Abstract
Despite a significant number of devices for rhinomanometric studies, the problem of accurate and adequate data collection remains unsolved. It is caused by the fact that the existing devices for rhinomanometry in the schemes of differential pressure measurement do not fully take into account the aerodynamic features. Using the laws of classical aerodynamics, the paper first proposes the differential pressure measurement scheme, which eliminates additional pressure loss in the area of measurement. The differential pressure is measured between the nasopharynx and the under-the-mask space, namely at the point of zero air flow The technology of rhinomanometer and corresponding software have been developed. The rhinomanometer allows an objective analysis of nasal breathing using the active rhinomanometry method. The device has been clinically tested in the scientific and practical ENT center. In clinical practice the developed device provides increased accuracy of differential diagnosis with upper respiratory tracts obstruction
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