NCLEX PN Practice Test Practice Question
A client with active pulmonary tuberculosis is prescribed 4-drug therapy with ethambutol. The nurse reinforces previous teaching to notify the health care provider immediately if which adverse effect associated with ethambutol occurs?
Correct Answer: A
Rationale: Ethambutol can cause optic neuritis, leading to blurred vision (A), a serious side effect requiring immediate reporting. Dark urine (B), hearing loss (C), and jaundice (D) are associated with other TB drugs (e.g., rifampin, isoniazid).
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