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 ["A","D","E"]
Explanation
Choice A reason: This is correct because avoiding swimming underwater can help prevent the worsening of Meniere's disease. Meniere's disease is a disorder of the inner ear that causes episodes of vertigo, tinnitus, hearing loss, and fullness in the ear. Swimming underwater can increase pressure in the ear and trigger an attack. The nurse should advise the client to avoid activities that involve changes in altitude or pressure, such as flying, diving, or climbing.
Choice B reason: This is incorrect because wearing earphones when in crowded places can worsen Meniere's disease. Earphones can increase noise exposure and damage hearing, which is already impaired by Meniere's disease. The nurse should advise the client to avoid loud noises and use hearing aids if needed.
Choice C reason: This is incorrect because keeping eyes open during an acute attack can increase vertigo and nausea. Vertigo is a sensation of spinning or moving when still, which can be caused by Meniere's disease. Keeping eyes open can make vertigo worse by creating a visual mismatch with vestibular signals from the inner ear. The nurse should advise the client to close their eyes or focus on a stationary object during an attack.
Choice D reason: This is correct because sitting or lying down if whirling occurs can help prevent falls or injuries due to vertigo. Whirling is another term for vertigo, which can affect balance and coordination. Sitting or lying down can reduce movement and stabilize posture during an attack. The nurse should advise
the client to avoid driving or operating machinery when experiencing vertigo.
Choice E reason: This is correct because we do not know the exact cause of Meniere's disease. Meniere's disease is thought to be related to abnormal fluid balance or pressure in the inner ear, but what triggers this condition is unknown. The nurse should educate the client about possible risk factors, such as genetics, infections, allergies, autoimmune disorders, or head trauma, but also acknowledge the uncertainty and variability of the disease.
Choice F reason: This is incorrect because damage to the ear from excess noise is not the cause of Meniere's disease. Damage to the ear from excess noise can cause noise-induced hearing loss, which is a type of sensorineural hearing loss that affects the cochlea or the auditory nerve. Meniere's disease is a type of mixed hearing loss that affects both the cochlea and the middle ear. The nurse should not confuse or misinform the client about the cause of their condition.

Correct Answer is D
Explanation
Choice A Reason: This is incorrect because encouraging coughing and deep breathing can increase intracranial pressure (ICP), which is the pressure inside
the skull that can affect brain function. Coughing and deep breathing can increase blood flow and oxygen demand to the brain, which can worsen cerebral edema. The nurse should suction the patient as needed and maintain a patent airway.
Choice B Reason: This is incorrect because positioning the patient with knees and hips flexed can increase ICP by reducing venous drainage from the head. The nurse should position the patient with neck and body in alignment and avoid extreme flexion or extension of any joints.
Choice C Reason: This is incorrect because performing nursing interventions once an hour can disturb the patient's sleep and increase ICP by stimulating brain activity. The nurse should cluster nursing interventions and provide quiet and dark environment to promote rest and reduce stress.
Choice D Reason: This is correct because keeping the head of the bed elevated to 30 degrees can decrease ICP by facilitating venous drainage from the head and reducing cerebral blood volume. The nurse should monitor the patient's blood pressure and pulse to ensure adequate cerebral perfusion.
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