We use the pressure equation to explain the pressure points padded theory. Explain why it's important to pad these areas.
Part resting on bed is generating force then if you do out the pressure formula calculation, get a certain pressure (ex: 147mmHg)
Inanesthesia, BP decreases. Easy for BP to drop below 147mmHg, so a patient in position w/poor padding, can end up w/ischemic extremities.
Ischemia optic neuropathy for patients in head down position (prone), if the pressure generated enough to offset the pressure of circulation to optic nerve , patient can be blind after surgery