Research Article

A Prospective Evaluation of Two Rapid Phenotypical Antimicrobial Susceptibility Technologies for the Diagnostic Stewardship of Sepsis

Table 3

Polymicrobial BCs: identification results of the direct MALDI-TOF MS ID and Pheno ID compared to culture-based ID.

Direct MALDI-TOF IDMALDI-TOF score valueAdditional organism from culture IDAccelerate Pheno IDComment
3.000–2.3002.299–2.0001.999–1.700<1.700

Enterobacter cloacae1Staphylococcus warneriNo identificationSuspected off-panel, no AST
Klebsiella oxytoca1Citrobacter freundiKlebsiella spp.Klebsiella spp. detected correctly
Klebsiella pneumoniae1Staphylococcus haemolyticusKlebsiella spp.Gram-negative organism detected correctly
Klebsiella pneumoniae1Bacillus circulansKlebsiella spp./additional bacteria or yeasts, no AST, growth control failure
Enterococcus faecalis1Pseudomonas oryzihabitansEnterococcus faecalisGram-positive organism detected correctly, no AST
Enterococcus faecalis1Streptococcus parasanguinisEnterococcus faecalisGram-positive organism detected correctly, no AST
Enterococcus faecalis1Klebsiella pneumoniaeEnterococcus faecalis, Klebsiella spp.Gram-negative organism detected correctly, no AST