Infectious disease Flashcards
1
Q
Lobar pneumonia: cause
A
- congestion: Active hyperemia, few Nphil
- Red hep: nphils present and fibrin, lung feels liver like
- grey hep: fibrin cell death
- resolution
2
Q
Lobar pneumonia: Strep Pneumonia
A
- Strep pneumonia: most often the cause, especially in AA, penicillin treats it
- gram positive lancet shaped rods
- pneumovax and prevnar (for kids) are vaccines
- fibrin pyrulent exudate
3
Q
Lobar pneumonia: Klebsiella
A
- most frequent cuase of gram neg
- aspired in old people and drunks / malnourished
- forms an abcess
- thick blood tinged sputum
4
Q
Lobar: staph aureus
A
- microabscess/ empyema
- IV drug user
- Most common secondary infection
- plays role in hospital acquired pneu
5
Q
Lobar: Haemophilus influenezae
A
- gram negative
- common in kids,
- Exacerbates COPD (second is Moraxells Catarrhalis)
6
Q
Lobar: Pseudomonas aerguinosa
A
gram -
common in CF patients
7
Q
TB: histo
A
Ghon complex granuloma (complex of M*)
-caseating granuloma
Primary progressive: in kids
Secondary: reactivated (miliary)
8
Q
Atypical pneumonia: cause
A
- Mycoplasm infection of alveolar
- Moderate sputum, no consolidation
- especially in college or in military
- ground glass
9
Q
P. jirovecci
A
Replicated in human lung
- goblet shaped cell
- GMS stain for chain structures
- Attacks immunocomp
- Treat with bactrim
10
Q
Aspergillus
A
Allergic aspergillos: allergy in asthmatics
Aaspergilloma: non invasive fungus ball occupies the sinus
Invasive aspergillosis: wedge Infarcted lung. (Or PE)
Can cause hemoptysis
11
Q
Legionella pneumophilia
A
- found in aquatic envionrments (water cooling towers…) either aerosolized or inhaled while drinking
- common in predisposed individuals (cardiac, renal, immunologic, hematologic diseas)
- organ transplants are susceptable
12
Q
mycoplasma pneumoniae
A
- common in children and young adults
- occur in closed communities (schools, military camps, prisons)
