Affiliations 

  • 1 Department of Emergency and Critical Care Medicine Nippon Medical School Tama Nayagama Hospital Tokyo Japan
  • 2 Department of EMS System Graduate School Kokushikan University Tokyo Japan
  • 3 Department of Emergency Medicine College of Medicine Seoul National University Seoul Korea
  • 4 Department of Emergency Medicine National Taiwan University Taipei Taiwan
  • 5 Department of Emergency Medicine Hospital Sungai Buloh Sungai Buloh Selangor Malaysia
  • 6 Department of Emergency Medicine Rajavithi Hospital Bangkok Thailand
  • 7 Department of Health & Medical Services ED-Trauma Centre Rashid Hospital Dubai United Arab Emirates
  • 8 Health Services and Systems Research Duke-NUS Medical School Singapore Singapore
Acute medicine & surgery, 2019 05 22;7(1):e430.
PMID: 31988755 DOI: 10.1002/ams2.430

Abstract

Aim: As a population ages, it can impact on the characteristics and outcomes of cardiogenic out-of-hospital cardiac arrest (OHCA) patients. This study aimed to evaluate the relationship between the age incidence of cardiogenic OHCA and population aging.

Methods: This was a post-hoc analysis of the Pan Asian Resuscitation Outcomes Study (PAROS) database. Data on the population old-age dependency ratio (i.e. elderly/non-elderly) were extracted from publicly accessible sources (United Nations and World Health Organization).

Results: We analyzed 40,872 OHCA cases from seven PAROS countries over the period 2009 to 2013. We found significant correlation between the population old-age dependency ratio and elderly/non-elderly ratio in OHCA patients (r = 0.92, P = 0.003). There was a significant correlation between the population old-age dependency ratio and risk differences of 30-day survival rates for non-elderly and elderly OHCA patients (r = 0.89, P = 0.007).

Conclusions: Our findings suggest that the proportion of elderly among OHCA patients will increase, and outcomes could increasingly differ between elderly and non-elderly as a society ages progressively. This has implications for planning and delivery of emergency services as a society ages.

* Title and MeSH Headings from MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.