Table 2 Patient´s characteristics, vital signs, and blood gas analysis of critically ill patients on 30-day survival

Patient’s characteristics (MV ± SD)

 Age (years)

69.6 ± 16.4

74.9 ± 13.9

67.9 ± 16.8

< 0.001

 Sex, female [n, (%)]

585 (46.4%)

139 (46.8%)

446 (46.3%)

0.880

 Weight (kg)

78.5 ± 21.8

75.6 ± 20.7

79 ± 22

0.0184

 BMI (points)

25.1 ± 7

23.7 ± 5.7

25.6 ± 7.2

< 0.001

ABCDE problems [n, (%)]

 A (airway)

34 (2.7%)

4 (1.3%)

30 (3.1%)

0.093

 B (breathing)

294 (23.3%)

62 (20.9%)

232 (24.1%)

0.255

 C (circulation)

409 (32.4%)

128 (43.1%)

281 (29.1%)

< 0.001

 D (disability)

492 (39.0%)

96 (32.3%)

396 (41.1%)

0.007

 E (environment)

32 (2.5%)

7 (2.4%)

25 (2.6%)

0.710

Vital signs admission (MV ± SD)

 Systolic blood pressure (mmHg)

129.8 ± 44.5

116.3 ± 47.2

133.5 ± 43

< 0.001

 Heart rate (bpm)

96 ± 32.8

98.8 ± 30.3

95.3 ± 33.4

0.107

 Shock index (bpm/mmHg)

0.85 ± 0.48

1.02 ± 0.57

0.81 ± 0.45

< 0.001

 Oxygen saturation (%)

93.9 ± 7.3

92.6 ± 8.6

94.2 ± 6.9

0.001

 Respiratory rate (min⁻¹)

21.4 ± 10.4

23.8 ± 15.4

20.8 ± 8.4

< 0.001

 Glasgow coma score (points)

11.1 ± 4.8

8.46 ± 5.0

11.8 ± 4.4

< 0.001

 Temperature tympanal (°C)

36.2 ± 1.5

35.9 ± 1.9

36.3 ± 1.4

< 0.001

BGA parameters (MV ± SD)

 pH

7.31 ± 0.15

7.24 ± 0.21

7.34 ± 0.12

< 0.001

 pCO₂ (mmHg)

48 ± 19.3

51.4 ± 23.4

47 ± 17.7

< 0.001

 HCO⁻₃(mmol/l)

21.6 ± 5.6

19.2 ± 7.3

22.3 ± 4.8

< 0.001

 Hemoglobin (g/dl)

12.8 ± 2.8

12.4 ± 2.7

12.9 ± 2.8

0.007

 Lactate (mmol/l)

3.7 ± 3.7

6.1 ± 5.3

2.9 ± 2.7

< 0.001

 Glucose (mg/dl)

182.1 ± 113.1

204.2 ± 126.3

175.7 ± 108.0

< 0.001

 Na⁺ (mmol/l)

138.6 ± 6.3

138.8 ± 8.1

138.5 ± 5.7

0.476

 K⁺ (mmol/l)

4.4 ± 1

4.6 ± 1.4

4.3 ± 0.8

< 0.001

 Ca²⁺ (mmol/l)

1.2 ± 0.1

1.2 ± 0.1

1.2 ± 0.1

1.000

Procedures [n, (%)]:

 catecholamine

358 (28.4%)

152 (51.2%)

206 (21.4%)

< 0.001

 cardiopulmonary resuscitation

84 (6.7%)

68 (22.9%)

16 (1.7%)

< 0.001