Pneumonia - Lung abscess Flashcards
types of pneumonia
- lobar
- Bronchopneumonia
- Interstitial pneumonia
lobar pneumonia - typical organisms
- S pneumonia
- Legionella
- Klebsiella
Bronchopneumonia - typical organisms
- S. pneumonia
- S. aureus
- H. influenza
- Klebsiella
Interstitial pneumonia is also called
atypical pneumonia
interstitial (atypical) pneumonia - typical organisms
- Viruses (influenza, CMV, RSV, adenovirus)
- Mycoplasma
- Legionella
- Chlamydia
MC typical orgmanism for lobar pneumonia
S pneumonia
organism that causes BOTH Lobar and Bronchopneumonia
Klebsiella
S. pneumonia
interstitial (atypical) pneumonia - viruses
- influenza
- CMV
- RSV
- adenovirus
Lobar pneumonia - distribution
entire lobe or entire lung
bronchopneumonia - distribution
patchy distribution involving >= 1 lobe
interstitial atypical pneumonia - distribution
involve >= 1 lobe
DIFFUSE
lobar pneumonia - histology
intra - alveolar exudate –> consolidation
bronchopneumonia - histology
acute inflammatory infiltrates from bronchioles into adjacent alveoli
interstitial atypical pneumonia - histology
diffuse patchy inflammation localized to interstitial areas at alveolar walls
walking pneumonia
interstitial (atypical) pneumonia –> generally follows a more indolent course
interstitial atypical pneumonia - typical presentation
relatively mild URI symptoms
gross phases of lobar pneumonia (and pathophysiology)
- congestion (congested vessels and edema)
- Red hepatization (due to exudate, neutrophils and haemorrhage in alveolar
- Gray hepatization (degration of red cells in the exudate)
- Resolution
aspiration pneumonia seen in
- alcoholics
- comatose patients
- epileptics
aspiration pneumonia - most often due to (organisms)
anaerobic bacteria in oropharynx (bacteroids, peptostreptococcus, fusobacterium)
lung abscess - definition
localized collection of pus within parenchyma
lung abscess - caused by (mechanism)
- aspiration (of orophyngeal contents)
2. bronchial obstruction (cancer)
lung abscess - treatment
clindamycin
lung abscess - CXR
Air - fluid levels (often)
lung abscess - fluid levels in CXR suggest
cavitation
lung abscess - organisms
- anaerobes (bacteroids, peptostreptococcus, fusobacterium)
- S aureus
- Klebsiella
lung abscess - aerobic organisms
S aureus
klebsiella
lung abscess - anaerobic organisms
- bacteroids
- peptostreptococcus
- fusobacterium
S. Pneumonia - pneumonia type?
lobar or bronchopulmonary
legionella - pneumonia type?
lobar or atypical
klebsiella - pneumonia type?
lobar or bronchopulmonary (or lung abscess)
S. aureus - pneumonia type?
Bronchopneumonia (or lung abscess)
H. infl - pneumonia type?
bronchopneumonia
Lung abscess 2ry to aspiration is most often found in …. (location)
right lung:
upright –> basal segment of right lowr lobe
supine –> posterior segment of right upper lobe or superior segment of right lower lobe