The methods of rhinological diagnostics available today are not suffic
ient for every functional aspect in modern therapeutic strategies. We
developed active anterior rhinomanometry to rhinoresistometry, in orde
r to improve diagnostic methods. We created a new software for calcula
tion and graphic presentation. The programm shows nasal resistance in
relation to airflow. It is also possible to see the nasal airflow is l
aminar or turbulent depending from the degree of flow. Rhinoresistomet
ry can measure the hydraulic diameter as a suitable value for nasal pa
tency in nasal airflow and lambda as a parameter for the degree of tur
bulences. The method allows new views into the physiology and pathophy
siology of nasal breathing and has been applied successfully in clinic
al practice.