p.r.n.


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p.r.n.

abbr. Latin
pro re nata (as the situation demands; as needed)
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
References in periodicals archive ?
In his clinical opinion, the inpatient use of a haloperidol p.r.n. regimen often is unsound and unsafe.
The hypnosis group used hypnosis as primary treatment for nausea and vomiting, using antiemetic medication on a supplemental (p.r.n.) basis only, whereas the control group received a standardized antiemetic medication regimen.
One US study has suggested that the number of medications administered to a resident is about half of the medications prescribed [1], reflecting the high frequency of prescription on an `as needed' [pro re nata (p.r.n.)] or discretionary basis.
Once satisfactory analgesia is achieved, patients generally require less analgesia than when it is administered by P.R.N. intramuscular dosing.
"Awakening during the night with difficulty falling back to sleep is a prevalent condition, and a p.r.n. treatment for this is needed as it may decrease overall drug exposure," said the study's coinvestigator, Thomas Roth, Ph.D., of Henry Ford Hospital, Detroit.