What does the abbreviation 'PRN' stand for in medical terminology?

The abbreviation 'PRN' in medical terminology stands for "pro re nata," which is a Latin phrase meaning "as needed" or "as the situation arises." This term is typically used in healthcare settings to refer to medications or treatments that are administered only when necessary, rather than on a scheduled basis. For example, a patient may be prescribed pain medication to be taken PRN, allowing them to take it when they feel discomfort rather than at fixed intervals. Understanding this term is essential for health unit coordinators and other healthcare professionals to ensure that patients receive the appropriate care tailored to their specific needs at any given time.