Pneumonia - Lung abscess Flashcards

1
Q

types of pneumonia

A
  1. lobar
  2. Bronchopneumonia
  3. Interstitial pneumonia
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2
Q

lobar pneumonia - typical organisms

A
  1. S pneumonia
  2. Legionella
  3. Klebsiella
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3
Q

Bronchopneumonia - typical organisms

A
  1. S. pneumonia
  2. S. aureus
  3. H. influenza
  4. Klebsiella
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4
Q

Interstitial pneumonia is also called

A

atypical pneumonia

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5
Q

interstitial (atypical) pneumonia - typical organisms

A
  1. Viruses (influenza, CMV, RSV, adenovirus)
  2. Mycoplasma
  3. Legionella
  4. Chlamydia
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6
Q

MC typical orgmanism for lobar pneumonia

A

S pneumonia

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7
Q

organism that causes BOTH Lobar and Bronchopneumonia

A

Klebsiella

S. pneumonia

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8
Q

interstitial (atypical) pneumonia - viruses

A
  1. influenza
  2. CMV
  3. RSV
  4. adenovirus
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9
Q

Lobar pneumonia - distribution

A

entire lobe or entire lung

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10
Q

bronchopneumonia - distribution

A

patchy distribution involving >= 1 lobe

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11
Q

interstitial atypical pneumonia - distribution

A

involve >= 1 lobe

DIFFUSE

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12
Q

lobar pneumonia - histology

A

intra - alveolar exudate –> consolidation

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13
Q

bronchopneumonia - histology

A

acute inflammatory infiltrates from bronchioles into adjacent alveoli

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14
Q

interstitial atypical pneumonia - histology

A

diffuse patchy inflammation localized to interstitial areas at alveolar walls

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15
Q

walking pneumonia

A

interstitial (atypical) pneumonia –> generally follows a more indolent course

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16
Q

interstitial atypical pneumonia - typical presentation

A

relatively mild URI symptoms

17
Q

gross phases of lobar pneumonia (and pathophysiology)

A
  1. congestion (congested vessels and edema)
  2. Red hepatization (due to exudate, neutrophils and haemorrhage in alveolar
  3. Gray hepatization (degration of red cells in the exudate)
  4. Resolution
18
Q

aspiration pneumonia seen in

A
  1. alcoholics
  2. comatose patients
  3. epileptics
19
Q

aspiration pneumonia - most often due to (organisms)

A

anaerobic bacteria in oropharynx (bacteroids, peptostreptococcus, fusobacterium)

20
Q

lung abscess - definition

A

localized collection of pus within parenchyma

21
Q

lung abscess - caused by (mechanism)

A
  1. aspiration (of orophyngeal contents)

2. bronchial obstruction (cancer)

22
Q

lung abscess - treatment

A

clindamycin

23
Q

lung abscess - CXR

A

Air - fluid levels (often)

24
Q

lung abscess - fluid levels in CXR suggest

A

cavitation

25
Q

lung abscess - organisms

A
  1. anaerobes (bacteroids, peptostreptococcus, fusobacterium)
  2. S aureus
  3. Klebsiella
26
Q

lung abscess - aerobic organisms

A

S aureus

klebsiella

27
Q

lung abscess - anaerobic organisms

A
  1. bacteroids
  2. peptostreptococcus
  3. fusobacterium
28
Q

S. Pneumonia - pneumonia type?

A

lobar or bronchopulmonary

29
Q

legionella - pneumonia type?

A

lobar or atypical

30
Q

klebsiella - pneumonia type?

A

lobar or bronchopulmonary (or lung abscess)

31
Q

S. aureus - pneumonia type?

A

Bronchopneumonia (or lung abscess)

32
Q

H. infl - pneumonia type?

A

bronchopneumonia

33
Q

Lung abscess 2ry to aspiration is most often found in …. (location)

A

right lung:
upright –> basal segment of right lowr lobe
supine –> posterior segment of right upper lobe or superior segment of right lower lobe