Table 1. Characteristics of study patients at ICU admission.
Variables | Survivors (n=63) | Nonsurvivors (n=30) | P value |
---|---|---|---|
Age, years | 58 [40, 67] | 62 [52, 71] | 0.046 |
Male gender | 35 [56] | 22 [73] | 0.100 |
SAPS II | 57 [48, 71] | 49 [42, 74] | 0.399 |
SOFA score | 8 [5, 10] | 8 [5, 11] | 0.843 |
Respiratory system | 2 [2, 3] | 3 [2, 4] | 0.045 |
Nervous system | 2 [1, 4] | 3 [1, 3] | 0.770 |
Cardiovascular system | 0 [1, 4] | 0 [0, 4] | 0.970 |
Liver | 0 [0, 0] | 0 [0, 1] | 0.093 |
Coagulation | 0 [0, 0] | 0 [0, 1] | 0.340 |
Kidneys | 0 [0, 2] | 0 [0, 3] | 0.940 |
Comorbidities | |||
Diabetes | 16 [25] | 9 [30] | 0.640 |
COPD | 7 [11] | 8 [27] | 0.057 |
Cardiac failure | 6 [10] | 5 [17] | 0.319 |
Cirrhosis | 4 [6] | 4 [13] | 0.261 |
Chronic kidney failure | 5 [8] | 2 [7] | 0.828 |
Immunodeficiency | 17 [27] | 10 [33] | 0.528 |
Location before ICU admission | 0.549 | ||
Home | 26 [41] | 9 [30] | |
Other wards | 25 [40] | 15 [50] | |
Other ICUs | 12 [19] | 6 [20] | |
Cause for ICU admission | |||
Acute exacerbation of COPD | 4 [6] | 2 [7] | 0.954 |
Respiratory acute failure | 11 [17] | 4 [13] | 0.767 |
Community-acquired pneumonia | 9 [14] | 6 [20] | 0.484 |
Nosocomial pneumonia | 11 [17] | 6 [20] | 0.767 |
ARDS | 7 [11] | 1 [3] | 0.430 |
Cardiac arrest | 5 [8] | 2 [7] | 0.828 |
Neurologic failure | 20 [32] | 5 [17] | 0.142 |
Poisoning | 5 [8] | 0 [0] | 0.171 |
Septic shock | 14 [22] | 8 [27] | 0.637 |
Cellulitis | 3 [5] | 3 [10] | 0.383 |
Prior antimicrobial treatment | 56 [89] | 27 [90] | 0.872 |
Percentage of time spent with hyperoxemia, mean ± SD | 44±21 | 48±23 | 0.590 |
Results of blood gases | |||
PaO2, mmHg | 116 [85, 173] | 112 [80, 172] | 0.493 |
PaO2 >120 mmHg | 31 [49] | 13 [43] | 0.551 |
PaO2/FiO2 | 192 [133, 287] | 171 [118, 252] | 0.410 |
Data are presented as n [%] or median [interquartile range], unless otherwise indicated. SAPS, simplified acute physiology score; SOFA, sequential organ failure assessment; COPD, chronic obstructive pulmonary disease; ICU, intensive care unit; ARDS, acute respiratory distress syndrome; PaO2, partial pressure of arterial oxygen; FiO2, fraction of inspired O2.