Table 3.
Types of microorganisms found in culture
| Microorganism | Control group | Study group | ||||
|---|---|---|---|---|---|---|
| 0 h (at intubation) | 24 h | 48 h | 0 h (at intubation) | 24 h | 48 h | |
| Staphylococcus aureus | 8 | 12 | 13 | 8 | 13 | 14 |
| Escherichia coli | 5 | 9 | 10 | 4 | 6 | 6 |
| Pseudomonas aeruginosa | 0 | 1 | 3 | 0 | 2 | 2 |
| Acinetobacter species | 0 | 0 | 0 | 0 | 0 | 1 |
| Total number of positive cultures * | 13 (10 Med + 3 Surg) | 22 (16 + 8) | 26 (7 + 19) | 12 (9 Med + 3 Surg) | 21 | 23 (20 + 1 + 2) |
*
TOTAL NUMBER OF POSITIVE CULTURES = NUMBER OF POSITIVE CULTURES AT PATIENT END ONLY + NUMBER OF POSITIVE CULTURES AT MACHINE ENDS + NUMBER OF POSITIVE CULTURES AT BOTH PATIENT AND MACHINE ENDS.