Difference between revisions of "Aspiration pneumonia"

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#redirect [[Pneumonia#Aspiration_pneumonia]]
'''Aspiration pneumonia''' is a type of [[pneumonia]].
 
A special type of aspiration pneumonia is ''lipoid pneumonia''. It is dealt with in the ''[[lipoid pneumonia]]'' article.
 
==General==
*Not associated with microorganisms - though empiric antibiotics are relatively common to cover infectious pneumonias that cannot be excluded easily on clinical grounds.<ref name=pmid21263315>{{Cite journal  | last1 = Raghavendran | first1 = K. | last2 = Nemzek | first2 = J. | last3 = Napolitano | first3 = LM. | last4 = Knight | first4 = PR. | title = Aspiration-induced lung injury. | journal = Crit Care Med | volume = 39 | issue = 4 | pages = 818-26 | month = Apr | year = 2011 | doi = 10.1097/CCM.0b013e31820a856b | PMID = 21263315 }}</ref>
 
*Usually seen in the context of a toxin and/or pathology that affects the swallowing and cough reflexes.<ref name=pmid16082150>{{Cite journal  | last1 = Ohrui | first1 = T. | title = Preventive strategies for aspiration pneumonia in elderly disabled persons. | journal = Tohoku J Exp Med | volume = 207 | issue = 1 | pages = 3-12 | month = Sep | year = 2005 | doi =  | PMID = 16082150 }}</ref>
 
Common associations:<ref name=pmid16082150/>
*[[Stroke]].
*[[Multiple sclerosis]].
*[[Alcohol]] intoxication.
 
Other risk factors:<ref name=pmid21263315/>
*Traumatic brain injury.
*Seizure disorder.
*Bowel obstruction.
*Drugs.
*[[Obesity]].
*Labour.
 
==Gross==
*More common in the right lung.
**Right main stem bronchus is more vertical.
 
==Microscopic==
Features:
*Neutrophils.
*Foreign material, e.g. plant matter.
*+/-Foreign body giant cells.
*+/-Microorganisms.
 
DDx:
*[[Acute infectious pneumonia]].
 
===Images===
<gallery>
Image:Aspiration_pneumonia_%281%29.jpg | Aspiration pneumonia - 1 - (WC)
Image:Aspiration_pneumonia_%282%29.jpg | Aspiration pneumonia - 2 - (WC)
Image:Aspiration_pneumonia_%283%29.jpg | Aspiration pneumonia - 3 - (WC)
</gallery>
<gallery>
Image: Aspiration pneumonia -- very low mag.jpg | AP - very low mag. (WC)
Image: Aspiration pneumonia - alt -- low mag.jpg | AP - low mag. (WC)
Image: Aspiration pneumonia -- intermed mag.jpg | AP - intermed. mag. (WC)
Image: Aspiration pneumonia - alt -- high mag.jpg | AP - high mag. (WC)
Image: Aspiration pneumonia -- very high mag.jpg | AP - very high mag. (WC)
</gallery>
 
==See also==
*[[Pneumonia]].
 
==References==
{{Reflist|1}}


[[Category:Diagnosis]]
[[Category:Diagnosis]]
[[Category:Pulmonary pathology]]

Latest revision as of 01:37, 24 March 2019

Aspiration pneumonia is a type of pneumonia.

A special type of aspiration pneumonia is lipoid pneumonia. It is dealt with in the lipoid pneumonia article.

General

  • Not associated with microorganisms - though empiric antibiotics are relatively common to cover infectious pneumonias that cannot be excluded easily on clinical grounds.[1]
  • Usually seen in the context of a toxin and/or pathology that affects the swallowing and cough reflexes.[2]

Common associations:[2]

Other risk factors:[1]

  • Traumatic brain injury.
  • Seizure disorder.
  • Bowel obstruction.
  • Drugs.
  • Obesity.
  • Labour.

Gross

  • More common in the right lung.
    • Right main stem bronchus is more vertical.

Microscopic

Features:

  • Neutrophils.
  • Foreign material, e.g. plant matter.
  • +/-Foreign body giant cells.
  • +/-Microorganisms.

DDx:

Images

  • Aspiration pneumonia - 1 - (WC)

  • Aspiration pneumonia - 2 - (WC)

  • Aspiration pneumonia - 3 - (WC)

  • AP - very low mag. (WC)

  • AP - low mag. (WC)

  • AP - intermed. mag. (WC)

  • AP - high mag. (WC)

  • AP - very high mag. (WC)

See also

References

  1. ↑ 1.0 1.1 Raghavendran, K.; Nemzek, J.; Napolitano, LM.; Knight, PR. (Apr 2011). "Aspiration-induced lung injury.". Crit Care Med 39 (4): 818-26. doi:10.1097/CCM.0b013e31820a856b. PMID 21263315.
  2. ↑ 2.0 2.1 Ohrui, T. (Sep 2005). "Preventive strategies for aspiration pneumonia in elderly disabled persons.". Tohoku J Exp Med 207 (1): 3-12. PMID 16082150.
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