• Mrs. Pervenche, 52 years old, consults for pain and inflammation in both wrists and in the two second MCPs for the past 2 months. You find synovitis in these four joints. | ||
If you were thinking of… | And then if you were to find… | This hypothesis would become: |
Making a diagnosis of rheumatoid arthritis | Negative for rheumatoid factor and anti-CCP antibodies |
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Making a diagnosis of rheumatoid arthritis | A line of chondrocalcinosis on radiographs of the hand at the level of the triangular carpal ligament |
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• Mr Xavier, 68 years old, comes in for his first viscosupplementation injection in the left knee. He is on oral anticoagulants for atrial fibrillation. | ||
If you were thinking of… | And then if you were to find… | This hypothesis would become: |
Administering the injection | Previous day’s INR of 2.9 |
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