Rheumatology Flashcards
Differential monoarticular arthritis? (7)
Inflammatory (acule)
- Crystalline 80%!
→ gout (Acute) (monosodium urate )
→ pseudogout (Acute) (ccpd: calcium pyrophosphate crystals )
→ calcium hydroxyapatite
→ calcium oxalate - septic !
→ bacterial
→ mycobacterium
→ Lyme disease
→ fungal - spondyloarthritis
- psoriatic arthritis
- reactive arthritis (previous diarrhoea/genital infection)
- enteropathic arthritis
Non-inflammatory
- osteoarthritis
- trauma: fracture, haemarthrosis
Define oligoArthritis
5 or less joints
Define polyarthritis
> 5 joints
Differential Oligoarthritis? (8)
Inflammatory
- Crystal
- spondyloarthritides
→ ankylosing spondylitis
→ Psoriatic arthritis
→ enterohepatic spondyloarthropathies
→ reactive eg yersinia salmonella, campylobacter
Non-inflammatory
- Osteoarthritis
- hypothyroid
- Amyloidosis
Differential polyarticular arthralgia? (5)
Inflammatory
- rheumatoid arthritis
- systemic rheumatic disease: SLE (small joints, synovitis), vasculitis, systemic sclerosis,polymyositis, dermatomyositis
- infections: viral (hbv, HCV, parvo) (symmetrical, small joints), bac (endocarditis, Lyme disease), rheumatic fever
- psoriatic arthritis (assymetrical, all joints and entheses, associated with nail pitting / onycholysis, dactylics ), reactive arthritis.
- axial spondyloanthritis + enteropathic arthritis (lower > upper limbs)
- juvenile idiopathic arthritis
- chronic gout
- chronic sarcoidosis ( often ankles)
- calcium pyrophosphate arthritis
Non inflammatory
- osteoarthritis
- fibromyalgia
Investigation arthralgia?
Synovial fluid analysis, culture
Xray
Empirical treatment septic arthritis? (3)
Bone inFection Grub
- Flucloxacillin 1 g/6h slowly iv (b lactamaSe resistant- narrow spec - streptococci, staph )
- benzylpenicillin 1,2g / 4h iv (b lactase sensitive - broad spec- aerobic G + and G- , anaerobic )
- with or without gentamicin (aminoglycoside- broad spec except strep and anaerobes-mostly G- )
Name 4 spondyloarthitides
- Ankylosing spondylitis (schober test )
- psoriatic arthritis
- enterohepatic spondyloarthropathies
- reactive arthritis eg yersinia salmonella, campylobacter
Diagnosis SLE?
Soap brain md (4 or more = diagnosis)
- Serositis: pericarditis/pleuritis
- oral/nasal ulcers
- arthritis
- photo sensitivity
- blood disorders: haemolytic anaemia, leukopenia, lymphopenia, thrombocytopenia
- renal involvement: persistent proteinuria/cellular casts
- antinuclear antibodies
- immunologic phenomena: anti-dsDNA, anti- Sm, antiphospholipid antibodies
- neurological disorder: seizures, psychosis
- malar rash
- discoid rash
Treatment SLE? (6)
- Lifestyle: sunblock
- joints+skin: NSAIDs, hydroxychloroquine (malaria drug) if not controlled
- low dose steroids
- flares eg haemolytic anaemia, nephritis, severe pericarditis, CNS disease: high dose prednisolone with iv cyclophosphamide (immunosuppressant). Azathioprine (immunosuppressant) for maintenance.
- rituximab = monoclonal antibody
- Low dose aspirin for antiphospholipid syndrome
Tests for SLE? (4)
- Ana
- anti - dsdna
- anti- Sm antibody
- antiphospholipid antibody
- low complement (c3, C4, CH50)
- direct Coombs test in absence of haemolytic anaemia
Name 2 antiphospholipid antibodies
- Anticardiolipin antibodies
- lupus anticoagulants
What is anti-phospholipid syndrome
Symptom complex that occurs secondary to SLE in 35%
Or as primary disease (majority)
Features antiphospholipid syndrome? (4)
CLOT
- coagulation defect
- livedo reticularis
- obstetric: recurrent miscarriage
- thrombocytopenia.
Prothrombotic tendency affecting cerebral (stroke), renal and cv circulation
Name 3 drugs that cause SLE
- Isoniazid
- hydralazine (vasodilator to rx ht)
- phenytoin
Will have antihistone antibodies. Predominantly skin and lung signs
Renal signs SLE? (2)
- Persistent proteinuria > 0,5g/d or 3+ dipstix or
- cellular casts
Causes erythema nodosum? (6)
NODOSUM
- No cause in 60%
- drugs: antibiotics eg sulfonamides, amoxicillin,
- oral contraceptives
- sarcoidosis or Lofgren’s syndrome
- ulcerative colitis, ! Chrons, ! bechets
- micro-organisms: tb + BCG. vaccine, viruses ( HSv, EBV, HIV, hep b+c), bacteria (streptococcus, campylobacter, syphilis, yersinia salmonella ), parasitic ( amebiasis, giardiasis)
Treatment gout attack? (2)
- Strong NSAID eg indomethacin. If c/i, use colchicine 0,5mg bd /tds.
- steroids
- prophylaxis: allopurinol ( xanthine oxidase inhibitor)
Prevention gout? (2)
- Lifestyle: avoid prolonged fasts, alcohol excess, purine rich food eg meat, seafood; weight loss, avoid low dose aspirin (increase serum urate)
- allopurinol, wait 3 weeks after acute attack. Cover with NSAID / colchicine
- other: febuxostat, uricosuric drugs
Extra-articular Presentation rheumatoid arthritis? (11)
SHOPPING CMV
- systemic: fever, weight loss, fatigue
- haematological: thrombocytosis,
- ocular: scleritis, episcleritis, scleromalacia, keratoconjunctivitis sicca
- pulmonary: pleural effusion, fibrosing alveolitis, obliterative bronchiolitis
- neoplasm: lymphoma
Nodules: elbows+lungs
Neurological: peripheral neuropathy, cord compression - git: hepatosplenomegaly,
- cardiac: carditis, effusion,
- musculoskeletal: raynaud, carpal tunnel, osteoporosis, bursitis
- vasculitis
articular signs rheumatoid arthritis? (7)
Rheumatoid wrists Zhow BUMPSSs
- radial deviation wrist
- z deformity thumb
- boutonnière deformity
- ulnar deviation of fingers
- MCP
- pip
- swan neck
- symmetrical
- small and large joints, upper and lower limbs
Treatment rheumatoid arthritis
- Steroids for flares
- NSAIDs
- dmard: methotrexate
What is boutonnière deformity
Occurs in ra
Finger flexed at pip, hyperextended at dip
What is swan neck deformity
Occurs in ra.
Pip hyper extension, dip flexion