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Effect of Alcohol On the Atrial Fibrillation Threshold in Dogs

Department of Medicine, College of Medicine and Dentistry of New Jessey, Rutgers Medical School, Piscataway, New Jersey

M. Jay Goodkind

Department of Medicine, College of Medicine and Dentistry of New Jessey, Rutgers Medical School, Piscataway, New Jersey

H. Skvaza

Department of Medicine, College of Medicine and Dentistry of New Jessey, Rutgers Medical School, Piscataway, New Jersey

Norris H. Gerber, JR

Department of Medicine, College of Medicine and Dentistry of New Jessey, Rutgers Medical School, Piscataway, New Jersey

Peter T. Kuo

Department of Medicine, College of Medicine and Dentistry of New Jessey, Rutgers Medical School, Piscataway, New Jersey

The atrial fibrillation threshold was measured in 10 anesthetized dogs by delivering a series of impulses directly to the right atrium after infusion of 4.5 ml of 5% glucose per kilogram of body weight, and after 1.5 ml of absolute alcohol per kilogram in 3 ml/kg of 5% glucose. There were no changes in the atrial fibrillation threshold after glucose. The mean AFT before alcohol was 6.8 volts. Immediately after alcohol infusion, the arterial blood alcohol concentration (BAC) was 300.7 mg/100 ml, and the AFT increased to 9.75 volts (P < 0.01); 20 minutes later the BAC was 181.2 mg/100 ml and the AFT 8.5 (P < 0.02). There was no rebound decrease in AFT up to 65 minutes. The findings suggest that in anesthe tized normal dogs, alcohol may have a direct mild antiarrhythmic effect on the atria. Atrial fibrillation in alcoholics may be due to alcohol indirectly through electrolyte, autonomic, or histologic changes.

Angiology, Vol. 28, No. 9, 583-587 (1977)
DOI: 10.1177/000331977702800902


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