Beyond the Darrow-Yannet diagram: an enhanced plot for body fluid spaces and osmolality.

Abstract

The C-plot is a new method of plotting the volumes and osmolality of extracellular and intracellular body fluids, which in many circumstances is an improvement on the classical Darrow-Yannet diagram. The C-plot allows natural perturbations to be seen easily, and enables the relation between threats to fluid homoeostasis and the physiological mechanisms that counter those threats to be appreciated. The course of such events can also be shown in a single diagram.