Guajardo-Lara CE, Saldańa- Ramírez MI, Ayala-Gaytan JJ, Valdovinos-Chávez SB

Language: Spanish
References: 23
Page: 292-296
PDF size: 280.39 Kb.

ABSTRACT

Background: Harboring a high mortality, the incidence of sepsis is increasing; thus detection, identification and susceptibility tests of the involved microorganisms become urgent.
Methods: We reviewed the records from January 2013 until July 2014 of a total of 4110 blood culture bottles taken from adult patients in a private tertiary hospital.
Results: Growth of microorganisms was observed in 559 bottles (12.6%). We emphasize that 2648 blood cultures (60 %) were taken in two paired aerobic and anaerobic bottles drawn at the same time (1324 pairs); from these, growth was observed in 182 inoculated bottles drawn from two different sites at the same time from 135 patients (13.7 %). In 86 pairs of bottles with samples from 54 patients (40 %), growth occurred only in the aerobic blood culture bottles. Also, growth of microorganisms was observed only in anaerobic bottles in 24 pairs (13.19 %), corresponding to 21 patients (15.5 %, p ‹ 0.05 %). In blood cultures from 32 out of 60 patients with growth in both media (53 %), microbial growth was detected first in the anaerobic bottle.
Conclusions: The usefulness of blood cultures for anaerobes for the identification of obligate anaerobic bacteremia which rarely occur is low (2.2 % of patients with bacteremia); however, in 15.55 % of the patients the risk of completely overlook bacteremia was present, and in 53 % of patients with positive cultures, bacteremia was established earlier, and thus permitted earlier and accurate decision making.

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