Research Article
Risk Factors for and Clinical Outcomes of Polymicrobial Acinetobacter baumannii Bloodstream Infections
Table 1
Demographic and clinical characteristics of monomicrobial AB-BSI and polymicrobial AB-BSI patients.
| | Characteristics | Total () | Monomicrobial () | Polymicrobial () | value |
| | years | 311 (52.4%) | 255 (54.5%) | 56 (44.4%) | 0.046 | | Male sex | 419 (70.5%) | 330 (70.5%) | 89 (70.6%) | 0.979 | | Comorbidities | | | | | | Diabetes mellitus | 82 (13.8%) | 62 (13.2%) | 20 (15.9%) | 0.448 | | Chronic kidney disease | 67 (11.3%) | 51 (10.9%) | 16 (12.7%) | 0.571 | | Chronic liver disease | 45 (7.6%) | 34 (7.3%) | 11 (8.7%) | 0.581 | | COPDa or severe asthma | 77 (13%) | 59 (12.6%) | 18 (14.3%) | 0.618 | | Chronic cardiac insufficiency | 130 (21.9%) | 98 (20.9%) | 32 (25.4%) | 0.283 | | Solid tumour | 77 (13%) | 68 (14.5%) | 9 (7.1%) | 0.028 | | Trauma | 146 (24.6%) | 119 (25.4%) | 27 (21.4%) | 0.355 | | Burn injury | 68 (11.4%) | 39 (8.3%) | 29 (23.0%) | <0.001 | | Hypertension | 190 (32%) | 145 (31%) | 45 (35.7%) | 0.312 | | Cerebrovascular accident | 166 (27.9%) | 131 (28%) | 35 (27.8%) | 0.962 | | CCIb score, median (IQR) | 2 (1,3) | 2 (1,3) | 2 (0,3) | 0.507 | | APACHE II score, median | 18 (13,22) | 18 (14,22) | 17 (13,22) | 0.375 | | SOFA score, median | 6 (4,9) | 6 (4,9) | 6 (3,9) | 0.442 | | Pitt bacteraemia score, median | 4 (3,6) | 4 (3,6) | 4.5 (3,6) | 0.704 | | Hospitalization ward | | | | | | Medical | 8 (1.3%) | 5 (1.1%) | 3 (2.4%) | 0.257 | | Surgical | 63 (10.6%) | 47 (10%) | 16 (12.7%) | 0.390 | | ICU | 523 (88%) | 416 (88.9%) | 107 (84.9%) | 0.223 | | Previous treatment | | | | | | Hyperalimentation | 227 (38.2%) | 176 (37.6%) | 51 (40.5%) | 0.556 | | Mechanical ventilation () | 550 (92.6%) | 434 (92.7%) | 116 (92.1%) | 0.798 | | Surgery | 369 (62.1%) | 295 (63%) | 74 (58.7%) | 0.377 | | Blood transfusion | 247 (41.6%) | 189 (40.4%) | 58 (46.0%) | 0.254 | | Renal replacement therapy | 109 (18.4%) | 84 (17.9%) | 25 (19.8%) | 0.626 | | Carbapenem exposure | 237 (39.9%) | 182 (38.9%) | 55 (43.7%) | 0.333 | | Invasive devices | | | | | | Central line | 558 (93.9%) | 441 (94.2%) | 117 (92.9%) | 0.566 | | Indwelling urinary catheter | 541 (91.1%) | 424 (90.6%) | 117 (92.9%) | 0.430 | | Drainage (any site) | 253 (42.6%) | 197 (42.1%) | 56 (44.4%) | 0.636 | | Prior hospital stay, median days (IQR) | 11 (7,18) | 11 (6,18) | 11.5 (7,20) | 0.367 | | Nosocomial infection | 559 (94.1%) | 438 (93.6%) | 121 (96%) | 0.301 |
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aChronic obstructive pulmonary disorder. bCharlson Comorbidity Index.
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