Table 2.
Overview of Gram-negative and other micro-organisms on 213 catheter tips
| No subsequent GNB (n = 173) | Subsequent GNB (n = 40) | p-value | OR (95% CI) | |
|---|---|---|---|---|
| Type of GNM on catheter tip | ||||
| Enterobacter species | 35 (20) | 16 (40) | 0.08 | 2.63 (1.26–5.47) |
| Escherichia coli | 19 (11) | 5 (13) | 0.89 | 1.09 (0.34–3.15) |
| Klebsiella species | 32 (18) | 8 (20) | 0.76 | 1.15 (0.48–2.72) |
| Morganella morganii | 10 (6) | 2 (5) | 0.84 | 0.86 (118–4.08) |
| Proteus species | 17 (10) | 2 (5) | 0.33 | 0.48 (0.11–2.18) |
| Pseudomonas species | 31 (18) | 10 (25) | 0.31 | 1.53 (0.68–3.45) |
| Serratia species | 10 (6) | 1 (3) | 0.4 | 0.40 (0.05–3.36) |
| Stenotrophomonas maltophilia | 11 (6) | 1 (3) | 0.34 | 0.38 (0.05–3.01) |
| Othera | 11 (6) | 0 (0) | ||
| Multiple GNM on the catheter tip | 23 (13) | 6 (15) | 0.78 | 1.15 (0.43–3.04) |
| Other micro-organisms on the catheter tip | 53 (31) | 14 (35) | 0.59 | 1.22 (0.59–2.52) |
| Types of other micro-organisms | ||||
| Candida species | 2 (1) | 0 (0) | ||
| CNS | 37 (21) | 9 (23) | ||
| Corynebacterium species | 4 (2) | 0 (0) | ||
| Enterococcus species | 11 (6) | 2 (5) | ||
| Staphylococcus aureus | 7 (4) | 4 (10) | ||
Variables are expressed as the number of cases along with percentages
GNB, Gram-negative bacteremia (with isolates identical to that of the catheter tip); n, number of cases; GNM, Gram-negative micro-organisms; CNS, coagulase-negative Staphylococcus
aOther GNM: Acinetobacter species, Achromobacter species, Chryseobacterium indologenes, Citrobacter species, Moraxella catarrhalis, Providencia rettgeri, Pantoea agglomerans