Impact of the number of on-scene emergency life-saving technicians and outcomes from out-of-hospital cardiac arrest in Osaka City

Kentaro Kajino, Tetsuhisa Kitamura, Taku Iwami, Mohamud Daya, Marcus Eng Hock Ong, Chika Nishiyama, Tomohiko Sakai, Kayo Tanigawa-Sugihara, Sumito Hayashida, Tatsuya Nishiuchi, Yasuyuki Hayashi, Atsushi Hiraide, Takeshi Shimazu

Research output: Contribution to journalArticle

19 Scopus citations

Abstract

Backgrounds: In Japan, ambulance staffing for cardiac arrest responses consists of a 3-person unit with at least one emergency life-saving technician (ELST). Recently, the number of ELSTs on ambulances has increased since it is believed that this improves the quality of on-scene care leading to better outcomes from out-of-hospital cardiac arrest (OHCA). The objective of this study was to evaluate the association between the number of on-scene ELSTs and OHCA outcome. Methods: This was a prospective cohort study of all bystander-witnessed OHCA patients aged ≥18. years in Osaka City from January 2005 to December 2007 using on an Utstein-style database. The primary outcome measure was one-month survival with favorable neurological outcome defined as a cerebral performance category ≤2. Multivariable logistic regression model were used to assess the contribution of the number of on-scene ELSTs to the outcome after adjusting for confounders. Results: Of the 2408 bystander-witnessed OHCA patients, one ELST group was present in 639 (26.5%), two ELST were present in 1357 (56.4%), and three ELST group in 412 (17.1%). The three ELST group had a significantly higher rate of one-month survival with favorable neurological outcome compared with the one ELST group (8.0% versus 4.5%, adjusted OR 2.26, 95% CI 1.27-4.04), while the two ELST group did not (5.4% versus 4.5%, adjusted OR 1.34, 95% CI 0.82-2.19). Conclusions: Compared with the one on-scene ELST group, the three on-scene ELST group was associated with the improved one-month survival with favorable neurological outcome from OHCA in Osaka City.

Original languageEnglish (US)
Pages (from-to)59-64
Number of pages6
JournalResuscitation
Volume85
Issue number1
DOIs
StatePublished - Jan 1 2014

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Keywords

  • Advanced life support
  • Cardiopulmonary resuscitation
  • Emergency life-saving technicians
  • Emergency medical services
  • Out-of-hospital cardiac arrest

ASJC Scopus subject areas

  • Emergency Medicine
  • Emergency
  • Cardiology and Cardiovascular Medicine

Cite this

Kajino, K., Kitamura, T., Iwami, T., Daya, M., Ong, M. E. H., Nishiyama, C., Sakai, T., Tanigawa-Sugihara, K., Hayashida, S., Nishiuchi, T., Hayashi, Y., Hiraide, A., & Shimazu, T. (2014). Impact of the number of on-scene emergency life-saving technicians and outcomes from out-of-hospital cardiac arrest in Osaka City. Resuscitation, 85(1), 59-64. https://doi.org/10.1016/j.resuscitation.2013.09.002