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
Explanation
Choice A reason: This is the correct answer because both ulcerative colitis and Crohn's disease are inflammatory bowel diseases (IBD) that cause chronic inflammation of the digestive tract. The inflammation can cause symptoms such as abdominal pain, diarrhea, bleeding, weight loss, or fever. The nurse should educate the client on how to manage inflammation and prevent complications.
Choice B reason: This is incorrect because both ulcerative colitis and Crohn's disease do not affect the entire alimentary canal, but different parts of it. Ulcerative colitis affects only the colon (large intestine) and rectum, while Crohn's disease can affect any part of the digestive tract from mouth to anus, most commonly the ileum (the last part of the small intestine). The nurse should explain the differences in location and extent of
the diseases.
Choice C reason: This is incorrect because both ulcerative colitis and Crohn's disease do not always require a bowel diversion, but only in some cases. A bowel diversion is a surgical procedure that creates an opening (stoma) in the abdomen to divert fecal matter into an external bag or pouch. It may be done to treat severe complications such as perforation, obstruction, fistula, or cancer. The nurse should inform the client about the indications, types, and care of bowel diversions.
Choice D reason: This is incorrect because both ulcerative colitis and Crohn's disease are not caused by low-fat, high-fiber diets, but by unknown factors. The exact causes of IBD are not clear, but they may involve genetic, immune, environmental, or microbial factors. Low-fat, high-fiber diets may help prevent or reduce symptoms of IBD, but they do not cause them. The nurse should advise the client on how to follow a balanced and nutritious diet that suits their individual needs and preferences.

Correct Answer is D
Explanation
Choice A Reason: This is incorrect because intestinal obstruction is not a common complication of ileostomy surgery. An ileostomy is a surgical opening in the abdomen that connects the end of the small intestine (ileum) to a pouch or bag outside the body. This allows stool to bypass the colon and rectum. Intestinal obstruction can occur if there is a blockage or narrowing in any part of the digestive tract, but it is more likely to affect the colon than the ileum.
Choice B Reason: This is incorrect because folate deficiency is not a common complication of ileostomy surgery. Folate is a vitamin that is essential for DNA synthesis and cell division. Folate is mainly absorbed in the jejunum, which is the middle part of the small intestine. An ileostomy does not affect the jejunum, so it does not interfere with folate absorption.
Choice C Reason: This is incorrect because malabsorption of fat is not a common complication of ileostomy surgery. Fat is digested and absorbed in both the small and large intestine. An ileostomy does not affect fat digestion, but it may reduce fat absorption by decreasing the transit time and surface area of the intestine. However, this is usually not significant enough to cause malabsorption symptoms.
Choice D Reason: This is correct because fluid and electrolyte imbalance is a common complication of ileostomy surgery. Fluid and electrolytes are mainly absorbed in the colon, which is bypassed by an ileostomy. This can result in increased fluid and electrolyte loss through stool, especially sodium and potassium. This can lead to dehydration, hypotension, weakness, cramps, or arrhythmias.

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