Airflow In Paranasal Sinuses | Biomed Grid

The function of paranasal sinuses has been investigated by considering a time-dependent gauge-pressure expression for airflow in the nose. Depending on the type of inhalation pattern by the same individual, it is shown that air flowing through the nasal cavity determines a more or less effective translation of the molecules of air coming from the paranasal sinuses.A functional manometric survey of the middle meatus was carried out on a homogeneous group of 50 Caucasian individuals. The nose & sinus manometer MG1 performed the manometry. This device allowed us to record two pressure peak values in two different close nose-sinus places at the same time: the maxillary ostium (point 2) and a nasal point close to the maxillary ostium (point 1). A steel probe with two endings was built on for this specific purpose. We called “differential pressure” the algebraically difference between these two values. Venturi effect has been considered as a modulator of nose and sinus airflow. Venturi effect acts in such a way that a non-turbulent flow can be maintained even for deep breath. Furthermore, the function of paranasal sinuses as thermal regulators is highlighted.