What does the abbreviation "PR" signify in medication administration?

The abbreviation "PR" signifies "per rectum" in medication administration. This term is used to indicate that a medication is to be administered via the rectal route. Rectal administration can be useful for patients who may have difficulty swallowing pills or are vomiting, as it allows for the medication to be absorbed directly into the bloodstream through the rectal mucosa. This route is often employed for both liquid and suppository forms of medication, especially for certain types of treatments, like fever reduction or localized medications.

Understanding the route of administration is crucial as it influences the onset of action, the bioavailability of the drug, and overall patient care. This knowledge ensures healthcare providers can select the most effective method for delivering medication based on the patient’s needs and condition.