Influence of Intraventricular Catheters on Course of Immersion Hypothermia in Dog

Publisher Website
Google Scholar
Abstract
The presence of intraventricular catheters in hypothermic dogs consistently caused ectopic rhythms and ventricular fibrillation. Control dogs exhibited this phenomenon much less frequently and survived to a lower mean temp. The catheter effect was not altered by admn. of 100% O2 during spontaneous or artificial respiration, nor by pretreatment with intraven. procaine (20 mg./kg.), or a specific adrenergic blocking drug. These results obviate the authors previously stated hypothesis that the abnormal rhythms were due to cardiac hypoxia.
Keywords