Bodnar Ia Ia, Zolenkova E G, Bodnar L P
Fiziol Zh (1978). 1990 Mar-Apr;36(2):84-8.
80 mongrel rats were studied for peculiarities of the heart activity regulation in dehydration, conditions of the vegetative homeostasis being different. Data of the variation pulsometry were used. A sympathetic shift of the vegetative homeostasis was a common dehydration-caused response. The shift was significant in rats with an initial equilibrium of the vegetative homeostasis and prevailing parasympathetic effects. The survival rate of this group of rats was high. In the group of rats with the initial prevalence of a sympathetic tonus a short-term sympathetic shift was replaced by an increase of parasympathetic effects. The survival rate of this group was much lower. Therefore, rats with initial prevalence of the sympathetic compartment tonus of the vegetative nervous system are more labile to the effect of the dehydration stress.
对80只杂种大鼠进行了研究，以观察在不同植物性稳态条件下脱水时心脏活动调节的特点。使用了变异脉搏测量法的数据。植物性稳态的交感神经偏移是脱水引起的常见反应。在植物性稳态初始平衡且副交感神经作用占主导的大鼠中，这种偏移很明显。这组大鼠的存活率很高。在初始交感神经张力占主导的大鼠组中，短期的交感神经偏移被副交感神经作用的增强所取代。这组大鼠的存活率要低得多。因此，植物神经系统交感神经节段张力初始占主导的大鼠对脱水应激的影响更不稳定。
