PRN protocol
Also written as: PRN — pro re nata (as needed)
Standardized guidelines for administering as-needed medications, including assessment criteria, documentation requirements, and monitoring procedures.
Full Definition
A PRN protocol establishes evidence-based criteria for when as-needed medications should be offered, administered, and monitored. These protocols specify target symptoms, rating scales to be used, time intervals between doses, maximum daily limits, and required documentation. Effective PRN protocols reduce subjective decision-making, ensure consistent care across shifts, and minimize overuse of psychotropic medications. They must address alternatives to medication, environmental interventions to try first, and specific contraindications or warnings for each medication class.
Usage
Usage note: PRN is Latin for 'pro re nata' meaning 'as needed.' Always distinguish between PRN protocols (the guidelines) and PRN medications (the actual drugs).
In Context
- "The PRN protocol requires a CIWA score of 8 or higher before administering anti-anxiety medication." — Nursing policy manual
- "Nursing staff must document alternative interventions attempted before following the PRN protocol." — Quality assurance review