Research Article
Noninvasive Ventilation Weaning in Acute Hypercapnic Respiratory Failure due to COPD Exacerbation: A Real-Life Observational Study
Table 3
Hospital length of stay and NIV duration, NIV parameters, and presence of delirium.
| | | Completed Group () | Chronic NIV Group () | Failed Group () | value |
| | Hospital length of stay and NIV duration, median (IQR) | | | | | | Hospital length of stay, days | 10 (8–14) | 11 (10–14) | 11 (7–15) | 0.76 | | NIV duration, days | 4 (3–6) | 11 (10–14) | 2 (1–3) | <0.01 | | Number of days with 3 NIV sessions | 1 (1-2) | 1 (0–3) | 1 (0–3) | 0.96 | | Number of days with 2 NIV sessions | 1 (1-2) | 2 (1–9) | 0 (0-1) | <0.01 | | Number of days with 1 NIV session | 1 (1-2) | 4 (0–5) | 0 (0-1) | < 0.01 | | NIV parameters, median (IQR) | | | | | | Maximum IPAP (cm H2O) | 16 (14–19) | 21 (18–23) | 17 (15–19) | <0.01 | | Maximum EPAP (cm H2O) | 6 (5–7) | 8 (7-8) | 6 (5–7) | <0.01 | | IPAP (cm H2O) with domiciliary NIV | — | 19 (17–23) | — | — | | EPAP (cm H2O) with domiciliary NIV | — | 8 (5–8) | — | — |
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EPAP, expiratory positive airway pressure; IQR, interquartile range 25th–75th percentile; IPAP, inspiratory positive airway pressure; NIV, noninvasive ventilation.
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