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For Phase 2
Katie KnappettPhase 3B
The Peer Teaching Society is not liable for false or misleading information…
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• Go over basic sciences from Phase 1• Aetiology / Risk Factors• Pathophysiology• Epidemiology• Clinical Presentation• Diagnostic Tests• Treatment
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Aims
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• Osteoarthritis• Rheumatoid Arthritis• SLE• Seronegative Spondyloarthropathies• Crystal Arthropathies
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Conditions
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Rheumatic diseases:• Joints• Connective Tissues
• Immunology
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“Rheumatology”
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The Peer Teaching Society is not liable for false or misleading information…
Joint Pain
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The Peer Teaching Society is not liable for false or misleading information…
Synovial Joints
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• Most common type of arthritis• Age-related; degenerative• Synovial joints affected
• Epidemiology– Prevalence increased with age. Uncommon <45– Familial
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Osteoarthritis
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• Age• Sex (F>M)• Genetic predisposition (polyarticular)
• Obesity• Local factors– Abnormal biomechanics– Occupation (farming, footballer…)
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Risk Factors for OA
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• There is a difference between structural OA and symptomatic OA
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Pathogenesis of OA
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Symptoms•Joint pain•Stiffness•Gelling•Instability•Loss of function•Worse in evening
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Clinical Features of OASigns
•Tenderness•Swelling•Limited ROM•Crepitus•Joint instability•Bony swelling (Heberden’s Nodes, DIPJ)•Muscle wasting•Altered gait
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The Peer Teaching Society is not liable for false or misleading information…
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• Bloods – ESR normal, hsCRP may be raised. RF and ANA negative.
• X-Rays – abnormal only when advanced• MRI – subchondral bone changes, early
cartilage injury• Arthroscopy• Aspiration of synovial fluid – viscous fluid with
few leucocytes
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Investigations
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The Peer Teaching Society is not liable for false or misleading information…
OA X-Ray shows LOSS
Loss of joint space
Osteophyte formation
Subchondral cysts
Subarticular sclerosis
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The Peer Teaching Society is not liable for false or misleading information…
Management of OA
Non-Pharmacological
Pharmacological
Surgical- Low impact activity- Weight loss- Physiotherapy
- Analgesia-Regular Paracetamol (1g QDS)-NSAIDs PRN (+PPI if regular)
- Joint Replacement
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• Inflammatory• Autoimmune disease• Chronic symmetrical, deforming, polyarthritis
of synovial joints• Systemic involvement
• Typically female patients aged 30-50
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Rheumatoid Arthritis
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• Female sex• Genetic predisposition• Smoking
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Risk Factors for RA
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• Widespread persistent synovitis • Synovial hypertrophy• Synovial proliferation• Inflammatory infiltration• “Pannus” of inflamed synovium • Damages underlying articular cartilage by
blocking nutrition / direct cytokine effect• Cartilage becomes thinned & bone is exposed
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Pathophysiology of RA
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Slowly progressive, symmetrical, peripheral polyarthritis evolving over weeks – months.
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Clinical Features of RA
Symptoms•Pain & Stiffness typically in the morning•Tiredness•Systemically unwell•Disturbed sleep
Signs•Inflammation
• Redness• Heat• Swelling• Pain
•Limited ROM•Muscle wasting•Deformities
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The Peer Teaching Society is not liable for false or misleading information…
Deformities in RA
Ulnar Deviation
Z Thumb
Boutonniere & Swan neck deformities
Joint Subluxation(wrist/MCPJ)
Muscle Wasting
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The Peer Teaching Society is not liable for false or misleading information…
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– Subcutaneous nodules– Firm, intradermal– Occur over pressure points (elbows, finger joints,
Achilles tendon)
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Rheumatoid Nodules
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Ring of macrophages and fibroblasts
Cuff of connective tissue containing lymphocytes and
plasma cells
Necrotic centre
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The Peer Teaching Society is not liable for false or misleading information…
Extra-Articular Features of RA• RA is a SYSTEMIC disease
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The Peer Teaching Society is not liable for false or misleading information…
Investigations-Bloods
- Raised ESR- Normocytic anaemia- RF may be negative at the start, becoming positive in 80%- ANA +ve in 30%- Anti-CCP
-X-rays- Decreased joint space- Bony erosions- Subluxation- Carpal destruction
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The Peer Teaching Society is not liable for false or misleading information…
Management of RANon-Pharmacological Pharmacological
Surgical
- Regular exercise- Physiotherapy-Occupational therapy- Orthotics (e.g. wrist splint)
-NSAIDs- Ibuprofen- Consider COX II selective if needing max doses (e.g. Celecoxib)- PPI cover
- Steroids- Intra-articular- Systemic
- DMARDS
- Joint replacement- Pain relief, improve function
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• Problem: Inflammation• Solution : Stop the inflammation!
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Disease-Modifying Drugs (DMARDs)
Sulfasalazine MethotrexateCiclosporinGoldAzathioprinePenicillamineHydroxychloroquine
Sulfasalazine MethotrexateCiclosporinGoldAzathioprinePenicillamineHydroxychloroquine
Biologics:-Anti-cytokine treatments
- Infliximab (anti -TNF-α antibody)- Etanercept (TNF-α receptor blocker)
Biologics:-Anti-cytokine treatments
- Infliximab (anti -TNF-α antibody)- Etanercept (TNF-α receptor blocker)
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The Peer Teaching Society is not liable for false or misleading information…
RA vs OA
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RA vs OARheumatoid
ArthritisOsteoarthritis
Pain Eases with use Increases with use
Stiffness Significant (>60 mins)Early morningAfter rest
Not prolonged (<30 mins)Morning/Evening
Swelling Synovial +/- bony Bony / None
Inflammation Hot, red joints No inflammation
Demographics Young, FH Older, occupation
Joint distribution Small jointsHands & feet
1st CMCJ, DIPJKnees
NSAIDs Good response Less convincing response
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• Inflammatory multisystem disorder
• Autoantibody (ANA)• Deposition of immune
complexes
Most common Sx – rash & arthralgiaMost serious Sx – renal & cerebral involvement
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Systemic Lupus Erythmatosus
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• Afro-Caribbean / Asian ethnicity• Female: Male ratio is 9:1• Peak age onset 20-40
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SLE Epidemiology
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• ? Cause• Predisposing Factors– Genetics (HLA A1, B8, DR3; Complement
deficiencies, Family history)– Sex Hormone Status (Premenopausal women,
XXY, HRT can cause flare up)– Drugs (hydralazine, isoniazid, penicillmine can
cause mild SLE)– EBV ?trigger for SLE
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SLE Aetiology
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• Cells die by apoptosis; self-antigens presented to immune system for phagocytosis– Antibodies to these self-antigens are produced– Immune system fails to inactivate B and T cells
responding to these self-antigens• Autoantibody production • Complement activation• Neutrophil influx• Inflammation• Abnormal cytokine production
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SLE Pathophysiology
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• Skin/Kidneys– Deposition of complement and IgG antibodies– ↑ neutrophils and lymphocytes– Vasculitis
• Joints– Immune complexes deposited in synovium
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SLE Pathology
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The Peer Teaching Society is not liable for false or misleading information…
SLE Clinical Features- Great variety!- Most patients: fatigue, arthralgia, skin involvement- Major organ involvement is less common, but more serious
- Great variety!- Most patients: fatigue, arthralgia, skin involvement- Major organ involvement is less common, but more serious
SKIN>85% of cases
“Butterfly” erythema
PhotosensitivityMalar/Discoid rashLivedo reticularis
Raynaud’sAlopecia
JOINTS/MUSCLES>90% have joint involvement
Like RA – symmetrical small jointsPainful but clinically normal
Deformity is RARE
HEART/CVS25% of casesPericarditis
Pericardial effusionsMyocarditis
Cardiomyopathy↑IHD/Stroke
Antiphospholipid syndrome
LUNGS>50% of cases
Recurrent pleurisyPleural effusions
PneumonitisPulmonary fibrosis
Intrapulmonary haemorrhage
(vasculitis)
KIDNEYS30% of cases
Lupus NephritisGlomerulonephritis
NERVOUS SYSTEM60% of casesDepression
Severe psychiatric disturbanceEpilepsy
Migraines
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The Peer Teaching Society is not liable for false or misleading information…
SLE Clinical Features
ORDERHISANA
ORDERHISANA
Oral ulcersRash (malar)Discoid rash
Eye involvementRenal disorders /
recurrent abortionHaematologicalImmunological
SerositisArthritis
Neurological involvementAlopecia
Oral ulcersRash (malar)Discoid rash
Eye involvementRenal disorders /
recurrent abortionHaematologicalImmunological
SerositisArthritis
Neurological involvementAlopecia
Diagnostic Criteria1.Malar (butterfly) rash2.Discoid rash3.Photosensitivity4.Oral ulcers5.Arthritis6.Serositis (pleutiris / pericarditis)7.Renal disorders (persistent proteinuria)8.CNS disorders (seizures / psychosis)9.Haematological disorders (haemolytic anaemia, leukopenia, lymphopenia, thrombocytopenia)10.Immunological disorders (Antiphospholipid antibody, anti-DNA antibody, anti-SM antibody)11.Antinuclear antibody positive in 95%
Diagnostic Criteria1.Malar (butterfly) rash2.Discoid rash3.Photosensitivity4.Oral ulcers5.Arthritis6.Serositis (pleutiris / pericarditis)7.Renal disorders (persistent proteinuria)8.CNS disorders (seizures / psychosis)9.Haematological disorders (haemolytic anaemia, leukopenia, lymphopenia, thrombocytopenia)10.Immunological disorders (Antiphospholipid antibody, anti-DNA antibody, anti-SM antibody)11.Antinuclear antibody positive in 95%
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The Peer Teaching Society is not liable for false or misleading information…
SLE InvestigationsRoutine Bloods
Low WCC (neutophils and lymphocyres)
Low plateletsNormocytic anaemia/Haemolytic anaemia
Raised ESRNormal CRP
Raised Urea and Creatinine in renal
involvement
Autoantibodies
ANAAnti-dsDNA
Anti-RoAnti-LaAnti-SM
Antiphospholipid antibodies (in APS)
Complement↓ C3 and C4
HistologySkin/Renal biopsy –
deposition of IgG and complement
complexes
ImagingCT Head – infartcs/
Haemorrhage/ cerebral atrophy
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The Peer Teaching Society is not liable for false or misleading information…
Management of SLENon-Pharmacological
Pharmacological
- Avoidance of sunlight / sunblock-Reduce CV Risk factors-Rheum referral
- NSAIDs for arthralgia, serositis- Hydroxychloroquine for joint/skin problems if NSAIDs insufficient. - High dose prednisolone for severe episodes. Other immunosuppresives/steroid sparing agents (cyclophosphamide, azathioprine, methotrexate) can be used.- Longterm anticoagulant in APS
Surgical
- Renal transplant
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The Peer Teaching Society is not liable for false or misleading information…
Prognosis of SLE• Episodic relapsing/remitting course• 10 year survival 90%• Deaths <age 50 usually due to cerebral/renal
involvement, or infection• >50, deaths due to stroke / CAD• Increased lymphoma risk• Fertility usually normal though increased
miscarriages
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• Familial; HLA-B27• Different distribution of joint involvement– Spine/Sacroiliac joints– Asymmetrical large joint oligo- or monoarthropathies
• Enthesitis (inflammation of site of attachment of tendon/ligament to bone)
• Extra-articular features• No RF production (“Seronegative”)
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Seronegative Spondyloarthropathies
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• 3 main conditions– Ankylosing Spondylitis– Psoriatic Arthritis– Reactive Arthritis
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Seronegative Spondyloarthropathies
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• Inflammatory spinal disorder• Affects young adults• Men present earlier– M:F age 16 is 6:1– M:F age 30 is 2:1
• 95% are HLA-B27 +ve
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Ankylosing Spondylitis
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The Peer Teaching Society is not liable for false or misleading information…
Clinical Features of ASEarly Features / Presentation
-Typically young male-Low back pain / stiffness
-Buttock pain-Worse in the morning; relieved by exercise
-Episodic but persistent for 3/12
Early Features / Presentation-Typically young male
-Low back pain / stiffness-Buttock pain
-Worse in the morning; relieved by exercise-Episodic but persistent for 3/12
Late Features-Kyphosis
-Neck hyperextension (question mark posture)-Spino-cranial ankylosis
Late Features-Kyphosis
-Neck hyperextension (question mark posture)-Spino-cranial ankylosis
Associations
-Chest pain-Hip involvement
-Knee involvement-Enthesitides – plantar
faciitis- Crohn’s/UC/Amyloid
-Psoriaform rashes-Iritis / sterile uveitis
Associations
-Chest pain-Hip involvement
-Knee involvement-Enthesitides – plantar
faciitis- Crohn’s/UC/Amyloid
-Psoriaform rashes-Iritis / sterile uveitis
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• High sensitivity and specificity• 3 out of the following in adults under 50
indicates AS:– Morning stiffness >30 mins– Improvement with exercise but not rest– Awakening due to back pain in the 2nd half of the
night only– Alternating buttock pain
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Classification Criteria
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• Clinical diagnosis• Radiological findings – – Early: Normal, or
erosions/sclerosis affecting both sides of lower sacroiliac joints
– Late: Squaring of vertebra, “bamboo spine”
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AS Investigations
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The Peer Teaching Society is not liable for false or misleading information…
Management of ASNon-Pharmacological
Pharmacological
Surgical
- Exercise, not rest-Intense exercise regimens
-NSAIDs for pain / stiffness- Sulfasalazine / Methotrexate help peripheral arthritis / enthesitis-Infliximab
-Long term bisphosphontes to help prevent osteoporotic spinal fractures
- Spinal osteotomy
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• Arthritis / Enthesitis in patients with psoriasis or FH or psoriasis
• Skin disease may develop after the arthrtitis
• Asymmetrical arthritis involving DIPJ and spine• Dactylitis (due to synovitis/tenosynovitis)• Arthritis mutilans
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Psoriatic Arthritis
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• Responds to:– NSAIDs– Methotrexate– Cyclosporin– Anti-TNFα Therapies
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Psoriatic Arthritis Treatment
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• Large joint mono- or oligoarthritis occurring following an infection
• Men > Women
• Typical triggers– NSU e.g. Chlamydia trachomats– Gut infections; salmonella, shigella, yersinia
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Reactive Arthritis
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• May be chronic or relapsing
• Management:– Rest– Splint joints– NSAIDs / Steroids– Consider sulfasalazine / Methotrexate– Treating original infection has little benefit
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Reactive Arthritis
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• “Reiters Syndrome”– Can’t See, Can’t Pee, Can’t climb a tree….
– Reactive Arthritis– Urethritis– Conjuncivitis
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Reactive Arthritis
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• Gout/Pseudogout
• 2 main types of crystal involved– Soduim Urate– Calcium pyrophosphate
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Crystal Arthritis
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• Inflammatory arthritis• Hyperuricaemia• Intra-articular sodium urate crystals• VERY painful
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Gout
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• Uric acid is the end product of purine metabolism– Blood levels depend on purine synthesis, dietary
purines and elimination of urate by the kidney/intestine
• Risk factors for hyperuricaemia (:. Gout!)– Renal function– Body weight– Blood pressure– Alcohol intake
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Hyperuricaemia
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• Aggressive induction/cessation of hypouricaemic therapy (Allopurinol)
• Alcohol / shellfish binges• Sepsis / MI / Acute severe illness• Truma / Surgery / Dehydration (diuretics)
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Precipitants of Gout Attack
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• Middle aged – older men• Sudden onset (ususally during the night)• Agonising pain• Red, shiny joint (“polished apple”)• Tender
• Chronic gout: urate deposits (tophi) found in peripheries
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Clinical Features of Gout
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• Clinical picture is diagnostic, as is the response to treatment
• Joint Aspiration & Microscopy of Synovial fluid – Sodium Urate seen which is “negatively birefringent needles under polarised light”
• X-Ray – soft tissue swelling, periarticular erosions, normal joint space
• Bloods – raised serum uric acid (>600µmol/L)
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Investigations of Gout
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• Strong NSAID e.g. naproxen Or• Colchicine Or• Steroids
• Prevent future attacks by avoiding high purine foods, alcohol XS, weight loss
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Management of Acute Gout
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• Reduction of serum urate with long-term Allopurinol (Inhibitor of Xanthine oxidase which converts Xanthine to Urate)
• Start alongside NSAID/Colchicine as initiation can precipitate acute attack
• Check serum urate levels and adjust dose accordingly
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Recurrent Gout
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• AKA Calcuim Pyrophosphate Dihydrate (CPPD) arthropathy
• Similar to gout but affects different joints; mainly wrist/knee
• More common in Women
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Pseudogout
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• Dehydration• Intercurrent illness• Hyperparathyroidism• Myxoedema• Low Phosphate or magnesium• Osteoarthritis• Haemochromotosis• Acromegaly
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Pseudogout Risk Factors
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• Diagnosis– Synovial fluid microscopy:• Positively birefringent rhomboidal crystals• Purulent aspirate
– Bloods• Raised ESR, CRP and WCC
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Pseudogout
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• Aspiration reduces pain• NSAID/Colchicine as with gout• Intra-articular steroid injection
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Pseudogout Treatment
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• Septic Arthritis• Systemic Scerosis• Polymyalgia Rheumatica• Vasculitis• Polymyositis / Dermatomyositis
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Other Rheumatology not covered