Ethanol increases rate of isolated atria.
Ethanol has a positive chronotropic and negative inotropic effect on isolated spontaneously beating rabbit atria. Both effects increased with increasing ethanol concentrations in the bathing medium. This response is apparently a direct action of ethanol on the myocardium and is not due to the release of catecholamines, acetylcholine, or acetaldehyde produced by the oxidative metabolism of ethanol. Ethanol is one of the few pharmacologic agents having opposite actions on heart rate and force of contraction.
D000818:Animals; D001285:Atropine / Q000494:pharmacology; D004221:Disulfiram / Q000494:pharmacology; D004347:Drug Interactions; D000431:Ethanol / Q000494:pharmacology*; D005260:Female; D006339:Heart Rate / Q000187:drug effects*; D066298:In Vitro Techniques; D008297:Male; D009200:Myocardial Contraction / Q000187:drug effects; D011433:Propranolol / Q000494:pharmacology; D011720:Pyrazoles / Q000494:pharmacology; D011817:Rabbits; D013997:Time Factors
D011720:Pyrazoles; D000431:Ethanol; D001285:Atropine; D011433:Propranolol; D004221:Disulfiram