Abstract
The application of a pressure as high as -30 mm Hg for 10 minutes in one arm caused no change in the time duration and curve of blood coagulation. But the application of a pressure as high as -65 mm Hg for 7 minutes caused a shortening in the time duration of blood coagulation, especially in its second phase. In other words, the ascending branch of the curve of blood coagulation increased the inclination. On the 10th minute after the release from the application, the time duration and curve of blood coagulation were almost restored to the conditions before the application of pressure.
