Oxygen delivery model
Screenshot: oxygen cascade
Screenshot: oxygen content graph
This interactive physiological model is a useful teaching and learning aid - it can be used to illustrate many concepts in oxygen physiology, from simple things like the effect of hyperventilation or shunt on the oxygen cascade, to more complex phenomena like supply-dependent oxygen delivery kinetics in sepis or diffusion-limited oxygen uptake at extreme altitudes.
Click here to download the model
The user can enter physiological variables such as respiratory rate, FIO2, cardiac output, and the model then demonstrates the movement of oxygen around the body and produces a fairly accurate blood gas. It is 4Mb in size, and runs in Microsoft Excel 2003 or later.
It is freely available for use anywhere and I have had positive feedback from lecturers and tutors at universities all over the world. If you use this model for teaching or as part of a university or college course, please send me an email to let me at to let me know.
