Rheumatoid and Osteoarthritis Flashcards
What joints are involved in Rheumatoid Arthritis?
HAND JOINTS
- MCP
- PIP (NO DIP)
WRIST
ELBOWS
FOOT
- MTP
- Mid-Tarsal
- Cricoarytenoid
CERVICAL SPINE (Vs Lumbosacral in Osteoarthritis)
What 2 deformities are seen in RA?
Swan-neck= Hyperextesion of PIP with Flexion of DIP
Boutonniere=Flexion of PIP and Extesion of DIP
What 2 lipid component is often low in RA?
Total cholesterol and HDL are low in RA because of inflammtion of the vessel walls
Low BMI in a patient with RA increase what type of risk?
Increase CVD risk
Which RA med have the lowest risk of hyperlipidemia?
Hydroxycholoroquine
What are some extra-articular manifestions of RA?
- Rheumatoid Nodules-can be seen in internal organs like the heart and lungs, MTX can increase them dramatically.
- Rheumatoid Vasculitis: seen in whites with severe longstanding RA and high titer of RF/anti-ccp
- Pleural effusion with very low glucose
- Caplan Syndrome= Pulm. fibrosis + pulm nodule+ RA
- Eye: Kerattoconjunctivitis sica, episcleritis, and scleritis
What are the manifestations of RA Vasculitis?
- Digital arteritis leading to splinter hemorrhages, mononeuritis multiplex (wrist drop/ foot drop)
- Visceral arteritis can present as MI, bowel ischemia
What other autoimmune disorder can present with RA?
Sjogren
What is Felty’s syndrome?
Seropositive RA+ Neutropenia (<500) + Splenomegaly
Renal involvement in RA is due to what?
AA amyloidosis presenting as nephrotic syndrome
What does the synovial fluid in RA show?
- TURBID fluid (low viscosity vs high viscosity in OA)
- Increase protein
- Low Glucoe
- WBC >2000
- Decrease complement
What are the non-biologics used in RA?
Methotrexate (1st line) Leflunomide Hydroxychloroquine Sulfasalazine Minocycline Azathioprine
Prior to starting Azathioprine what should be checked?
Thiopurine methyltransferase should be checked as deficiency can lead to toxicity
What are the Biological agents?
TNF inhibitors:
- Etanercept
- Infliximab
- Adalimumab
Non-TNF Biologics: Anakinra (anti-IL 1) Abatacept (T cell costimulation inhibitor) Rituximab Tocilizumab, Sarilumab (Anti-IL 6) Tofacitinib (JAK inhibitors)
If RA severity remains moderate to high despite MTX monotherapy how should we escalate therapy?
1. Combining DMARDS Or 2. TNF inhibitor +/- MTX Or 3.Non-biologics TNFi +/- MTX
If diseae activity remains high despite this then add Steroids