Administration of medications into the body tissues other than alimentary canal is

KGMU 2024

Pharmacology

Easy

Appeared in: KGMU 2024

Explanation

The term 'parenteral' is derived from the Greek words 'para' (beyond) and 'enteron' (intestine), literally meaning administration outside of the digestive tract.
This route involves injecting medication directly into body tissues (subcutaneous, intramuscular, intradermal) or the bloodstream (intravenous), bypassing the alimentary canal entirely.
Parenteral administration ensures rapid onset of action and 100% bioavailability (for IV route) as it avoids the first-pass metabolism in the liver.

Option B: The oral route involves swallowing medication, which is then absorbed through the alimentary canal. This is the primary example of a route that is NOT parenteral.
Option C: Enteral administration refers to any route that utilizes the gastrointestinal (GI) tract. The question specifically asks for a route that is 'other than' the alimentary canal.
Option D: Inunction is the act of rubbing a medication (like an ointment) onto the skin. This is a topical route. While it bypasses the GI tract, 'parenteral' is the specific term for administration by injection into tissues.

Visual 1: Diagram: A diagram illustrating the different routes of drug administration, clearly separating Enteral (Oral, Rectal), Parenteral (IV, IM, SC, ID), and Topical (Skin, Inhalation) routes. This helps visualize how each route bypasses or utilizes different body systems.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Routes of Medication Administration as background academic context rather than a clinical decision trigger.
Understanding the difference between parenteral and enteral routes is fundamental for safe nursing practice. The choice of route affects the drug's onset of action, intensity, and duration.
Parenteral routes are critical in emergencies (e.g., administering epinephrine IV for anaphylaxis) when rapid action is required, or when patients are NPO (nothing by mouth), vomiting, or unconscious.
Nurses must use strict aseptic technique during parenteral administration to prevent introducing infection, a risk not associated with the enteral route.

How to Approach the Question

First, identify the key phrase in the question: 'other than alimentary canal'. This is the core of the definition you need to find.
Analyze the options based on this key phrase. 'Alimentary canal' refers to the digestive tract (mouth to anus).
Evaluate 'Oral' and 'Enteral'. Both clearly involve the digestive tract, so they can be eliminated.
Consider 'Parenteral'. Break down the word: 'par' (beyond) and 'enteral' (intestinal). This directly matches the question's requirement.
Evaluate 'Inunction'. This is a topical route (on the skin). While it's outside the alimentary canal, 'parenteral' is the broader and more common term for injections into tissues, which is the primary alternative to the enteral route.

Concept Tested & Keywords

Concept Tested: Routes of Medication Administration
Stem keywords: Administration of medications, body tissues, other than alimentary canal
Lead-in keywords: is

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