THE EFFECT OF TEMPERATURE ON BLOOD COAGULATION TIME

Abstract

In the dog variation in the temperature of the blood, before it is withdrawn from the artery, between the limits of 25° C. and 45·1° C., does not appear to affect its coagulation time provided it is kept at a constant (25° C.) temperature afterwards. Prolonged etherisation does not affect the coagulation time appreciably. Changes in the temperature of the blood, after it is withdrawn from the body, produce a marked affect on its coagulation time. From 10° C. to about 40° C. the time is shortened as the temperature rises, and beyond this from 40° C. upwards, it is lengthened. At 55° C. or 56° C. the blood does not coagulate at all. © 1916 The Physiological Society