Benzimidazole used in treatment of parasitic infections is:

AIIMS Jodhpur SNO-2023

Pharmacology

Easy

Appeared in: AIIMS Jodhpur SNO-2023

Explanation

Benzimidazoles are a major class of drugs used to treat infections caused by parasitic worms, also known as helminths.
They are termed 'broad-spectrum' because they are effective against a wide variety of helminths, including nematodes (roundworms) and cestodes (tapeworms).
Their primary mechanism of action is to inhibit microtubule synthesis in the parasite by binding to beta-tubulin. This disrupts essential cellular functions like glucose uptake, leading to the parasite's death.
Common examples include albendazole and mebendazole, which are staples in treating worm infestations.

Option A: Antifungal drugs (e.g., fluconazole, amphotericin B) are used to treat infections caused by fungi, not parasitic worms (helminths).
Option B: This option is incorrect because a correct and specific classification for benzimidazoles is provided among the choices.
Option C: Antibiotics (e.g., penicillin, tetracycline) are used to treat bacterial infections. They have no efficacy against helminths.

Visual 1: Diagram: An illustration showing how benzimidazole binds to the tubulin in a worm's intestinal cell, preventing the formation of microtubules and blocking glucose absorption, leading to cell death.
Visual 2: Chart: A comparative chart of different anthelmintic classes (Benzimidazoles, Praziquantel, Ivermectin) and the types of worms they target.

Clinical Relevance

Nursing practice connection: Knowing Pharmacological classification of antiparasitic drugs helps nurses interpret findings accurately and avoid errors in routine assessment, medication administration, and patient teaching.
Correctly identifying drug classes is fundamental to safe nursing practice. Administering an anthelmintic for a bacterial or fungal infection would be ineffective and delay appropriate care, potentially leading to worsening of the patient's condition.
Patient education is a key nursing role. When administering drugs like albendazole, nurses must educate patients on the importance of completing the course and potential side effects, such as gastrointestinal discomfort.
What if the patient had a severe bacterial infection but was mistakenly given an anthelmintic? The bacterial infection would continue to proliferate, leading to potential complications like sepsis, while the patient might suffer unnecessary side effects from the wrong medication.

How to Approach the Question

First, identify the key term in the question: 'Benzimidazole'.
Recall or determine the primary therapeutic use of this drug class. The question specifies its use is for 'parasitic infections'.
Analyze the options provided. Each option represents a different class of antimicrobial agent.
Define each option: 'antifungal' (for fungi), 'antibiotic' (for bacteria), and 'anthelmintics' (for helminths/worms).
Match the known use of Benzimidazole (treating parasitic worms) with the correct definition. This leads to 'anthelmintics'.
The term 'broad-spectrum' indicates it works on many types of worms, which is a known characteristic of this drug class.

Concept Tested & Keywords

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