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
What is Felty’s syndrome? (3)
Rare autoimmune disease with triad
- Ra
- splenomegaly
- neutropenia
Also anaemia, thrombocytopenia, lymphadenopathy, weight loss, skin pigmentation, keratoconjunctivitis sicca, vasculitis / leg ulcers, nodules
Name 2 causes giant splenomegaly
- Parasitic infection: malaria, leishmaniasis
- myeloproliferative disorders: leukemia including CML, myelofibrosis
Name 4 radiographic features rheumatoid arthritis
- Periarticular osteoporosis
- marginal joint erosions
- joint subluxation
- joint space narrowing
Name 3 radiographic features osteoporosis
- Osteopenia
- vertebral # + non-ventebral #
- cortical thinning
Name 4 radiographic features Paget’s disease
- Bone expansion
- abnormal trabecular pattern
- osteosclerosis (thickening of trabecular/ spongy bone) + lysis
- pseudo-fractures
Name 4 radiographic features psoriatic arthritis
- Syndesmophytes + enthesophytes
- juxta-articular new bone
- sacroilitis
- bone sclerosis
- proliferative enthesis erosions
Name 4 radiographic features osteoarthritis
LOSS
- loss of joint space
- osteophytes
- Subchondral sclerosis
- subchondral cysts
Joint deformity
Paget’s disease biochemical abnormalities?
- Alp very high!
- phosphate normal
- calcium normal
- fgf 23 normal
- PTH normal / high
- 25 (oh)d normal / low
Renal osteodystrophy biochemical abnormalities? (3)
- fgf 23 very high! (Suppress P reabsorption + vit D synth, stim by high levels P + vit D)
- PTH very high!
- Alp high
- phosphate normal / high
- calcium normal / low
- 25 (oh)d normal / low
Primary hyperparathyroidism biochemical abnormalities? (2)
- calcium high/very high!
- PTH very high!
- fgf 23 normal/ high
- Alp normal / high
- phosphate normal / low
- 25 (oh)d normal / low
Which serum tests are often positive in rheumatoid arthritis (2)
- Rheumatoid factor (sensitivity 70%)
- anti - citrullinated peptide antibodies (ACPAs) (sensitivity 70%, specificity > 95%)
Which serum tests are often positive in SLE (6)
- ANA (100%)
- anti-dsDNA
- anti-Sm
- antiphospholipid antibodies
- low complement C3 = active SLE
- anti-histone antibody = drug induced lupus (80%)
Which serum tests are often positive in systemic sclerosis (2)
- Anti-topoisomerase - 1 (anti scl - 70 ) (15%)
- anti-rna polymerase (15%)
- Anti-centromere antibody= localised cutaneous systemic sclerosis (sensitivity 60%,specificity 98%)
Which serum antibody tests are often positive in polymyositis, dermatomyositis
- anti-JO-1 (anti - histidyl - trna synthetase) (20-30%)
- Anti-mi-2
Which serum antibody tests are often positive in Sjogren’s syndrome
- Anti-la antibody (anti-ss-b) (60%)
- anti-ro antibody (anti-ss - A) (40 - 80%)
Most common site gout?
First metatarsophalangeal joint
Most common site pseudogout?
CPPd crystal
Hand/ wrist,ankle, knee or hip
Name 5 joint features of osteoarthritis
- dip
- pip
- first CMC joints
- knees, hips, back, neck
- Heberden’s nodes (dip )
- Bouchard’s nodes (pip)
Name 4 causes back pain
- Mechanical: soft tissue
- destructive: malignancy, infection,
- inflammatory: axial spondyloarthritis, psoriatic spondyloarthritis
- other: #, prolapsed disc, spinal stenosis, Paget’s disease,
Name 5 NSAIDs
- Celecoxib (low risk gi bleed ) (selective cox 2 inhibitor)
- etoricoxib (low risk gi bleed )
- ibuprofen ( medium risk gi bleed ) (non-selective Cox inhibitor)
- diclofenac ( medium risk gi bleed )
- indomethacin ( high risk gi bleed )
Name 5 dmards for ra
- Methotrexate 10 - 25 mg weekly po (monitor FBC, lft)
- sulfasalazine 2-4 g daily
- hydroxychloroquine (monitor visual function)
- gold / myocristin 50 mg 4 weekly IM (monitor FBC, urinalysis )
- ciclosporin A (monitor bp, egfr )
Name 4 dmards for SLE
- Hydroxychloroquine 200-400 mg daily po
- azathioprine 1 - 2,5 mg /kg daily orally (monitor FBC, LFT)
- cyclophosphamide (monitor FBC, LFT,eGFR)
- mycophenolate mofetil (mmf) (monitor FBC, LFT)
Which is the only dmard used for both ra and SLE
Hydroxychloroquine
Name 3 biological drugs for ra
- Rituximab
- etanercept
- abatacept
Name biological drugs for SLE
Belimumab
Name 3 systemic signs rheumatoid arthritis
- fever!
- weight loss
- fatigue
- susceptible to infection
Name 3 haem signs rheumatoid arthritis
- Thrombocytosis
- anaemia
- eosinophilia
Name 4 ocular signs rheumatoid arthritis
- scleritis
- episcleritis
- scleromalacia
- keratoconjunctivitis sicca (sjogrens - dry eyes)
Name 5 pulmonary manifestations of rheumatoid arthritis
- effusion
- fibrosing alveolitis
- obliterative bronchiolitis
- Nodules
- Caplan’s syndrome
Name 2 nodular manifestations of rheumatoid arthritis
- Elbows
- lungs
→ sinuses, fistulae
Name 3 neurological manifestations of rheumatoid arthritis
- Peripheral neuropathy
- cord compression
- mononeuritis multiplex
Name neoplastic manifestations of rheumatoid arthritis
Lymphoma
Name 2 lymphatic manifestations of rheumatoid arthritis
Hepatosplenomegaly
Felty’s syndrome
Name 5 cardiac manifestations of rheumatoid arthritis
- Effusion
- carditis: myo, endo, peri
- conduction defects
- coronary vasculitis
- granulomatous aortitis
Name 6 musculoskeletal manifestations of rheumatoid arthritis
- Raynaud
- carpal tunnel
- osteoporosis
- bursitis
- Muscle wasting
- tenosynovitis
Name vascular manifestations of rheumatoid arthritis
Vasculitis leading to:
- digital arteritis
- ulcers
- pyoderma gangrenosum
- mononeuritis multiplex
- visceral arteritis
Name 10 symptoms fibromyalgia
Common:
- widespread pain, unresponsive to NSAIDs, analgesics, physio
- fatigueability
- disability
- broken, non-restorative sleep (amitryptilline to treat)
- low affect, irritability, poor concentration
Variable locomotor symptoms
- early morning stiffness
- feeling Of swelling in hands
- distal finger tingling
Additional variable non-locomotor symptoms
- non-throbbing bifrontal tension headache
- colicky abdominal pain, bloating, IBS
- irritable bladder
- allodynia: hyperacusis, dyspareunia, discomfort when touched
- frequent side effects with drugs
Describe the European league against rheumatism ELAR / American college of rheumatology ACR 2010 criteria for diagnosis of rheumatoid arthritis
Joints affected (0-5)
- 1 large (score o)
- 2-10 large (1)
- 1-3 small (2)
- 4-10 small (3)
- > 10 joints, with at least 1 small (5)
Serology (0-3)
- negative rf and ACPA (o)
- low positive rf or ACPA (2)
- high positive rf or ACPA (3)
Duration of symptoms
- <6 weeks (o)
- > 6 weeks ( 1 )
Acute phase reactants
- Normal crp+esr (o)
- abnormal CRP / ESR (1)
Score 6 or more = definite RA.
What is used to monitor rheumatoid disease activity
DAS28 (disease activity score 28):
- count swollen joints
- count tender joints
- measure ESR
- note patient global health assessment (1-100)