Out of the following, which medicines are used for intestinal evacuation?

Appeared in: RRB Staff Nurse Delhi-2015

Explanation

Cathartics are medications specifically designed to accelerate defecation, leading to intestinal evacuation.
They are more potent than laxatives and are frequently used to completely empty the colon before medical procedures, such as a colonoscopy or abdominal surgery.
Their mechanisms of action include stimulating intestinal motility (stimulant cathartics) or drawing water into the bowels to soften stool and increase pressure (osmotic cathartics).

Option B: Carminatives are agents that relieve flatulence by helping to expel gas from the stomach and intestines; they do not induce bowel evacuation.
Option C: Astringents are substances that cause the contraction or shrinkage of tissues. They are used topically to reduce inflammation or stop minor bleeding, not for bowel evacuation.
Option D: Antimycotics are antifungal medications used to treat infections caused by fungi (mycoses). They have no primary effect on bowel motility or evacuation.

Visual 1: Table: Comparison of Gastrointestinal Agents. A table comparing Cathartics, Carminatives, Astringents, and Antimycotics based on their primary function and clinical use. This helps to visually differentiate the roles of these distinct drug classes.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Pharmacology of Gastrointestinal Agents as background academic context rather than a clinical decision trigger.
Nurses must understand the distinction between laxatives (milder, for constipation) and cathartics (stronger, for complete evacuation) to administer them safely and manage patient expectations.
Before administering a cathartic, a nurse must perform a thorough assessment, including checking for a bowel obstruction, assessing the patient's hydration status, and reviewing recent electrolyte levels, as cathartics can cause significant fluid shifts.
Patient education is crucial. Nurses should advise patients that cathartics are for short-term use only and that chronic use can lead to dependence and serious electrolyte imbalances.

How to Approach the Question

First, identify the key action requested in the question stem, which is 'intestinal evacuation'.
Next, systematically review each option and define its primary pharmacological function.
Define Cathartics: Agents that promote defecation.
Define Carminatives: Agents that relieve gas.
Define Astringents: Agents that constrict tissues.
Define Antimycotics: Agents that treat fungal infections.

Concept Tested & Keywords

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Practise the full RRB Staff Nurse Delhi-2015

Attempt every question from this paper in a timed mock, then review the full solution for each one.