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18 Am J Clin Pathol 2009;132:18-2518 DOI: 10.1309/AJCP0H2DAMBXZUSS

American Society for Clinical Pathology

Microbiology and Infectious Disease / RepoRting gRam StainSof Blood CultuReSe

Impact of Reporting Gram Stain Results From BloodCulture Bottles on the Selection of Antimicrobial Agents

Yuki Uehara, MD, PhD,1,2 Michiko Yagoshi, MT,3 Yumiko Tanimichi, MT,3 Hiroko Yamada, MT,3

Kazuo Shimoguchi, MT,3 Sachiyo Yamamoto, MT,3 Mitsuru Yanai, MD, PhD,1and Kazunari Kumasaka, MD, PhD1,3

Key Words: Blood culture; Gram stain; Antimicrobials; Empiric therapy

DOI: 10.1309/AJCP0H2DAMBXZUSS

A b s t r a c t

We assessed the usefulness of reporting direct

blood Gram stain results compared with the results of

positive blood cultures in 482 episodes and monitored

impact on selection of antimicrobial treatment. We

found that the reporting groups Staphylococcus

spp, Pseudomonas spp and related organisms,

and yeasts identified in this way matched perfectly

with later culture identification. When the report

indicatedStaphylococcus spp orPseudomonasspp and related organisms, physicians started or

changed antimicrobials suitable for these bacteria

more frequently than when other streptococci and

family Enterobacteriaceae were reported (P