Medicine - Rheumatology Flashcards
risk factors for OA?
NAME?
LOSS: XR changes seen in OA?
NAME?
presentation of OA?
- joint pain- joint stiffness- worsened by activity - joint deformity- atlantoaxial subluxation of C-spine- reduced ROM
commonly affected joints in OA?
- hips- knees- sacro-iliac joints - DIPs- MCP of thumb- wrist- C-spine
hand signs in OA?
- herberden’s nodes at DIPs (never seen in RA)- bouchard’s nodes at PIPs- squaring at base of thumb- weakened grip- reduced ROM
how is OA diagnosed?
- clinical diagnosis if >45 and these 2 present:- activity-related joint pain- no morning stiffness (or lasts <30 mins)
management of OA?
NAME?
describe the 3 steps in analgesia for OA
- PO paracetamol / topical NSAIDs / topical capsaicin 2. PO NSAIDs + PPI (omeprazole for gut) 3. opiates (codeine, morphine)
what is RA?
inflammatory, symmetrical polyarthritis
genetic associations for RA?
- HLA DR4| - HLA DR1
antibodies found in RA?
- anti-CCP (gold standard)| - RF in 70%
presentation of RA?
- joint pain, swelling, stiffness- onset can be as fast as overnight or take months-years- typically MCPs and PIPs of hands affected (DIP-sparing)- fatigue- weight loss- flu-like illness- muscle aches and weakness- short duration if palindromic rheumatism- atlantoaxial subluxation
what is palindromic rheumatism? when would you worry?
- short, self-limiting episode of inflamm arthritis| - when anti-CCP present in blood (almost definitely goes on to develop RA)
what is atlantoaxial subluxation? what is the main complication?
- axis (C2) and atlas (C1) fuse together| - spinal cord compression
hand signs in active RA?
- “boggy” feeling synovium around joints- Z-shaped deformity of thumb- swan neck deformity - boutonnieres deformity- ulnar deviation at MCP joints
describe swan neck deformity
- hyperextended PIP| - flexed DIP
describe boutonnieres deformity
- hypextended DIP| - flexed PIP
systemic signs of RA?
- caplan’s syndrome- bronchiolitis obliterans - felty syndrome (RA, neutropenia and splenomegaly)- sjogren’s syndrome - anaemia of chronic disease- CVD- eye signs- rheumatoid nodules- lymphadenopathy- carpel tunnel syndrome- amyloidosis
what is caplan’s syndrome? where is it seen?
- pulmonary fibrosis with pulmonary nodules| - RA
triad of felty syndrome?
NAME?
eye signs of RA? hint: everything inflamed af
NAME?
investigations in RA?
- bloods (RF, anti-CCP, CRP, ESR)- XR hands - XR feet - USS shows synovitis
X-ray changes seen in RA?
NAME?
why should patients with persistent synovitis be referred? when does it become urgent?
- to rule out RA| - when symptoms have persisted >3m or small joints of hands / feet affected
scoring system used in RA diagnosis? how is it calculated? hint: it u
- disease activity score 28 (DAS28) - looks at tenderness / swelling in 28 joints - takes ESR and CRP into account too
what is the health assessment questionnaire (HAQ) used for? when is it used?
- to measure functional ability in RA| - done at diagnosis to monitor response to treatment
factors indicating a poor prognosis in RA?
NAME?
management of RA?
NAME?
describe the DMARD ladder in RA?
- 1st line: monotherapy with methotrexate / leflunomide / sulfasalazine / hydroxychloroquine (mild)- 2nd: add another one of above- 3rd: methotrexate + TNF inhibitor (e.g. infliximab)- 4th: methotrexate + CD20 inhibitor (rituximab)
examples of TNF inhibitors? important side effect of these?
NAME?
how is methotrexate prescribed? what gets co-prescribed?
- IM / SC injection or weekly tablet| - 5mg folic acid to be taken weekly, but on a different day
side effects of DMARDs?
NAME?
unique SE of methotrexate?
pulmonary fibrosis
unique SEs of leflunomide?
- HTN| - peripheral neuropathy
unique SE of sulfasalazine?
reduces sperm count in men
unique SEs of hydroxychloroquine?
- nightmares| - reduced visual acuity
which underlying diseases could be reactivated by anti-TNF therapy?
- TB| - hep B
unique SEs of rituximab?
- night sweats| - thrombocytopenia
what is psoriatic arthritis (PsA)? which group of conditions is it in?
- an inflammatory arthritis associated with psoriasis| - one of the seronegative spondyloarthropathies
what % of psoriasis patients also have PsA?
up to 20%
signs of PsA?
NAME?
describe onycholysis
nail coming off the nail bed
which conditions might be associated with PsA?
NAME?
screening tool for PsA? who gets it?
- psoriasis epidemiological screening tool (PEST)| - all psoriasis patients
X-ray changes seen in PsA?
NAME?
what is arthritis mutilans? which body part is affected? key finding?
NAME?
management of PsA?
- similar to RA- NSAIDs for pain- DMARDs- anti-TNFs- last line: ustekinumab (targets IL-12 and IL-23)
pathophysiology of reactive arthritis? old name for this?
- synovitis in joints in response to recent infection| - reiter syndrome
presentation of reactive arthritis?
NAME?
useful acronym for reactive arthritis presentation?
can’t see can’t pee can’t climb a tree
key differential of reactive arthritis?
septic arthritis
common infective triggers of reactive arthritis?
NAME?
management of reactive arthritis?
- ABx according to local guidelines until septic arthritis ruled out, then:- NSAIDs- steroid injections at joint- systemic steroids if multiple joints affected
investigations for reactive arthritis? why are these done?
NAME?
prognosis in reactive arthritis?
- very good| - most resolve in 6 months and never recur
mortality rate in septic arthritis?
10%
which procedure increases the risk of septic arthritis?
joint replacement
presentation of septic arthritis?
- typically only 1 joint affected- hot, red, swollen joint- stiffness- reduced ROM- systemic: fever, lethargy, sepsis
most common infective organism in septic arthritis?
staph aureus
bacterial causes of septic arthritis?
NAME?
differentials for septic arthritis?
NAME?
management of septic arthritis? which ABx would you choose?
- empirical IV ABx initially - continued for 3-6 weeks - e.g. flucloxacillin + rifampicin 1st line - vancomycin if penicillin allergy / MRSA / prosthetic joint- joint aspirate for staining, microscopy, culture and sensitivities - then tailor ABx to sensitivities
what is ankylosing spondylitis? which group is it in?
NAME?
what groups the seronegative spondyloarthropathies together?
all linked to HLA B27 gene
which conditions come under seronegative spondyloarthropathies?
NAME?
typical demographic affected by ankylosing spondylitis?
- young male in teens / 20s| - M:F = 3:1
presentation of ankylosing spondylitis?
NAME?
key complication in ankylosing spondylitis?
vertebral fractures
non-spinal signs of ankylosing spondylitis?
- systemic (weight loss, fatigue)- chest pain (from costovertebral joints)- plantar fasciitis, achilles tendonitis (from enthesitis)- dactylitis - anaemia - anterior uveitis- aortitis- heart block - restrictive lung disease- pulmonary fibrosis in 1%- IBD