Mycoplasma pneumonia laboratory findings: Difference between revisions
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==Overview== | ==Overview== | ||
==Laboratory Findings== | ==Laboratory Findings== | ||
Diagnosis of acute infections remains difficult; therefore, early recognition of outbreaks has been problematic. The challenge is to prevent secondary cases in outbreak by prompt initiation of control measures. | |||
''M. pneumoniae'' infections can be differentiated from other types of pneumonia by the relatively slow progression of symptoms, a positive blood test for cold-hemagglutinins in 50-70% of patients after 10 days of infection (cold-hemagglutinin-test should be used with caution or not at all since 50% of the tests are false-positive), lack of bacteria in a gram-stained sputum sample, and a lack of growth on blood agar. | ''M. pneumoniae'' infections can be differentiated from other types of pneumonia by the relatively slow progression of symptoms, a positive blood test for cold-hemagglutinins in 50-70% of patients after 10 days of infection (cold-hemagglutinin-test should be used with caution or not at all since 50% of the tests are false-positive), lack of bacteria in a gram-stained sputum sample, and a lack of growth on blood agar. | ||
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A urine test or a throat swab may also be done. | A urine test or a throat swab may also be done. | ||
==Sources== | |||
http://www.cdc.gov/ncidod/dbmd/diseaseinfo/mycoplasmapneum_t.htm | |||
==References== | ==References== | ||
{{Reflist|2}} | {{Reflist|2}} | ||
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[[Category:Disease]] | [[Category:Disease]] | ||
[[Category:Pulmonology]] | [[Category:Pulmonology]] | ||
[[Category: Needs overview]] | |||
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Revision as of 17:23, 20 November 2012
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
Overview
Laboratory Findings
Diagnosis of acute infections remains difficult; therefore, early recognition of outbreaks has been problematic. The challenge is to prevent secondary cases in outbreak by prompt initiation of control measures.
M. pneumoniae infections can be differentiated from other types of pneumonia by the relatively slow progression of symptoms, a positive blood test for cold-hemagglutinins in 50-70% of patients after 10 days of infection (cold-hemagglutinin-test should be used with caution or not at all since 50% of the tests are false-positive), lack of bacteria in a gram-stained sputum sample, and a lack of growth on blood agar.
Depending on the severity of illness, other tests may be done, including:
- Complete blood count (CBC)
- Blood cultures
- Blood tests for antibodies to mycoplasma
- Open lung biopsy (only done in very serious illnesses when the diagnosis cannot be made from other sources)
- Sputum culture to check for mycoplasma bacteria
A urine test or a throat swab may also be done.
Sources
http://www.cdc.gov/ncidod/dbmd/diseaseinfo/mycoplasmapneum_t.htm