Rheumatology Flashcards
Which type of arthritis are IVDUs particularly at risk of getting?
Septic arthritis
What is the most commonly implicated pathogen in septic arthritis?
S aureus
What tests are run on joint aspirate in suspected septic arthritis?
Gram stain and culture
WCC
What is the first line of management for septic arthritis?
IV Abx
What is the surgical management option for septic arthritis?
Joint washout under GA
Why can recent infection predispose to gout?
Resulting dehydration increases risk
How is synovial fluid imaged to see shape of gout crystals?
Polarised light microscopy
Which type of arthritis does chlamydia predispose you to?
Reactive arthritis
What is the HLA association of reactive arthrits?
HLA-B27
Which disease does “can’t see, pee or climb a tree” refer to?
Reiter’s syndrome
Recall 5 signs of reactive arthritis
Conjunctivitis (can't see) Circinate balantis (can't pee) Achilles tendonitis (can't climb a tree) Keratoderma blenorrhagica (can't climb a tree) Mouth ulcers
What is antalgic gait?
Shortened stance phase in painful limb when walkiing
By what mnemonic can the X ray fetures of osteoarthritis be remembered?
LOSS Loss of joint space Osteophytes Sunchondral cysts Subchondral sclerosis
Fixed flexion deformity is seen in what rheumatological disease?
Osteoarthritis
Recall a conservative, medical and surgical option for management of osteoarthritis
Conservative: physio
Medical: joint injection
Surgical: joint replacement
What is the most specific blood test for rheumatoid arthritis?
Anti-CCP
What is ‘z thumb’ a sign of?
Rheumatoid arthritis
What is Felty’s syndrome?
Reduced WCC
Splenomegaly
Rheumatoid arthritis
Differentiate which type of amyloidosis is primary and seciindary and their aetiologies
Primary = AL
Plasma cell proliferates to produce many clones –> monoclonal Ig –> fibrillar protein deposition
Secondary = AA
Chronic inflammation –> chronically elevated serum AA –> fibrillar protein deposition
What are the main risk factors for AL amyloidosis?
Disorders of cell replication in blood: lymphoma, multiple myeloma
What are the main risk factors for AA amyloidosis?
Inflammatory polyarthropathies are the main ones, but chronic infection and IBD also predispose
What is the definitive way of diagnosing amyloidosis?
Histology shows positive congo-red staining with red-green birefringence under polarised light microscopy
Which type of amyloidosis is familial?
ATTR
What are the spondyloarthritides?
Inflammatory
Affect spine and peripheral joints
RF negative
HLA-B27 association