Pneumonia Flashcards
(41 cards)
What is pneumonia?
An inflammatory condition of the lung leading to abnormal alveolar filling with consolidation and exudation
What is the epidemiology of pneumonia?
It’s the single largest infectious cause of death in children worldwide
Who is most affected by pneumonia?
Children, elderly and those who are immuno-suppressed
What is the pathology of pneumonia?
During pulmonary infection, acute inflammation results in the migration of neutrophils out of the capillaries and into the alveoli. These cells phagocytose and release anti microbial enzymes and inhibitors
Leading to more inflammation and oedema
What 3 things can pneumonia be? (Pathology)
Infection
Chemical
Aspiration irritant
How many stages of pneumonia are there?
4
What are the 4 stages of pneumonia?
1) Consolidation
2) Red Hepatization
3) Gray Hepiatization
4) Resolution
What is the time frame of congestion?
First 24 hours
What happens during consolidation phase?
Vascular engorgement, intra-alveolar fluid and numerous bacteria
What does the lung look like during the consolidation phase?
Heavy, boggy and red
What is the time frame of the red hepatization phase?
2-3 days
What happens in the red hepatization phase?
Massive exudation develops with red blood cells, leukocytes and fibrin filling the alveolar spaces
What does the lung look like during the red hepatization phase?
Red, firm and airless, with a liver like consistency
What is the time frame of the gray hepatization phase?
4-6 days
What happens during the gray hepatization phase?
Progressive disintegration of red blood cells and the persistent of fibrin exudate
What is the time frame of the resolution phase?
6+ days
What happens during the resolution phase?
Consolidated exudate within the alveoli undergoes progressive digestion to produce debris (speutum) that is later reabsorbed, ingested by macrophages or coughed up
What are the 7 causes of pneumonia?
- bacteria
- fungi
- virus
- parasites
- chemical (chorine gas)
- aspiration
- inhalation (smoke and burns)
What are the 2 anatomical classifications of pneumonia?
- lobar pneumonia
- bronchopneumonia
What are the 4 setting classifications of pneumonia?
- CAP = community acquired pneumonia
- HCAP = health care associated pneumonia
- HAP = hospital acquired pneumonia
- VAP = ventilator acquired pneumonia
When is HCAP contracted?
When being nursed in hospital
When is HAP contracted?
Within 48 hours of being admitted into the hospital
When is VAP contracted?
48-72 hours after being put onto ventilation
Which are the 2 most common setting classification of pneumonia?
CAP and HAP