[La description du rythme cardiaque et de l’ECG de quelques insectivores et rongeurs. The description of the cardiac rhythm and ECG of some insectivores and rodents].

Résumé

Cardiovascular responses the semi-aquatic and terrestrial species of insectivores and rodents were investigated in respect of the comparative cardiology. Different electrocardiographical techniques for the registration of ECG and the heart rate, among them the radiotelemetric ones, were used. Such techniques made possible some experiments on animals in free-behavior conditions. The heat rate and the breath rate were founded to be in inversely proportional dependence to the animals body mass. The elements of ECG in the leads from the extremities of the semi-aquatic species of insectivores and rodents are not high stable. The heart rate of insectivores is relatively stable, they have weak cardiac arrhythmies. The correct sinusoidal rhythm is characteristic for the semi-aquatic rodents. They are essentially free from the respiratory arrhythmia.