Table 3.
Microorganisms grown in culture sets
| Organisma | n | % | Time to Positivity Mean, h | Range (Median) |
|---|---|---|---|---|
| Gram-positive bacteria, total | 86 | 22.6 | ||
| Methicillin–sensitive Staphylococcus aureus | 36 | 9.5 | 13.2 | 2.4–25.8 (12.7) |
| Methicillin–resistant Staphylococcus aureus | 4 | 1 | 11.4 | 8–13.5 (11.9) |
| Coagulase-negative Staphylococcus | 13 | 3.4 | 25.9 | 7.7–84.3 (20.9) |
| Other Staphylococci | 6 | 1.6 | 21 | 14.8–32.6 (17.35) |
| Group B Streptococcus | 4 | 1 | 10.1 | 9.6–11.6 (9.61) |
| Enterococcus faecalis | 8 | 2.1 | 16 | 7.9–38.1 (10.8) |
| Otherb | 15 | 3.9 | 34.3 | 10.8–78.8 (35.5) |
| Gram-negative bacteria, total | 28 | 7.4 | ||
| Serratia marcescens | 20 | 5.3 | 22.2 | 10.6–65.2 (16.2) |
| Escherichia coli | 4 | 1 | 11.8 | 11.7–12.6 (11.8) |
| Proteus mirabilis | 4 | 1 | 15.9 | 15.8–15.9 (15.9) |
| No bacterial growth | 266 | 70 |
a
There were no blood cultures with fungus growth.
b
Exiguobacterium species, Kocuria kristinae, Micrococcus, Corynebacterium, Arcanobacterium haemolyticum, and Gemella species.