A nurse in an allergy clinic is caring for a client who has a history of seasonal allergy symptoms. The client had a radioallergosorbent test (RAST) completed on a previous visit. The nurse should recognize that an elevation in which of the following immunoglobulins indicates a positive result?
Immunoglobulin E (IgE)
Immunoglobulin M (IgM)
Immunoglobulin A (IgA)
Immunoglobulin G (IgG)
The Correct Answer is A
Choice A reason: Immunoglobulin E (IgE) is associated with allergic reactions. A RAST test measures the level of allergen specific IgE antibodies in the blood. An elevation in IgE indicates sensitization to a particular allergen and a positive result for the allergy.
Choice B reason: Immunoglobulin M (IgM) is usually the first antibody produced by the immune system when it detects an infection. It is not typically associated with the detection of allergies.
Choice C reason: Immunoglobulin A (IgA) plays a critical role in mucosal immunity and is found in high concentrations in the mucous membranes, particularly those lining the respiratory passages and the gastrointestinal tract, but it is not used as an indicator in RAST testing for allergies.
Choice D reason: Immunoglobulin G (IgG) is the most abundant type of antibody and is involved in the recognition and removal of pathogens. It is not specific to allergic response detection in RAST testing.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A reason: This choice is incorrect because an oral cholangiogram does not involve putting a camera down the throat. That procedure is more akin to an endoscopy.
Choice B reason: This statement is correct. An oral cholangiogram involves taking an Xray examination of the gallbladder after the patient has taken an iodine based contrast agent orally. The procedure is used to diagnose problems related to the gallbladder, such as gallstones or issues with bile flow.
Choice C reason: This choice is incorrect because an oral cholangiogram does not involve putting medication into the gallbladder to dissolve stones. That description is more consistent with nonsurgical treatments for gallstones, such as oral bile acid pills.
Choice D reason: This choice is incorrect as it describes a different procedure known as extracorporeal shock wave lithotripsy (ESWL), which uses shock waves to break up gallstones.
Correct Answer is B
Explanation
Choice A reason: Hypernatremia is not typically associated with prerenal AKI. Prerenal AKI is characterized by conditions that reduce blood flow to the kidneys, not directly causing high sodium levels.
Choice B reason: This choice is correct. Hyperkalemia, which is a high level of potassium in the blood, is a common electrolyte imbalance seen in prerenal AKI due to decreased kidney function and the inability to excrete potassium.
Choice C reason: Hypophosphatemia, or low levels of phosphate in the blood, is not a typical finding in prerenal AKI.
Choice D reason: Hypercalcemia, or high levels of calcium in the blood, is not commonly associated with prerenal AKI. It is more often related to other conditions such as hyperparathyroidism or malignancy.
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