Influence of posture changes on oncotic pressure and RHE proteinaemia

Abstract

Variations in proteinaemia levels in healthy man from posture changes or from physical exercise, as well as their chemical and physical consequences in plasma colloid-osmotic pressure, have been studied.Proteinaemia and oncotic pressure were measured in ten young males while lying flat, walking about, standing up motionless at attention and once again in a lying flat position.Proteinaemia and oncotic pressure increased on changing from a lying posture to orthostatism.The increase was much greater when the subjects were kept at rigid attention.Walking about did not produce any significant changes independently of the time factor.A significant correlation between changes in oncotic pressure and proteinaemia was always present.Changes in the oncotic pressure, however, were statistically more important.