Aspiration pneumonia laboratory tests: Difference between revisions

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{{Aspiration pneumonia}}
{{Aspiration pneumonia}}


{{CMG}}; {{AE}}  
{{CMG}};{{AE}} {{SSH}}


==Overview==
==Overview==
An elevated/reduced concentration of serum/blood/urinary/CSF/other [lab test] is diagnostic of [disease name].
Different laboratory tests might be used in patients with aspiration pneumonia. [[Sputum]] analysis including [[Gram staining|gram stain]] and culture must be done in patients with [[cough]]. [[Arterial blood gas|ABG]] may show acute [[hypoxemia]] and decreased mixed venous [[oxygen saturation]]. [[Complete blood count|CBC]] shows [[leukocytosis]] with left shift or [[leukopenia]], [[anemia]], or [[thrombocytopenia]].


OR
==Laboratory Tests==
===Routine Tests===
Findings in routine blood tests are based on the severity of the disease and the cause, they can include the following:<ref name="SolomonWunderink2014">{{cite journal|last1=Solomon|first1=Caren G.|last2=Wunderink|first2=Richard G.|last3=Waterer|first3=Grant W.|title=Community-Acquired Pneumonia|journal=New England Journal of Medicine|volume=370|issue=6|year=2014|pages=543–551|issn=0028-4793|doi=10.1056/NEJMcp1214869}}</ref>
*[[Complete blood count|CBC]] shows:
**[[Leukocytosis]] with left shift (in cases of bacterial pneumonia)
**[[Leukopenia]] (in cases of atypical pneumonia)
**[[Eosinophilia]] (in cases of [[eosinophilic pneumonia]])
**[[Anemia]]
**[[Thrombocytopenia]]
*[[Hyponatremia]]
*Elevated [[BUN]]
*[[ABG]] may show:
**Acute [[hypoxemia]]
**Normal to low partial pressure of [[carbon dioxide]]
**Decreased mixed venous oxygen saturation if a patient is in [[Sepsis|septic shock]]
**Decreased [[Bicarbonate|HCO<sub>3</sub>]]
**High [[Lactic acidosis|lactate level]] if a patient is in [[Sepsis|septic shock]]


Laboratory findings consistent with the diagnosis of [disease name] include [abnormal test 1], [abnormal test 2], and [abnormal test 3].
===Sputum Gram Stain and Culture===
 
*[[Sputum]] samples should be obtained in all patients with productive [[cough]].
OR
*[[Gram staining|Gram stain]] and culture should be performed to assess the causative agent and guide the therapy.
 
[Test] is usually normal for patients with [disease name].
 
OR
 
Some patients with [disease name] may have elevated/reduced concentration of [test], which is usually suggestive of [progression/complication].
 
OR
 
There are no diagnostic laboratory findings associated with [disease name].
 
==Laboratory Findings==
*An elevated/reduced concentration of serum/blood/urinary/CSF/other [lab test] is diagnostic of [disease name].
*There are different laboratory tests that are used for diagnosis of aspiration pneumonia and following complications which include:
**Arterial Blood Gas and Mixed Venous Gas Analysis show:
*** Acute hypoxemia
*** Normal to low partial pressure of carbon dioxide
*** High lactate level if a patient is in septic shock
*** Decreased mixed venous oxygen saturation if a patient is in septic shock


==References==
==References==
{{Reflist|2}}
{{Reflist|2}}


{{WH}}
[[Category:Medicine]]
{{WS}}
[[Category:Pulmonology]]
[[Category: (name of the system)]]
[[Category:Up-To-Date]]
[[Category:Emergency medicine]]

Latest revision as of 20:29, 29 July 2020

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1];Associate Editor(s)-in-Chief: Sadaf Sharfaei M.D.[2]

Overview

Different laboratory tests might be used in patients with aspiration pneumonia. Sputum analysis including gram stain and culture must be done in patients with cough. ABG may show acute hypoxemia and decreased mixed venous oxygen saturation. CBC shows leukocytosis with left shift or leukopenia, anemia, or thrombocytopenia.

Laboratory Tests

Routine Tests

Findings in routine blood tests are based on the severity of the disease and the cause, they can include the following:[1]

Sputum Gram Stain and Culture

  • Sputum samples should be obtained in all patients with productive cough.
  • Gram stain and culture should be performed to assess the causative agent and guide the therapy.

References

  1. Solomon, Caren G.; Wunderink, Richard G.; Waterer, Grant W. (2014). "Community-Acquired Pneumonia". New England Journal of Medicine. 370 (6): 543–551. doi:10.1056/NEJMcp1214869. ISSN 0028-4793.