Table 2 Comparison between patients with success of noninvasive positive pressure ventilation and patients with noninvasive positive pressure ventilation failure

Sedoanalgesia^b

6(29%)

35(59%)

Age^c, years

65.00(53.00–78.00)

74.00(60.00–82.00)

Male^b

11 (52%)

44 (75%)

APACHEII at ICU admission^a

18.57 ± 5.31

18.61 ± 7.14

APACHEII before extubation^a

10.86 ± 4.78

10.76 ± 4.58

NIPPV before mechanical ventilation^b

7(33%)

15(25%)

Diagnosis

Pneumonia^b

13(62%)

36(61%)

AECOPD^b

6(29%)

19(32%)

Other^b

2(10%)

4(7%)

 Oral-nasal mask^b

18(86%)

54(92%)

 Nasal mask^b

3(14%)

5(8%)

 OI^a

255.23 ± 61.49

241.54 ± 74.89

 pH^a

7.44 ± 0.02

7.43 ± 0.04

 PaCO₂ ^a, mmHg

46.54 ± 11.03

49.75 ± 10.82

 Body temperature^a

36.80 ± 0.45

36.83 ± 0.48

 SBP^a, mmHg

137.29 ± 19.73

139.17 ± 21.10

 DBP^a, mmHg

71.81 ± 11.66

74.75 ± 11.97

 RR^a, bpm

21.43 ± 5.56

21.63 ± 5.60

 HR^a, bpm

103.10 ± 15.39

103.68 ± 17.37

 OI^a

210.00 ± 62.18

259.80 ± 273.49

 pH^a

7.42 ± 0.06

7.44 ± 0.04

 PaCO₂ ^a, mmHg

51.22 ± 13.61

50.27 ± 12.43

 IPAPmax^a, cmH₂O,

12.81 ± 2.56

12.90 ± 2.40

 EPAPmax^a, cmH₂O,

5.71 ± 1.27

5.42 ± 0.97

 -2 to 0 point^b

3(14%)

15(22%)

 1 to 2 point^b

18(86%)

44(78%)