Rheum Cram Flashcards
Best test to screen for SLE?
ANA (almost 100% positive)
Most sensitive test for SLE?
Anti-Smith (ENA)
Most specific test for lupus nephritis?
Anti-dsDNA
ENA associated w neonatal congenital heart block?
Anti-Ro
Begins crossing placenta at 16weeks
cANCA assoc w
Wegners (granulomoatosis polyangitis)
CF
pANCA assoc w
Microscopic polyangitis Polyarteritis nodosa PSC/IBD HSP KD
RF assoc with
Rheum arthritis
Sjogrens
SLE
Histone assoc w
Drug induced lupus/SLE
HLA-B27 assoc w
Enthesitis related arthritis
Ankylosing spondylitis 90% pos
Uveitis
MTX mechanism and SEs
Blocks purine synthesis Bone marrow suppression (not at rheum doses) Teratogenic Accumulates in 3rd spaces AVOID bactrim/penicillins
Leflunomide mechanism and SEs?
Blocks pyrimidine synthesis
Liver dysfunction
Parasthesia
Teratogenic
Hydroxychloroquine mechanism and SEs?
Anti-inflammatory and immunosuppressive effects
Ototoxic - colour vision
Ophthal review 6-12mthly
Mycophenalate mechanism and SEs?
Suppressive lymphoproliferation and antibody formation
Bone marrow suppression
Increased risk of neoplasia
Infliximab mechanism and SEs?
Anti-TNFalpa
Cytopenia
Demyelination
Lupus like syndrome
Rituximab mechanism and SEs?
AntiCD20 - depletes B lymphocytes
MSK pain/weakness
Infection
Progressive multifocal leukoencephalopathy
Anakinra mechanism and SEs?
IL-1 receptor antagonist
Injection site reaction
Headache
neutropenia
Tocilizumab mechanism and SEs?
IL-6 receptor antagonist
Deranged LFTs
Injection site reaction
GI perforations
>2/52 hx of: arthritis daily fever lymphadenopathy evanescent erythematous rash serositis
Systemic JIA
Most common form of JIA?
Oligoarthritis
DIP arthritis and psoriasis with nail/finger changes and Fhx of psoriasis?
Psoriatic arthritis
HLA-B27 positive and hip/low back pain
Enthesitis related arthritis
First line mx for JIA?
NSAIDs
Steroids
2nd line DMARDs - MTX, antiTNF, anakinra
When not to use etanercept?
Uveitis
Complications of JIA?
Uveitis Limb length discrepancy/growth retardation Interstitial lung disease/Pulm HTN TMJ (50%) Decreased BMD from steroids