Table 5 Comparison between vital signs and arterial blood gases before and after treatment in patients receiving NIV

Heart rate (beats/minute)

95.96 ± 7.40

84.92 ± 6.42

<0.01*

Respiratory rate (breaths/minute)

28.88 ± 4.14

23.76 ± 3.58

<0.01*

Mean arterial blood pressure (mmHg)

92.42 ± 4.55

89.42 ± 3.91

<0.01*

PH

7.42 ± 0.03

7.43 ± 0.02

0.10

PaCO2 (mmHg)

35.03 ± 3.99

38.15 ± 3.72

<0.01*

PaO2/FiO2

190.38 ± 42.47

241.53 ± 49.43

<0.01*