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Approach to Joint Pain, WORK UP: ARTHROCENTESIS - Coggle Diagram
Approach to Joint Pain
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seromarkers:
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anti-histone (lupus, drug-induced)
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anti-topoisomerase (scleroderma, systemic)
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WORK UP: ARTHROCENTESIS
Septic
Appearance: pus/opaque
WBC: >50k
PMN:
Gram stain/cx: positive, depending on organism (staph shows up right away, gonorrhea needs NAAT/chocolate agar)
Crystals: negative
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