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Predictive Value of Blood Cultures

Published online by Cambridge University Press:  21 June 2016

Victor Lorian*
Affiliation:
Department of Epidemiology and Infection Control, The Bronx Lebanon Hospital, Bronx, New York
Leonard Amaral
Affiliation:
Department of Clinical Laboratories, The Bronx Lebanon Hospital, Bronx, New York
*
Department of Epidemiology and Infection Control, The Bronx Lebanon Hospital Center, 1650 Grand Concourse, Bronx, NY 10457

Extract

The rising incidence of immunocompromised-patient infections caused by bacteria that are normally nonvirulent and indigenous to normal flora has focused attention on the contamination rate of blood cultures. This contamination is usually a consequence of the mode of collection or processing within the laboratory.

The contamination rates of blood cultures usually are reported to a hospital's quality assurance component and to the medical staff. In addition, the identification of organisms isolated from blood cultures is reported to the physician, regardless of whether the organism isolated is a contaminant or the infectious agent. Consequently, reporting positive blood cultures that reflect contamination in certain cases may trigger some physicians to initiate prompt antibacterial therapy. The contamination rate of the blood culture has, therefore, a serious impact on medical consequences as well as on resource use.

Type
Topics in Clinical Microbiology
Copyright
Copyright © The Society for Healthcare Epidemiology of America 1992

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