What is the correct term for the delivery of a medication through the rectum?

The delivery of medication through the rectum is referred to as "PR," which stands for "per rectum." This method of administration is often used when oral delivery of medication is not feasible, such as when a patient is vomiting, unconscious, or unable to swallow. Rectal administration allows for rapid absorption of the medication into the bloodstream, making it an effective route for certain medications, especially those intended for systemic effects.

Other options refer to different routes of medication administration. "SL" indicates sublingual delivery, which involves placing medication under the tongue for absorption. "PO" denotes oral administration, where medications are taken by mouth and swallowed. "OU" stands for "oculus uterque," meaning both eyes, typically used in the context of eye medications. Each of these routes serves specific purposes, with "PR" being the correct terminology for rectal administration.