Route of administration for promethazine (Phenergan) Drug?

Appeared in: Central Institute of Psychiatry - 9 July 2022

Explanation

Promethazine (Phenergan) is a versatile medication available in multiple formulations.
It can be administered orally (tablets/syrup), via deep intramuscular (IM) injection, and intravenously (IV).
Since all three routes listed in the options are valid methods of administration, 'All of the above' is the correct and most comprehensive answer.
The drug is also available as a rectal suppository, further highlighting its multiple routes of delivery.

Option A: This is incorrect because while promethazine can be given orally, it is not the only route of administration. This option is incomplete.
Option B: This is incorrect because although the IM route is the preferred parenteral route, it is not the only available route. Oral and IV routes also exist.
Option C: This is incorrect because while IV administration is possible, it is not the sole route. Oral and IM routes are also used, and IV is generally not preferred due to safety risks.

Clinical Relevance

Nursing practice connection: Knowing Routes of Administration for Promethazine (Phenergan) helps nurses interpret findings accurately and avoid errors in routine assessment, medication administration, and patient teaching.
A nurse's primary responsibility includes knowing the correct route, dosage, and potential adverse effects of every medication administered. For promethazine, understanding the high risk associated with IV administration is critical for patient safety.
Patient education is crucial. If IV promethazine is given, the nurse must instruct the patient to immediately report any pain, burning, or discomfort at the infusion site.
What if? If a patient requires rapid antiemetic relief but has poor peripheral venous access, the nurse should advocate for the deep IM route. It provides a faster onset than oral administration and avoids the significant risks of attempting IV administration in a compromised vein.

How to Approach the Question

First, identify the core of the question, which asks for the possible routes of administration for the drug promethazine (Phenergan).
Recall or look up the available formulations for this specific drug.
Evaluate each option individually: Can promethazine be given orally? Yes. Can it be given via IM injection? Yes. Can it be given intravenously? Yes.
Since options A, B, and C are all valid routes, the most accurate and complete answer is D, 'All of the above'.
Always consider if an 'All of the above' option is plausible when a question asks about a topic with multiple facets, like drug administration routes.

Concept Tested & Keywords

Q11VtZ4NdrLTvuvGii1M8E

E6 Pharmacology Nursing Lilley 11e Part 3 pp. 187-189, 189-191, 190-192

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