PANCE - rheum review Flashcards
only med that can be used both in acute and chronic gout
colchicine
AE: diarrhea
list 2 xanthine oxidase inhibitors
allopurinol
febuxostat
MOA:
- inhibits purines fr being broken down into uric acid
probenecid
used to tx chronic gout
promotes renal uric acid clearance
- inhibits proximal tubule that mediates uric acid reabsorption
avoid in pts w hx of nephrolithiasis
XR findings in gout
punched out erosions w overhanging edges
- “rat bite”
XR findings in pseudogout
chondrocalcinosis
- punctate / linear radiodensities in cartilage of joint spaces
why is long term steroid therapy a RF for osteoporosis
steroids decrease Ca absorption fr the GI tract
- this causes osteoclast activation and inhibits osteoblasts
MOA of bisphosphonates
inhibit osteoclastic bone reabsorption
anabolic agents (teriparatide) for osteoporosis indications
reserved for SEVERE osteoporosis (T-score: -3.5 or less) because they rebuild new bone
MOA:
- synthetic form of PTH that stimulates osteoblasts to rebuild new bone
med can only be taken for 2 years MAX
patho of polymyositis
CD8 T cells destroys muscle fibers
patho of dermatomyositis
CD4 w perimysial inflammation
polymyositis presentation
symmetric muscle WEAKNESS and NO pain
dermatomyositis presentation
heliotrope rash
- rash over periorbital skin
- MC on upper eyelids
gottron papules
- violaceous, scaly, & ulcerated papules over bony prominences (MC knuckles)
photodistributed poikiloderma (shawl sign)
how to dx polymyositis / dermatomyositis
creatine kinase
muscle biopsy confirms
antibodies assoc w polymyositis
anti-Jo-1
antibodies assoc w dermatomyositis
anti-Mi 2