Association between prehospital i-gel insertion and PCO<sub>2</sub> in patients
with out-of-hospital cardiac arrest

Cho, Eunsom; Cho, Eun-Hye; Kim, Hyuk-Hoon; Choi, Sang-Cheon; Min, Young-Gi; Kang, So Young; Chae, Minjung Kathy

J Korean Soc Emerg Med > Volume 29(6); 2018 > Article

Original 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

, 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.

ABSTRACT

Objective:
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.
Method:
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.
Results:
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).
Conclusion:
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