Related Experiment Video
Updated: Jul 21, 2026

A Novel Approach for the Administration of Medications and Fluids in Emergency Scenarios and Settings
Published on: November 9, 2016
PRN Medication Administration in a Geriatric Psychiatric Hospital: Chart Review and Nursing Perspective
Lori Harper1, John R Reddon2, Courtney J Hunt3
1a Villa Caritas Hospital , Edmonton , Alberta , Canada.
Objective:
To improve patient care/outcome, an evaluation was conducted of nursing procedures and protocols for pro re nata (PRN) medications.
Methods:
A 14-day chart review was conducted for 27 patients with mood and thought disorders (MTD) and for 24 patients with organic disorders (OD) at a geriatric psychiatric hospital, and a questionnaire was completed by 20 nurses.
Results:
377 PRNs were administered to patients in the MTD and OD units (240 and 137, respectively). The majority of PRNs were administered during the evening shifts on the MTD unit and during the day shifts on the OD unit. Chart notes indicated the behavior requiring PRN administration was not always specifically described and therapeutic interventions were not often attempted before PRN administration. Inconsistency between chart notes and medication record books was noted in the majority of cases. It was often not known whether the PRN was initiated by the staff, patient, or family. PRNs were reported to be not effective in the majority of cases.
Conclusions:
Documentation was suboptimal and effectiveness was poor.
Clinical Implications:
It would be worthwhile to train all staff in a patient-centered or ecopsychosocial (i.e., non-pharmacological) model of care, which would provide staff alternatives to PRNs. In that context, it would be important to implement standards of practice into geriatric psychiatry inpatient settings for PRN administration and documentation.
Related Concept Videos
Drug Dosing: Geriatric Patients
Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Absorption
Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Distribution
Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Excretion
Pharmacodynamics in Geriatric Patients: Effects of Age
Drug Therapy
Antianxiety Medications
