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 is incorrect because laceration is not an acute traumatic brain injury, but a type of wound that involves tearing or cutting of the skin or other tissues. Laceration can occur as a result of a motor vehicle accident, but it does not cause changes in the GCS or pupil size. The nurse should assess the client's skin for any signs of laceration, such as bleeding, swelling, or infection.
Choice B reason: This is incorrect because acute subdural hematoma is not likely to cause a dilated pupil on the left side. Acute subdural hematoma is a type of traumatic brain injury that involves bleeding between the dura mater and the arachnoid mater, which are two layers of the meninges that cover the brain. An acute subdural hematoma can cause a rapid decrease in the GCS, but it usually causes a dilated pupil on the same side as the injury, not on the opposite side.
Choice C reason: This is incorrect because intracerebral hemorrhage is not likely to cause a dilated pupil on the left side. Intracerebral hemorrhage is a type of traumatic brain injury that involves bleeding within the brain tissue itself. Intracerebral hemorrhage can cause a gradual decrease in the GCS, but it usually causes neurological deficits that correspond to the location of the bleeding, such as weakness, numbness, or aphasia, not pupillary changes.
Choice D reason: This is correct because epidural hematoma can cause a dilated pupil on the left side. Epidural hematoma is a type of traumatic brain injury that involves bleeding between the dura mater and the skull. Epidural hematoma can cause a lucid interval, which is a period of normal consciousness followed by a sudden decrease in the GCS, and a dilated pupil on the opposite side of the injury, due to compression of the third cranial nerve. The nurse should notify the provider immediately and prepare for emergency surgery.
Correct Answer is A
Explanation
Choice A reason: This is correct because hearing loss is the most common complaint associated with a problem involving the inner ear. The inner ear consists of the cochlea, which is the organ of hearing, and the vestibular system, which is the organ of balance. The inner ear converts sound waves into nerve impulses that are sent to the brain. Any damage or dysfunction of the inner ear can impair hearing and cause hearing loss.
Choice B reason: This is incorrect because tinnitus is not the most common complaint associated with a problem involving the inner ear, but rather a symptom that can occur with various ear problems. Tinnitus is a ringing, buzzing, or hissing sound in the ears that is not caused by an external source. Tinnitus can be caused by exposure to loud noise, ear infections, earwax buildup, aging, or certain medications, but it is not specific to the inner ear.
Choice C reason: This is incorrect because pruritus is not a complaint associated with a problem involving the inner ear, but rather a complaint associated with a problem involving the outer ear. Pruritus is itching of the skin that can be caused by dryness, irritation, infection, or allergy. Pruritus can affect the outer ear, which is the visible part of the ear that collects and directs sound waves into the ear canal, but it has no relation to the inner ear.
Choice D reason: This is incorrect because muffled sounds are not a complaint associated with a problem involving the inner ear, but rather a complaint associated with a problem involving the middle ear. Muffled sounds are sounds that are unclear or distorted due to reduced sound transmission or perception. Muffled sounds can be caused by fluid buildup, inflammation, infection, or perforation of the eardrum in the middle ear, which is the air-filled space between the eardrum and the inner ear that contains three tiny bones that amplify sound vibrations.
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