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 B
Explanation
Choice A Reason: A virus is not detected by the KOH test, which is used to diagnose fungal infections of the skin, hair, or nails. A virus can be detected by other tests, such as polymerase chain reaction (PCR) or viral culture.
Choice B Reason: A fungal infection is detected by the KOH test, which dissolves the skin cells and leaves behind the fungal elements that can be seen under a microscope. A fungal infection can cause symptoms such as itching, scaling, redness, or blisters.
Choice C Reason: A bacterial infection is not detected by the KOH test, which is specific for fungi. A bacterial infection can be detected by other tests, such as gram stain or culture.
Choice D Reason: Cancer is not detected by the KOH test, which is not a screening tool for malignancy. Cancer can be detected by other tests, such as biopsy or imaging.
Correct Answer is D
Explanation
Choice A reason: This is incorrect because slow cautious behaviors are more consistent with a stroke involving the right hemisphere. The right hemisphere controls spatial awareness, creativity, and intuition. A stroke affecting this hemisphere can cause impulsivity, poor judgment, and denial of deficits.
Choice B reason: This is incorrect because loss of depth perception is more consistent with a stroke involving
the right hemisphere. The right hemisphere controls visual-spatial perception, which includes depth perception, distance estimation, and object recognition. A stroke affecting this hemisphere can cause difficulty in navigating space, judging distances, and identifying objects.
Choice C reason: This is incorrect because the overestimation of abilities is more consistent with a stroke involving
the right hemisphere. The right hemisphere controls emotional regulation, self-awareness, and insight. A stroke affecting this hemisphere can cause euphoria, lack of insight, and unrealistic expectations.
Choice D reason: This is the correct answer because hemianopsia is consistent with a stroke involving
the left hemisphere. The left hemisphere controls language, logic, and analysis. A stroke affecting this hemisphere can cause hemianopsia, which is the loss of vision in half of the visual field. This can affect reading, writing, and communication skills.
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