Why the study?
Does a social stressor (defeat) increase the incidence of arrhythmias and alter heart rate variability compared to a nonsocial challenge (restraint) in male wild-type rats?
Population
Male wild-type rats
Comparison
Social stressor (defeat) vs Nonsocial challenge (restraint)
Design
Preclinical
Authors
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Social stress may heighten arrhythmia risk via sympathetic activation in rats; leaves open translation to human stress-triggered arrhythmias.
Does a social stressor (defeat) increase the incidence of arrhythmias and alter heart rate variability compared to a nonsocial challenge (restraint) in male wild-type rats?
Social stress (defeat) induces higher sympathetic activation and lower parasympathetic antagonism than nonsocial stress, leading to a higher risk of ventricular arrhythmias in a rat model.
Sgoifo et al. (1997) studied this question.
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