Key result
Using real-time waveform analysis to deliver shocks during high ventricular fibrillation voltage peaks increased the overall defibrillation success rate by 24% compared to random shocks (P < 0.04).
Why the study?
Does real-time VF waveform analysis to deliver shocks at high voltage peaks improve defibrillation success in a canine model?
Population
Open-chest canine model (n=8)
Comparison
Real-time ventricular fibrillation waveform… vs Conventional method of shocking at a fixed time
Design
Preclinical
Authors
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Should not yet change defibrillation practice; hypothesis-generating for voltage-peak timing and requires clinical trials.
Does real-time VF waveform analysis to deliver shocks at high voltage peaks improve defibrillation success in a canine model?
Effect estimate: 24% overall increase in success rate
p-value: p=< 0.04
Real-time analysis of VF waveforms to deliver shocks during high voltage peaks improves defibrillation success in a canine model, supporting the hypothesis of a critical period susceptible to defibrillation.
HSIA et al. (1996) studied Ventricular fibrillation (n=8). Real-time waveform analysis for peak shock delivery vs. Conventional method of shocking at a fixed time (random shock method) was evaluated on Defibrillation success rate (24% overall increase in success rate, p=< 0.04). Using real-time waveform analysis to deliver shocks during high ventricular fibrillation voltage peaks increased the overall defibrillation success rate by 24% compared to random shocks (P < 0.04).
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