HVNI vs NIPPV in Type 2 Respiratory Failure

Oxygen therapy will be given via the Vapotherm high velocity therapy (HVT) 2.0 (Vapotherm, Inc, Exeter, NH) using a small-bore cannula, with a flow rate of up to 45 L/min, starting temperature of 37oC and FiO2 of up to 1.0.

Ventilation will be performed with the Respironics Vision V60 (Philips Healthcare, Murrysville, PA) using an oronasal mask of appropriate size, with FiO2 (up to 1.0), inspiratory (IPAP 12 to 20 cmH2O) and expiratory (EPAP 5 to 10 cm H2O) pressures titrated to alleviate patient's respiratory distress.