A nurse is reviewing the laboratory results of a client who has a pressure ulcer. The nurse should identify an elevation in which of the following laboratory values as an indication that the client has developed an infection?
RBC count
WBC count
Potassium
BUN
The Correct Answer is B
A. An elevation in the red blood cell (RBC) count is not a specific indication of infection. It primarily reflects oxygen-carrying capacity.
B. An elevation in the white blood cell (WBC) count is an indication of infection. When the body is fighting an infection, the number of white blood cells increases as part of the immune response.
C. Potassium is an electrolyte and is not a specific marker for infection. Abnormal potassium levels may indicate a variety of conditions, but they do not directly indicate infection.
D. Blood urea nitrogen (BUN) is a marker of kidney function and is not a specific indicator of infection. Elevated BUN levels can be seen in various kidney and non-kidney-related conditions.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["B","C","E"]
Explanation
A. Increased fiber in the diet is not a cause of constipation, but rather a preventive measure that can help promote regular bowel movements by adding bulk and softness to the stool.
B. Ignoring the urge to defecate is a cause of constipation, as it can lead to hardening and accumulation of fecal matter in the colon, resulting in difficulty and pain during defecation.
C. Inadequate fluid intake is a cause of constipation, as it can contribute to dehydration and reduced stool moisture, making it harder and drier to pass.
D. Increased activity is not a cause of constipation, but rather a beneficial factor that can stimulate intestinal motility and facilitate bowel elimination.
E. Excessive laxative use is a cause of constipation, as it can interfere with the normal functioning of the colon and cause dependence, leading to decreased bowel tone and reduced peristalsis.
Correct Answer is D
Explanation
A. Troponin is a marker for cardiac muscle damage. It is not directly related to anorexia and malnutrition.
B. Creatine kinase is also a marker for muscle damage, particularly in conditions like heart attacks or muscular disorders. It is not directly related to anorexia and malnutrition.
C. Total bilirubin is related to liver function. While severe malnutrition can affect liver function, it's not the primary marker for malnutrition.
D. Albumin is a protein synthesized by the liver and is an important indicator of nutritional status. In cases of malnutrition, especially protein-calorie malnutrition, serum albumin levels tend to decrease. This is due to the body's decreased ability to synthesize proteins when there is a lack of adequate nutrition.
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