A patient is being treated for active tuberculosis with ethambutol (Myambutol). The patient states to the nurse that he cannot identify the red and green on the traffic lights when he is driving
Based on this finding, what medical intervention is most appropriate? A) Assess for photosensitivity.
B) Discontinue ethambutol (Myambutol).
C) Decrease the ethambutol (Myambutol) dose.
D) Administer vitamin B12.
B
Feedback:
The administration of ethambutol should be discontinued if optic neuritis develops. Optic neuritis is an inflammatory, demyelinating disorder of the optic nerve that decreases visual acuity and ability to differentiate red and green. The inability to distinguish red and green is not indicative of photosensitivity. The ethambutol should not be decreased. There is no indication for the administration of vitamin B12.
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