Key result
Acute myocardial infarction significantly depressed ventricular fibrillation frequency characteristics compared with controls (p < .001), making them unsuitable surrogates for fibrillation duration.
Why the study?
Does acute myocardial infarction alter the frequency content of ventricular fibrillation compared to controls without coronary obstruction?
Population
27 swine
Comparison
Induction of acute myocardial infarction by… vs Control swine without coronary obstruction…
Design
Preclinical
Authors
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Questions VF frequency as duration surrogate in AMI; hypothesis-generating for human AED algorithm validation.
Does acute myocardial infarction alter the frequency content of ventricular fibrillation compared to controls without coronary obstruction?
p-value: p=< .001
Acute myocardial infarction significantly alters the frequency content of ventricular fibrillation, suggesting these waveform characteristics are not reliable surrogates for VF duration in automated external defibrillators.
Indik et al. (2007) studied Acute myocardial infarction and ventricular fibrillation (n=27). Induced acute myocardial infarction (mid-left anterior descending artery occlusion) vs. Control (no coronary obstruction) was evaluated on Ventricular fibrillation waveform frequency characteristics (mean, median, dominant frequency, bandwidth, and amplitude) (p=< .001). Acute myocardial infarction significantly depressed ventricular fibrillation frequency characteristics compared with controls (p < .001), making them unsuitable surrogates for fibrillation duration.