Injections cannot be given by which route

RRB Staff Nurse Jaipur-6th June 2018

Pharmacology

Easy

Appeared in: RRB Staff Nurse Jaipur-6th June 2018

Explanation

The question asks which route is NOT used for injections. Injections are a form of parenteral administration, meaning they bypass the gastrointestinal (GI) tract.
Intra-rectal and intra-oesophageal routes are part of the enteral system of administration, which utilizes the GI tract.
Medications administered via the rectum (e.g., suppositories, enemas) or oesophagus (oral medications) are absorbed through the digestive system, not injected with a needle.
Therefore, these routes are fundamentally different from injection routes.

Option A: Intraosseous (IO) is a valid, though less common, route for injections.
Option B: Intradermal (ID) is a standard injection route.
Option D: Intravenous (IV) is one of the most common and important routes for injections.

Visual 1: Diagram: Illustration showing the different angles and tissue layers for Intradermal (ID), Subcutaneous (SC), Intramuscular (IM), and Intravenous (IV) injections. This helps visualize the key differences between the parenteral routes.
Visual 2: Table: A comparative table of enteral vs. parenteral routes of administration, listing examples, advantages, and disadvantages of each.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Routes of Drug Administration as background academic context rather than a clinical decision trigger.
Understanding the correct route of administration is a fundamental responsibility for nurses to ensure patient safety and medication efficacy. Administering a drug via the wrong route can lead to therapeutic failure, adverse reactions, or even death.
The choice of route depends on the drug's properties, the desired speed of onset, and the patient's condition. For example, emergency drugs are often given IV for the fastest effect, while vaccines are typically given IM for a slower, sustained immune response.
What if a drug intended for oral use was accidentally prepared for injection? This could be fatal. Many oral medications are not sterile and contain excipients that could cause severe tissue damage, embolism, or systemic infection if injected.

How to Approach the Question

First, identify the key term in the question: 'injections'. Recall that an injection is a method of parenteral administration, meaning it bypasses the digestive system.
Next, analyze the lead-in phrase 'cannot be given'. This indicates you are looking for the option that is NOT a valid injection route.
Evaluate each option against the definition of an injection:
Is 'Intra osseous' an injection? Yes, into the bone.
Is 'Intra dermal' an injection? Yes, into the skin.
Is 'Intra rectal or intra oesophageal' an injection? No, these are parts of the digestive (enteral) tract.

Concept Tested & Keywords

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