What does lb/in² or psi stand for?

The term lb/in² or psi stands for pounds per square inch. This unit of measurement indicates the amount of pressure exerted by a force of one pound applied to an area of one square inch. It is commonly used in various fields, including medical gas administration, to quantify pressure levels of gases, ensuring safe and effective delivery. Understanding this measure is crucial for healthcare professionals who work with systems that involve compressed gases, as it helps them monitor and manage the pressures at which these gases are stored and utilized. Recognizing that psi represents pressure—and being familiar with its appropriate applications—empowers practitioners to maintain safety standards and improve patient care.