Demerol 75 mg, IM every 4 hours, as needed for severe pain, is what type of medication order?

The medication order for Demerol 75 mg, IM every 4 hours, as needed for severe pain, is classified as a PRN order. PRN stands for "pro re nata," a Latin term meaning "as needed." This indicates that the medication is not scheduled for regular administration but is given only when the patient requires it, in this case, for severe pain.

The specification of administering it every 4 hours suggests a guideline for frequency, but since it is contingent upon the patient's pain level and requires their need for the medication (rather than being given at set intervals regardless of the patient's condition), it firmly falls under the PRN designation. This allows flexibility in pain management, ensuring that the patient receives relief when it is necessary without overmedicating.