Cardiac arrest & resuscitation
Automated external defibrillator electrode size and termination of ventricular fibrillation in out-of-hospital cardiac arrest
Main finding · VF termination by a single 200-J shockResult — go to the resultDifference 3% 95% CI −3% −9%Authors' conclusion
For AEDs with impedance-compensating BTE waveforms, TTI was higher for smaller electrodes than the large electrode electrodes. Overall defibrillation shock success for AEDs with smaller electrodes was non-inferior to the AEDs with larger electrodes.
Study context
- Population
- OHCA patients with an initial shockable rhythm treated by Amsterdam police and firefighters with automated external defibrillator (AEDs)
- Participants
- 157 vs 178
- Exposure
- Smaller vs larger AED electrodes
- Large electrodesn = 157reference
- Small electrodesn = 178
- Outcome
- First-shock defibrillation success (single 200-J shock terminating ventricular fibrillation (VF))
Methodological detailsnon-inferiority
- Non-inferiority
Main finding
VF termination by a single 200-J shock
Difference
3%
95% CI −3% −9%
By group
As reported in the abstract
Observational data: associations, not effects.
Further findings
| Outcome | P value |
|---|---|
| Transthoracic impedance (TTI)TTI significantly higher with smaller electrodes | P < 0.001 |
Parts of this Brief are withheld: the automatic checks could not confirm them against the abstract.
Original publication
Automated external defibrillator electrode size and termination of ventricular fibrillation in out-of-hospital cardiac arrest. Resuscitation. Published 25 February 2023. doi:10.
Composed by AI from the published abstract and checked against it. How Briefs are made →