Jays rheum questions Flashcards
what two ways can you diagnose OA?
1 knee pain + 5/8 conditions
2. knee pain with radiologic findings and 3/8 conditions
72 year old smoking female patient c/o pain with use of her hand. Stiffness for 20 minutes in morning and aching. You note bony enlargements in 3 DIPs, no MCPs, thenar atrophy and squaring at the base of the thumb.
what is the dx?
OA
72 year old smoking female patient c/o pain with use of her hand. Stiffness for 20 minutes in morning and aching. You note bony enlargements in 3 DIPs, no MCPs, and squaring at the base of the thumb.
What color would you expect the synovial fluid to be?
Clear yellow
72 year old smoking female patient c/o pain with use of her hand. Stiffness for 20 minutes in morning and aching. You note bony enlargements in 3 DIPs, no MCPs, and squaring at the base of the thumb.
What would the white count be?
Less than 2,000
Why can the 72 year old be diagnosed with the ACR criteria?
She shows…
- hard tissue enlargment of 2+ joints
- hard tissue enlargment of 2+ DIP joints
- < 3 swollen MCPs (r/o RA)
- deformity of atleast 1 DIP;PIP joint.
at what level does uric acid crystallize?
> 6.8mg/dl
however, that level can fluctuate based on body tempature (precipitates in cold places)
What causes the gouty inflammation?
changes in environment of where the crystals are deposited resulting in uncoating of the protein and inciting an immune response.
Squaring of the thoracic and lumbar vertebrae, elevated CRP and ESR, and HLA-B27 are associated with what?
Ankylosing spondylitis
treat with NSAIDS
What are some extraarticular manifestations of AS?
Anterior uveitis, IBD, prostatitis, aortic regugitation.
What autoimmune diseases present as ANA positive?
Lupus, scleroderma, polymyositis/dermatomyositis, RA, sjogrens syndrome, juvenile chronic arthritis, etc.
since both regular gout and pseudo present w/ swelling, warmth, fever, leukocytosis and elevated ESR, how can you tell the difference on aspiration?
Gout: Monosodium urate monohydrate
Pseudo: calcium pyophosphate dehydrate cyrstals (CPPD)
what is chondrocalcnosis?
the condition of having CPPD crystals, not having it doesnt mean you DO have pseudo, and not having doesnt mean you dont!
if you cant ready the newspaper through the aspirated fluid, the disease course is likely….
inflammatory!
what do you see on xray in OA?
joint space narrowing, bony sclerosis, ostephytes, and subchondral cyst formation
while OA is ___(symmetric/assymetric), RA is __(symmetric/assymetric)?
OA = asymmetric RA = symmetric
most common cause of AVN?
Prednisone
possible treatments for OA
NSAIDS, cox2s, DMEs, topicals, and the good ‘ol analgesic ladder
what are the most common systemic factors that increase your chances of OA?
AGE! followed by gender, bone density, nutritional factors, and genetics. most common site in women is the knee and hand. MEN = hip
A 76 yo f shows bilateral swelling of joints in her feet, wrists and hands. She says that it takes a while for stiffness to go away in the morning. What are the radiologic findiings you suspect?
Bony erosions, joint space narrowing, and possible Rheumatoid nodules in the lungs. THIS IS RA.
What sero markers can you use to Dx RA?
Rheumatoid factor, anti-CCP antibodies, or both.
what are mainstay treatments for RA?
- NSAIDS.
- DMARDS
- Biological response modifiers (BIG RISK FOR INFECTION IN THESE ONES)
T/F: physical signs and symptoms of RA correlate well the the progression of the disease
True
87 yo female w/ sudden h/a, jaw claudication, tongue pain and fever. What is she at risk for?
irreversible blindness
87 yo female w/ sudden h/a, jaw claudication, tongue pain and fever, you also note a slight bruit. What is the gold standard to make your diagnosis?
temporal artery biopsy