Table 4.
Variables related to noninvasive positive pressure ventilation success (i.e. avoidance of invasive mechanical ventilation).
| Values | Univariate test p value |
Multivariate logistic regression |
|||
|---|---|---|---|---|---|
| β | Odds ratio (CI 95%) | p value | |||
| ΔPaCO2, cmH2O | −13.12 ± 16.78 | 0.032* | 0.873 | 0.13 (0.77–0.99) | 0.03† |
| ΔPaO2/FiO2 ratio | 36.5 ± 126.3 | 0.713 | – | – | – |
| Δf, breaths/min | −11 ± 7 | 0.676 | – | – | – |
| ΔHR, beats/min | −15 ± 17 | 0.113 | – | – | – |
| NIPPV intolerance | No | 0.001* | 0.007 | 0.99 (0.00–0.40) | 0.01† |
| Home oxygen therapy | Yes | 0.357 | – | – | – |
| FEV1% | 33 ± 13 | 0.588 | – | – | – |
Values presented as mean ± SD or categorically defined. Definition of abbreviations: Δ, values after 1 h of NIPPV minus values at the beginning; PaCO2, arterial partial pressure of carbon dioxide; PaO2/FiO2 ratio, arterial partial pressure of oxygen/fraction of inspired oxygen rate variation.
*
p < 0.1.
†
p < 0.05.