A patient is seen at the urgent care center following a blunt injury to the left knee. The knee is grossly swollen and very painful, but the skin is intact. During an arthrocentesis on the patient’s knee, the nurse would expect the aspirated fluid to appear
b. purulent and thick.
c. straw colored.
d. white, thick, and ropelike.
ANS: A The patient’s clinical manifestations suggest hemarthrosis, and the appearance of blood in the synovial fluid is expected. Purulent fluid occurs when there is a joint infection. Straw-colored fluid is normal and will not be expected when the knee is swollen and painful. Thick fluid suggests infection.