| |
NPPV (n = 28)
|
IMV (n = 37)
|
PA
|
NPPV (n = 28)
|
IMV (n = 37)
|
PB
|
|---|
| |
First minute
| |
Final
| |
|---|
|
Respiratory rate (f), ipma
|
27.7 ± 5.7
|
30.05 ± 8.6
|
0.23
|
39.0 ± 2.8b
|
38.0 ± 3.1b
|
0.19
|
|
Tidal volume (VT), mL
|
389 ± 0.25
|
399 ± 0.28
|
0.51
|
278 ± 0.24b
|
268 ± 0.27b
|
0.46
|
|
f/VT
|
82.6 ± 45
|
87.6 ± 54.4
|
0.50
|
149.0 ± 67.9b
|
151.3 ± 58.4b
|
0.23
|
|
Heart rate, bpma
|
95.7 ± 13.6
|
101.4 ± 20.3
|
0.57
|
108.4 ± 12.6b
|
116.1 ± 14.4b
|
0.77
|
|
SpO2a
|
95.1 ± 1.92
|
96.6 ± 1.97
|
0.15
|
88.2 ± 2.4
|
87.3 ± 2.6
|
0.09
|
- Values are mean ± standard deviation. aValues at moment of failure or at 30 minutes; bP <0.05 (comparison between groups in the first and last minutes). bpm, beats per minute; ipm, incursions per minute; IMV, invasive mechanical ventilation; NPPV, noninvasive mechanical ventilation; PA, comparison between groups in the first minute (t test); PB, comparison between groups in the 30th minute (t test); SpO2, peripheral oxygen saturation.
