TABLE 2.
Comparative yields of clinically important isolates from adequately filled bottles for patients on antimicrobial therapy by the VTI and 3D blood culture systems
| Microorganism | No. of isolates recovered from:
|
P | ||||||
|---|---|---|---|---|---|---|---|---|
| Both systems | VTI only | 3D only | ||||||
| Gram-positive cocci
|
||||||||
| S. aureus | 6 | 5 | 4 | NSa | ||||
| Coagulase-negative staphylococci | 7 | 3 | 1 | NS | ||||
| Streptococcus and Enterococcus spp.b | 9 | 5 | 0 | NS | ||||
| Gram-negative bacilli
|
||||||||
| Enterobacteriaceaec | 15 | 8 | 4 | NS | ||||
| Nonfermentersd | 7 | 1 | 0 | NS | ||||
| Anaerobic bacteria (Eubacterium lentum) | 1 | 0 | 0 | NS | ||||
| Yeastse | 6 | 3 | 1 | NS | ||||
| All microorganisms | 51 | 25 | 10 | <0.025 | ||||
a
NS, not significant (P > 0.05).
b
Includes six Enterococcus faecalis, five Enterococcus faecium, and two Enterococcus avium isolates and one beta-hemolytic streptococcus.
c
Includes seven Escherichia coli, six Klebsiella pneumoniae, five Serratia marcescens, five Enterobacter cloacae, two Serratia liquefaciens, one Proteus mirabilis, and one Salmonella enteritidis group D isolate.
d
Includes seven Stenotrophomonas maltophilia isolates and one Pseudomonas aeruginosa isolate.
e
Includes nine Candida parapsilosis isolates and one Candida albicans isolate.