A table of values is presented for the electrocardiogram of the average normal laboratory dog; trained, un-anesthetized, and in the supine position, based on data from 62 tracings on 30 dogs. 2. Data obtained from 10 serial tracings on each of 3 dogs indicates a variation within the same animal not significantly different from that obtaining among different animals. 3. It is recommended that to establish the normal electrocardiogram of a dog a mean of 3 tracings taken at different times be used to reduce the effect of the occasional extreme value.
No takes yet. Share an insight, caveat, or question.
Horwitz et al. (1953) studied this question.