What is the main difference between a standing order and a PRN order?

• A. Standing orders authorize routine meds for a patient under predefined conditions.
• B. PRN orders are given as needed.
• C. Standing orders are for emergencies; PRN are routine.
• D. Standing orders require physician approval for every dose.

Answer: (C)

The main idea is how meds are authorized to be given without a new doctor’s order each time. Standing orders are pre-approved, protocol-based prescriptions that let staff administer certain medications automatically within predefined conditions and limits. This supports routine or preventive care by ensuring consistent treatment when the patient meets those criteria, without needing a fresh physician order for every dose. PRN orders, on the other hand, are medicines given only when the patient shows symptoms or when the clinician deems it necessary, and they are not administered on a fixed schedule; dosing and frequency are defined but the medication is given as needed. So standing orders are about routine care under agreed parameters, while PRN is about responding to symptoms as they arise. The idea that standing orders are only for emergencies isn’t accurate, and PRN isn’t automatically routine—it’s as-needed.