Acute cardiac care & resuscitationCohort study
Short and long-term outcomes among patients with and without psychiatric disorders following out-of-hospital cardiac arrest
- Registry-based cohort study
- multiple logistic regression
- Utstein-defined subgroups
Authors' conclusion
Pre-existing psychiatric disorders are associated with lower odds of 30-day OHCA survival, primarily because of unfavorable pre-hospital factors, including limited bystander intervention.
Study context
- Population
- Adult patients with non-traumatic OHCA in the British Columbia Cardiac Arrest registry (2009–2016)OHCAs, 4438 (46%) had a pre-existing psychiatric disorder
- Participants
- 9,173 patients
- Exposure
- patients with psychiatric disorders compared with patients without psychiatric disorders
- Psychiatric disordersn = 4,438
Main finding
As reported in the abstract
Pre-hospital OHCA characteristics
Psychiatric disorders vs Without psychiatric disordersOR
OHCA in public locations
0.64(95% CI 0.57–0.73)
witnessed OHCA
0.75(CI 0.69–0.82)
bystander cardiopulmonary resuscitation
0.86(CI 0.79–0.95)
bystander applied AED
0.56(CI 0.41–0.77)
initial shockable rhythm
0.54(CI 0.49–0.61)
Observational data: associations, not effects.
Further findings
| Outcome | OR (CI) | |
|---|---|---|
| 30-day post-OHCA survival | 0.72 (0.63–0.82) | |
| 30-day survival, Utstein subgroups · 30 days — Psychiatric disorders vs Without psychiatric disorders | 1.04 (0.79–1.34) | |
| 30-day survival, Utstein subgroups · 30 days — Psychiatric disorders vs Without psychiatric disorders | 0.89 (0.70–1.13) | |
| 0.512Odds ratio (log scale) |
- 30-day survival, Utstein subgroups: bystander-witnessed OHCA who received cardiopulmonary resuscitation
- 30-day survival, Utstein subgroups: initial shockable rhythm who achieved return of spontaneous circulation upon hospital arrival
30-day survival, Utstein subgroups
- we did not detect an association between psychiatric disorders and 30-day survival
Original publication
Short and long-term outcomes among patients with and without psychiatric disorders following out-of-hospital cardiac arrest. Heart Rhythm. Published 5 May 2026. doi:10.1016/j.hrthm.2026.04.057
Summarised from the published abstract; every number is checked against it