Applied Physics and Physiology: The Nurse’s Guide to Defending the Body’s Systems

Welcome to the bedside! Let’s get something straight right from the beginning: nursing is not just about compassion. Compassion is your engine, but your daily practice? That is applied physics, fluid dynamics, and biological engineering.

When you stand in front of a client, you are looking at a brilliantly complex, highly pressurized system of pipes, pumps, and protective envelopes. When this system breaks down, we face three massive enemies: fluid going down the wrong pipe (aspiration), the breakdown of the protective envelope (tissue ischemia), and the failure of the delivery pipes (poor perfusion).

Let’s pull these concepts apart, see exactly how they work, and look at how we, as clinicians, manipulate physics and biology to keep our clients safe.