Читать книгу Manual of Equine Anesthesia and Analgesia - Группа авторов - Страница 149

 Horses have a high incidence of arrhythmias compared to other domestic animals and this is due to their high degree of vagal tone.

  Physiologic arrhythmias usually resolve during exercise or excitement when there is an increase in sympathetic tone and/or a decrease in vagal stimulation.

 Conversely, some arrhythmias may be exacerbated by exercise.