[Electric instability of the hearts of animals with differing resistance to immobilization stress].
In 72 Wistar, August, SHR and non-linear rats, a reduction of thresholds for dysrhythmia and elongation of the cardiac cycle vulnerable phase occurred indicating obvious functional shifts following the immobilization stress. The Wistar rats revealed a greater resistance as compared to other rats: no changes of the vulnerable phase duration occurred in 80% and no difference whatever was observed in the remaining 20% of the Wistar rats. In dysrhythmia--prone animals the respective thresholds decreased most sharply and fibrillation of ventricles was mostly irreversible.
D000222:Adaptation, Physiological; D000818:Animals; D001794:Blood Pressure; D004198:Disease Susceptibility; D004562:Electrocardiography; D006321:Heart / Q000503:physiopathology*; D008297:Male; D051381:Rats; D011918:Rats, Inbred SHR; D011919:Rats, Inbred Strains; D013045:Species Specificity; D013315:Stress, Psychological / Q000503:physiopathology*
Elektricheskaia nestabil'nost' serdtsa u zhivotnykh s razlichnoĭ ustoĭchivost'iu k immobilizatsionnomu stressu.