Efficiency of aerosol bronchodilator delivery during continuous high-flow system at different CPAP and flow levels. Efficiency of aerosol bronchodilator delivery during continuous high-flow system at different CPAP and flow levels. A: 30 L/min; B: 60 L/min; C: 90 L/min. In all CPAP/flow combinations, the configuration with the nebulizer placed proximal to the catheter mount with CPAP delivered through a high-flow generator delivered higher amounts of salbutamol than the configuration with the nebulizer placed distal to the catheter mount with CPAP delivered through a high-flow generator. P < .001 in all cases. Lorenzo Ball et al. Respir Care 2016;61:263-268 (c) 2012 by Daedalus Enterprises, Inc.