Difference between revisions of "RHEUMATOID ARTHRITIS-INVESTIGATIONS"
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==Reference(s)== | ==Reference(s)== | ||
Wilkinson, I. (2017). Oxford handbook of clinical medicine. Oxford: Oxford University Press. | Wilkinson, I., Furmedge, D. and Sinharay, R. (2017). Oxford handbook of clinical medicine. Oxford: Oxford University Press. [https://amzn.to/3YHrI6K Get it on Amazon.] | ||
<br/>Feather, A., Randall, D. and Waterhouse, M. (2020). Kumar And Clark’s Clinical Medicine. 10th ed. S.L.: Elsevier Health Sciences. [https://amzn.to/3k7WSW0 Get it on Amazon.] | |||
<br/>Hannaman, R. A., Bullock, L., Hatchell, C. A., & Yoffe, M. (2016). Internal medicine review core curriculum, 2017-2018. CO Springs, CO: MedStudy. | <br/>Hannaman, R. A., Bullock, L., Hatchell, C. A., & Yoffe, M. (2016). Internal medicine review core curriculum, 2017-2018. CO Springs, CO: MedStudy. | ||
<br/>Therapeutic Guidelines. Melbourne: Therapeutic Guidelines Limited. https://www.tg.org.au [Accessed 2021]. | <br/>Therapeutic Guidelines. Melbourne: Therapeutic Guidelines Limited. https://www.tg.org.au [Accessed 2021]. | ||
Latest revision as of 20:03, 13 March 2023
SUMMARY
1. Rheumatoid factor (RF) is positive in only 80-85% of patients with RA. It may take up to 2 years to become RF positive.
2. RF is positive in major chronic non-rheumatic diseases: infections (TB, syphilis, hepatitis), pulmonary (sarcoidosis, ILD, silicosis) & miscellaneous diseases (malignancy).
3. Anti-CCP antibody appears earlier than RF, has greater specificity (97%), is associated with more aggressive disease and extra-articular involvement.
4. A high titer of either RF or anti-CCP contributes 3 of the 6 points required for the diagnosis.
5. RF (+) is associated with increased severity of disease with increased systemic manifestation (extra-articular features).
6. RF (+) can be seen in other diseases: rheumatic (SLE, scleroderma, Sjögren's), viral, parasitic, bacterial, neoplasms.
Reference(s)
Wilkinson, I., Furmedge, D. and Sinharay, R. (2017). Oxford handbook of clinical medicine. Oxford: Oxford University Press. Get it on Amazon.
Feather, A., Randall, D. and Waterhouse, M. (2020). Kumar And Clark’s Clinical Medicine. 10th ed. S.L.: Elsevier Health Sciences. Get it on Amazon.
Hannaman, R. A., Bullock, L., Hatchell, C. A., & Yoffe, M. (2016). Internal medicine review core curriculum, 2017-2018. CO Springs, CO: MedStudy.
Therapeutic Guidelines. Melbourne: Therapeutic Guidelines Limited. https://www.tg.org.au [Accessed 2021].
