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.
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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 C
Explanation
A. Dermal thickness burn is not a standard classification for burns.
B. A full-thickness burn extends through the entire dermis and often involves the underlying tissues, which is not consistent with redness and blistering.
C. Based on the symptoms described – redness and blistering – the depth of burn experienced is consistent with a second-degree burn, also known as a partial-thickness burn. This type of burn affects not only the outer layer of skin, known as the epidermis, but also extends into the dermis, which is the second layer of skin.
D. Deep partial-thickness burns affect not only the epidermis but also the deeper layer of the skin, the dermis, and they do not typically blister immediately.
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