Table 3.
Physiological parameters before and after 1 h of NIPPV for 117 subjects.
| Group A (n = 96) |
Group B (n = 13) |
|||
|---|---|---|---|---|
| Pre | Post | Pre | Post | |
| f, breaths/min | 30 (16–54) | 20 (14–38)† | 34 (22–44) | 20 (13–32)* |
| HR, beats/min | 110 ± 20§ | 97 ± 15† | 125 ± 16 | 103 ± 15* |
| SpO2, % | 90 (54–100) | 97 (87–100)† | 87 (69–100) | 98 (92–100)* |
| FiO2, % | 36 (21–100) | 35 (21–80)† | 32 (21–100) | 35 (25–80) |
| MBP, mmHg | 97 (49–170) | 90 (51–143)* | 89 (57–159) | 99 (71–108) |
| ABG | ||||
| PaCO2, mmHg | 70.3 ± 23.6 | 55.1 ± 15.7† | 62.7 ± 21.0 | 52.72 ± 15.7 |
| HCO3, mm/L | 33.3 ± 9.1 | 30.9 ± 6.9† | 32.9 ± 7.7 | 30.6 ± 6.5 |
| pH | 7.30 ± 0.11 | 7.37 ± 0.08* | 7.34 ± 0.10 | 7.39 ± 0.08 |
| PaO2/FiO2 ratio | 184 (48–500) | 228 (114–355) | 179 (48–350) | 250 (74–420) |
Values are presented as mean ± SD or median (minimum–maximum). Definition of abbreviations: RR, respiratory rate; HR, heart rate; SpO2, oxygen saturation by pulse oximetry; FiO2, fraction of inspired oxygen; MBP, mean blood pressure; ABG, arterial-blood gases; PaCO2, arterial partial pressure of carbon dioxide; HCO3, bicarbonate; PaO2, arterial pressure of oxygen; PaO2/FiO2 ratio, arterial partial pressure of oxygen/fraction of inspired oxygen ratio.
*
p < 0.05 between start and after 1 h of NIPPV.
†
p < 0.001 between start and after 1 h of NIPPV.
§
p < 0.05 between groups at start.