Joints Flashcards
What are these features suggestive of - joint pain with associated swelling, morning stiffness, improvement with excersise, synovitis on examination, raised CRP and PV and extra-articular symptoms?
Inflammatory arthritis
In RA are women or men more commonly affected?
Women by 2-3 times more
In the pathogenesis of RA - what is the immune response initiated against?
Synovium
Name 3 triggers of RA?
Smoking, infection and trauma
What joints are not affected in RA?
DIP
Over time in RA the cervical spine can be affected and can cause cervical cord compression - what causes this?
Atlanto-axial subluxation
Name 4 categories of extra-articular features in RA?
Rheumatoid nodules
Lung involvement - pleural effusions, interstitial fibrosis and pulmonary nodules
Cardiovascular morbidity
Ocular involvement - keratoconjunctivitis sicca, episcleritis, uveitis and nodular scleritis that may lead to scleromalacia
What two autoantibodies can be measured in RA?
Rheumatoid factor
Anti-CCP - more specific!
What is the timeframe for starting DMARD therapy in RA?
3 months
What DMARD is usually first line in RA?
Methotrexate
What are patients with seronegative diseases usually positive with?
HLA-B27
In AS what gender is more commonly affected?
Males by 3:1 (age of onset 20-40)
Over time with AS what shape does the spine form?
Question mark - loss of lumbar lordosis and increased thoracic kyphosis
Name four associated conditions to AS? (A disease)
Anterior uveitis, aortitis, pulmonary fibrosis and amyloidosis
What class of drugs is not used in AS?
DMARDS - instead NSAIDs, anti-TNF inhibitors
Name two psoriatic nail changes?
Pitting and oncholysis
How is psoriatic arthritis treated
With DMARDS
What kind of infections most commonly cause reactive arthritis?
Genitourinary infections (Chlamydia and Neisseria) - joints become affectedc 1-3 weeks after the infection
What four conditions make up Reiters syndrome?
Uveitis, urethritis or conjuctivitis and arthritis
Cant see, cant pee, cant bend the knee
In what type of people is the prevelance of SLE high?
Black people
What is the genetic predisposition of SLE supported by?
40% concordance in monoxygotic twins
More than 90% of cases of SLE occur in which gender?
Women 11:1 during childbearing years. Onset is usually 20-30
List the presenting features of SLE. NO MAPID RASH
Neurological symptoms Oral ulcers Malar rash ANA positive (95% of patients but not specific) Photo sensitivity Immunodeficiency Discoid rash Renal problems Arthritis Serositis Haemoglobin low
Name the antibody specific to SLE and varies with disease activity?
Anti-dsDNA
Name the antibody in SLE with low sensitivity but specific?
Anti-Sm
When SLE is active what are the complement C3/4 levels?
Low
What test must be done when diagnosing SLE?
Urinalysis for evidence of glomerulonephritis
For skin disease and arthralgia in SLE what drugs are commonly used?
Hydroxychloroquine, topical steroids and NSAIDs
What conditions affecting the lungs and heart can SLE cause?
Pericardial effusion and interstitial lung disease - azathioprine may be required
For severe disease of SLE involving lupus nephritis or CNS lupus what treatment is given?
IV steroids and Cyclophosphamide
What disease presents with dryness of eyes and mouth, arhtralgia, fatigue, vaginal dryness and parotid gland swelling?
Sjogrens
What is there an increased risk of with Sjogrens?
Lymphoma