Pneumonia laboratory findings: Difference between revisions
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===Routine 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> | 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> | ||
*[[Leukocytosis]] | *[[Leukocytosis]] with left shift (in cases of bacterial pneumonia) | ||
*[[Leukopenia]] (in cases of atypical pneumonia) | |||
*[[Eosinophilia]] (in cases of [[eosinophilic pneumonia]]) | *[[Eosinophilia]] (in cases of [[eosinophilic pneumonia]]) | ||
*[[Anemia]] | *[[Anemia]] | ||
Revision as of 18:44, 4 November 2014
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1];Associate Editor(s)-in-Chief: Alejandro Lemor, M.D. [2]
Overview
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]
- Leukocytosis with left shift (in cases of bacterial pneumonia)
- Leukopenia (in cases of atypical pneumonia)
- Eosinophilia (in cases of eosinophilic pneumonia)
- Anemia
- Hyponatremia
- Thrombocytopenia
- Elevated BUN
- Findings of lactic acidosis (decreased HCO3, increased lactic acid levels)
Sputum Gram Stain and Culture
- Sputum samples should be obtained of all patients with productive cough
- Gram-stain and culture should be performed to assess the causative agent and guide the therapy.
Other Laboratory Tests
Urine Antigen Test [2]
- Used to diagnose Legionella disease.
- The presence of the antigen in urine can be detected in 24 hours since the onset of the symptoms
- The severity of Legionella disease increases the sensitivity of the urinary antigen test.
References
- ↑ 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.
- ↑ Couturier MR, Graf EH, Griffin AT (2014). "Urine antigen tests for the diagnosis of respiratory infections: legionellosis, histoplasmosis, pneumococcal pneumonia". Clin Lab Med. 34 (2): 219–36. doi:10.1016/j.cll.2014.02.002. PMID 24856525.