Vasculidities Flashcards
consequences of blood vessel occlusion
tissue ischemia
rupture of vasculature- hemorrhage
immune complex vasculitis
CTD-associated (SLE, RA)
Henoch-Schonlein purpura
cryoglobulinemia
hypersensitivity
ANCA-associated vasculitis
GPA, EGPA, MPA, renal-limited MPA
GPA =
Wegener’s granulomatosis
EGPA =
Churg-Strauss syndrome
MPA =
microscopic polyangiitis
Granulomatous vasculitis
GCA, Takajasu’s arteritis, GPA, EGPA
large vessel vasculitis
Takajasu
Giant Cell
medium vessel vasculitis
PAN
Kawasaki’s
Isolated CNS vasculitis
small vessel vasculitis
GPA EGPA MPA Henoch-Schonlein purpura Behcet's syndrome
how do immune complexes generate inflammatory response
activate complement, generating anaphylatoxins and neutrophil chemoattractants
how to measure ANCA
indirect immunofluorescence or ELISA to PR2 and MPO
C-ANCA associated with
PR3
Wegeners granulomatosis
P-ANCA associated with
MPO
seen with Churg-Strauss, and MPA
ANCA titers correlate with
disease activity
ANCA binds to
neutrophils and monocytes, and endothelial cells
induces oxygen radical release, degranulation, inhibition of microbiocidal function, increased surface expression of PR3 on neutrophils
what cells are prevalent in granulomatous vasculitis
antigen presenting cells
T cells, cytokines
macrophages
Th1 cells secrete
IL2, IFN-gamma, TNF-alpha
common complaints of vasculitis
fever, fatigue, weakness rash (purpura) arthalgias abdominal pain HTN, renal insufficiency neurologic dysfunction
what to rule out with vasculitis ddx
infection
TB
malignancy
GCA age
> 50, northern european descent
TA age
GCA distribution
extracranial branches of carotid arteries
TA distribution
aorta and aortic main branches
skip lesions associated with
GCA
cyclic occurrences of GCA suggst
infectious link
amaurosis fugax
unilateral sudden blindness due to anterior optic neurotics secondary to inflammation in posterior ciliary arteries
PMR is primarily linked with
GCA
PMR presents with
proximal shoulder and pelvic girdle pain, morning stiffness
treatment of GCA/PMR
corticosteroids
steroid sparing agents
MTX, azathioprine
Takajasu’s arteritis is aka
pulseless disease
aortic arch syndrome
occlusive thromboarthropathy
systemic features of takayasu’s arteritis
fever, malaise, weight loss, syncope, stroke, visual changes
diagnosis of takayasu’s arteritis
angiogram, MRI angiogram, MRI, CT
adjunctive treatment of takayasu’s arteritis
ASA, anti-platelet agents, angioplasty
PAN presentation
postprandial abdominal pain, numbness, foot drop
PAN predilection for
arterial bifurcations
PAN may result from
Hepatitis B infection (30%)
ANCA effects which size of vessels
small and medium
classic triad of Wegener’s Granulomatosis
upper airway
lower respiratory tract
kidneys
limited WG’s
relatively mild and indolent without renal involvement
laboratory features of GPA
C-ANCA (PR3»_space;MPO)
anemia, thrombocytosis, elevated ESR/CRP
pathologic features of GPA
granulomas, vasculitis, necrosis
most common presenting feature of GPA
upper airway disease (70% of patients at onset)
other common presentations of GPA
otologic manifestations- serious otitis media
nasal disease
treatment of GPA
cyclophosphamide oral and prednisone- initial treatment
prodrome of EGPA
dominated by allergic features. Allergic rhinitis and asthma, atopy
tissue eosinophilia present in
Churg-Strauss syndrome
EGPA treatment
corticosteroids
cyclophosphamide for severe/refractory disease
glomerulonephritis common in
microscopic polyangiitis
Behcet’s disease triad
oral ulcers, genital ulcers, andterior uveitis
Behcet’s disease is associated with
HLA-B51
Henoch Schonlein Purpura aka
anaphylactoid purpura
HSP tetrad
palpable purpura
arthralgias
GI involvement
glomerulonephritis
main treatments of vasculidities
corticosteroids cyclophosphamide MTX azathioprine cyclosporine MMF plasmapharesis IVGG trimethoprim-sulfamethoxazole biologics (rituximab)