A patient who has chronic constipation asks the nurse about the use of psyllium (Metamucil). Which information will the nurse include in the response?
Dietary sources of fiber should be eliminated to prevent excessive gas formation.
Use of this type of laxative to prevent constipation does not cause adverse effects.
Fiber-containing laxatives may reduce the absorption of fat-soluble vitamins.
Large amounts of fluid should be taken to prevent impaction or bowel obstruction.
The Correct Answer is D
Rationale:
A. Dietary sources of fiber should not be eliminated; in fact, fiber from food complements the effect of psyllium and supports normal bowel function.
B. Fiber-containing laxatives can have adverse effects, such as bloating, gas, or, rarely, intestinal obstruction if not taken with adequate fluid.
C. Psyllium does not significantly reduce absorption of fat-soluble vitamins; this concern is more relevant to certain other medications, like cholestyramine.
D. Psyllium absorbs water in the intestines, forming a bulky stool. To prevent fecal impaction or bowel obstruction, it is essential to take large amounts of fluid when using this type of laxative.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Rationale:
A. The pH of 7.3 indicates acidemia (normal range 7.35–7.45). The PaCO2 of 50 mm Hg is elevated (normal 35–45 mm Hg), indicating a respiratory cause. This combination is consistent with respiratory acidosis.
B. Respiratory alkalosis would present with a high pH and low PaCO2.
C. Metabolic acidosis would show a low pH and low HCO3-.
D. Metabolic alkalosis would show a high pH and elevated HCO3-.
Correct Answer is C
Explanation
Rationale:
A. The tubing for TPN must be changed every 24 hr (not 48 hr) to reduce the risk of central line–associated bloodstream infection (CLABSI).
B. Lipid emulsions should not hang for more than 12 hr to prevent bacterial growth and infection.
C. A 1.2-micron filter is required for TPN that contains lipids to remove particulate matter, bacteria, and fungi, since lipid solutions cannot pass through smaller filters.
D. TPN solutions should be changed every 24 hr (not 36 hr) to reduce infection risk.
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