Dyspnea and Cough DSA Flashcards

1
Q

Granulomatosis with Polyangiitis (Wegener’s granulomatosis) is noted to have a triad of what 3 features?

A

URT disease
LRT disease
Glomerulonephritis

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2
Q

What is needed for Dx of Polyangiitis with Granulomatosis?

A

Tissue Bx
ANCAs
Triad

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3
Q

ANCAs of Polyangiitis with Granulomatosis are usually directed against…

A

Proteinase-3

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4
Q

What is the general pathologic features of Polyangiitis with Granulomatosis? (3)

A

Vasculitis of small aa., arterioles, and capillaries
Necrotizing granulomatous lesions of URT and LRT
GN

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5
Q

What is the patient demographic of Polyangiitis with Granulomatosis?

A

4-5th decades, M=F

Annual incidence of 12 per million

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6
Q

How long does it take for Polyangiitis with Granulomatosis to develop? What are some early presentations?

A

4-12 mo. with fever, malaise, weight loss.

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7
Q

DZs on DDx of Polyangiitis with Granulomatosis

A
PAN
Microscopic polyangiitis
Churg-Strauss
Chronic sinusitis
Goodpasture syndrome
SLE
Sarcoidosis
Cocaine
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8
Q

What 2 lab tests should be ordered for Polyangiitis with Granulomatosis?

A

c-ANCA

  • Abs to proteinase-3 (from neutrophil granules)
  • High specificity (>90%)
  • If Dz is active, c-ANCA will be high

p-ANCA

  • Abs to myeloperoxidase
  • Less specific than c-ANCA
  • 10-25% w/ classic Polyangiitis with Granulomatosis have p-ANCA if kidney involvement is present
  • Proteinuria
  • Hematuria and casts
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9
Q

What imaging should be done for Polyangiitis with Granulomatosis?

A

Chest CT

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10
Q

ANCA is not enough to Dx Polyangiitis with Granulomatosis. What else is paramount?

A

Bx and histology

  • vasculitis
  • granulomatous inflammation
  • acute/chronic inflammation
  • renal Bx for crescents
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11
Q

What is the treatment for Polyangiitis with Granulomatosis is divided into two phases:

How is the therapy determined?

A

Induction of remission
Maintenance of remission

Determined on whether the pt. has a mild disease (no kidney involvement) vs. severe life/organ-threatening disease (RPGN, Pulm. hemorrhage, etc)

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12
Q

What is the prognosis of Polyangiitis with Granulomatosis without treatment?

What can be given as Tx? Do they work well?

A

Fatal usually within 1 year.

Cyclophosphamide and Prednisone.
Remissions have been in up to 75%, but half will suffer recurrences.

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13
Q

Churg-Strauss is vasculitis of:

What organ systems are affected?

A

Small and medium aa. in patients with asthmatic sx.

Skin, lung, maybe heart, GI, nerves.

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14
Q

Major clinical finding of Churg-Strauss:

What is seen on CXR?

A

*Peripheral eosinophilia

Lung opacities to nodules

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15
Q

What is seen on Bx to make a Dx of Churg-Strauss?

A

Fibrinoid necrotizing epithelioid and eosinophilic granulomas

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16
Q

What is the Tx for Churg-Strauss initially?

What can it be replaced by for maintenance therapy?

A

Prednisone and Cyclophosphamide

Cyclophosphamide replaced with Methotrexate or Azathioprine

17
Q

Populations with increased risk of Sarcoid?

A

North America AA (F>M)
Northern European white

Onset in 3-4th decade usually

18
Q

Presenting SX of Sarcoid:

A
Malaise, fever, DOE
Erythema nodosum, iritis, peripheral neuropathy, arthritis, CM may prompt initial eval.
Can be ASX.
Parotid gland enlargement
HSM, Lymphadenopathy
19
Q

Myocardial sarcoid is found in only 5% of patients, but it can lead to: (3)

A

Restrictive CM
Cardiac dysrhythmias
Conduction disturbances

20
Q

Lab abnormalities in Sarcoid

A

Leukopenia
Possible hypercalcemia
Elevated ACE

21
Q

Sarcoid on PFT

A

Restrictive changes with decreased lung volumes and diffusion capacity most common. May reveal airflow obstruction.

22
Q

What test is positive in 70% of patients with Sarcoid?

A

Skin test anergy

23
Q

Stage I, II, III and IV Sarcoid on imaging

A

Stage I - hilar adenopathy
Stage II - hilar adenopathy w/ parenchymal involvement
Stage III - only parenchymal involvement
Stage IV - advanced fibrotic changes in upper lobes

24
Q

What is useful for Dx of Sarcoid?

A

Bx of non-caseating granulomata
Transbronchial Bx
ECG may show conduction problems and dysrhythmias

25
Q

What is often seen in bronchoalveolar lavage in Sarcoid?

What is it useful for?

A

Increased lymphocytes with a high CD4/CD8 ration

Used to follow Dz, not for Dx

26
Q

What is given for Tx of Sarcoid?

What immunosuppressives are given?

A

Prednisone

Methotrexate or Cyclosporine, or anti-TNF w/ Infliximab

27
Q

Demographic of patients with IPF

A

6-7th decade, M>F

More common in past smokers

28
Q

What genetic variants (mutations) are associated with IPF? (3)

A

Mutations in surfactant protein C
Telomerase
Polymorphisms of MUC5B

29
Q

Presentation of IPF

A
**Worsening DOE
Dry cough
Basilar crackles
Clubbing
Cyanosis
RSHF
30
Q

Workup for IPF

A
CT/CXR
PFT
6 min walk
Labs
**Lung Bx
31
Q

Meds for IPF (2) and their S/E

A

Pirfenidone - anti-fibrotic med. No known MOA. Taken 3x/day. S/E are nausea, abdominal pain, photosensitivity. Must monitor LFTs.

Nintedanib - tyr kinase inhibitor. S/E are diarrhea. LFTs must be monitored.

32
Q

Aside from the meds, what can be given to patients with IPF?

A

O2
Pulm rehab
Transplant

33
Q

Risk factors for PE

A
Immobility
Hyperviscosity
Increased venous pressures
Vessel damage
Hypercoagulative states