What does p.o. [Lat.: per os, per orem] mean? - Definition of p.o. [Lat.: per os, per orem] - p.o. [Lat.: per os, per orem] stands for by mouth. By AcronymsAndSlang.com
The Dysphagia in Stroke Protocol. CRT, cough reflex test; NPO, nil per orem | Download Scientific Diagram