Colorado QMAP Practice Exam

What does "PO" signify in a medication context?

1. Subcutaneously

2. Intravenously

3. By mouth

4. Inhalation

The correct answer is: By mouth

In a medication context, "PO" stands for "per os," which is a Latin term meaning "by mouth." This designation indicates that the medication is to be taken orally, allowing it to be absorbed through the digestive system. This route is commonly used for many types of medications, including tablets, capsules, and liquids, as it is often the most convenient and easiest method for patients to administer. Other methods of administration like subcutaneously refer to injections beneath the skin, intravenously implies delivery directly into the bloodstream, and inhalation involves breathing in medication through the lungs. Each of these methods has its specific use cases and protocols, but "PO" specifically indicates oral intake. Understanding these terminology distinctions is essential for ensuring proper medication administration and patient safety in caregiving.