Rheumatology Flashcards
What are the symptoms of rheumatoid arthritis?
Pain Stiffness Early morning stiffness >1 hour Joint swelling Small joints > large joints Symmetrical Persistent - generally accumulates over time
What are the signs of rheumatoid arthritis?
Synovitis Swan neck deformity boutonniere Z-thumb Ulnar deviation Rheumatoid nodules
What are the ocular features of rheumatoid arthritis?
Scleritis
Episcleritis
Sicca syndrome
What are the cardiorespiratory features of rheumatoid arthritis?
Pleural effusions Pulmonary nodules Pulmonary fibrosis Pericarditis Serositis
What are the extra-articular features of rheumatoid arthritis?
Ocular features Cardiorespiratory features Splenomegaly Peripheral neuropathy Anaemia Amyloidosis
What are the differential diagnoses for rheumatoid arthritis?
Polyarticular gout
Psoriatic arthritis
Osteoarthritis
SLE
What are the investigations for rheumatoid arthritis?
CRP/ESR FBC Bone/urate Immunology Radiograph Ultrasound MRI
What is rheumatoid factor?
IgM antibody
Directed against Fc portion of IgG Ab
Sensitivity around 70%
Specificity around 85%
What is CCP antibody?
Inflammation leads to cellular damage. Enzymatic process leads to the conversion of arginine residues to citrulline. Alteration of shape creates a foreign antigen from self - anti citrullinated cyclic peptide antibodies.
Sensitivity 66%
Specificity 90%
What are the x-ray changes in rheumatoid arthritis?
Peri-articular osteopenia Soft tissue swelling Erosion Joint destruction Subluxation
What can small joint ultrasound detect in rheumatoid arthritis?
Subclinical synovitis.
Allows for distinction between active disease and chronic inactive synovial thickening found in long-standing inactive disease.
What are the functional assessments of rheumatoid arthritis?
HAQ-DI - health assessment questionnaire disability index.
SF-36 - Short form 36
What score on the EULAR classification criteria would fulfil the classification criteria for RA?
6 or more
What is the system used for disease monitoring in rheumatoid arthritis?
DAS-28
What is the step-up approach in initiating therapy for rheumatoid arthritis?
Introduce and escalate single drug to max tolerated dose, if ongoing disease activity add a further drug.
What is the step-down approach to initiating therapy for rheumatoid arthritis?
Several drugs started at once and then gradually withdrawn.
What is the parallel approach to initiating therapy for rheumatoid arthritis?
Combination introduced at same time and maintained.
What is the initial therapy in rheumatoid arthritis?
NSAIDs
COX-2 inhibitors e.g. etoricoxib
Steroids e.g. oral prednisolone
When should DMARDs be offered in rheumatoid arthritis?
First line and within 3 months of symptom onset.
Which DMARDs can be offered in rheumatoid arthritis?
Methotrexate
Lefluonomide
Sulfasalazine
Hydroxychloroquine if mild or palindromic disease.
How often is methotrexate taken in rheumatoid arthritis?
Once weekly
What is methotrexate an antagonist of?
Folate
What are the side effects of methotrexate?
Usually mucosal or GI side effects.
What are the monitoring requirements for patients taking methotrexate?
FBC
LFTs
When is methotrexate contraindicated?
Pregnancy
what are the actions of sulfasalazine?
Immunomodulatory. Several actions, including against folate, T and b cells.
How often should sulfasalazine been taken for rheumatoid arthritis?
Daily pill
What are the side effects of sulfasalazine?
GI
Headache
Rash
Is sulfasalazine safe in pregnancy?
Yes - but folic acid 10mg daily, started 3 months pre-conception.
What is the criteria for commencing biologic therapy?
Must have failed on at least 2 csDMARDs, one of which must be methotrexate unless contraindicated.
Must have severe disease ie. DAS-28 >5.1 on at least 2 occasions one month apart.
Treatment to be continued only if adequate response within first six months, defined as a reduction in DAS-28 of >1.2.
What screening should take place before commencement of DMARDs?
Viral hepatitis and HIV
Varicella
CXR and IGRA (TB)
Vaccination - influenza, pneumococcal
What are the contraindications for starting biologics?
Active infection Active or latent TB Pregnancy Malignancy Diverticular disease (IL-6)
What should be monitored in a patient on biologics?
Infections
Malignancy
Bloods (FBC, LFTs)
Awareness with vaccination
What is an example of a novel synthetic DMARD?
JAK inhibitors
What are the side effects of JAK inhibitors?
Side effects - viral infection including troublesome HSV infection
DVT risk in over 50s.
Who is involved in the MDT of a patient with rheumatoid arthritis?
Occupational therapists
Physiotherapists
Nurses
Podiatry
What are sernogeative spondyloarthropathies?
A group of diseases involving the axial skeleton and express a variety of extra-skeletal signs and symptoms. They are RF negative and associated with HLA-B27.
Give 6 examples of diseases that are seronegative spondyloarthropathies.
Psoriatic arthritis Ankylosing spondylitis Reactive arthritis Enteropathic arthropathy Juvenile idiopathic arthritis Behcet's disease
What are the symptoms of ankylosing spondylitis?
Inflammatory back pain Early morning stiffness Improves with exercise. Associated with peripheral arthritis. Enthesitis common.
Who gets ankylosing spondylitis?
M:F 5:1
Mean age on onset 3rd decade.
Which imaging is used to investigate ankylosing spondylitis?
X-ray
MRI (most helpful)
How should ankylosing spondylitis be treated?
NSAIDs and anti-TNF.
What is reactive arthritis?
Asymmetrical inflammatory arthritis that usually occurs after a diarrhoeal illness or urethritis.
What are the differential diagnosis for reactive arthritis?
Post-viral arthritis Reactive arthritis SLE Psoriatic arthritis Polyarticuclar gout Polyarticular OA
How many joints does reactive arthritis usually affect?
Mean = 3
Monoarticular in 10%
Which joints does reactive arthritis most commonly affect?
Knees
Ankles
Feet
What is the management of reactive arthritis?
Treat underlying infection Culture stool if diarrhoea Sexual health review X-ray of affected joint may show enthesitis with periosteal reaction Rest NSAIDs Intra-articular steroid DMARDs
What is the prognosis of reactive arthritis?
Most initial attacks resolve within 6 months.
50% relapse
20% chronic relapsing course
30% establishes, often with lower limb involvement.
What are the investigations for a suspected spondyloarthropathy?
Bloods: FBC, U&Es, LFTs ESR/CRP RF/Anti CCP antibodies HLA-B27 X-rays (hands, spine, pelvis) MRI
What might hand x-rays show in spondyloarthropathies?
DIP erosion
Lysis of terminal phalanges
Asymmetry
Pencil in cup deformity
What might spinal x-rays show in spondyloarthropathies?
Erosions
Vertebral squaring
Syndesmophytes
Fused spine (bamboo spine)
What might a pelvic x-ray show in spondyloarthropathies?
Sacroiliitis
What might and MRI show in spondyloarthropathies?
Enthesitis
What are the common extra-articular features of spondyloarthropathies?
Skin - psoriasis, pyoderma gangrenosum, erythema nodosum. Inflammatory bowel disease Urethritis and cervicitis Renal involvement - amyloidosis Thrombophilia Respiratory - pulmonary fibrosis
Which seronegative spondyloarthropathies is uveitis most common in?
Ankylosing spondylitis
Inflammatory bowel disease
What type of uveitis is most common in ankylosing spondylitis?
Anterior, unilateral and acute
Which type of uveitis is most common in psoriatic arthritis and inflammatory bowel disease?
Posterior, bilateral and chronic
Which type of cardiovascular changes are often seen associated with seronegative spondyloarthropathies?
Aortitis
Mitral valve insufficiency
Fibrosis of the conduction system with varying degrees of AV block.
Which type of respiratory involvement is often seen associated with seronegative spondyloarthropathies?
Bilateral apical pulmonary fibrosis (relatively rare)
Restrictive lung disease.
What are the disease assessment tools for ankylosing spondylitis?
BASDAI - Bath ankylosing spondylitis disease activity index.
BASFI - Bath ankylosing spondylitis functional index
BASMI - Bath ankylosing spondylitis metrology index.
Describe the BASDAI.
Gold standard for measuring and evaluating disease activity in ankylosing spondylitis. 6 questions measuring and evaluating 5 major symptoms: Fatigue Spinal pain Arthralgia or swelling Areas of localised tenderness Morning stiffness duration Morning stiffness severity.
Visual analogue scale from 1-10 with average of 2 stiffness scores.
Resultant score 0-50 divided by 5 to give BASDAI score.
Which BASDAI score would indicate suboptimal control of disease?
4 or greater.
What does the BASFI assess?
Function of a person with ankylosing spondylitis.
What is the treatment for spondyloarthropathies?
NSAIDs
Non-pharmacological (education, exercise, physio, self help groups)
Local steroids
DMARDs
Second line: TNF alpha blocker or IL-17 blocker
Additional therapy: analgesics, surgery.
What is vasculitis?
Inflammation of blood vessels.
How is vasculitis classified?
Primary - categorised by size of vessels:
- large, medium, small
Secondary - groups of diseases thought to be caused by underlying health conditions e.g. SLE, RA, Hep B/C, HIV
Give some examples of large vessel vasculitides.
Aortitis
Giant cell arterritis
Polymyalgia rheumatica
Takayasu arteritis
Give some examples of medium vessel vasculitides.
Kawasaki disease
Polyarteritis nodosa
Give some examples of small vessel vasculitides.
Anti-glomerular basement membrane disease.
Cryoglobulinemia
Cutaneous leukocytoclastic vasulitis
Drug induced vasculitis
Eosinophilic granulomatosis with polyangiitis