Cardiac arrest & resuscitation
A two-point strategy to clarify prognosis in >80 year olds experiencing out of hospital cardiac arrest
Authors' conclusion
Elderly OHCA rates have increased to one-third of caseload. The most important factors predicting survival were whether the OHCA was witnessed and there was a shockable rhythm.
Study context
- Population
- Patients aged ≥80 years with out-of-hospital cardiac arrest (OHCA), Victorian Ambulance Cardiac Arrest Registry, 2002–2021registry cohort, 2002–2021
- Participants
- 18,956 / 6,148 / 209
- Exposure
- 80-90 years vs 90-100 years vs >100 years
- 80-90 yearsn = 18,956
- 90-100 yearsn = 6,148
- >100 yearsn = 209
- Outcome
- Survival to discharge
Methodological detailsprognostic score derivation
- Prognostic score derivation
Main finding
As reported in the abstract
Survived to discharge, without change over time
619
2.4%
Witnessed OHCA and shockable rhythm
14%
One factor present
5-6%
Neither factor present
0.09%
Observational data: associations, not effects.
Further findings
Shockable rhythm by age
| OR (95% CI) | ||
|---|---|---|
| 90-100 yearsAs printed: for 90-100-year-olds · older ages less likely to have shockable rhythm | 0.50 (0.44–0.57) | |
| 90-100 yearsOlder ages less likely to have shockable rhythm | 0.28 (0.12–0.63) | |
| 0.10.31310Odds ratio (log scale) |
- Shockable rhythm by age: as printed: for 90-100-year-olds (label repeated in abstract)
Number of OHCA patients ≥80 years over time
- Increased absolutely
- P = 0.002
- Increased proportionally
- P = 0.028
Witnessed OHCA by age
- No difference in witnessed OHCA status at older ages
Original publication
A two-point strategy to clarify prognosis in >80 year olds experiencing out of hospital cardiac arrest. Resuscitation. Published 6 September 2023. doi:10.
Composed by AI from the published abstract and checked against it. How Briefs are made →