Which of the following products is considered a lubricant laxative?
Magnesium Citrate
Mineral Oil
Polyethylene Glycol 3350
Psyllium
The Correct Answer is B
A. Magnesium Citrate: Magnesium citrate is an osmotic laxative. It works by drawing water into the intestinal lumen via osmotic pressure, softening stool and stimulating bowel movements. It does not coat or lubricate the stool.
B. Mineral Oil: Mineral oil is a lubricant laxative. It coats the stool and intestinal mucosa, reducing water absorption from the stool and allowing it to pass more easily. This mechanism eases defecation without significantly stimulating peristalsis, making it distinct from osmotic or bulk-forming agents.
C. Polyethylene Glycol 3350: Polyethylene glycol is an osmotic laxative that retains water in the stool through osmosis, increasing stool volume and promoting bowel movements. It does not provide lubrication or coat the stool.
D. Psyllium: Psyllium is a bulk-forming laxative. It absorbs water and expands in the intestine, increasing stool bulk and stimulating peristalsis. It does not function by lubricating the stool.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A. Coronavirus: Dextromethorphan does not treat viral infections such as coronavirus. While it may help manage a symptom like a cough, it has no antiviral properties or effect on the underlying infection.
B. Allergic rhinitis: Allergic rhinitis is primarily treated with antihistamines, intranasal corticosteroids, or decongestants. Dextromethorphan does not address nasal congestion, sneezing, or histamine-mediated symptoms.
C. Nonproductive cough: Dextromethorphan is an antitussive that suppresses the cough reflex, making it effective for dry, nonproductive coughs where coughing provides no benefit and causes discomfort or sleep disturbance.
D. Ineffective productive cough: In a productive cough, suppression with dextromethorphan is not recommended because coughing helps clear secretions from the airways. Using it in this situation could worsen airway obstruction or infection risk.
Correct Answer is B
Explanation
A. Rest, Incubation, Circulation, Elevation: “Incubation” is not a recognized component of musculoskeletal injury care. Circulation is important physiologically but is not part of the standard R.I.C.E. protocol.
B. Rest, Ice, Compression, Elevation: R.I.C.E. is the acronym for acute musculoskeletal injury management. Rest minimizes further tissue damage, ice induces vasoconstriction to reduce swelling and pain, compression limits edema formation, and elevation uses gravity to facilitate venous and lymphatic return, decreasing inflammatory fluid accumulation in the injured area.
C. Rest, Incubation, Compression, Elevation: Again, “Incubation” is incorrect. The term does not relate to acute injury treatment or inflammation control.
D. Rest, Ice, Circulation, Exercise: While ice and rest are appropriate, “circulation” and early “exercise” are not initial acute interventions. Premature exercise may exacerbate tissue injury and bleeding, delaying healing.
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