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Table 3 Changes in hemodynamics, arterial blood gas values, and respiratory rates

From: Aggressive treatment with noninvasive ventilation for mild acute hypoxemic respiratory failure after cardiovascular surgery: Retrospective observational study

 

Group

Baseline

Within 1 h

Within 2 h

Within 6 h

Discontinuation of NIV or reintubation

Heart rate (bpm)

Successful

89 ± 15

87 ± 17

86 ± 15

86 ± 17

84 ± 15 *2

 

Reintubation

97 ± 19

96 ± 17

99 ± 12

95 ± 11

92 ± 10

Mean arterial blood

Successful

76 ± 15

77 ± 13

75 ± 13

77 ± 12

78 ± 11

pressure (mmHg)

Reintubation

77 ± 18

74 ± 8

74 ± 4

74 ± 8

74 ± 12

pH

Successful

7.44 ± 0.05

7.39 ± 0.17

7.44 ± 0.04

7.43 ± 0.12

7.45 ± 0.05

 

Reintubation

7.40 ± 0.13

7.44 ± 0.05

7.40 ± 0.16

7.45 ± 0.07

7.40 ± 0.15

PaO2/FIO2 (mmHg)

Successful

143 ± 44 †1

206 ± 79 *2, †1

218 ± 66 *2, †1

231 ± 72 *2, †2

244 ± 67 *2, †2

 

Reintubation

103 ± 28

134 ± 79

139 ± 96

129 ± 58

103 ± 41

PaCO2 (mmHg)

Successful

37 ± 5

37 ± 5

38 ± 5

38 ± 4

38 ± 5

 

Reintubation

45 ± 14

48 ± 22

47 ± 20

41 ± 4

48 ± 20

Respiratory rate

Successful

25 ± 6

23 ± 5 *2

22 ± 5 *2

21 ± 4 *2

22 ± 4 *2

(breaths/min)

Reintubation

25 ± 4

26 ± 6

26 ± 7

23 ± 10

23 ± 10

  1. Data are shown as the mean ± SD.
  2. NIV, noninvasive ventilation.
  3. *1 P < 0.05, *2 P < 0.01 vs. baseline.
  4. †1 P < 0.05, †2 P < 0.01 between the two groups.