Introduction:
To assess the long-term functional recovery and health related quality-of-life (HRQoL) outcomes for out-of-hospital cardiac arrest (OHCA) survivors stratified by shock provider.
Methods:
We included adult OHCA in initial shockable rhythms between 2010-2019. Those surviving to 12 months post arrest were invited to participate in telephone interviews to identify functional recovery and HRQoL outcomes, using the following assessment tools, Glasgow Outcome Scale-Extended (GOS-E), EuroQol-5D (EQ-5D), and 12-Item Short Form (SF-12).
Results:
Of the 1,581 patients surviving to 12 months, 1,325 (85.5%) responded to the interviews, of these, 227 (17.1%) and 144 (10.9%) were initially shocked by bystanders and first responders, respectively. A higher proportion of patients shocked by bystanders were located in public (p<0.001), received bystander CPR (p<0.001) and received initial defibrillation faster from time of collapse (P<0.001). Survivors receiving bystander defibrillation reported higher rates of living at home without care (p=0.004), upper good recovery (GOS-E) (p=0.008) and EQ-5D index score of 1 (perfect health) (p=0.023). After adjustment, bystander defibrillation was associated with a 64% increase in the odds of an EQ-5D current Visual Analogue Scale ≥ 80 (AOR 1.64, 95%CI: 1.17-2.31; p=0.004) and a 45% increase in the odds of a good functional recovery (GOS-E ≥ 7) (AOR 1.45, 95% CI: 1.02-2.06; p=0.037), than those initially shocked by paramedics. No improvement in adjusted outcomes were observed for survivors initially defibrillated by first responders.
Conclusion:
Patients receiving bystander defibrillation reported better functional recovery and HRQol outcomes at 12 months compared to those defibrillated by first responders and paramedics.