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. 1989 Jul;27(7):1431–1433. doi: 10.1128/jcm.27.7.1431-1433.1989

Limited usefulness of quantitative culture of blood drawn through the device for diagnosis of intravascular-device-related bacteremia.

C V Paya 1, L Guerra 1, H M Marsh 1, M B Farnell 1, J Washington 2nd 1, R L Thompson 1
PMCID: PMC267586  PMID: 2768434

Abstract

The use of a differential quantitative blood culture technique (Isolator) to diagnose intravascular-device-related bacteremia (IDRB) was studied prospectively. During septic episodes in 44 patients, blood was obtained simultaneously through the suspected infected device and from a peripheral venipuncture. The blood samples were processed by the Isolator technique, which enables easy quantification of microorganisms. The cannula was removed, and its tip was cultured semiquantitatively. Of the 52 cannulas studied, 15 were the cause of IDRB, but only 7 of these showed a significantly higher bacterial count in blood obtained through the device compared with peripheral blood. The bacterial count was higher in blood drawn through the device than in peripheral blood in four of six cases that did not fulfill the definition of IDRB. Some blood cultures obtained through the device were positive despite negative cultures of peripheral blood and cannula tips (six cannulas). Quantitative blood cultures were not useful in diagnosing IDRB in this study.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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