Key result
Ethanol reduces developed pressure and abolishes electrical activity at 6% in isolated rat hearts.
Why the study?
The acute metabolic, functional, and electrical effects of ethanol on the isolated rat heart were not fully characterized.
Does ethanol affect contractile, metabolic, and electrophysiologic function in isolated rat hearts?
Does ethanol affect contractile, metabolic, and electrophysiologic function in isolated rat hearts?
Acute ethanol exposure depresses myocardial contractility and electrical activity in isolated rat hearts through sarcolemmal effects and decreased myofilament calcium sensitivity, rather than metabolic changes.
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Ethanol impairs isolated rat heart function independently of metabolism; leaves open relevance to human in vivo exposure.
Schulman et al. (1991) studied this question. Ethanol vs. Ethanol-free solution was evaluated on Metabolic, functional and electrical effects (developed pressure, ATP, PCr, Pi, pH, electrical activity). Ethanol caused a concentration-dependent decline in developed pressure and abolition of electrical activity at 6% without changing energy metabolism or cellular pH in isolated rat hearts.
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