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Effects of flashlight guidance on chest compression performance in cardiopulmonary resuscitation in a noisy environment

 Je Sung You  ;  Sung Phil Chung  ;  Chul Ho Chang  ;  Incheol Park  ;  Hye Sun Lee3  ;  SeungHo Kim  ;  Hahn Shick Lee 
 Emergency Medicine Journal, Vol.30(8) : 628-632, 2013 
Journal Title
 Emergency Medicine Journal 
Issue Date
BACKGROUND: In real cardiopulmonary resuscitation (CPR), noise can arise from instructional voices and environmental sounds in places such as a battlefield and industrial and high-traffic areas. A feedback device using a flashing light was designed to overcome noise-induced stimulus saturation during CPR. This study was conducted to determine whether 'flashlight' guidance influences CPR performance in a simulated noisy setting. MATERIALS AND METHODS: We recruited 30 senior medical students with no previous experience of using flashlight-guided CPR to participate in this prospective, simulation-based, crossover study. The experiment was conducted in a simulated noisy situation using a cardiac arrest model without ventilation. Noise such as patrol car and fire engine sirens was artificially generated. The flashlight guidance device emitted light pulses at the rate of 100 flashes/min. Participants also received instructions to achieve the desired rate of 100 compressions/min. CPR performances were recorded with a Resusci Anne mannequin with a computer skill-reporting system. RESULTS: There were significant differences between the control and flashlight groups in mean compression rate (MCR), MCR/min and visual analogue scale. However, there were no significant differences in correct compression depth, mean compression depth, correct hand position, and correctly released compression. The flashlight group constantly maintained the pace at the desired 100 compressions/min. Furthermore, the flashlight group had a tendency to keep the MCR constant, whereas the control group had a tendency to decrease it after 60 s. CONCLUSION: Flashlight-guided CPR is particularly advantageous for maintaining a desired MCR during hands-only CPR in noisy environments, where metronome pacing might not be clearly heard.
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1. College of Medicine (의과대학) > Dept. of Anesthesiology and Pain Medicine (마취통증의학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Dept. of Emergency Medicine (응급의학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Yonsei Biomedical Research Center (연세의생명연구원) > 1. Journal Papers
Yonsei Authors
김승호(Kim, Seung Ho)
박인철(Park, In Cheol) ORCID logo https://orcid.org/0000-0001-7033-766X
유제성(You, Je Sung) ORCID logo https://orcid.org/0000-0002-2074-6745
이한식(Lee, Hahn Shick)
이혜선(Lee, Hye Sun) ORCID logo https://orcid.org/0000-0001-6328-6948
장철호(Chang, Chul Ho) ORCID logo https://orcid.org/0000-0001-5647-8298
정성필(Chung, Sung Pil) ORCID logo https://orcid.org/0000-0002-3074-011X
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