The physician suspects a client has a dermatological infection. Which of the following diagnostics will be ordered to observe color changes to the skin using an ultraviolet light source?
Culture
KOH
Diascopy
Wood's
The Correct Answer is D
Choice A Reason: Culture is not a diagnostic test that uses an ultraviolet light source, but a laboratory test that involves growing microorganisms from a sample of body fluid or tissue. Culture can help identify the type and sensitivity of the infection-causing agent.
Choice B Reason: KOH is not a diagnostic test that uses an ultraviolet light source, but a chemical test that involves applying potassium hydroxide to a sample of skin, hair, or nail. KOH can help diagnose fungal infections by dissolving the keratin and revealing the fungal elements under a microscope.
Choice C Reason: Diascopy is not a diagnostic test that uses an ultraviolet light source, but a physical test that involves applying pressure to a lesion with a glass slide or lens. Diascopy can help differentiate between blanchable and non-blanchable lesions, such as erythema or petechiae.
Choice D Reason: Wood's is a diagnostic test that uses an ultraviolet light source, also known as a Wood's lamp or black light. Wood's can help observe color changes to the skin that are not visible under normal light, such as fluorescence or hypopigmentation. Wood's can help diagnose conditions such as tinea capitis, vitiligo, or erythrasma.

Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
Choice A Reason: This choice is incorrect. Losing bladder control is not a feature of complex partial seizures, but rather of generalized tonic-clonic seizures. Complex partial seizures are a type of focal seizures that affect a specific area of the brain and cause impaired awareness and automatisms. Automatisms are repetitive and involuntary movements or behaviors that occur during a seizure.
Choice B Reason: This choice is incorrect. Having fixed and dilated eyes is not a feature of complex partial seizures, but rather of brain death or severe brain injury. Complex partial seizures do not affect the pupils or eye movements, but rather the level of consciousness and motor activity.
Choice C Reason: This choice is incorrect. Making involuntary groaning sounds is not a feature of complex partial seizures, but rather of simple partial seizures. Simple partial seizures are a type of focal seizures that affect a specific area of the brain and do not impair awareness or cause automatisms. They can cause sensory, motor, or psychic symptoms, such as auditory or visual hallucinations, tingling sensations, or emotional changes.
Choice D Reason: This is the correct choice. Having involuntary facial movements, such as lip-smacking, is a feature of complex partial seizures. Complex partial seizures often originate from the temporal lobe of the brain, which is involved in memory, language, and emotion. They can cause automatisms that affect the mouth, face, or hands, such as chewing, swallowing, picking, or fidgeting.
Correct Answer is B
Explanation
Choice A Reason: This is incorrect because full vision loss in one eye does not necessarily mean that the person is legally blind. Legal blindness depends on the visual acuity and visual field of both eyes.
Choice B Reason: This is correct because legal blindness is defined by the World Health Organization (WHO) as having a visual acuity of 20/200 or worse in the better eye with the best possible correction, such as glasses or contact lenses. This means that the person can see at 20 feet what a normal person can see at 200 feet.
Choice C Reason: This is incorrect because inability to see clearly from 200 feet away without corrective lenses may indicate nearsightedness or myopia, but not legal blindness. Nearsightedness can be corrected with lenses or surgery.
Choice D Reason: This is incorrect because bilateral visual impairment of 20/60 or greater does not meet the criteria for legal blindness. Visual impairment is defined by WHO as having a visual acuity of less than 20/60 but better than 20/200 in the better eye with the best possible correction.

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