High-Flow Nasal Cannula versus Noninvasive Ventilation in AECOPD Patients with Respiratory Acidosis: A Retrospective Propensity Score-Matched Study

Table 3

Ventilation settings of HFNC and NIV.

	HFNC group (n = 44)	NIV group (n = 44)	value
Flow rate (L/min)	48.3 ± 8.6	—	—
IPAP ((cm) H2O)	—	19.0 ± 3.2	—
EPAP ((cm) H2O)	—	6.3 ± 1.8	—
FIO2 (%)	39.9 ± 0.2	40.7 ± 0.1	0.796

Data are presented as mean ± standard deviation. EPAP, expiratory positive airway pressure; IPAP, inspiratory positive airway pressure.