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Rectal administration (colloquially known as boofing or plugging) uses the rectum as a route of administration for medication and other fluids, which are absorbed by the rectum's blood vessels, [Note 1] and flow into the body's circulatory system, which distributes the drug to the body's organs and bodily systems.
Medications delivered to the distal one-third of the rectum at least partially avoid the "first pass effect" through the liver, which allows for greater bio-availability of many medications than that of the oral route. Rectal mucosa is highly vascularized tissue that allows for rapid and effective absorption of medications. [15]
Methods of administration include oral, sublingual (dissolving the drug under the tongue), and rectal. Parenteral administration is via a peripheral or central vein. [1] In pharmacology, the route of drug administration is important because it affects drug metabolism, drug clearance, and thus dosage. The term is from Greek enteros 'intestine'.
The Macy Catheter is a specialized catheter designed to provide comfortable and discreet administration of ongoing medications via the rectal route. The catheter was developed to make rectal access more practical and provide a way to deliver and retain liquid formulations in the distal rectum so that health practitioners can leverage the established benefits of rectal administration.
Alternative routes of administration, such as insufflation, rectal administration, [7] [8] intravenous, intramuscular, inhalational aerosol, transdermal, or sublingual, avoid or partially avoid the first pass effect because they allow drugs to be absorbed directly into the systemic circulation. [9]
Drug delivery is a concept heavily integrated with dosage form and route of administration, the latter sometimes being considered part of the definition. [9] While route of administration is often used interchangeably with drug delivery, the two are separate concepts.
Next, thrust in an inward and upward motion on the diaphragm. This will force air out of the lungs and remove the blockage. Repeat these abdominal thrusts up to five times, the doctor advised.
Rectal suppositories are intended for localized or systemic action to relieve pain, constipation, irritation, inflammation, nausea and vomiting, fever, migraines, allergies, and sedation. [7] [8] If they cause inflammation, chronic use of suppositories may cause rectal stricture, [9] but overall this is a safe method of drug delivery. [10]
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