Vasculitides Flashcards
Polyarteritis Nodosa
- What is it?
- Most commonly involves what? 5
- Necrotizing arteritis of medium-sized vessels
- Most commonly involves the
- skin,
- peripheral nerves,
- mesenteric vessels (including renal arteries),
- heart, and
- brain but can affect any organ
Polyarteritis Nodosa
- Most commonly involved in what population?
- Can also occur in who?
- Gender?
- Common?
- Idiopathic but may be related to what? 3
Epidemiology 1. Most commonly in middle-aged or older adults 2. Can also occur in children 3. Males > females 4. Rare (3-4.5/100,000) Etiology 5. Idiopathic but may be related to -Hepatitis B and -Hep C as well as -Hairy Cell leukemia
Polyarteritis Nodosa Pathogenesis
1. Some cases related to what formation?
- Thickening of the inflamed vessel wall leads to what?
- Reduced what? 2
- Thrombosis results in what?
- Inflammation can also cause weakening of the vessel wall that leads to _______ formation?
- Does not involve the what?
- immune complex
- luminal narrowing
- blood flow and thrombosis
- ischemia to the involved organ
- aneurysm
- veins
Polyarteritis Nodosa Presentation
Systemic symptoms? 5
Signs? 5
- Systemic symptoms
- fatigue,
- weight loss,
- weakness,
- fever,
- arthralgias - Signs
- skin lesions,
- hypertension,
- renal insufficiency,
- neurologic dysfunction,
- abdominal pain of multisystem involvement
Skin manifestations of PAN
5
May be patterned how?
More common where?
- Tender erythematous nodules
- Purpura
- Livedo reticularis
- Ulcers (Infarction, gangrene)
- Bullous or vesicular eruption
May be focal or diffuse
More common on the lower extremities
PAN: What is the most commonly involved organ?
Kidneys
Renal Manifestations of PAN
1. Variable degrees of what? 2
- Rupture of renal arteries can result in what?
- Luminal narrowing leads to what but not inflammation or necrosis?
- UA may show what? 2
- What should not be seen?
- renal insufficiency and
- HTN
- perirenal hematoma
- glomerular ischemia
- minimal protein,
- moderate hematuria.
- NO RBC casts should be seen
Neurologic manifestations of PAN
2
- Motor and sensory deficits of the involved nerves
2. Generally asymmetric neuropathy at onset
GI manifestations of PAN
6
- Abdominal pain in those with mesenteric arteritis
- Nausea
- Vomiting
- Melena
- Diarrhea
- GI bleeding
Abdominal pain in those with mesenteric arteritis: Characteristics of this? 3
- Post prandial pain
- Weight loss
- Bowel infarction with perforation
Cardiovascular manifestations of PAN
- CAD
- HF
- MI is uncommon
PAN: MI is uncommon but can happen because of what?
HF from PAN is caused by what? 2
- Myocardial infarction is uncommon
- may result from narrowing or occlusion of the coronary arteries - Heart failure
- From vasculitis of the coronary arteries, resulting in ischemic cardiomyopathy
- or from uncontrolled hypertension caused by renal disease
Musculoskeletal manifestations of PAN
3
- Muscle involvement is common
- Myalgias
- Muscular weakness
PAN: Can manifest in other ways.
- GU?
- OBGYN? 2
- EYE? 2
- Orchitis
- Breast and uterine pain
- Eye
- Ischemic retinopathy,
- retinal detachment
PAN DX:
1. Based on?
- Confirm Dx with what?
- Basic evaluation should include what? 8 labs
- Based on
- physical exam,
- history,
- laboratory evaluation - Confirm diagnosis with
- biopsy or
- angiography if possible - CMP,
- muscle enzymes (CPK),
- HBV,
- HCV,
- UA,
- ESR,
- CRP,
- ANCA (ANCA should be negative)
PAN treatment? 2
- High dose glucocorticoids
- Prednisone 1mg/kg/day with a max dose of up to 80 mg per day - Cyclophosphamide or other immunosuppresants like azathiprine or methotrexate
PAN
- If untreated, 5 year survival is only about ____%
- If treated, 5 year survival is about ___%
- 13
2. 80
Kawasaki Dz
- AKA?
- Typically self limiting lasting an average of ___ days without therapy
- AKA: Mucocutaneous lymph node syndrome
2. 12
Kawasaki’s
- Most common in ages what?
- More common in what gender?
- Most common in what culture? 2
- Increased incidence in what seasons? 2
- 3-5 (80-90% of cases)
- boys
- Asians or Pacific Islanders
- summer and winter
Pathophysiology of KD
1. Vasculitis caused by what?
- Can result int he destruction of what? 2
- Vasculitis caused by the infiltration of vessel walls with mononuclear cells (monocytes, lymphocytes and dendritic cells) and later IgA secreting plasma cells
- Can result in the destruction of the
- tunica media and
- aneurysm formation
DX of Kawasaki:
1. Requires the presence of a fever lasting how long?
- and at least 4 of the 5?
- 5 days
- bilateral bulbar nonexudative conjunctivitis,
- erythema of the lips and oral mucosa, rash,
- peripheral extremity changes including erythema of palms or soles, edema of hands or feet and
- Polymorphus rash
- cervical lymphadenopathy typically develop after a brief nonspecific prodrome of respiratory or gastrointestinal symptoms
What is incomplete Kawasaki’s dz?
If only 2 of the criteria are met then it is considered an incomplete form
KD: Classic syndrome
Often preceded by nonspecific symptoms for up to 10 days? 5
- Irritability or lethargy 50%
- Vomiting alone 44%
- Anorexia 37%
- Cough or rhinorrhea 35%
- Diarrhea, vomiting or abdominal pain 61%
- How will the fever react to antipyretics for KD?
2. Consider KD in the DDx of all children with a fever for _______ or more
- Minimally responsive to antipyretics and typically remains above 38.5 (101.3)
May be intermittent - 5 days
KD: Conjunctivitis
- Present in > ___% of cases
- Bulbar injection begins within _____ of onset of the fever
- May spare the ______
- Frequently occurs with what? 2
- 90
- days
- limbus
- photophobia and anterior uveitis
KD: Mucositis
- Presents how? 2
- Severity?
- If they have what than likely this is not KD?
- Cracked red lips
- Strawberry tongue
- May be mild or not occur at all
- oral lesion such as vesicles, ulcers, tonsillar exudate
- What is usually the last manifestation to appear in KD?
- Edema where?
- Erythema where?
- Extremity changes
- Edema of the dorsum of hands and feet
- Erythema of the palms and soles
Whats the last phase of the dz for KD?
sheet like desquamation of hands and feet
KD: Polymorphous rash
- Usually occurs when?
- May begin as perineal erythema and desquamation followed by what?
- If what than consider another diagnosis?
- Usually occurs in the first few days of the illness
- macular, morbilliform or targetoid skin lesion of the trunk and extremities
- vesicular or bullous lesions
KD lymphadenopathy
- Common?
- Which nodes?
- May be only able to palpate what?
- When should we look for an alternative dx? 2
- Absent in up to 50-75% of patients
- Anterior cervical nodes
- May only be able to palpate a single large node
- If
- diffuse lymphadenopathy or
- splenomegaly look for an alternative diagnosis
Kawasaki Disease has significant cardiovascular complications
5
- Coronary artery aneurysms
- CHF and decreased EF
- MI
- Arrhythmias
- Peripheral arterial occlusion
Evaluation for KD?
1. Lab? 4
- Imaging? At what times should we do this? 2
- Why would we get a CXR?
- Lab
- CBC,
- CRP, ESR, = elevated
- CMP, - Echocardiogram
At diagnosis and repeat at 2 weeks and 6-8 weeks - CXR to evaluate for pulmonary edema
What would the CBC (3) and CMP (2) show on KD?
- leukocytosis,
- thrombocytosis,
- anemia,
- abnormal LFTs,
- hyponatremia
Treatment for KD? 2
- IV IG 2 g/kg infusion over 8-12 hours
2. + aspirin 80-100mg/kg/day divided into QID dosing
IVIG for KD
1. If given within the first 10 days of the onset of illness can reduce the incidence of what?
- ___________ effect
- Reduces what? 2
- augments what activity?
- Resolves what?
- coronary aneurysm by 5X
- Anti-inflammatory
- acute phase reactants,
- cytokines,
- T cell suppressor
- fever
Aspirin for KD:
1. After afebrile X 48 hours then ________ aspirin dose to 3-5 mg/kg/day and continue for about __ months
- Advantageous affects? 3
- decrease, 2
- Antipyretic,
- anti-inflammatory and
- antiplatelet effects
Second line therapies
for KD? 2
- Methylprednisolone
2. TNF inhibitors
Wegener’s Granulomatosis
- AKA?
- Common?
- Associated with what?
- Without treatment survival?
- AKA Granulomatosis with polyangitis (newest terminology)
- Rare disorder (12 per million)
- ANCA associated
- Without treatment survival
Wegener’s Granulomatosis
1. Affects which arteries and this leads to?
- Dx triad?
- Commonly what age?
- Gender?
- Affects small arteries
Inflammation restricts blood flow - Triad of
- upper and
- lower respiratory tract and
- glomerulonephritis - Commonly occurs in the fourth and fifth decade
- Affects men and women equally
Describe the type of pathology that affects the upper, lower respiratory tract (1)and the kidneys (1)?
- Necrotizing granulomas of upper and lower respiratory tract
- Necrotizing glomerulitis and thromboses of capillary loops
Wegener’s Granulomatosis
- Develops over how long?
- 90% of pts present with what?
- Such as? 6
- Develops over 4-12 months
- 90% of patients present with upper respiratory tract symptoms
- Nasal congestion,
- sinusitis,
- otitis media,
- mastoiditis,
- inflammation of the gums,
- stridor
Wegener’s Granulomatosis
1. Patients may present with lower respiratory tract symptoms. Such as? 3
- Which other symptoms are common? 3
- Patients may present with lower respiratory tract symptoms
- Cough ,
- dyspnea,
- hemoptysis - Fever,
- malaise and
- weight loss are common
Wegener’s Granulomatosis Other symptoms are: 1. Skin? 2. Arthritis of? 3. Neurologic? 4. Kidneys? 5. Ocular disease? 2
- Purpura or other skin lesions
- Arthritis of the large joints
- dysthesia
- Renal insufficiency
- Unilateral proptosis
- Red eye
Wegener’s Granulomatosis On PE 1. Nose findings? 5 2. Ears? 1 3. Eyes? 4 4. CV? 2
- Nose
- Congestion,
- ulceration,
- bleeding,
- perforation of nasal septum,
- saddle nose deformity - Ears
- Otitis media - Eyes
- Proptosis,
- scleritis,
- eipiscleritis,
- conjunctivitis - Findings suggestive of
- DVT or
- PE
Wegener’s Granulomatosis
Other possible symptoms include?
4
- Eye inflammation
- Joint pain (arthritis) or muscle pain
- Rashes or skin sores
- Kidney inflammation* (*Renal involvement is usually subclinical until renal insufficiency is advanced)
Wegener’s Granulomatosis
1. Labs? 5
- Chest CT is most sensitive to lung changes? 4
- Labs:
- Mild anemia and leukocytosis
- Elevated ESR
- Hematuria
- Blood cell casts
- C-ANCA is highly specific, but not all patients show an elevated C-ANCA - Chest CT is most sensitive to lung changes:
- Infiltrates
- Nodules
- Masses
- cavities
Wegener’s Granulomatosis: Caused by autoantibodies against?
What is found in arteries and veins? 2
- Proteinase
- pos c-ANCA - Granulomas and pathcy necrosis
- Wegener’s Granulomatosis
Treatment? 3 - Improvement usually occurs when?
- When the disease is in remission, patients will reduce the dosage of these medicines, but will continue treatment until the disease has been in continuous remission for how long?
- Treatment:
- Corticosteroids
- Cyclophosphamide
- Rituximab - Improvement usually occurs within days to weeks
- one year.
- What is the most common vasculitis in children?
2. Affects which vessels?
- Most common vasculitis in children
Also may occur in adults - Affects the small vessels
HSP typical features
4
- Palpable purpura
- Abdominal rash
- Arthritis
- Hematuria or proteinuria
HSP typical features:
- Palpable purpura: Typically where?
- Abdominal rash: Associated with what?
- Arthritis: Most common places? 2
- Hematuria or proteinuria: Manifests how?
Palpable purpura
1. Typically located on the lower extremities/Purple rash
- Abdominal pain
Associated with GI bleeding - Arthritis
Knees and ankles most common - Hematuria or proteinuria
Glomerulonephritis
HSP
- Prognosis?
- Lasts how long?
- More severe in who?
- Disease is usually self limiting
- Lasts from 1-6 weeks then subsides without sequelae if renal involvement is not severe
- Chronic courses with persistent or intermittent skin disease are more likely in adults than children
Most Commonly affected organs:
1. Skin manifestations? 3
- Joints?
- GI? 6
- Kidneys? 5
- 100% of cases
- Erythematous macular wheals,
- ecchymosis petechiae,
- palpable purpura - 60-84%
Transient or migratory arthritis, large joints - up to 76%
- N/V, abd pain,
- ileus,
- GI bleed,
- bowel ischemia,
- perforation,
- intussuusception - 21-54%
- Hematuria,
- + prot,
- nephritic syndrome,
- renal insuff,
- nephrotic syndrome
Prognosis and follow up of HSP
- Most cases resolve within?
- Severe cases treated with?
- Recurrence?
- Main cause of morbidity?
- Followup with? 2
- How often?
- Most cases resolve within a month
- Severe cases may be treated with systemic steroids
- Recurs in 1/3 of cases, usually within 54 months
- Main cause of morbidity is renal disease
- Follow up
- UA and
- BP monitoring - Weekly X 2 months, then every 1-2 months for a year