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25 Cards in this Set

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Lobar pneumonia
S. pneumonia
gram + diplococci
takes over the entire lobe
exudate in alveoli
Bronchopneumonia causative agents
S. pyogenes
K. pneumonia
S. aureus
H. influenza
Pseudomonas
Features of bronchopneumonia
intra-alveolar exudate
patchy distribution
affects bronchi and enters alveoli
Interstitial pneumonia
M. pneumoniae
Most common in kids and young adults
Self limited
No intra-alveolar exudate
Intra-alveolar hyaline membrane
Dx of interstitial pneumonia
Sputum culture to demonstrate bacteria, but takes a really long time
Faster to test for cold agglutination of RBCs
Causes of viral pneumonia
Influenza virus
RSV
Adenovirus
Rhinovirus
Appearance of viral pneumonia
Giant cell formation
Rickettsial pneumonia
caused by C. burnetti most commonly
Spread by infected cattle through inhalation of dust or drinking unpasteurized milk
Ornithosis carinii
Inhalation of dried excreta of infected birds
Pneumocystis carinii
opportunistic infection seen in AIDS pts and immunocompromisd
All causes of lung abscess
Cancer
Aspiration pneumonia
Bacterial infections
Which bacterial infections cause lung abscesses?
S. pyogenes
S. aureus
Pseudomonas
Proteus
K. pneumonia
Actinomycosis
Candidiasis
Actinomycosis
Gram + anaerobe
--> abscess formation
yellow exudate
Nocardiosis
Opportunistic infection
Can disseminate to brain and meninges
CAndidiasis
Opportunistic infection
Blood-borne dissemination
Pulmonary, renal, hepatic abscesses
Vegetative endocarditis
Aspergillosis
Growth into BV
Hematogenous dissemination
Cryptococcis
Can --> cryptococcal meningitis Stain with India ink
Histoplasmosis
Has primary and disseminated forms
--> pulmonary lesions with late calcifciation
Disseminated form has multisystem involvement iwht infiltrates of marophages filled wiht fungal yeast forms
Coccidioidomycosis
Primary and disseminated forms
Fungal spherules that have endospores are found in granulomas
Who is likely to get S. pneumonia
Adverse effects
elderly/debilitated pt
Empyema
Who is likely to get S. aureus? Complications
Complication of viral pneumonia
IV drug users, debilitated hospital pts, elderly

Abscess (lung, brain, kidney), empyema,
Bacterial endocarditis
Who is likely to get K pneumonia? Complications
Hospitalized pts, diabetics, alcohoics

High mortality rate in elderly
Alveolar wall damage --> necrosis
Abscess formation
Who is likely to get H. influenza? Complications?
Children, debilitated adults, those with COPD

Meningitis and epiglottitis
Who is likely to get Legionella? Complications?
Severe pneumonia in imunocomp
What pneumonia causing organisms can also --> meningitis?
H. influenzae
Cryptococcus
Nocardiosis