Table 1 Characteristics of the study groups on admission to the intensive care unit (ICU).
From: Readmission to a surgical intensive care unit: incidence, outcome and risk factors
All patients (n = 2852) | No readmission (n = 2471) | Readmission (n = 381) | p value | |
|---|---|---|---|---|
Age, mean ± SD (years) | 62 ± 15 | 61 ± 15 | 64 ± 14 | 0.001 |
Male gender (%) | 1828 (64.1) | 1578 (63.9) | 250 (65.6) | 0.506 |
Source of admission (%) | < 0.001 | |||
Operating room | 2213 (77.6) | 1944 (78.7) | 269 (70.6) | |
Emergency room | 130 (4.6) | 110 (4.5) | 20 (5.2) | |
Other hospital | 169 (5.9) | 136 (5.5) | 33 (8.7) | |
Others | 172 (6.0) | 133 (4.8) | 39 (10.3) | |
Comorbidities (%) | ||||
Cancer | 628 (22.0) | 555 (22.5) | 73 (19.2) | 0.148 |
Cancer therapy | 61 (2.1) | 52 (2.1) | 9 (2.4) | 0.746 |
Haematological cancer | 6 (0.2) | 6 (0.2) | - | 1.000 |
Chronic heart failure (NYHA IV) | 48 (1.7) | 38 (1.5) | 10 (2.6) | 0.125 |
Cirrhosis | 65 (2.3) | 55 (2.2) | 10 (2.6) | 0.627 |
Hypertension | 1437 (50.4) | 1247 (50.5) | 190 (49.9) | 0.828 |
Chronic renal failure | 288 (10.1) | 240 (9.7) | 48 (12.5) | 0.036 |
Diabetes | 617 (21.6) | 522 (21.1) | 95 (24.9) | 0.137 |
Primary diagnosis (%) | 0.024 | |||
Planned postoperative | 2268 (79.5) | 1995 (80.7) | 273 (71.7) | |
Unplanned admissions* | ||||
Trauma | 139 (4.9) | 122 (4.9) | 17 (4.5) | |
Cardiovascular | 124 (4.3) | 92 (3.7) | 32 (8.4) | |
Neurological | 109 (3.8) | 93 (3.8) | 16 (4.2) | |
Gastrointestinal | 64 (2.2) | 49 (2.0) | 15 (3.9) | |
Respiratory | 30 (1.1) | 23 (0.9) | 7 (1.8) | |
Others | 116 (4.1) | 95 (3.8) | 21 (5.5) | |
Sepsis syndromes (%) | 0.018 | |||
SIRS | 642 (22.5) | 552 (22.3) | 90 (23.6) | |
Sepsis | 57 (2.0) | 45 (1.8) | 12 (3.1) | |
Severe sepsis/septic shock | 32 (1.1) | 23 (0.9) | 9 (2.3) | |
Surgery within 24 hours of admission (%) | 2412 (84.6) | 2113 (85.5) | 299 (87.5) | < 0.001 |
Cardiac surgery | 1061 (37.2) | 933 (37.8) | 128 (33.6) | 0.118 |
Gastrointestinal | 564 (19.8) | 486 (19.7) | 78 (20.5) | 0.714 |
Neurosurgery | 415 (14.6) | 361 (14.6) | 54 (14.2) | 0.822 |
Trauma | 169 (5.9) | 149 (6.0) | 20 (5.2) | 0.548 |
Thoracic surgery | 156 (5.5) | 138 (5.6) | 18 (4.7) | 0.492 |
Others** | 104 (3.6) | 98 (3.9) | 7 (1.8) | 0.123 |
Mechanical ventilation | 1339 (49.2) | 1155 (48.9) | 184 (50.9) | 0.503 |
Admission scores, mean ± SD | ||||
TISS-28 score | 41.8 ± 10.7 | 41.7 ± 10.6 | 42.1 ± 11.3 | 0.367 |
SOFA score | 5.1 ± 3.4 | 5.0 ± 3.4 | 5.7 ± 3.5 | 0.001 |
SAPS2 score | 33.5 ± 16.4 | 32.9 ± 16.3 | 37.1 ± 16.4 | < 0.001 |