Lung Injury Caused By Pharmacologic Agents Flashcards

1
Q

Most frequent offenders

A

Chemotherapeutic drugs

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2
Q

Most frequent clinical syndrome

A

Diffuse interstitial pneumonitis and fibrosis

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3
Q

Risk factors associated with cytotoxic drug therapy

A

Cumulative dose
Age of patient
Radiation
O2 therapy
Use of other toxic drugs

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4
Q

Criteria for diagnosing drug-induced lung disease

A
  1. History of ingestion of drug known to cause lung injury
  2. Clinical manifestations have been reported to be induced by the drug
  3. Other causes have been ruled out
  4. Improvement on discontinuation of drug
  5. Exacerbation after resuming drug
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5
Q

2 patterns of bleomycin toxicity

A
  1. Progressive fibrosis
  2. Acute hypersensitivity reaction
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6
Q

Severe pneumonitis in adults develops after administration of this amount of bleomycin

A

283 mg/m2
*less severe if slow IV administration

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7
Q

___ and ___ receiving bleomycin have increased risk for radiation pneumonitis

A

Pediatric sarcoma
Hodgkin

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8
Q

Pulmonary injury due to bleomycin occurs by:

A

Direct injury
1. Oxidant injury through production of reactive O2 metabolites and inactivation of antioxidants
2. Induces apoptosis of AEC type II

Immunologic reaction
1. Generates inflammatory mediators
2. Increased collagen synthesis by fibroblasts through TGFb

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9
Q

PFT of bleomycin lung injury

A

Restrictive (low VC, TLC)

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10
Q

Gas properties of bleomycin lung injury

A

Reduced DLCO
Reduced arterial O2 saturation

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11
Q

Signs of bleomycin lung injury

A

DRY HACKING COUGH
Dyspnea

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12
Q

CXR findings of bleomycin lung injury

A

Diffuse linear densities

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13
Q

Biopsy findings in bleomycin lung injury

A

Interstitial pneumonitis
Fibrosis
Extensive alveolar damage with hyperplasia of type II cells, mostly subpleural and basilar

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14
Q

Monitoring of bleomycin lung injury

A

Serial DLCO

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15
Q

Management of bleomycin lung injury

A

Withdrawal
Supportive
CS in severe toxicity, hypersensitivity reactions, and eosinophilic pneumonitis

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16
Q

Mechanism of cyclophosphamide lung toxicity

A
  1. Oxidant and inflammatory
  2. Immune
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17
Q

Pulmonary reactions in total doses of cyclophosphamide between __ and __

A

0.15 and 50 g

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18
Q

Chest wall deformity secondary to failure of lung growth during adolescent growth spurt is a striking feature of:

A

Cyclophosphamide lung toxicity

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19
Q

Herald onset of cyclophosphamide lung toxicity

A

SUBACUTE DRY COUGH
Dyspnea

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20
Q

PE of cyclophosphamide lung toxicity

A

Tahcypnea
Diffusely diminished breath sounds

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21
Q

PFT of cyclophosphamide lung toxicity

A

Restrictive
Hypoxemia

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22
Q

Biopsy findings of cyclophosphamide lung toxicity

A

Interstitial fibrosis
Alveolar exudates
Atypical alveolar epithelial cells

23
Q

Treatment of cyclophosphamide lung toxicity

A

Withdrawal
Supportive
CS

24
Q

Etoposide lung toxicity

A

Alveolar hemorrhage

25
Q

Mechanism of methotrexate lung toxicity

A

MAP kinase pathway activation causing cytokines activation

26
Q

Features of methotrexate toxicity

A

Hypersensitivity pneumonitis
Decreased DLCO

27
Q

CXR abnormalities in methotrexate toxicity

A

Bilateral interstitial infiltrates
Mixed interstitial and alveolar infiltrates

28
Q

Treatment of methotrexate toxicity

A

Withdrawal
CS
Avoid resuming

29
Q

Cytosine arabinoside (Ara-C) toxicity

A

Pulmonary edema

Rare:
ARDS
BOOP

30
Q

Gemticabine toxicity

A

ARDS

31
Q

Procarbazine, VM-26, vinca alkaloids toxicity

A

Hypersensitivity pneumonitis

32
Q

Imatinib toxicity

A

Pleural effusion, pulmonary edema

33
Q

IL-2 toxicity

A

Vascular leak syndrome (pleural effusion, pulmonary edema)
Increased AaDO2 gradient
Decreased FVC, FEV1, DLCO

34
Q

ATRA toxicity

A

Interstitial infiltrates
Pleural and pericardial effusion
Hyperleukocytosis

35
Q

Treatment of ATRA toxicity

A

CS (dexamethasone 10mg/day)

36
Q

Nitrofurantoin PFTs

A

Restrictive
Reduced DLCO

37
Q

2 clinical patterns of nitrofurantoin toxicity

A
  1. Acute - fever, cough, dyspnea; bilateral interstitial or alveolar infiltrates with or without pleural effusion
  2. Chronic - cough, dyspnea, chest pain months to years after intake; lupus-like syndrome: pleural effusion is less common
38
Q

Treatment and prognosis of nitrofurantoin toxicity

A

Withdrawal
CS
May not resolve completely

39
Q

Sulfasalazine toxicity

A

Obstructive > restrictive
Hypoxemia
Eosinophilia

40
Q

Carbamazepine, levetiracetam toxicity

A

DRESS
Restrictive pattern
Reduced DLCO

41
Q

Minocycline toxicity

A

DRESS
Eosinophilic pneumonia

42
Q

Penicillamine toxicity

A

Short: hypersensitivity
Intermediate: diffuse alveolitis, bronchiolitis obliterans
Prolonged: alveolar hemorrhage

43
Q

PFT in penicillamine toxicity

A

BO: obstructive
Alveolitis, hypersensitivity: restrictive

44
Q

Other immunomodulatory agents with lung toxicity

A

Rituximab (RALI)
Alemtuzumab
Cetuximab
Trastuzumab
Tacrolimus
Sirolimus
Pegylated interferon

45
Q

Amiodarone toxicity

A

Rapidly progressive alveolar hemorrhage
ARDS

46
Q

Risk for ARDS in amiodarone

A

High FiO2
Cardiothoracic surgery
Contrast

47
Q

BAL fluid in amiodarone toxicity

A

“Amiodarone effect”
Accumulation of drug in the macrophage lysosomes
Foamy macrophages

48
Q

HMG-CoA reductase inhibitors (statins) toxicity

A

Restrictive pattern
Reduced DLCO
Foamy macrophages
Phospholipidosis

49
Q

LTRA toxicity

A

EGPA

50
Q

Aspirin and NSAIDs toxicity

A

Bronchoconstriction in aspirin-exacerbated respiratory disease (chronic sinusitis, polyposis, severe asthma)

51
Q

Heroin overdose

A

Pulmonary edema

52
Q

Crack cocaine

A

Air leak
Pulmonary edema
Interstitial pneumonitis
BOOP

53
Q

Cannabis

A

Chronic bronchitis
Emphysematous changes

54
Q

OCPs

A

Venous thrombosis
Pulmonary embolism