A patient has been experiencing an unexplained decline in knee function and has consequently been scheduled for arthrography. The nurse should teach the patient about what process?
A) Injection of a contrast agent into the knee joint prior to ROM exercises
B) Aspiration of synovial fluid for serologic testing
C) Injection of corticosteroids into the patient's knee joint to facilitate ROM
D) Replacement of the patient's synovial fluid with a synthetic substitute
Ans: A
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During arthrography, a radiopaque contrast agent or air is injected into the joint cavity to visualize the joint structures such as the ligaments, cartilage, tendons, and joint capsule. The joint is put through its range of motion to distribute the contrast agent while a series of x-rays are obtained. Synovial fluid is not aspirated or replaced and corticosteroids are not administered.
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