Pyonephrosis laboratory findings: Difference between revisions
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==Laboratory findings== | ==Laboratory findings== | ||
The initial workup done when suspecting a case of pyonephrosis are the following: | |||
Urine and blood samples must be drawn before the beginning of antibiotic therapy to avoid false negative results. | |||
{{Reflist|2}} | === Urinalysis and culture === | ||
Urine samples must be collected before starting the antibiotic therapy to avoid false negative results. | |||
If percutaneous nephrostomy is done, sample must be collected from the site above the obstruction | |||
Presence of white blood cells, bacteria, pus cells in the urine may indicate pyonephrosis. | |||
Cultures must be sent for gram stain, fungal pathogens and acid fast stain (if tuberculosis is suspected). | |||
=== Complete Blood Count (CBC) === | |||
CBC with differential count should be obtained which will reveal leukocytosis with neutrophilia. | |||
=== Blood Culture === | |||
Blood samples should also be collected prior to starting the antibiotic therapy to avoid false negative results. | |||
Blood cultures will be positive in pyonephrosis if the infection has spread to the bloodstream. | |||
References{{Reflist|2}} | |||
[[Category:Need content]] | [[Category:Need content]] | ||
Revision as of 16:12, 16 October 2021
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Harsh Vardhan Chawla, M.B.B.S.[2]
Laboratory findings
The initial workup done when suspecting a case of pyonephrosis are the following:
Urine and blood samples must be drawn before the beginning of antibiotic therapy to avoid false negative results.
Urinalysis and culture
Urine samples must be collected before starting the antibiotic therapy to avoid false negative results.
If percutaneous nephrostomy is done, sample must be collected from the site above the obstruction
Presence of white blood cells, bacteria, pus cells in the urine may indicate pyonephrosis.
Cultures must be sent for gram stain, fungal pathogens and acid fast stain (if tuberculosis is suspected).
Complete Blood Count (CBC)
CBC with differential count should be obtained which will reveal leukocytosis with neutrophilia.
Blood Culture
Blood samples should also be collected prior to starting the antibiotic therapy to avoid false negative results.
Blood cultures will be positive in pyonephrosis if the infection has spread to the bloodstream.
References