Volume 29, Issue 3 (Iran South Med J 2026)
Iran South Med J 2026, 29(3): 165-176 |
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Biabani F, Moradi E, Salehi Y, Hosseini S M R. Delayed Ventilation CPR Performed by Prehospital Emergency Personnel. Iran South Med J 2026; 29 (3) :165-176
URL: http://ismj.bpums.ac.ir/article-1-2594-en.html
URL: http://ismj.bpums.ac.ir/article-1-2594-en.html
1- Cardiovascular Research Center, Qaen Faculty of Medical Sciences, Birjand University of Medical Sciences, Birjand, Iran
2- Student Research Committee, Birjand University of Medical Sciences, Birjand, Iran
3- Department of Emergency Nursing, School of Nursing and Midwifery Birjand University of Medical Sciences, Birjand, Iran ,Hosseini.smr1@bums.ac.ir
2- Student Research Committee, Birjand University of Medical Sciences, Birjand, Iran
3- Department of Emergency Nursing, School of Nursing and Midwifery Birjand University of Medical Sciences, Birjand, Iran ,
Abstract: (270 Views)
Background: Chest compression quality in prehospital resuscitation often remains suboptimal due to interruptions caused by ventilation. The delayed ventilation technique has been proposed to reduce these interruptions; however, sufficient evidence regarding its superiority over the conventional 30:2 method is currently lacking. This study aimed to compare chest compression quality between conventional and delayed ventilation cardiopulmonary resuscitation (CPR) methods performed by prehospital emergency personnel.
Materials and Methods: This quasi-experimental crossover study was conducted with 60 emergency medical technicians from Birjand EMS 115. Each participant performed both CPR methods in a randomized order on a manikin equipped with a Q-CPR device: the conventional method (3 cycles of 30:2) and the delayed ventilation method (3 cycles of 200 uninterrupted compressions with passive oxygen delivery). Chest compression quality included the total score and four components: rate, depth, chest recoil, and interruptions. Data were analyzed using paired t-test, independent t-test, and Pearson’s correlation coefficient.
Results: The mean total chest compression quality score was significantly higher in the delayed ventilation method compared to the conventional method (56.12 ± 13.76 vs. 51.08 ± 12.42, P < 0.001). Additionally, significant differences favoring the delayed ventilation method were observed in all components: rate (P < 0.001), depth (P < 0.001), chest recoil (P = 0.002), and interruptions (P<0.001). Bachelor's degree and previous CPR experience were associated with better compression quality.
Conclusion: The delayed ventilation method significantly improved chest compression quality in all key components compared to the conventional method. This simple, teachable technique is suitable for prehospital settings.
Materials and Methods: This quasi-experimental crossover study was conducted with 60 emergency medical technicians from Birjand EMS 115. Each participant performed both CPR methods in a randomized order on a manikin equipped with a Q-CPR device: the conventional method (3 cycles of 30:2) and the delayed ventilation method (3 cycles of 200 uninterrupted compressions with passive oxygen delivery). Chest compression quality included the total score and four components: rate, depth, chest recoil, and interruptions. Data were analyzed using paired t-test, independent t-test, and Pearson’s correlation coefficient.
Results: The mean total chest compression quality score was significantly higher in the delayed ventilation method compared to the conventional method (56.12 ± 13.76 vs. 51.08 ± 12.42, P < 0.001). Additionally, significant differences favoring the delayed ventilation method were observed in all components: rate (P < 0.001), depth (P < 0.001), chest recoil (P = 0.002), and interruptions (P<0.001). Bachelor's degree and previous CPR experience were associated with better compression quality.
Conclusion: The delayed ventilation method significantly improved chest compression quality in all key components compared to the conventional method. This simple, teachable technique is suitable for prehospital settings.
Keywords: Cardiopulmonary Resuscitation, Delayed Ventilation, Chest Compression Quality, Prehospital Emergency Care
Original: Original |
Subject:
Emergency Medicine
Received: 2026/05/22 | Accepted: 2026/07/19 | Published: 2026/08/23
Received: 2026/05/22 | Accepted: 2026/07/19 | Published: 2026/08/23
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