Nasal high flow (NHF) cannulae are used to deliver heated and humidified air to patients at steady flows ranging from 5-50 l/min.In this study, the flow velocities in the nasal cavity across the complete respiratory cycle during natural breathing and with NHF flow have been mapped in-vitro using time resolved stereoscopic particle image velocimetry (SPIV). 丹迪粒子图像测速仪 Dantec PIV
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