Transcapillary fluid movement in human calf after water drinking.

The transcapillary fluid movement, induced by drinking a large amount of water, is known to lead to an increase in the extravascular fluid volume of tissues such as the muscle and the skin". The mechanism underlying this phenomenon, however, is poorly understood. The purpose of the present study was to know the nature and strength of the driving f orce which operates in such a fluid movement. The rate of capillary filtration was measured in the human calf by means of a pressure plethysmograph2),3),4), and the capillary filtration coefficient (CFC) and the effective filtration pressure were estimated.