A medicines-record study distinguished as-needed prescriptions from recorded doses. Counting orders alone could overstate actual exposure during the reviewed month.
The study examined residents with dementia in fifty UK care homes. It compared PRN prescribing with recorded administration for pain and neuropsychiatric symptoms.
Only half of residents with a PRN benzodiazepine prescription received a recorded administration in the assessed period. Other medicine categories showed different patterns.
The cross-sectional month cannot show every earlier or later dose, and the study did not establish why each medicine was used or withheld. Administration frequency does not alone determine appropriateness.
The findings support examining both standing orders and the administration record. They cannot establish that every PRN prescription caused sedation or that every unadministered order was unnecessary. In forensic review, retain indication, trigger criteria, actual doses, response, and record completeness rather than substituting a prescription list for a confirmed exposure history.
Original analysis of the supplied journal article, identified as PMC6800850.