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J Korean Soc Emerg Med > Volume 29(6); 2018 > Article
Journal of The Korean Society of Emergency Medicine 2018;29(6): 578-584.
Association between prehospital i-gel insertion and PCO2 in patients with out-of-hospital cardiac arrest
Eunsom Cho1 , Eun-Hye Cho1 , Hyuk-Hoon Kim1 , Sang-Cheon Choi1 , Young-Gi Min1 , So Young Kang2 , Minjung Kathy Chae1
1Department of Emergency Medicine, Institute of Medical Sciences, Ajou University Medical Center, Ajou University School of Medicine, Suwon, Korea
2Department of Office of Biostatistics, Institute of Medical Sciences, Ajou University Medical Center, Ajou University School of Medicine, Suwon, Korea
Correspondence  Minjung Kathy Chae ,Tel: 031-219-7750, Fax: 031-219-7760, Email: mutjeo@gmail.com,
Received: June 29, 2018; Revised: August 15, 2018   Accepted: August 17, 2018.  Published online: December 31, 2018.
This study examined the initial partial pressure of carbon dioxide (PCO2) as a possible indicator of prehospital ventilation and its association with prehospital i-gel in out-of-hospital cardiac arrest (OHCA) patients.
The demographics and arrest parameters, including i-gel insertion and initial arterial blood gas analysis, of OHCA patients who visited the emergency department were analyzed retrospectively. Linear regression analysis was performed to examine the association between i-gel insertion and the initial PCO2.
A total of 106 patients were investigated. Fifty-six patients had prehospital i-gel insertion and 50 patients did not have a prehospital advanced airway. The initial PCO2 was higher in the i-gel group than the no advanced airway group (105.2 mmHg [77.5-134.9] vs. 87.5 mmHg [56.8-115.3], P=0.03). Prehospital i-gel insertion was associated with a higher initial PCO2 level (βcoefficient, 20.3; 95% confidence interval, 2.6-37.9; P=0.03).
Prehospital insertion of i-gel was associated with higher initial PCO2 values in OHCA patients compared to no advanced airway.
Key words: Airway management; Emergency medical services; Heart arrest; Cardiopulmonary resuscitation
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