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Table 1 Patients' characteristics

From: Effect of a heated humidifier during continuous positive airway pressure delivered by a helmet

Patient

Age (years)

Sex

Weight (kg)

CPAP (cmH2O)

PaO2/FiO2 (mmHg)

PaCO2 (mmHg)

pH

RR (breaths/minute)

Cause of ARF

1

51

Female

110

7.5

290

70

7.25

25

Acute exacerbation of COPD

2

78

Male

90

7.5

274

63

7.28

22

Acute exacerbation of COPD

3

63

Male

80

5

230

65

7.27

30

Acute exacerbation of COPD

4

77

Female

70

5

170

29

7.44

25

CHF

5

64

Male

95

5

216

37

7.38

25

Pneumonia

6

74

Female

75

5

170

38

7.45

24

Pneumonia

7

47

Male

90

10

155

34

7.51

25

Pneumonia

8

79

Female

70

10

142

39

7.45

20

CHF

9

72

Female

70

10

225

41

7.47

25

CHF

Mean ± SD

67.2 ± 11.8

4 males/5 females

83.3 ± 13.9

7.2 ± 2.3

209 ± 52

46.2 ± 15.3

7.39 ± 0.1

24.5 ± 2.7

 
  1. ARF, acute respiratory failure; CHF, congestive heart failure; COPD, chronic obstructive pulmonary disease; CPAP, continuous positive airway pressure; FiO2, inspired oxygen fraction; PaO2, partial arterial pressure of oxygen; RR, respiratory rate; SD, standard deviation.