Difference between revisions of "Aspiration Pneumonia"

Latest revision as of 18:51, 19 February 2011

Aspiration pneumonia (Image sourced from Bristol Biomed Image Archive with permission)

Response of the lungs to aspirated foreign material will depend on the nature of the material (e.g. food), the bacterial load and the distribution of the material within the lungs
Mild bronchopneumonia can develop into a severe necrotising pneumonia and in very severe cases can progress to gangrenous pneumonia (below)
In Cattle
- Associated with poor husbandry
- Regurgitated ruminal content
- Cranio-ventral distribution
- Respiratory insufficiency secondary to congenital cardiac disease
In Horses
- Most commonly in right ventral lung lobe (most rostral secondary bronchus leads to right accessory lobe)
- Risk factors:
  - Oesophageal obstruction
  - Spontaneous reflux (GI obstruction, equine grass sickness)
  - Dysphagia
  - Iatrogenic
    - Nasogastric tube in the wrong place
In Dogs
- Most commonly vomited/regurgitated material or contrast medium introduced into airways
- In severe acute cases may die from septic shock
- In chronic cases -> bronchopneumonia
- Common sequel to myasthenia gravis, megaoesophagus or persistent right aortic arch

@@ Line 1: / Line 1: @@
 [[Image:Inhalation pneumonia.jpg|right|thumb|150px|<small><center>Aspiration pneumonia (Image sourced from Bristol Biomed Image Archive with permission)</center></small>]]
 *Response of the lungs to aspirated foreign material will depend on the nature of the material (e.g. food), the bacterial load and the distribution of the material within the lungs
@@ Line 19: / Line 18: @@
 **Most commonly [[Control of Feeding - Anatomy & Physiology#The Vomit Reflex|vomited]]/regurgitated material or contrast medium introduced into airways
 **In severe acute cases may die from septic shock
-**In chronic cases -> [[Lungs Inflammatory - Pathology#Bronchopneumonia|bronchopneumonia]]
+**In chronic cases -> [[Bronchopneumonia|bronchopneumonia]]
 **Common sequel to [[Myasthenia Gravis|myasthenia gravis]], [[Megaoesophagus|megaoesophagus]] or [[Persistent Right Aortic Arch|persistent right aortic arch]]
 [[Category:Pneumonia]]