The nurse should question which order?
a. A normal saline enema to be repeated every 4 hours until stool is produced
b. A hypertonic solution enema with a patient with fluid volume excess
c. A Kayexalate enema for a patient with hypokalemia
d. An oil retention enema for a patient using mineral oil laxatives
C
Kayexalate binds to and helps excrete potassium, so it would be contraindicated in patients who are hypokalemic (have low potassium). Normal saline enemas can be repeated without risk of fluid or electrolyte imbalance. Hypertonic solutions are intended for patients who cannot handle large fluid volume and are contraindicated for dehydrated patients. Because mineral oil laxatives and an oil retention enema have the same intended effect of lubricating the colon and rectum, an oil retention enema is not needed.
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