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124 Cards in this Set
- Front
- Back
Lupus is mostly a disease of what demographic group?
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Young women (age 15-45 at diagnosis)
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Pathologic lesions in lupus involve what two primary things?
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Immune complex deposition
Vascular involvement |
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What autoantibodies are present in lupus?
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Anti-nuclear (ANA) in almost ALL patients
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increased frequency of HLA-
____ and ____ in lupus. |
DR2 & DR3
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Organ systems most frequently involved in lupus
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skin and MSK
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Clinical manifestations of lupus
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HIGHLY variable, vague in some patients - fatigue, arthralgia/myalgia, fever, weight loss common
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Organs systems which when affected by lupus carry the worst prognosis
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Renal disease
Severe CNS involvement |
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Discoid lupus: defn.
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raised plaques or papules may lead to chronic scarring, pigment changes, irreversible alopecia
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best recognized cutaneous lesion in lupus
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Malar "butterfly" rash
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Cutaneous manifestations of lupus
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50% at presentation, 75% eventually
Photosensitivity (all exacerbated by sun) Malar rash Discoid Alopecia Mucous membrane ulcers |
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MSK manifestations of lupus
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Most common: symmetric polyarticular arthritis/arthralgia involving hands, wrists, knees, ankles
Virtually indistinguishable from rheumatoid arthritis in early disease. |
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Jaccoud's arthropathy: defn
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deforming, non-erosive arthritis in lupus
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Serositis: defn
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inflammation of serosa, common in lupus
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How does Serositis normally present in lupus? Eventually?
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pleuritic chest pain or pericarditis is most common
Eventually 30% will experience pleural or pericardial effusions. Can lead to tamponade. |
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Renal disease in lupus: characteristics (LUPUS NEPHRITIS)
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Proteinuria and/or hematuria
Common but variable in severity. Active sediment (cellular cast + protein) suggest worse disease. |
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Which pattern on renal biopsy has the WORST prognosis in lupus?
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Diffuse proliferative glomerulonephritis
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Predictors of worse renal disease
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Positive anti-dsDNA antibodies
Low complement levels (C3 and C4) |
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CNS disease in lupus: what is seen?
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Most serious: psychosis and seizures
Also see central lesions, peripheral neuropathies, headaches, depression, all sorts of stuff Diagnosis is one of exclusion |
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Libman-Sacks endocarditis: defn
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Sterile vegetations that can lead to valve failure. Immune complex deposition. Common in lupus.
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Sjogren's syndrome: defn
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dry eyes and mouth, salivary enlargement due to sialadenitis
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hematologic manifestations of lupus
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1) CYTOPENIAs are common.
2) anemia: 2 kinds 3) Hypercoagulable state |
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Antiphospholipid syndrome: defn
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When labs are positive for lupus anticoagulant, anticardiolipin, or β2glycoprotein antibodies twice 12 weeks apart + clinical event (thrombosis or miscarriage)
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Antiphospholipid syndrome: assns with other diseases
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Can be primary (no underlying disease) or secondary (ie, LUPUS)
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What autoantibodies are present in SLE?
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Anti-Nuclear Antibodies (ANA) in 95+%
Anti-dsDNA and anti-Smith antibodies: more specific but less sensitive Anti-RNP Anti-SSA and SSB |
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Anti-SSA and SSB antibodies associated with what?
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Sjogren's syndrome
Neonatal lupus Congenital heart block (when the antibodies cross placenta, can affect baby) |
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neonatal lupus: defn
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When autoantibodies from mothers (specifically anti SSA and SSB) cross placenta and attack skin (and potentially heart nodes) of baby
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What two types of anemia are seen in lupus?
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1) Anemia of chronic inflammatory disease
2) Autoimmune hemolytic anemia (Coombs test+) |
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Criteria for dx of lupus:
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4 of 11 cardinal symptoms required
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What are the 11 symptoms required for SLE dx?
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1) Malar rash
2) Discoid rash 3) Photosensitivity 4) Mucositis 5) Arthritis 6) Serositis 7) Renal disorder 8) Neurologic disorder 9) Hematologic disorder 10) Immunologic disorder 11) Antinuclear antibody: +ANA test |
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Categories of drugs used for SLE
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NSAIDs
Antimalarial drugs Corticosteroids Immunosuppressants Biologic agents (monoclonal antibodies) |
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Common causes of early death from lupus
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Active renal, neurologic, and other multisystem illness.
ESRD requiring transplant and dialysis a big problem. |
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Common causes of later (long time from diagnosis) death from lupus
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Premature atherosclerotic disease.
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Systemic sclerosis is aka
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Scleroderma
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Characteristics of scleroderma
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rare, slowly progressive with fibrosis and vascular lesions.
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Two types of systemic sclerosis
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Limiting (CREST) syndrome
Diffuse |
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What drugs commonly cause drug-induced lupus?
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INH
minocycline procainamide hydralazine anti-epileptics anti-TNF agents |
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microchimerism: defn
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most common form is fetomaternal microchimerism (also known as fetal cell microchimerism or fetal chimerism) whereby cells from a fetus pass through the placenta and establish cell lineages within the mother.
Similar to graft-vs-host disease. May be etiologic factor in systemic sclerosis |
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What is pathogenesis of systemic sclerosis?
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Fibrosis in vessels, skin, visceral organs
Vascular intimal hyperplasia and fibrosis |
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What is CREST syndrome?
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A more limited form of systemic sclerosis:
C- calcinosis R- Raynaud’s E- esophageal disorder S- sclerodactyly T- telangectasia |
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sclerodactyly: defn
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thickening and tightening of fingers with contracture
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What is the Esophageal disorder in CREST syndrome?
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Esophageal hypermotility and loss of LES pressure --> reflux, dysphagia, stricture formation
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Most frequent cause of death in scleroderma
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Lung involvement: alveolitis and PROGRESSIVE PULMONARY FIBROSIS
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Scleroderma renal crisis: defn
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The acute onset of renal failure.
There is usually an abrupt onset of moderate to marked hypertension (although some patients remain normotensive). A urine sediment that is usually normal or reveals only mild proteinuria with few cells or casts. |
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Scleroderma renal crisis: treatment
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Blood pressure control with angiotensin-converting enzyme (ACE) inhibitors with gradual reduction of malignant hypertension is the cornerstone of treatment.
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Only situation where ACE inhib should be used in acute renal insufficiency
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Scleroderma renal crisis (it's characterized by HIGH RENIN)
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Scleroderma: prognosis and outcome
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CREST patients fare better, but pulmonary htn is BAD.
Diffuse scleroderma: 50% mortality at 5 years. poor prognostic markers: renal disease, cardiac involvement, progressive pulmonary disease. |
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Polymyositis and Dermatomyositis: defn
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idiopathic autoimmune inflammatory diseases characterized by inflammation of the muscles and the skin.
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What drug class is associated with Polymyositis and Dermatomyositis?
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statins
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Polymyositis and Dermatomyositis: clinical features
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1) Muscle weakness (proximal): elevated muscle enzymes, showing evidence of necrosis and irritation
2) Rashes 3) Other features, including pulmonary disease (interstitial pattern), cutaneous vasculitis and calcinosis |
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When an older adult is dxed with Polymyositis and Dermatomyositis, what should you think of?
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Often associated with MALIGNANCY in older adults
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Some characteristic rashes in Dermatomyositis
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Periorbital edema
Violet rash on eyelids (heliotrope rash) Scaly rash dorsal knuckles (Gottron’s papules) Shawl sign |
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Polymyositis and Dermatomyositis: how to dx?
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Muscle weakness, rash, muscle enzymes, EMG, muscle biopsy
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Secondary Sjogren’s syndrome commonly seen in what diseases?
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RA and SLE
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Typical symptoms of Sjogren's syndrome
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Typical symptoms
Dry eyes Dry mouth - xerostomia Salivary gland enlargement |
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What other disease are Sjogren's syndrome patients at risk for?
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Non-Hodgkins lymphoma - risk is 44x that of healthy population
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General pathogenesis of all vasculitis
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Vessel-based inflammation .
Leukocytes in vessel walls --> damage (loss of integrity, vessel lumen occlusion) --> bleeding and tissue ischemia/necrosis |
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T/F Vasculitis may be a primary process or secondary to another underlying disease
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T
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What are the general, simple classifications of vasculitis?
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1) Small-vessel
2) Medium-vessel 3) Large-vessel |
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4 Small-Vessel Vasculitides
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1) Hypersensitivity vasculitis
2) Henoch-Schonlein purpura (HSP) 3) Wegener's granulomatosis 4) Microscopic polyangiitis |
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Hypersensitivity vasculitis
: clinical characteristics |
Mostly cutaneous: purpura or maculopapular rash
Often associated with a drug/medication |
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Henoch-Schonlein purpura (HSP): : clinical characteristics
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Similar to hypersensitivity vasculitis but see deposition of IgA on skin or renal biopsy
Age <20 years at onset Findings: palpable purpura, bowel angina, GI bleed, hematuria |
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Wegener’s Granulomatosis: defn
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Granulomatous inflammation of arteries (small and medium), venules, and arterioles
Classic triad of upper airway, lower airway, and renal disease. |
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Wegener’s Granulomatosis: classic triad
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Classic triad of upper airway, lower airway, and renal disease.
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Wegener’s Granulomatosis: male:female ratio
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more men than women
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Wegener’s Granulomatosis: what is seen on renal biopsy?
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pauci-immune (no Ig deposition) necrotizing glomerulonephritis
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Other than the classic triad, what other sx can be seen in Wegener’s Granulomatosis?
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Ocular disease
Cutaneous Arthritis Neurologic |
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Wegener’s Granulomatosis: how to diagnose?
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1) Traditional approach Biopsy showing granulomatous arteritis
2) Anti-neutrophil cytoplasmic antibodies (cytoplasmic pattern) - c-ANCA |
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What are the lung findings in Wegener’s Granulomatosis?
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See cavitary pulmonary lesions
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What autoantibodies are seen in Wegener's?
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Anti-neutrophil cytoplasmic antibodies (cytoplasmic pattern) - c-ANCA
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Anti-neutrophil cytoplasmic antibodies (cytoplasmic pattern) - c-ANCA: are they more specific or sensitive?
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More SPECIFIC - that is, if they're positive, they're very likely to have it.
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Polyarteritis Nodosa (PAN): defn
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medium-vessel, systemic necrotizing vasculitis
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Polyarteritis Nodosa (PAN): clinical presentation
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fever, malaise, weightloss
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Polyarteritis Nodosa (PAN): association with what other disease?
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hepB
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Polyarteritis Nodosa (PAN): preferentially affects what part of medium-sized vessels?
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Bifurcations. It leads to aneurysms
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Polyarteritis Nodosa (PAN): what other organs involved?
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In order of most to least common:
Arthritis, Peripheral nerve (wrist and foot drop), renal, cutaneous, ocular, ENT, testicular (rare) |
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Takayasu’s Arteritis: defn
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Chronic arteritis involving aorta and its branches, most common in young women (<40) of Asian descent
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Takayasu’s Arteritis: clinical presentation
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malaise, arthralgias, fevers
headaches, dizziness ARM CLAUDICATION due to upper extremity involvement Decreased pulses in almost all patients -- "Pulseless disease" HTN due to aortic/renal involvement |
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Takayasu’s Arteritis: gold standard of diagnosis
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Arteriogram of aortic arch
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Giant Cell Arteritis: aka
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Temporal arteritis
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Giant Cell Arteritis: defn
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Systemic inflammatory arteritis.
Most commonly involves the branches of the arteries originating from the aortic arch. |
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Polymyalgia Rheumatica (PMR): defn
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Syndrome characterized by diffuse aching of shoulder and hip girdles
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Which two large-vessel arterites are confined to elderly populations?
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Giant cell arteritis and polymyalgia rheumatica
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Giant Cell Arteritis: clinical features
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1) Headache
2) Weight loss 3) Fever 4) PMR 5) Visual disturbance 6) Jaw claudication (pain) |
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Major risk of giant cell arteritis (GCA)
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blindness
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Giant Cell Arteritis: when should it be suspected?
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Patients over age 50, new onset HA, visual disturbance, jaw claudication, elevated sed rate (ESR)
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Giant Cell Arteritis: gold standard to dx
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temporal artery biopsy : will see infiltration with chronic mononuclear inflammatory cells with/out giant cells, and destruction of internal elastic lamina
See skip lesions too, so bx might not pick it up. |
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Polymyalgia Rheumatica: when should it be suspected?
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Patients >50, new onset aching and stiffness esp in hips and shoulders, elevated ESR, dramatic improvement with low dose steroid.
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Cryoglobulinemia: defn
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small vessel vasculitis, mostly cutaneous involvement - secndary to other disease
associated with HepC infection or paraproteinemia Thrombosis and plugging of vessels --> ischemia of digits or glomerulonephritis in kidneys |
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Cryoglobulinemia: associated with what disease?
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HepC
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Vasculitis:Therapy in general
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STEROIDS. Mostly high dose except PMR
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Cryoglobulins : defn
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antibodies which precipitate in the cold
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Difference between COX1 and COX2
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COX1: present in all tissues
COX2: present in brain and kidney and is induced in most tissues during inflamm and injury. |
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Functions of thromboxane A2
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Induce platelet aggregation and smooth muscle contraction
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thromboxane A2: made by COX1 or COX2?
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COX1
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Aspirin: MOA
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Irreversibly inhibits COX1 and COX2
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NSAIDS: MOA (other than aspirin)
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reversibly inhibit COX1 and COX2
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celecoxib: MOA
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COX2 selective inhibitor (protects GI mucosa and induce platelet aggregation)
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zileuton: MOA
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5 lipoxygenase enzyme inhibitor. Produces bronchiolar dilation
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zafirlukast and montelukast: MOA
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competitive Leukotriene receptor blockers
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How do PGs affect nervous system?
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In general, they're thought to be modulators of neuronal activity. They can increase or decrease release of NTs.
Can cause fever, sensitize pain receptors, etc. |
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_________ binds to marijuana receptors and causes analgesia and decreased locomotion
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Anandamide.
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PGs that are produced by platelets and cause aggregation
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PGG2, PGH2, TXA2
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PGs that inhibit gastric acid secretion and increase GI mucous secretion.
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PGE2 and PGI2
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NFκB: what does it do?
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When induced, it stimulates formation of pro-inflammatory molecules
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Basis of aspirin's anti-thrombotic effects
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By inhibiting COX1, it prolongs bleeding time by decreasing ability of platelets to aggregate --> prevents formation of thromboxane
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Salicylism: defn and symptoms
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mild chronic salicylate poisoning.
Headache, dizziness, tinnitus, difficulty hearing, dim vision, mental confusion, lassitude, drowsiness, etc. Usually stop when salicylate dose is lowered. |
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Aspirin hypersensitivity: symptoms
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AKA Aspirin allergy.
rhinorrhea, urticaria, bronchospasm, hypotension, vasomotor collapse. Tx with epinephrine. |
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Diflunisal: MOA
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salicylate, competitive inhibitor of COX.
More potent anti-inflam than aspirin but no anti-pyretic fx. |
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Diflunisal: Use
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RA, sprains, OA
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Sulfasalazine: MOA
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Poorly absorbed in GI tract sulfonamide. Anti-microbial and anti-inflammatory. Used to treat inflamm bowel disease but also RA and ankylosing spondylitis
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Sulfasalazine: Use
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Used to treat inflamm bowel disease but also RA and ankylosing spondylitis
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Olsalazine: what is it?
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dimer of 5-aminosalicylate (active anti-inflam agent produced by metabolism of sulfasalazine)
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WHat is the active anti-inflam agent produced by metabolism of sulfasalazine?
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5-aminosalicylate
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T/F People allergic to aspirin are also allergic to NSAIDs
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T
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NSAIDs: should be used w/ caution in what patients?
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Renal failure and CHF
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_____ from the adeno-hypophysis stimulates synthesis of glucocorticoids from the adrenal cortex
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ACTH
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Broadly, how do steroids work?
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They inhibit early and later phenomena associated with inflammation. They inhibit formation and action of NFκB.
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Two main short-acting (8-12 hours )corticosteroids
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hydrocortisone (cortisol) and cortisone
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3 main intermediate-acting (12 - 36 hours) corticosteroids
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prednisone
prednisolone triamcinolone |
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2 main long-acting (36 - 72 hours) corticosteroids
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Betamethasone
Dexamethasone |
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What are the two main categories of steroid poisoning?
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Those due to use of steroids; Those which occur when steroids are terminated or reduced.
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Acute adrenal insufficiency: how does it relate to steroids?
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Too rapid steroid withdrawal after prolonged therapy.
fever, myalgia, arthralgia, malaise, weight loss. Protect from stress until endogenous synthesis returns to normal. |
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Prolonged steroid therapy: effects
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1) pituitary-adrenal suppression
2) hypokalemic alkalosis and edema 3) Glucosuria -diabetes 4) Increased susceptibility to infection 5) peptic ulceration 6) myopathy - proximal muscle weakness 7) behavioral disturbances 8) osteoporosis 9) growth inhibition and/or arrest 10) cataracts 11) hypertension 12) increased capillary fragility and severity of bruising 13) thinning of skin |
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Alternate day therapy of steroids
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to minimize metabolic effects and keep anti-inflammatory effects and to simulate normal cyclical steroid levels.
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