García MCR

Language: Spanish
References: 10
Page: 100-103
PDF size: 94.43 Kb.

ABSTRACT

Routine use of anaerobic blood-cultures in diagnosis of bacteremia is controversial. It is necessary to dictate their practical and economical true value.
Material and methods. An observational study was made. Paired blood cultures (aerobic and anaerobic) were processed between June 2009 and December 2010, analysis of the proportions and differences in the use of both methods for bacteriemia diagnosis, with special emphasis on the use of anaerobic blood cultures was made.
Results. 1354 blood cultures were included, 677 aerobic blood cultures and 677 anaerobic blood cultures, 460 were taken in 2009 (230 for each type) and 894 in 2010. In 2009 for the aerobic, 199/230 (86.5%) had no showed growth and 31/230 (13.5%) is presented growth, while anaerobic cultures, 224/230 (97.4%) were negative and 6/230 (2.6%) were positive. In 2010, of the aerobic cultures 396/447 (88.6%) were negative and 51 (11.4%) positive, and in anaerobic cultures 435/447 (97.3%) were negative and only 12/447 (2.7%) were positive.
Conclusion. The use of the anaerobic bottle should be avoided as routine study. The incidence of positive blood cultures for anaerobes is low, being facultative microorganisms that were isolated in 98% of aerobic blood cultures.

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