P-wave body surface potential distribution in rats.
The aim of this study was to investigate body surface potential distribution during the P wave in Wistar rats. We performed body surface potential mapping by means of a 64-channel synchronous electrocardiotopography. The positive area covered the caudal part of the thorax, and the negative one covered the cranial part of the thorax. During the P wave, we observed 1 maximum and 1 minimum on the body surface. The dynamics of the P-wave body surface potential distribution in rats was characterized by minor movement of the positive and negative areas, and a counterclockwise shift of the extrema on the ventral body surface. The obtained results are discussed in comparison with those in dogs and humans.
Krandycheva
Valeria V
VV
Laboratory of Cardiac Physiology, Institute of Physiology of the Russian Academy of Sciences, Syktyvkar, Komi Republic.
Kharin
Sergey N
SN
Shmakov
Dmitry N
DN
D000200:Action Potentials; D000818:Animals; D018780:Body Surface Potential Mapping; D004285:Dogs / Q000502:physiology; D005260:Female; D006321:Heart / Q000502:physiology*; D006339:Heart Rate; D006801:Humans; D008297:Male; D051381:Rats; D017208:Rats, Wistar / Q000502:physiology*