[Method and results of the study of excursion of peripheral arterial (precapillary) walls]

A photoelectric method was employed for examining excursion of peripheral arterial vessels (precapillaries) walls in the middle of the first phalanx of the forefinger of man. The magnitude of the mean amplitude of walls excursion was found to be equal to about 18.5 microns. It is concluded that the shape and amplitude of the curve obtained may serve the basis for estimating the tone of the precapillaries, the time of the volume increase/decrease, and the extent of vascular enlargement.