Rheumatology Flashcards
What is an arthropathy?
DIsease of the joint
What is an arthritis?
Inflammation of the joint
What is arthralgia?
Pain in the joint
What is osteoarthritis?
Erosion of the joint cartilage
What causes OA?
Can be primary due to use or secondary to most things that damage joints
What should you look for on an XR for OA?
Loss of joint space
Osteophytes
Sclerosis
Subchondral cysts
How do you treat OA?
Pain management: analgesia and opiates
Physio
Joint replacement
What are the two broad categories of arthritis?
Inflammatory and non-inflammatory
What is the main form of non-inflammatory arthritis
Osteoarthritis
What are the four subcategories of inflammatory arthritis?
Seropositive
Seronegative
Infectious
Crystal induced
What are the two forms of crystal induced arthropathies?
Gout
Pseudogout
What is gout?
Negatively bifringic urate crystals deposit in joints
What causes gout?
Hyperuricemia- Renal disease, red meat, alcohol and seafood
Precipitation triggered by: dehydration, trauma or surgery
How does gout present?
Intense pain, redness, heat and swelling that lasts for 7-10 days.
Most common site is 1st MTP joint
How do you diagnose gout?
Look for negatively bifringic needle shaped crystals in synovial fluid
How do you treat gout?
NSAIDs Steroids Analgesia Colchicine Allopurinol- to lower urate but can make flare worse so don't start when having one.
What is pseudogout?
Calcium pyrophosphate crystals in joint
Where is pseudogout often seen?
Knee
Wrist
Ankle
What causes pseudogout?
Cause unknown but often seen with OA
How do you treat pseudogout?
NSAIDs
Steroids
Colchicine
What is the main form of infectious arthritis?
Septic arthritis
What is septic arthritis?
Infection in the joint capsule
How can the joint capsule get infected?
Direct inoculation
Hematogenous spread
SPread from bone or soft tissue infection
What bacteria commonly cause septic arthritis?
S. Aureus
Strep
Coag -ive staph
Neisseria gonorrhoeae
How does septic arthritis present?
Severe pain
Redness
Swelling
Limited movement
How do you diagnose septic arthritis?
Look for bacteria in synovial fluid and exclude crystal arthropathies
How do you treat septic arthritis?
Presume S. Aureus so start high does flucloxacillin then switch to appropriate when diagnosed
If <5YO Ceftriaxone
What is rheumatoid arthritis?
Production of autoantibodies against synovial lining which can also attach articular cartilage and tendons
What antibodies are seen in RA?
Anti-CCP
How does RA present?
Mainly affects small joints- PIP not DIP
Symmetrical synovitis
Pain
Morning stiffness that takes >30 mins to ease
How can RA progress?
To large joints
C1/2 very problamatic
How do you diagnose RA?
Anti-CCP (prefered) or Rheumatoid factor
Raised CRP, ESR and plasma viscosity
Periarticular osteopenia and soft tissue swelling
US for inflammation
How do you treat RA?
DMARDs w/in 3 months of symptoms
Short term analgesia, NSAIDs and steroids
Biological therapy if resistant
Physio and OT etc
Give some examples of DMARDs
Methotrexate- 1st line but do NOT give in pregnancy
Sulfasalazine
Give some examples of biological agents
Anti-TNF alpha
Drugs ending in ‘-mab’
What does the DAS28 score measure?
RA disease state
What are the categories in DAS28?
<2.6- remision
2.7-5.1- Active
>5.1- Highly active
What is the DAS28 cut off score for receiving biological therapies?
> 5.1
What are the four seronegative arthropathies?
Ankylosing Spondylitis
Enteropathic Arthritis
Reactive Arthritis
Psoriatic Arthritis
Which antigen is often elevated in seronegative arthropathies?
HLA‐B27
CRP and ESR also elevated
What is Ankylosing Spondylitis?
Chronic inflammation of spine and SI joints
How does Ankylosing Spondylitis present?
Spine pain and stiffness
Morning stiffness which eases with exercise
Knee/hip arthritis
‘?’ spine- loss of lumbar lordosis and increased thoracic kyphosis
How do you diagnose Ankylosing Spondylitis?
HLA‐B27 test
Bamboo spine on XR
Spinal movement with Schober’s test (line 5cm below and 10cm above PSIC)
What complications can accompany ankylosing spondylitis?
Uvitis
Aoritis
Pulmonary fibrosis
Amyloidosis
How do you treat ankylosing spondylitis?
Physio, exercise, NSAIDs, anti-TNF inhibitors
Surgery for knee/hip
What is enteropathic arthritis?
Inflammatory arthritis of peripheral joints in patients with IBD
How does enteropathic arthritis present?
Asymmetrical large joint oligoarthritis
How do you treat enteropathic arthritis?
Manage underlying condition
What is reactive arthritis?
Arthritis in response to infection in other part of body- usually STI or GI
How does reactive arthritis present?
Large joint inflammation 1-3 weeks after infection
What is Reiter’s syndrome?
Uveitis, urethritis and arthritis combo associated with reactive arthritis.
What triad of complications is associated with reactive arthritis?
Uveitis, urethritis and arthritis- Reiter’s syndrome
How do you treat reactive arthritis?
Usually self limiting but can relapse.
Treat underlying infection and relieve symptoms.
What is psoriatic arthritis?
Can occur w/ or w/o skin psoriasis
How does psoriatic arthritis present?
Usually asymmetrical but can mimic RA in hands
Nail pitting and lifting (onycholysis)
What complications are associated with psoriatic arthritis?
Spondylitis
Dactylitis
Enthesitis
How do you treat psoriatic arthritis?
DMARDs
Anti-TNF alpha
Joint replacement
What are the five seropositive arthropathies we need to know?
Rheumatoid Arthritis Systemic sclerosis Systemic lupus erythematosus Vasculitis Sjogren's disease
What is systemic sclerosis?
Fibrosis of skin and subcutaneous tissue but can get organ involvement.
What organs can be involved in systemic sclerosis?
Vasomotor- Gives Raynaud’s Syndrome
Renal
Lungs
GI
What are the two forms of systemic sclerosis?
Limited- Peripheral skin and little organ involvement
Diffuse- Central skin problems and lots of organ involvement
What auto antibody is associated with limited systemic sclerosis?
Anti-centromere AB
What auto antibody is associated with diffuse systemic sclerosis?
Anti-Scl-70 AB
What is important to check when systemic sclerosis presents?
Renal function
Renal failure kills!!!!!
How do you treat systemic sclerosis?
Depends on symptoms: Raynaud's syndrome- CaC Blockers Renal involvement- ACEI GI involvement- PPI Lung disease- Immunosuppression
What is Sjogren’s Syndrome?
Autoimmune condition where lymphocytes infiltrate exocrine organs.
Associated with anti-RO and anti-LA AB
Can be primary or secondary to RA or SLE
How does Sjogren’s syndrome present?
Dry eyes and mouth Arthralgia Fatigue Parotid gland swelling Lung involvement
How do you diagnose Sjogren’s syndrome?
Need 4 of the following: Dry mouth for >3 months Dry mouth for >3 months Positive Schirmer's test (blotting paper on eyes) Abnormal salivary glands Positive salivary gland biopsy Positive RO and LA antibodies
How do you manage Sjogren’s syndrome?
Eye drops
Good dental care
Hydroxychloroquine for arthralgia and fatigue
Immunosuppres for lung involvement
What is Systemic Lupus Erythematosus?
Autoimmune condition what has a variable presentation
What systems can be involved in SLE?
Skin Joints Kidneys Blood cells Nervous system Vasculature Lungs GI
What causes SLE?
Inadequate clearing of apoptosed cell material leads to the development of antibodies against it.
What type of hypersensitivity reaction is SLE?
Type 3 as mediated by immune complexes
How does SLE present?
Variable
Give the systemic presentations of SLE
Fatigue
Fever
Weight loss
Give the MSK presentations of SLE
Arthralgia/myalgia
Arthritis
AVN
Give the dermatological presentations of SLE
Malar rash- Butterfly rash Photosensitivity DIscoid lupus Subcutaneous lupus Oral/nasal ulceration Raynaud's syndrome Alopecia
Give the renal presentation of SLE
Lupus nephritis
Give the respiratory presentations of SLE
Pleurisy Pleural effusion Pneumonitis PE Pulmonary hypertension Interstitial lung disease
Give the hematological presentations of SLE
Leukopenia
Lymphopenia
Anaemia
Give the neurological presentations of SLE
Seizures
Psychosis
Headaches
Meningitis
Give the CV presentations of SLE
Pericarditis pericardial effusion Pulmonary hypertension Sterile endocarditis IDH
Give the GI presentations of SLE
Hepatitis
Pancreatitis
Mesenteric vasculitis
How do you test for SLE?
FBC for anaemia leukopenia and thrombocytopenia
Urianalisis for glomerulonephritis
Image for organ involvement
Test antibodies
What auto antibodies are associated with SLE?
Anti-nuclear- Sensitive but not specific
Anti-dsDNA- SPecific but varies w/ disease activity
Anti-Sm- Specific but low sensitivity
C3/4- Decrease in diseased state
How do you treat SLE?
Variable
Skin- Hydroxychloroquine, steroids and NSAIDs
Arthritis/organ involvement- Azathioprine + steroids
If unresponsive use biological agents
How do you know if a drug is a biological agent?
Ends in ‘-mab’
How do you monitor SLE?
Check anti-dsDNA and C3/4
Urine for blood and protein
BP and cholesterol
What is vasculitis?
Inflammation of blood vessels
Leads to thickening, stenosis and occlusion
What are the two main categories of vasculitis?
Large vessel
Small/medium vessel
What does large vessel vasculitis affect?
Aorta and major branches
How does large vessel vasculitis present?
Low grade fever, malaise, night sweats, weight loss, arthralgia, fatigue
Claudications
Decrease pulse and bruits
How do you diagnose large vessel vasculitis?
Raised ESR, CRP and PV
MR angiogram
How do you treat large vessel vasculitis?
Decreasing course of steroids form 40-60mg at start
What are the two categories of small/medium vessel vasculitis?
ANCA positive
ANCA negative
How does small/medium vessel vasculitis present?
Fever, weight loss, purpuric rash, arthralgia, glomerulonephritis, lung opacity on XR
What is the most common form for ANCA positive small/medium vessel vasculitis?
Granulomatosis w/ polyangiitis (GPA or Wegener’s)
What addition features do Granulomatosis w/ polyangiitis (GPA or Wegener’s) have?
Nose bleeds
Deafness
Collapse of nose
How do you detect small/medium vessel vasculitis?
Raised ESR, PV and CRP U+E for renal involvement ANCA antibody Urinalysis for renal vasculitis CXR Biopsy affected area
How do you treat small/medium vessel vasculitis?
IV steroids
Cyclophosphamide
What is mixed connective tissue disease?
Mix of symptoms seen in other connective tissue diseases
What symptoms can be seen in mixed connective tissue disease?
Raynaud's Myositis Sclerodactyly Pulmonary hypertension Interstitial lung disease
What auto antibody is associated with mixed connective tissue disease?
Anti-RNP AB
Why do patients with mixed connective tissue disease need checked regularly?
To look for pulmonary hypertension
What is Antiphospholipid syndrome?
Leads to recurrent arterial/venous thrombosis
Get fetal loss
What is a defining feature of antiphospholipid syndrome?
Livedo reticularis- Mottled skin
How do you diagnose antiphospholipid syndrome?
Thrombocytopenia and prolonged APTT
Positive for: lupus anticoagulant, anticardiolipin and anti-beta 2 glycoprotein
How do you treat antiphospholipid syndrome?
Anticoagulate- Warfarin (LMWH is pregnant)
What are the three muscle conditions we need to know?
FIbromyalgia
Polymyalgia rheumatica and giant cell arteritis
Polymyositis and dermatomyositis
What is fibromyalgia?
Unexplained muscle pain and fatigue. DIsease of central pain processing
How does fibromyalgia present?
Persistent (>3m) widespread pain Fatigue/disrupted sleep Cognitive difficulties Anxiety/depression Got to rule out everything else
How do you treat fibromyalgia?
Self-management
Sympathy
Psych help
What is polymyalgia rheumatica?
Chronic inflammation and pain of hip and shoulder girdles in >50YO
Get morning stiffness lasting over 1 hour
How do you diagnose polymyalgia rheumatica?
No real diagnosis but have raised CRP, PV and ESR
How do you treat polymyalgia rheumatica?
Low dose steroids tapering off over 18 months
What does polymyalgia rheumatica predispose you to?
Giant Cell Arteritis
What is Giant Cell Arteritis?
Most common systemic vasculitis in older patients
How does Giant Cell Arteritis present?
Visual disturbances Headache Jaw claudications Scalp tenderness Fatigue Fever
How do you diagnose Giant Cell Arteritis?
Raised inflammatory markers Arterial biopsy (Specific but not sensitive)
How do you treat Giant Cell Arteritis?
Steroids (40-60mg) tapered over 24 months
What is polymyositis?
Symmetrical proximal muscle weakness in limbs leading to difficulties with activities
What causes polymyositis?
Potentially T-cell mediated cytotoxic process against muscle antigens
What complications can occur from polymyositis?
Dysphagia and interstitial lung disease
How do you diagnose polymyositis?
Raised inflammatory markers and CK
Need muscle biopsy- must show varying degrees of inflammation, necrosis and regeneration
What antibodies are associated with polymyositis?
Anti-ANA
Anti-Jo-1
ANti-SRP
How do you treat polymyositis?
Prednisolone and immunosuppression
What is dermatomyositis?
Same as polymyositis but with dermal features too
What additional features are seen in dermatomyositis?
V shaped rash on chest
Heliotrope rash
Gottron’s papules
How do you diagnose dermatomyositis?
Same as polymyositis
How do you treat dermatomyositis?
Same as polymyositis