Abnormalities of respiratory gases in synovial fluid of patients with juvenile rheumatoid arthritis

Synovial fluids from 26 knees of patients with juvenile rheumatoid arthritis were analyzed for partial pressure of oxygen (pO2) and carbon dioxide (pCO2), pH, and for lactate. As in adult rheumatoid arthritis, a low Po2 level was associated with a high concentration of lactate (r = −0.81), and inver...

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