Temporal trends in the incidence, characteristics and outcomes of hanging-related out-of-hospital cardiac arrest

Saeed Alqahtani, Ziad Nehme, Brett Williams, Stephen Bernard, Karen Smith
Prehospital Emergency Care 2019 September 12, : 1-13
Aim: To describe temporal trends in the incidence, characteristics and outcomes of hanging-related out-of-hospital cardiac arrest (OHCA). Method: A retrospective study of all hanging-related OHCA in Victoria, Australia, between 2000 and 2017 was conducted. Trends in incidence, characteristics and outcomes were assessed using linear regression and a non-parametric test for trend, as appropriate. Predictors of survival to hospital discharge were identified using multivariable logistic regression. Results: Between 2000 and 2017, emergency medical services (EMS)-attended 3891 cases of hanging-related OHCA, of which 876 cases (23%) received an attempted resuscitation. The overall incidence rate of EMS-attended cases was 3.8 cases per 100,000 person-years increasing from 2.3 cases per 100,000 person-years in 2000 to 4.7 cases in 2017 (p for trend <0.001). Incidence rates increased approximately two-fold in young adults (18-44 years) and three-fold in middle aged adults (45-64 years). Despite improvement in the rate of bystander cardiopulmonary resuscitation (from 49% in 2000-05 to 75% in 2012-17), the survival to hospital discharge rate remained unchanged (3% overall). Among adult survivors with 12-month follow-up, 10 of 14 patients survived to 12 months post-arrest (71%). Five patients responded to telephone interviews, of which three patients reported severe functional disability. An initial shockable rhythm (OR 23.17, 95% CI: 5.75, 93.36) or pulseless electrical activity (OR 13.14, 95% CI: 4.79, 36.03) were associated with survival. Conclusion: The incidence of hanging-related OHCA doubled over the 18 year period with no change to survival rates. New preventative strategies are needed to reduce the community burden of these events.


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