What is the one definitive test to diagnose rheumatoid arthritis?
One test is not definitive
A positive rheumatoid factor (RF)
An elevated erythrocyte sedimentation rate (ESR)
A positive antinuclear antibody (ANA)
The Correct Answer is A
A. While tests like RF, ESR, and ANA can indicate the presence of rheumatoid arthritis or autoimmune activity, no single test is definitive for diagnosing RA.
B. A positive rheumatoid factor is common in RA but can also be found in other conditions, making it not exclusively diagnostic.
C. An elevated ESR indicates inflammation but is nonspecific and not solely indicative of rheumatoid arthritis.
D. A positive ANA is associated with various autoimmune diseases and is not specific to RA.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
A. Cancer is not a common cause of acute pancreatitis; it may cause chronic pancreatitis or complications in later stages.
B. While cystic fibrosis can lead to pancreatic damage, it is not the most prevalent cause of acute pancreatitis.
C. Autoimmunity can contribute to pancreatic conditions but is not the leading cause of acute pancreatitis.
D. Excess alcohol intake is a well-established and the most common cause of acute pancreatitis due to its toxic effects on pancreatic cells.
Correct Answer is D
Explanation
A. While HIV affects a range of immune cells, it specifically targets certain types.
B. CD4 cells include T helper cells, but stating only CD4 cells oversimplifies the response.
C. T suppressor cells, while affected by HIV, are not the primary targets.
D. T helper cells, which express the CD4 surface marker, are the primary targets of HIV, leading to the characteristic immunosuppression seen in the infection.
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