抄録
Nasal continuous positive airway pressure (Nasal-CPAP) is frequently used in the care for the preterm neonates to recruit its sustain and maintain the lung volume. The authors have developed Nasal-CPAP device with a bypath (B-NCPAP) of horizontal mounting type which reduces the breathing work for the neonates. In the last report, we have obtained device properties of B-NCPAP with prong for the several diameters. As the results, it was shown that pressure decreased at the expiration. In this report, we added HFO function to the calculation model of the B-CPAP device and report the numerical result, when CPAP pressure amplitude reduce during respiration phase.
