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. 2019 May 22;7(1):e430.
doi: 10.1002/ams2.430. eCollection 2020 Jan-Dec.

Impact of population aging on the presentation of out-of-hospital cardiac arrest in the Pan Asian Resuscitation Outcomes Study

Takashi Tagami  1   2   3 , Hideharu Tanaka  4 , Sang Do Shin  5 , Matthew Huei-Ming Ma  6 , Patrick Chow-In Ko  6 , Sarah Karim  7 , Pairoj Khruekarnchana  8 , Ghulam Yasin Naroo  9 , Marcus Eng Hock Ong  2   10
Affiliations

Impact of population aging on the presentation of out-of-hospital cardiac arrest in the Pan Asian Resuscitation Outcomes Study

Takashi Tagami et al. Acute Med Surg. .

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.

Keywords: Aging; cardiac arrest; epidemiology; old‐age dependency ratio.

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Figures

Figure 1
Figure 1
Age distribution in out‐of‐hospital cardiac arrest patients between seven “aging” and “aged” countries. We defined population “aged” countries as those with an old‐age dependency ratio ≥12.6% (global average in 2015) and population “aging” countries as those with an old‐age dependency ratio <12.6%. Population aged countries were Japan, Taiwan, Korea, Singapore, and Thailand. Population aging countries were Malaysia and the United Arab Emirates.
Figure 2
Figure 2
Age distribution of cardiogenic out‐of‐hospital cardiac arrest in seven countries
Figure 3
Figure 3
Relationship between population old‐age dependency ratios of the United Nations (UN) data and elderly/non‐elderly ratios in the Pan Asian Resuscitation Outcomes Study (PAROS) data. UAE, United Arab Emirates.
Figure 4
Figure 4
Relationship between population old‐age dependency ratios of the United Nations (UN) data and risk differences in 30‐day survival rates between non‐elderly and elderly individuals. UAE, United Arab Emirates.
See this image and copyright information in PMC

References

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