Respiratory infections Flashcards
Predisposing factors of pulmonary infections
Decreased cough reflex
Injury to cilia
Decreased function of alveolar macrophages
Edema or congestion
Retention of secretions
Classification of pneumonia
-clinical setting
-by organism
by morphology
Causative agent for bronchopneumonia
Streptococcus pneumoniae, Haemophilus influenza, Staphylococcus aureus
causative agent for lobar pneumonia
Streptococcus pneumoniae
Klebsiella, Legionella)
pathogenesis of lobar pneumonia
Exudation of fibrin-rich fluid
Neutrophil infiltration
Macrophage infiltration
Resolution
macroscopic pathology of lobar pneumonia
- Congestion
- Red hepatisation
- Grey hepatisation
- Resolution
complications of lobar pneumonia
Organisation (fibrous scarring)
Abscess
Bronchiectasis
Empyema (pus in the pleural cavity
complications of bronchopneumonia
Organisation
Abscess
Bronchiectasis
Empyema