TABLE 1.
Yield of microorganisms from the conventional agar and broth method compared with that by the BACTEC method
| Microorganism (no. of patients) | Total | No. of microorganisms detected with:
|
P value | ||
|---|---|---|---|---|---|
| BACTEC Peds Plus/F bottle only | Conventional agar and broth method only | Both methods | |||
| Pathogensa | |||||
| All microorganisms (45) | 62 | 11 | 0 | 51 | 0.001 |
| Staphylococcus aureus (20) | 29 | 1 | 0 | 28 | 1.0 |
| Staphylococcus spp., coagulase negative (11) | 14 | 2 | 0 | 12 | 0.5 |
| Streptococcus, group B (3) | 4 | 3 | 0 | 1 | 0.25 |
| Streptococcus, group C (2) | 3 | 1 | 0 | 2 | 1.0 |
| Streptococcus, group G (1) | 3 | 0 | 0 | 3 | |
| Viridans group streptococci (3) | 3 | 2 | 0 | 1 | 0.5 |
| Enterococcus species (1) | 2 | 1 | 0 | 1 | 1.0 |
| Pseudomonas aeruginosa (1) | 1 | 0 | 0 | 1 | |
| Morganella morganii (1) | 1 | 0 | 0 | 1 | |
| Yersinia enterocolitica (1) | 1 | 0 | 0 | 1 | |
| Enterobacter cloacae (1) | 1 | 1 | 0 | 0 | 1.0 |
| Contaminantsa | |||||
| All microorganisms (12) | 12 | 1 | 11 | 0 | 0.006 |
| Staphylococcus spp., coagulase negative (4) | 4 | 0 | 4 | 0 | 0.125 |
| Bacillus species (2) | 2 | 0 | 2 | 0 | 0.5 |
| Burkholderia pickettii (2) | 2 | 0 | 2 | 0 | 0.5 |
| Staphylococcus aureus (1) | 1 | 0 | 1 | 0 | 1.0 |
| Viridans group streptococci (1) | 1 | 1 | 0 | 0 | 1.0 |
| Gram-negative bacillus (not identified) (1) | 1 | 0 | 1 | 0 | 1.0 |
| Corynebacterium species (1) | 1 | 0 | 1 | 0 | 1.0 |
| Indeterminate | |||||
| All microorganisms | |||||
| Staphylococcus spp., coagulase negative (2) | 2 | 1 | 1 | 0 | 1.0 |
| Staphylococcus aureus (1) | 1 | 1 | 0 | 0 | 1.0 |
a
Pathogen versus contaminant on the basis of a medical history review.