Journal of Korean Medical Science

Korean Acad Medical Sciences (대한의학회)
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Effect of National Implementation of Telephone CPR Program to Improve Outcomes from Out-of-Hospital Cardiac Arrest: an Interrupted Time-Series Analysis

  • Lee, Yu Jin (Department of Emergency Medicine, Inha University Hospital) ;
  • Hwang, Seung-sik (Department of Public Health Sciences, Seoul National University Graduate School of Public Health) ;
  • Shin, Sang Do (Department of Emergency Medicine, Seoul National University College of Medicine) ;
  • Lee, Seung Chul (Department of Emergency Medicine, Dongkuk University Ilsan Hospital) ;
  • Song, Kyoung Jun (Department of Emergency Medicine, Seoul National University College of Medicine)
  • Received : 2018.06.04
  • Accepted : 2018.08.02
  • Published : 2018.12.17
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Abstract

Background: In cardiac arrest, the survival rate increases with the provision of bystander cardiopulmonary resuscitation (CPR), of which the initial response and treatment are critical. Telephone CPR is among the effective methods that might increase the provision of bystander CPR. This study aimed to describe and examine the improvement of neurological outcomes in individuals with out-of-hospital acute cardiac arrest by implementing the nationwide, standardized telephone CPR program. Methods: Data from the emergency medical service-based cardiac arrest registry that were collected between 2009 and 2014 were used. The effectiveness of the intervention in the interrupted time-series study was determined via a segmented regression analysis, which showed the risk ratio and risk difference in good neurological outcomes before and after the intervention. Results: Of 164,221 patients, 148,403 were analyzed. However, patients with unknown sex and limited data on treatment outcomes were excluded. Approximately 64.3% patients were men, with an average age of 63.7 years. The number of bystander CPR increased by 3.3 times (95% confidence interval [CI], 3.1-3.5) after the intervention, whereas the rate of good neurological outcomes increased by 2.6 times (95% CI, 2.3-2.9 [1.6%]; 1.4-1.7). The excess number was identified based on the differences between the observed and predicted trends. In total, 2,127 cases of out-of-hospital cardiac arrest (OHCA) after the intervention period received additional bystander CPR, and 339 cases of OHCA had good neurological outcomes. Conclusion: The nationwide implementation of the standardized telephone CPR program increased the number of bystander CPR and improved good neurological outcomes.

Keywords

Acknowledgement

Supported by : Inha University Hospital

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