A client has been taking oral antibiotic therapy for 3 days when she develops diarrhea. The most likely cause of the diarrhea is:
1. disruption of normal flora.
2. idiopathic causes.
3. hospital-acquired infection.
4. fluid volume excess.
Correct Answer: 1
Rationale 1: Disruption of normal flora by the antibiotics is the likely cause.
Rationale 2: There is a likely cause related to antibiotic therapy.
Rationale 3: The cause is likely iatrogenic.
Rationale 4: Fluid volume excess is not the likely cause.
Global Rationale: The colon harbors a substantial amount of bacteria and fungi, called the host flora, which serve a useful purpose by synthesizing B-complex vitamins and vitamin K. Disruption of the normal host flora can lead to diarrhea. While a hospital-acquired infection is possible, it is not the most likely reason. There is a reason for the change, so it is not idiopathic. Fluid volume excess is not suggested as cause.
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