Nose air-flow-rate measurements by means of nose and sinus manometry

A time-dependent gauge-pressure expression for air flow in the nasal cavity is derived by means Bernoulli's equations and is used for comparison to digital manometry data. With the help of direct digital manometry, in fact, the airflow rate through each nasal 'key point' can be measured section by section. In particular, we investigate the time evolution of the gauge pressure in the vestibulum nasi, comparing normal and abnormal subjects data. It is shown that pulmonary respiration dynamics can be indirectly inferred from these data.