Inflammatory arthritis disorders Flashcards
Rheumatoid Arthritis
An autoimmune and inflammatory disease which mainly attacks the joints, usually many joints at once.
Epidemiology of Rheumatoid arthritis
- Females affected more than men
* Peak incidence in the 50’s
Describe the clinical features of RA.
- Pain worse in the morning (morning stiffness lasting greater than 1 hour)
- Relieved by exercise
Describe the hand changes in Rheumatoid Arthritis
- Symmetrical joint tenderness, redness and swelling
- Sausage shaped fingers
- Loss of valleys around the knuckles
- Swan neck deformity
- Boutonniere deformity
- Carpal tunnel syndrome
- Ulnar deviation of MCPs
- Radial deviation of wrist
- Rheumatoid nodules
What is swan neck deformity?
Hyper-extension at the PIP joint and flexion of the DIP joint
Boutonniere deformity
Flexion of the PIP joint and hyper-extension of the DIP joint
X-ray changes in RA
Periarticular osteoporosis
Erosions
Increased joint space
Soft tissue swelling
Investigations in RA.
- FBC – anaemia of chronic disease
- ESR/CRP – raised
3, Positive RF - Positive anti-CCP
- CXR
- Pulmonary effusion
- Pulmonary fibrosis (caused by methotrexate)
Rheumatoid nodules
Firm lumps that appear under the skin in up to 20% of patients with RA. They usually occur overexposed joints that are subject to trauma, such as the finger joints and elbows.
What antibodies are present in RA
RF
AntiCCP
Management of RA
NSAIDs (+PPI)
Steroids
DMARDs
Anti-TNFs inhibitors (biological drugs)
First line DMARDs in RA
Methotrexate
Side effects of Methotrexate
Bone marrow suppression
Pulmonary fibrosis
Renal failure
Hepatotoxicity
Second line DMARDs in RA
Sulfasalazine
Side effects of Sulfasalazine
Oligospermia
Hepatotoxicity
Bone marrow suppression
How is the effectiveness of DMARDs measured?
CRP
Side effects of Azathioprine (DMARD)
Hepatotoxicity
Bone marrow suppression
Side effect of Penicillamine
Nephrotic syndrome
Side effects of Gold
Nephrotic syndrome
Skin reaction
Side effects of Hydroxychloroquine
Corneal micro deposits
Retinopathy
Tinnitus
Side effects of Anti-TNF inhibitors (etanercept, adalimumab, infliximab)
Blood dyscrasias
Reactivation of TB
Anaphylaxis
What investigation needs to be done before prescribing Anti-TNF inhibitors?
Chest Xray (reactivation of latent TB)
Examples of Anti-TNF inhibitors
Etanercept, adalimumab, infliximab
When can Anti-TNF inhibitors be prescribed in RA?
Only if 2 DMARDs have failed (with 1 of them being methotrexate).