Table 2.
Comparison between patients with success of noninvasive positive pressure ventilation and patients with noninvasive positive pressure ventilation failure
| Failure NIPPV (N = 21) |
Successful NIPPV (N = 59) | P | |
|---|---|---|---|
| Sedoanalgesiab | 6(29%) | 35(59%) | 0.015 |
| Agec, years | 65.00(53.00–78.00) | 74.00(60.00–82.00) | 0.148 |
| Maleb | 11 (52%) | 44 (75%) | 0.098 |
| APACHEII at ICU admissiona | 18.57 ± 5.31 | 18.61 ± 7.14 | 0.982 |
| APACHEII before extubationa | 10.86 ± 4.78 | 10.76 ± 4.58 | 0.936 |
| NIPPV before mechanical ventilationb | 7(33%) | 15(25%) | 0.486 |
| Diagnosis | |||
| Pneumoniab | 13(62%) | 36(61%) | 0.943 |
| AECOPDb | 6(29%) | 19(32%) | 0.758 |
| Otherb | 2(10%) | 4(7%) | 0.682 |
| Interface | 0.426 | ||
| Oral-nasal maskb | 18(86%) | 54(92%) | |
| Nasal maskb | 3(14%) | 5(8%) | |
| Before extubation | |||
| OIa | 255.23 ± 61.49 | 241.54 ± 74.89 | 0.455 |
| pHa | 7.44 ± 0.02 | 7.43 ± 0.04 | 0.365 |
| PaCO2 a, mmHg | 46.54 ± 11.03 | 49.75 ± 10.82 | 0.249 |
| Body temperaturea | 36.80 ± 0.45 | 36.83 ± 0.48 | 0.874 |
| SBPa, mmHg | 137.29 ± 19.73 | 139.17 ± 21.10 | 0.722 |
| DBPa, mmHg | 71.81 ± 11.66 | 74.75 ± 11.97 | 0.334 |
| RRa, bpm | 21.43 ± 5.56 | 21.63 ± 5.60 | 0.889 |
| HRa, bpm | 103.10 ± 15.39 | 103.68 ± 17.37 | 0.892 |
| Arterial blood gases half an hour after NIPPV initiated | |||
| OIa | 210.00 ± 62.18 | 259.80 ± 273.49 | 0.413 |
| pHa | 7.42 ± 0.06 | 7.44 ± 0.04 | 0.101 |
| PaCO2 a, mmHg | 51.22 ± 13.61 | 50.27 ± 12.43 | 0.768 |
| IPAPmaxa, cmH2O, | 12.81 ± 2.56 | 12.90 ± 2.40 | 0.887 |
| EPAPmaxa, cmH2O, | 5.71 ± 1.27 | 5.42 ± 0.97 | 0.281 |
| RASS | 0.294 | ||
| -2 to 0 pointb | 3(14%) | 15(22%) | |
| 1 to 2 pointb | 18(86%) | 44(78%) | |
AECOPD acute exacerbation of chronic obstructive pulmonary disease, APACHE II The Acute Physiologic and Chronic Health Evaluation, DBP diastolic blood pressure, EPAP expiratory positive airway pressure, HR heart rate, ICU LOS length APACHE II The Acute Physiologic and Chronic Health Evaluation, DBP diastolic blood pressure, EPAP expiratory positive airway pressure, HR heart rate, ICU LOS length of intensive care unit stay, IPAP inspiratory positive airway pressure, IQR interquartile range, OI oxygenation index, RASS Richmond Agitation Sedation Scale, RR respiratory rate, SBP systolic blood pressure, SD standard deviation
aResults are expressed as mean ± SD
bResults are expressed as n(%)
cResults are expressed as median (IQR)