Bursitis other diagnostic studies
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Sara Mehrsefat, M.D. [2]
Overview
Other diagnostic studies for bursitis include aspiration of the bursal fluid. It may be helpful in differentiate septic and aseptic bursitis.
Other diagnostic studies
Aspiration of the bursa
Indications for aspiration for bursal fluids include:
- Presence of local inflammation
- Fever
On aspiration of the bursa, Aseptic bursitis is characterized by
- White blood cell count (WBC) <500 mm3
- On aspiration of the bursa, septic bursitis is characterized by
- Increased protein and lactate level,
- Decreased glucose level,
- White blood cell count (WBC)WBC greater than 5000 to 20,000 mm3 with left shifts
- Positive culture and Gram stain
On aspiration of the bursa, bursitis associated with rheumatoid arthritis is characterized by
- Presence of cholesterol crystals
On aspiration of the bursa, bursitis associated with gout is characterized by
- Presence of Monosodium urate crystals
On aspiration of the bursa, bursitis associated with pseudogout is characterized by
- Presence of calcium pyrophosphate crystals