What does PRN stand for in medical terminology?

PRN stands for "as needed" in medical terminology, which indicates that a medication or treatment is to be administered only when necessary rather than on a scheduled basis. This designation allows healthcare providers to manage medications more flexibly, ensuring that patients receive interventions based on their specific needs at particular times rather than adhering to a strict dosing schedule.

For example, a medication might be prescribed PRN for pain relief, meaning the patient should take it only when they experience pain, rather than taking it at regular intervals regardless of whether they are in pain. This approach can enhance patient comfort and avoid unnecessary medication use.

The other options do not accurately represent the meaning of PRN. "As prescribed" implies a strict regimen that may or may not consider the patient's current condition, "every hour" defines a specific frequency for administration, and "immediately" suggests an urgent necessity which does not align with the flexibility that PRN offers. Understanding these distinctions is essential for proper medication management and patient care.