A 44-year-old patient has been seen in the clinic for suspected arthritis. She is to undergo a procedure to retrieve synovial fluid from her knee for a definitive diagnosis. The nurse knows that which of the following procedures will be involved?
A) Angiography
B) Myelography
C) Paracentesis
D) Arthocentesis
Ans: D
Feedback: Arthrocentesis (needle aspiration of synovial fluid) may be performed not only to obtain a sample of synovial fluid for analysis, but also to relieve pain caused by pressure of increased fluid volume, usually in the knee or shoulder. Angiography is an x-ray study of circulation with a contrast agent injected into a selected artery. Myelography is an x-tray of the spinal subarachnoid space taken after the injection of a contrast agent into the spinal subarachnoid space through a lumbar puncture. Paracentesis is removal of fluid (ascites) from the peritoneal cavity through a small surgical incision or puncture made through the abdominal all under sterile conditions.
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