[The electrical field of the heart in rats with spontaneous hypertension].
The body surface potential of the SHR rats' heart was differently distributed both at the beginning of ventricular activity and during the repolarization in 4- to 6-week- and in 8- to 11-month-old rats. The positive extreme moved cranially to the right in 4-6-week rats and cranially to the left in 8- to 11-month-old rats thus suggesting a predominance of the right ventricle function in young rats and the left ventricle hypertrophy in older ones. The primary character of the right ventricle hyperfunction in young rats SHR is considered as the 1st phase of the cardiovascular system response to genetically determined increase in the arterial pressure.
Aging↗