Abstract
Introduction
Out-of-hospital cardiac arrest (OHCA) is common among females and males alike; however,
previous studies reported differences in outcomes between sexes in different regions.
To investigate possible explanations for this disparity, we examined sex differences
in resuscitation interventions in the province of British Columbia (BC).
Methods
We performed an observational analysis of the BC Cardiac Arrest Registry (2011–16).
We included adults with non-traumatic and EMS-treated OHCA. We examined sex differences
in bystander CPR, chest compression rate, and intra-arrest transport using chi-square
tests, student’s t-test, multivariable linear and logistic regressions.
Results
In total, 7398 patients were eligible for the bystander CPR analysis; 31% were female.
More males received bystander CPR (54% vs. 50%); however, male sex was not associated
with bystander CPR after adjustment for confounders (adjusted OR male vs. female:
1.07, 95% CI 0.96, 1.18).
There was no difference in the chest compression rate for males and females in unadjusted
or adjusted analyses.
Among subjects who did not achieve prehospital ROSC (n = 5225, 32% females), 64% were
pronounced dead at the scene with the remaining transported to hospital. Males more
often underwent intra-arrest transport than females (36.7% vs. 34.0%). After adjustment,
males had 1.2 greater odds of being transported to hospital than females (95% CI 1.04,
1.37).
Conclusions
We did not detect an association between sex and bystander CPR or chest compression
rate. In those who did not achieve prehospital ROSC, males had 1.2-fold greater odds
of being transported to hospital compared to females.
Keywords
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Article info
Publication history
Published online: January 24, 2020
Accepted:
January 14,
2020
Received in revised form:
December 28,
2019
Received:
October 2,
2019
Identification
Copyright
© 2020 Elsevier B.V. All rights reserved.
