[Rhinoresistometry--a further development of rhinomanometry]

The methods of rhinological diagnostics available today are not sufficient for every functional aspect in modern therapeutic strategies. We developed active anterior rhinomanometry to rhinoresistometry, in order to improve diagnostic methods. We created a new software for calculation and graphic presentation. The program shows nasal resistance in relation to airflow. It is also possible to see whether the nasal airflow is laminar or turbulent depending from the degree of flow. Rhinoresistometry can measure the hydraulic diameter as a suitable value for nasal patency in nasal airflow and lambda as a parameter for the degree of turbulences. The method allows new views into the physiology and pathophysiology of nasal breathing and has been applied successfully in clinical practice.