A patient is undergoing diagnostic testing to determine the etiology of recent joint pain. The patient asks the nurse about the difference between osteoarthritis (OA) and rheumatoid arthritis (RA). What is the best response by the nurse?
A) "OA is a considered a noninflammatory joint disease. RA is characterized by inflamed, swollen joints."
B) "OA and RA are very similar. OA affects the smaller joints such as the fingers, and RA affects the larger, weight-bearing joints like the knees."
C) "OA originates with an infection. RA is a result of your body's cells attacking one another."
D) "OA is associated with impaired immune function; RA is a consequence of physical damage."
Ans: A
Feedback:
OA is a degenerative arthritis with a noninflammatory etiology, characterized by the loss of cartilage on the articular surfaces of weight-bearing joints, with spur development. RA is characterized by inflammation of synovial membranes and surrounding structures. The diseases are not distinguished by the joints affected and neither has an infectious etiology.
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