Результаты (
английский) 2:
[копия]Скопировано!
The heart is reduced to a state of rest with a frequency - 60-70 beats per minute.
The frequency of less than 60 - bradycardia, greater than 90 - tachycardia. The reduction of the heart muscle is characterized by a reduction in time: the atria - 0.1 seconds ventricular contractions - 0.3 seconds pause - 0, 4 seconds
переводится, пожалуйста, подождите..