Which type of enema is typically used to relieve constipation by instilling and retaining fluid for a short period before expelling?
Lactulose Enema
Fleet Enema
Tap water enema
Mineral Enema
The Correct Answer is B
Rationale:
A. Lactulose is usually administered orally to soften stools, not as a short-retention enema.
B. A Fleet enema is a hypertonic solution that draws fluid into the colon, is retained briefly, and promotes rapid evacuation of stool to relieve constipation.
C. Tap water enemas are hypotonic and typically require immediate expulsion, not short retention.
D. Mineral oil enemas are retention enemas, meant to soften stool over a longer period, not for rapid evacuation.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Rationale:
A. Lactulose is usually administered orally to soften stools, not as a short-retention enema.
B. A Fleet enema is a hypertonic solution that draws fluid into the colon, is retained briefly, and promotes rapid evacuation of stool to relieve constipation.
C. Tap water enemas are hypotonic and typically require immediate expulsion, not short retention.
D. Mineral oil enemas are retention enemas, meant to soften stool over a longer period, not for rapid evacuation.
Correct Answer is C
Explanation
Rationale:
A. Extreme thirst is associated with hypernatremia, not hypokalemia.
B. Hypokalemia typically causes hyporeflexia, not hyperactive reflexes.
C. Weak, irregular pulse is expected with hypokalemia because low potassium affects cardiac conduction and muscle contractility, increasing the risk of dysrhythmias.
D. Hypokalemia usually causes hypoactive bowel sounds due to decreased smooth muscle activity.
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