A nurse is caring for a patient who has rheumatoid arthritis. Which of the following laboratory tests are used to diagnose the disease? (Select all that apply)
Antinuclear antibody (ANA) titer
BUN
Urinalysis
Erythrocyte sedimentation rate (ESR)
White blood cell count
Correct Answer : A,D,E
Choice A rationale:
Antinuclear antibody (ANA) titer is a blood test that detects the presence of antinuclear antibodies, which are autoantibodies that target the body's own tissues. These antibodies are often present in people with autoimmune diseases, including rheumatoid arthritis.
While a positive ANA test does not definitively diagnose rheumatoid arthritis, it can support a diagnosis when considered alongside other clinical findings and laboratory tests.
Choice B rationale:
Blood urea nitrogen (BUN) is a blood test that measures the amount of urea nitrogen in the blood. Urea nitrogen is a waste product that is produced when the body breaks down proteins.
BUN levels can be elevated in people with kidney disease, dehydration, or certain other medical conditions. However, BUN is not specifically used to diagnose rheumatoid arthritis.
Choice C rationale:
Urinalysis is a test that examines the urine for various substances, including cells, bacteria, and chemicals.
It can be used to diagnose a variety of conditions, including urinary tract infections, kidney disease, and diabetes. However, urinalysis is not typically used to diagnose rheumatoid arthritis.
Choice D rationale:
Erythrocyte sedimentation rate (ESR) is a blood test that measures how quickly red blood cells settle at the bottom of a test tube.
A high ESR can indicate inflammation in the body.
ESR is often elevated in people with rheumatoid arthritis, as it is a marker of inflammation.
Choice E rationale:
White blood cell count (WBC) is a blood test that measures the number of white blood cells in the blood. White blood cells are part of the immune system and help fight infection.
A high WBC count can indicate an infection or inflammation.
WBC count can be elevated in people with rheumatoid arthritis, as it is a marker of inflammation.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Choice A rationale:
Hypothermia, or abnormally low body temperature, is not typically a symptom of diarrhea. While it’s possible for a person with severe diarrhea to experience chills or feel cold, hypothermia is not a direct result of diarrhea.
Choice B rationale:
A rigid abdomen is often a sign of a serious condition like peritonitis (inflammation of the peritoneum, the tissue that lines the inner wall of the abdomen), but it is not typically associated with diarrhea.
Choice C rationale:
Dehydration is a common complication of diarrhea. When a person has diarrhea, they can lose a lot of fluid and electrolytes quickly, leading to dehydration. Symptoms of dehydration can include thirst, less frequent urination, dark-colored urine, fatigue, dizziness, and confusion.
Choice D rationale:
Decreased bowel sounds are not typically associated with diarrhea. In fact, bowel sounds may actually increase in some cases of diarrhea due to increased gut motility.
Correct Answer is B
Explanation
Choice A rationale:
Administering insulin to a client who is hyperventilating due to respiratory alkalosis would not be the appropriate action. Insulin is used to lower blood glucose levels in clients with hyperglycemia, such as those with diabetes mellitus. It does not directly address the issues of hyperventilation or respiratory alkalosis.
Choice B rationale:
Having the client breathe into a paper bag is the correct action in this case. When a person hyperventilates, they exhale more carbon dioxide (CO2) than they produce. This can lead to a state of respiratory alkalosis, where the blood becomes too alkaline due to the low levels of CO2. By breathing into a paper bag, the client re-inhales some of the exhaled CO2, helping to restore the balance of gases in the blood and alleviate the symptoms of respiratory alkalosis.
Choice C rationale:
Administering sodium bicarbonate to a client who is hyperventilating and has respiratory alkalosis would not be the appropriate action. Sodium bicarbonate is an alkalinizing agent used to treat conditions where there is too much acid in the body, such as metabolic acidosis. In this case, the client’s body is too alkaline due to the respiratory alkalosis, so administering an alkalinizing agent would exacerbate the condition.
Choice D rationale:
Having the client place their head between their knees would not be the appropriate action for a client who is hyperventilating due to respiratory alkalosis. This position is often used to help alleviate symptoms of dizziness or fainting, but it does not address the underlying issue of the imbalance of gases in the blood due to hyperventilation.
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