, National Cheng Kung University, No.138, Sheng Li Road, Tainan city, 704, Taiwan.
BMC Emergency Medicine
|January 29, 2025
Summary
Basic Life Support instructors and Quantitative CPR devices show moderate to low agreement in assessing cardiopulmonary resuscitation skills. Improving CPR training assessments is crucial for enhancing life-saving interventions.
Area of Science:
- Emergency Medicine
- Cardiovascular Resuscitation Science
- Medical Education Technology
Background:
- Out-of-hospital cardiac arrest (OHCA) has low survival rates, necessitating effective bystander cardiopulmonary resuscitation (CPR) training.
- Basic Life Support (BLS) instructors play a critical role in assessing and correcting CPR techniques during training.
- This study investigates the agreement between BLS instructor assessments and Quantitative CPR (QCPR) device evaluations.
Purpose of the Study:
- To evaluate the concordance between CPR quality assessments performed by BLS instructors and QCPR devices.
- To identify discrepancies in the evaluation of key CPR metrics: chest compression speed, depth, and recoil.
- To inform improvements in CPR training methodologies and assessment reliability.
Main Methods:
- Analysis of existing data from BLS courses conducted at National Cheng Kung University Hospital (October 2017 - April 2018).
- Comparison of CPR quality assessments by BLS instructors against data recorded by QCPR devices.
- Statistical analysis using Cohen kappa statistic and correlation analysis to measure interrater reliability and consistency.
Main Results:
- Moderate to low interrater reliability was observed between instructors and QCPR devices.
- Cohen kappa values were 0.65 for depth, 0.56 for speed, and 0.50 for recoil.
- Depth evaluations showed higher consistency (correlation coefficient = 0.7) compared to speed and recoil.
Conclusions:
- There is a need to refine CPR training methods and assessment tools.
- Adopting advanced technological aids like QCPR devices can enhance the reliability of CPR skill assessments.
- Improved assessment accuracy can lead to more effective training and potentially increase survival rates for OHCA.
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