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Table 1 Patients’ main characteristics

From: Variation of poorly ventilated lung units (silent spaces) measured by electrical impedance tomography to dynamically assess recruitment

Patient

Sex

Age (years)

BMI

SAPS II score (at ICU admission)

SOFA score (on day of study)

Etiology of acute respiratory failure

Days of intubation before study

ARDS (yes or no)

PaO2/FiO2 (mmHg)a

PEEP (cmH2O)a

Outcome

1

M

79

26

33

8

Thoracic trauma

7

Yes

160

8

Nonsurvivor

2

M

90

29

46

7

Sepsis

1

Yes

205

10

Survivor

3

M

71

29

30

10

Postoperative respiratory failure

2

No

230

7

Survivor

4

F

80

35

22

9

Postoperative respiratory failure

5

Yes

263

8

Survivor

5

M

69

33

30

4

Postoperative respiratory failure

2

No

168

8

Survivor

6

M

66

24

40

6

Sepsis

1

No

294

6

Survivor

7

F

85

19

38

5

Septic shock

1

No

273

7

Survivor

8

F

80

33

63

10

Sepsis in hemorrhagic shock

4

Yes

256

10

Survivor

9

F

76

24

33

8

Sepsis

2

No

258

7

Nonsurvivor

10

F

75

22

35

5

Postoperative respiratory failure

1

No

239

6

Survivor

11

F

72

26

38

10

Pneumonia

6

No

175

6

Survivor

12

F

78

35

38

11

Pneumonia

4

No

141

6

Survivor

13

M

71

34

30

9

Pancreatitis

2

Yes

98

12

Survivor

14

M

60

25

29

3

Sepsis

9

No

290

6

Survivor

Mean ± SD

7 M/7 F

75 ± 8

28 ± 5

36 ± 10

7 ± 2

 

4 ± 5

5 Yes/9 no

217 ± 62

7 ± 2

2 Nonsurvivors/12 survivors

  1. Abbreviations: BMI Body mass index, SAPS II Simplified Acute Physiology Score II, ICU Intensive care unit, SOFA Sequential Organ Failure Assessment, ARDS Acute respiratory distress syndrome, PaO 2 /FiO 2 Ratio of partial pressure of oxygen in arterial blood to fraction of inspired oxygen, PEEP Positive end-expiratory pressure
  2. aBefore starting the protocol (clinical)