Acute cardiac care & resuscitationResearch article
Estimated survival gains from pulselessness-detection technologies in unwitnessed out-of-hospital cardiac arrest in Western Australia: a simulation study
- simulation study
- Counterfactual simulation modelling
Authors' conclusion
Even a modest uptake of wearable devices with pulselessness-detection technology could lead to a doubling in 30-day survival among unwitnessed OHCA.
Study context
- Population
- Emergency medical service (EMS)-attended, non-traumatic, bystander-witnessed and unwitnessed OHCAs in patients ≥16 years of age in Western Australia (WA), 1 July 2020–30 June 2025
- Participants
- 11,450 cases
- Comparison
- Unwitnessed OHCAs detected by a wearable device vs current survival
Main finding
As reported in the abstract
Additional 30-day survivors, 100% of unwitnessed cases converted to device-monitored, 100% sensor sensitivity · over 5 years
additional survivors
693 (95%CI: 538, 848)
survival among unwitnessed OHCAs
from 0.5% to 8.3%
Further findings
Additional 30-day survivors, 10% of unwitnessed cases converted to device-monitored, sensor sensitivity of 80% · over 5 years
- additional survivors
- 52 (95%CI: 8, 95)
- survival among unwitnessed arrests (doubling)
- from 0.5% to 1.1%
Original publication
Estimated survival gains from pulselessness-detection technologies in unwitnessed out-of-hospital cardiac arrest in Western Australia: a simulation study. Resuscitation. Published 25 May 2026. doi:10.1016/j.resuscitation.2026.111147
Summarised from the published abstract; every number is checked against it