Table 1.
Characteristics at Enrollment of Patients Newly Colonized with Pseudomonas aeruginosa
| Patient Characteristic | MDR Pseudomonas (n = 20) | Non-MDR Pseudomonas (n = 55) | p Value |
|---|---|---|---|
| Age, y (mean ± SD) | 61 ± 14 | 63 ± 13 | 0.45 |
| Male (%) | 13 (65) | 23 (42) | 0.08 |
| ICU (%) | |||
| medical | 12 (60) | 19 (35) | 0.15 |
| surgical, scheduled | 6 (30) | 25 (45) | |
| surgical, nonscheduled | 2 (10) | 11 (20) | |
| Chronic respiratory disease | 5 (25) | 11 (20) | 0.75 |
| Diabetes mellitus | 5 (25) | 8 (15) | 0.31 |
| Cancer | 3 (15) | 12 (22) | 0.75 |
| Immunosuppression | 4 (20) | 4 (7) | 0.20 |
| Days of hospitalization prior to ICU admission, median (25–75% percentile) | 0 (0–1) | 0 (0–2) | 0.70 |
| Days of hospitalization prior to first positive culture, median (25–75% percentile) | 12.5 (5–31) | 9 (3–15) | 0.052 |
| Days of ventilation prior to first positive culture, median (25–75% percentile) | 10 (5–23.5) | 5 (3–11) | 0.015 |
| APACHE II at ICU admission (mean ± SD) | 26 ± 8 | 23 ± 7 | 0.12 |
| SAPS II at ICU admission (mean ± SD) | 46 ± 14 | 44 ± 16 | 0.60 |
| ARDS at enrollment | 3 (15) | 2 (4) | 0.11 |
| ICU days, median (25–75% percentile) | 30 (17–55) | 20 (11–32) | 0.02 |
| Hospital days, median (25–75% percentile) | 37 (28.5–72) | 34 (21–47) | 0.046 |
APACHE = Acute Physiology and Chronic Health Evaluation; ARDS = acute respiratory distress syndrome; ICU = intensive care unit; MDR = multidrug-resistant; SAPS = Simplified Acute Physiology Score.