The effect of ascorbic acid supplementation and acclimatization to cold on the electrocardiogram of the guinea pig exposed to cold

摘要

Guinea pigs were exposed until death in a cold chamber kept a 4 to 5°C. Some of the guinea pigs were previously acclimatized to 22°C and to 8°C respectively. Some were given vitamin supplements of 30 or 300 mg per kg ascorbic acid, others were given no vitamin supplement. Electrocardiograms were taken for all animals exposed. Measurements of the various intervals on the electrocardiograms including the heart rate indicated that the various treatments had no effect on the response of the heart to the cold. Further analysis of the data will be the subject of an additional report.