Pneumonia Types & Classification

Pneumonia types can be classified in several ways;

1. Early Classification Pneumonia
• Pathology classification
  Initial descriptions of pneumonia focused on the anatomic or pathologic appearance of the lung, either by direct inspection at autopsy or by its appearance under a microscope. 
• Microbiology classification
  This classification arose when pneumonia know is caused by microorganism.
• Radiology classification
  With the advent of modern microbiology, classification based upon the causative microorganism became possible. Determining which microorganism is causing an individual's pneumonia is an important step in deciding treatment type and length. Sputum cultures, blood cultures, tests on respiratory secretions, and specific blood tests are used to determine the microbiologic classification. Because such laboratory testing typically takes several days, microbiologic classification is usually not possible at the time of initial diagnosis.
2. Combined Clinical classification
   Pneumonia classified by combined clinical work by combine more than one factors such as age, risk factors for certain microorganisms, the presence of underlying lung disease and underlying systemic disease, and whether the person has recently been hospitalized.
3. Community-acquired Pneumonia
   Community-acquired pneumonia (CAP) is the most common type of pneumonia. It is infectious pneumonia in a person who has not recently been hospitalized.
4. Hospital-acquired Pneumonia
   It is also called nosocomial pneumonia, is pneumonia acquired during or after hospitalization for another illness or procedure with onset at least 72 hrs after admission.

Other pneumonia types:

• Severe acute respiratory syndrome (SARS)
  
• Bronchiolitis obliterans organizing pneumonia (BOOP)
  
• Eosinophilic pneumonia
  
• Chemical pneumonia
  
• Aspiration pneumonia
  

Main Article: Pneumonia