The client inquires what the positive result from the potassium hydroxide (KOH) test indicates. Which of the following is an accurate response by the nurse?
You have a virus.
You have a fungal infection.
You have a bacterial infection.
You have cancer.
The Correct Answer is B
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.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Choice A Reason: This is the correct choice. Washing towels, sheets, and pillowcases is a home care instruction that the nurse will offer to the client, as it prevents reinfection and transmission of bacteria or viruses. The client has conjunctivitis, which is inflammation of the conjunctiva or thin membrane that covers the white part of the eye and lines the eyelids. It can be caused by bacteria, viruses, allergies, or irritants.
Choice B Reason: This is an incorrect choice. Using antifungal drops 3 times a day is not a home care instruction that the nurse will offer to the client, as it is not effective for conjunctivitis. Antifungal drops are used for fungal infections of the eye, which are rare and usually occur after trauma or surgery. The client may need antibiotic or antiviral drops, depending on the cause of conjunctivitis.
Choice C Reason: This is an incorrect choice. Scheduling a sexually transmitted infection (STI/STD) exam is not a home care instruction that the nurse will offer to the client, as it is not relevant for conjunctivitis. STIs can affect the eyes, but they usually cause different symptoms, such as redness, pain, or discharge from the urethra or vagina. The client may need to be tested for STIs if they have other risk factors or signs of infection.
Choice D Reason: This is an incorrect choice. Avoiding going outside during daylight hours is not a home care instruction that the nurse will offer to the client, as it is not necessary for conjunctivitis. The client may experience sensitivity to light, but they can wear sunglasses or avoid direct sunlight to protect their eyes. The client should also avoid rubbing or touching their eyes, wear glasses instead of contact lenses, and discard any eye makeup or cosmetics that may be contaminated.
Correct Answer is C
Explanation
Choice A Reason: This is incorrect because a blister-like pustule on the face that oozes clear fluid may indicate impetigo, which is a bacterial skin infection, not basal cell carcinoma. Basal cell carcinoma is a type of skin cancer that arises from the basal layer of the epidermis, which is the outermost layer of the skin. Basal cell carcinoma lesions are usually not blistered or pustular, but rather smooth, shiny, or waxy.
Choice B Reason: This is incorrect because a dark brown lesion that is flat may indicate a mole, which is a benign growth of melanocytes, which are cells that produce pigment, not basal cell carcinoma. Basal cell carcinoma lesions are usually not dark brown or flat, but rather flesh-colored, pink, or red, and may have a raised or indented center.
Choice C Reason: This is correct because a small scaly, dry lesion on the elbow may indicate basal cell carcinoma. Basal cell carcinoma lesions are often small, scaly, and dry, and may bleed or crust over. They can occur anywhere on the body, but are more common on areas that are exposed to the sun, such as the face, neck, arms, or legs.
Choice D Reason: This is incorrect because location on the top of the head where exposed frequently to sunlight may indicate squamous cell carcinoma, which is another type of skin cancer that arises from the squamous layer of the epidermis, not basal cell carcinoma. Squamous cell carcinoma lesions are usually rough, scaly, or crusted, and may have a firm or hard texture. They can also occur anywhere on the body, but are more common on areas that are exposed to the sun.
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