Rheumatology Flashcards
SLE: type of hypersensitivity reaction
Type 3
SLE associations
HLA B8, DR2, DR3
SLE epidemiology
Young adults
Black Americans
SLE symptoms
fatigue
fever
mouth ulcers
lymphadenopathy
SLE skin features
malar (butterfly) rash: spares nasolabial folds
discoid rash: scaly, erythematous, well demarcated rash in sun-exposed areas. Lesions may progress to become pigmented and hyperkeratotic before becoming atrophic
photosensitivity
Raynaud’s phenomenon
livedo reticularis
non-scarring alopecia
SLE MSK features
arthralgia
non erosive arthritis
SLE CVS features
Pericarditis and myocarditis
SLE respiratory symptoms
pleurisy
fibrosing alveolitis
SLE renal symptoms
proteinuria
glomerulonephritis (diffuse proliferative glomerulonephritis is the most common type)
SLE neuropsychiatry symptoms
anxiety and depression
psychosis
seizures
SLE antibodies
ANA (v sensitive so if negative rules it out)
anti-dsDNA (specific)
anti-Smith, anti-Ro and anti-LaS
SLE monitoring
ESR
Low C3 and C4
SLE management
Hydroxychloroquine
SLE pregnancy
Associated with neonatal heart block
RA management
- Short course oral pred to go into remission
+ methotrexate
(other options sulfalazine, lefluonamide)
RA monitoring
CRP and DAS28 (disease burden(
When to use a TNF alpha blocker?
If 2 DMARDs have failed
- etanercept, infliximab, adalimumab
When to use rituximab in RA
anti-CD20
Etanercept SE
reactivation of TB (need to have CXR prior to starting)
RA antibodies
Anti CCP if positive is diagnostic
Stills disease diagnostic indicator
Very raised ferritin
what is stills disease?
Stills disease is a rare form of RA that has a bimodal distributioni
Stills disease symptoms
arthralgia
elevated serum ferritin
rash: salmon-pink, maculopapular
pyrexia
typically rises in the late afternoon/early evening in a daily pattern and accompanies a worsening of joint symptoms and rash
lymphadenopathy
Stills disease antibodies
ANA and RF positive
Stills disease management
NSAIDs –> Steroids –> methotrexate
Behcets syndrome age
Young adults, smokers
Triad for Behcets
- Oral ulcers
- Anterior uveitis
- Genital ulcers
Behcets management
- steroids
- cyclophosphamide, etanercept, rituximab
Sjogrens what is there an increased risk of
Lymphoid malignancyS
Sjogrens sx
Dry eyes, dry mouth
Arthralgia
Raynauds
Sjogrens ix
rheumatoid factor (RF) positive in nearly 50% of patients
ANA positive in 70%
anti-Ro (SSA) antibodies in 70% of patients with PSS
anti-La (SSB) antibodies in 30% of patients with PSS
Schirmer’s test: filter paper near conjunctival sac to measure tear formation
histology: focal lymphocytic infiltration
also: hypergammaglobulinaemia, low C4
Sjogrens management
Artificial saliva, pilocarpine
GCA fundoscopy
Pale optic discs and swollen optic nerves
Mx GCA
If no visual loss - high dose oral pred
If visual loss - IV methylpred
SLE complement levels
C4 is low
Giut precipitating factor
IndapamideC
Cryoglobulinaemia
arthralgia, purpura, skin ulcers
Cryoglobuliaemia associations
HIV
Hep C
Cryoglobulinaemia mx
Symptomatic control
GCA cause of vision loss
Anterior ischaemic optic neuritis
Ank spon genes
HLA B27
GCA classic symptoms
reduced lateral flexion
reduced forward flexion - Schober’s test - a line is drawn 10 cm above and 5 cm below the back dimples (dimples of Venus). The distance between the two lines should increase by more than 5 cm when the patient bends as far forward as possible
reduced chest expansion
GCA other symptoms
Apical fibrosis
Anterior uveitis
Aortic regurgitation
Achilles tendonitis
AV node block
Amyloidosis
and cauda equina syndrome
peripheral arthritis (25%, more common if female)
ank spon xr findings
- XR
sacroiliitis: subchondral erosions, sclerosis
squaring of lumbar vertebrae
‘bamboo spine’ (late & uncommon)
syndesmophytes: due to ossification of outer fibers of annulus fibrosus
chest x-ray: apical fibrosis
GCA mx
- regular exercise
- NSAIDs
- Physio
- DMARDs if peripheral symptoms
RA gene
HLA DR4
Antiphospholipid antibodies
antibodies
anticardiolipin antibodies
anti-beta2 glycoprotein I (anti-beta2GPI) antibodies
lupus anticoagulant
thrombocytopenia
prolonged APTT
Antiphopholipid management
- Primry thromboprophylaxis - low dose aspirin
- Secondary thromboprophylaxis
initial venous thromboembolic events: lifelong warfarin with a target INR of 2-3
recurrent venous thromboembolic events: lifelong warfarin; if occurred whilst taking warfarin then consider adding low-dose aspirin, increase target INR to 3-4
arterial thrombosis should be treated with lifelong warfarin with target INR 2-3
What is antiphospholipid associated with?
SLE
HLA B27
Ank spon
HLA B8
Primary biliary cholangitis
HLA B51
Behcets disease
HLA DQ2
Coeliac disease
HLA DR3
Insulin dependent diabetes
Treatment if T score <-2.5 but eGFR <35
Denosumab (CI in hypocalcaemia and hypophosphataemia)
Dose of oral pred in GCA
1mg/kgq
Limited sclerorsis
CREST
calcinosis
raynauds
oesophageal dysfunction
sclerodactyly
telengiectasia
anti-centromere
Diffuse sclerosis
Anti Scl
Feltys syndrome
- RA
- Neutropenia
- Splenomegaly
Ank spon mx
- physio
- DMARD
Preisers disease
Bilateral idipathic avascualr necrosis of the scaphoid bone
2 x NSAIDs in ank spon next line management
Biological agent e.g. etanercept or adalimumab
DMARDS ARE NOT USED IN ANK SPON
SLE renal classification
I: Minimal change
II: mesangial
II: focal segmental proliferative
IV: diffuse proliferative
V: membranous
VI: glomerulosclerosis
Class I/II SLE renal disease management
Hydroxychloroquine
Class III/IV SLE renal disease management
high dose steroids + IV cyclophosphamide/mofetil
Class VI SLE renal disease management
Usually too advanced and not treated
osteomalacia bloods
Vitamin D deficiency:
- raised ALP
- low calcium
- low phosphate
- may have raised PTH
Osteomalacia sx
Difficulty walking up stairs
Muscle weakness
Boney tenderness
Osteomalacia XR finding
Translucent bands
DMARD unsafe for male to take if trying for baby
azathioprine (reduces sperm count)O
Osteoporosis management
- alendronic acid
- raloxifene (oestrogen receptor modulator)
- terparatide (v expensive, used in severe cases)
*strontium (used rarely as increased risk of CVS disease and VTE)
Diffuse systemic sclerosis antibodies
anti-SCL70
Limited systemic sclerosis antibodies
anti-centromere (CREST syndrome)
Pagets treatment
Bisphosphonates
Felty syndrome
RA, neutropenia, splenomegaly
Rugger jersey finding on XR
Renal osteodystrophy
Ank spon XR findings
Syndesmophytes
Tramlines
Bamboo spine
Subchondral sclerosis
Behcets disease
- genital and oral ulcers
- uveitis
- thrombophlebitis
If a newborn baby has this antibody then they have an increased risk of neonatal heart block
Anti-Ro
Polymyositis cause of renal injury
Acute tubular necrosis
When to avoid etanercept
Previous MS diagnosis
SLE most common tissue involved
Joints
Most common respiratory symptoms of SLE
Pleural effusion
Bloods RA
Normochromic normocytic anaemia (anaemia of chronic disease)
SLE opthalmological signs
Cataracts (will require a lens replacement)
Polymyalgia rheumatica steroid dose
Oral 25mg with calcium and vitamin D supplementation
Pagets disease symptoms
Bowed legs, deafness, FHx of osteosarcoma
Polyarteritis nodosa, most common blood finding
Elevated creatinine
RA management
- Steroids
- DMARDS (methotrexate, sulfalazine, hydroxychloroquine)
- TNF alpha blockers once 2 DMARDs have failed e.g. etanercept, infilximab, adalimumab or anti CD20 rituximab
RA pregnancy safe drugs
Sulfalazine and hydroxychloroquine
When to stop methotrexate in pregnancy
Stop 6 months before conception
Antiphospholipid management
Primary prophylaxis: low dose aspirin
Secondary prophylaxis: warfain INR 2-3
- if having recurrent thrombis 3-4
Anti Jo
Polymyositis
RA rituximab reactivation
Hep B
SLE bloods
normochromic normocytic anaeamia
RA HLA
HLA DR4
Polymyositis ix
Muscle biopsy
Polymyositis antibody
anti-Jo-1
Dermatomyositis antibody
anti-Mi-2
Limited vs diffuse systemic sclerosis skin coverage
Limited: below elbows and below knees
Diffuse: whole body
Haemochromatosis
Hepatic injury, tanned, ED
Felty syndrome
HLA-DRW4
Eosinophilic fasciitis
swelling and tenderness in fingers
peau d’orange
hypergammaglobulinaemia
raised eosinophils
Neonatal lupus antobody
anti-Ro