UDC 532.5.013.12, 616-073.175:616-073.178




Chmovzh V.V., Head of the Aerodynamics Department,

Nechyporenko A.S., Associate Professor of Biomedical Engineering Department,

Garyuk O.G., Associate Professor of Otolaryngology and Pediatric Otolaryngology Department

National Aerospace University 

National University of Radio Electronics

Kharkiv Medical Academy of Postgraduate Education

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Abstract. The purpose of the paper is the development of system approach to finding hydrodynamic resistance coefficient of nasal cavity, which takes into account the regimes of flow through nasal cavity and also specific anatomico-physiological features of a person’s nasal cavity. The physics of the phenomenon causing formation of airflow in a nasal cavity at breathing is considered. The actuality of theoretical and practical researches of flow regime is shown. The analysis of existing methods of nasal breathing assessment is carried out. The new methodology of receiving hydrodynamic resistance coefficient of a nasal cavity, differing from existing by lack of dimension is offered. The dimensionless coefficient of hydrodynamic resistance doesn’t depend on individual geometric sizes of a person’s nasal cavity. It takes into account laminar, transition and turbulent regimes of flow. The classification of unilateral nasal obstruction independently from race differences of patients was obtained. Calculations of critical airflow rate and critical Reynolds number are proposed. Value of critical airflow rate allows splitting breathing cycle on 6 phases with identification of automodel zone. The 6-Phase Rhinomanometry is an extension of a 4-Phase Rhinomanometry. The separation on phases happens considering the structure of airflow that is directly connected with the performance of physiological functions. It allows investigation physiology of nasal breathing. Automodel zone of turbulent regime of flow as a marker of norm breathing will be investigated in further works. Also, future research will be connected with assessing a work of nose for different regimes of exploitation: calm breathing, breathing during physical exertion, investigation of nasal cycles.


  1. Dykewicz, M., Fineman, S., Skoner, D., Nicklas, R., Lee, R., Blessing-Moore, J., Li, J., Bernstein, I., Berger, W., Spector, S., Schuller, D. Diagnosis and management of rhinitis: Complete guidelines of the Joint Task Force on practice parameters in allergy, asthma and immunology. Ann Allergy Asthma Immunol, 81, (1998): 478–518
  2. Wheeler, P, Wheeler, S., Vasomotor rhinitis. Am. Fam. Physician 72(6), (2005): 1057–62
  3. Stoksted, P., Nielsen, J. Z. Rhinomanometric measurements of the nasal passage. Acta Otolaryngology, suppl, 140, (1958): 236-240.
  4. Kumlien, J., Schiratzki, H. Methodological aspects of rhinomanometry. Rhinology, 17(2), (1979): 107–114.
  5. Thulesius, H. L. Rhinomanometry in clinical use. A tool in the septoplasty decision making process. Ph.D. thesis, Department of Otorhinolaryngology, Head and Neck Surgery, Clinical Sciences, Lund University Sweden, 2012.
  6. Demirbas, D., Cingi, C., Cakli, H., Kaya, E. Use of rhinomanometry in common rhinologic disorders. Expert Rev. Med. Devices, 8(6), (2011): 769–777.
  7. Malm, L., v. Wijk, R. G., Bachert, C. Guidelines for nasal provocations with aspects on nasal patency, airflow, and airflow resistance. International Committee on Objective Assessment of the Nasal Airways, International Rhinologic Society. Rhinology, 38(1), (2000): 1-6.
  8. Vogt, K., Jalowayski, A. A., Althaus, W., Cao, C., Han, D., Hasse, W., Hoffrichter, H., Mosges, R., Pallanch, J., ShahHosseini, K., Peksis, K., Wernecke, K. D., Zhang, L., Zaporoshenko, P. 4-Phase- Rhinomanometry (4PR) – basics and practice. Rhinology Suppl., 21, (2010): 1-50.
  9. Garyuk, O. G. Rhinomanometry. Report 2: Current state and prospects. Rynologiya, 3, (2013): 32-45.
  10. Kern, E. B. Committee report on standardization of rhinomanometry. Rhinology, 19(4), (1981): 231-236.
  11. Clement, P. A. Committee report on standardization of rhinomanometry. Rhinology, 22(3), (1984): 151-155.
  12. Sipilä, J., Suonpää, J., Laippala, P. Evaluation of nasal resistance data in active anterior rhinomanometry with special reference to clinical use fulness and test-retest analysis. Clin Otolaryngol Allied Sci, 17(2), (1992): 170-177.
  13. Eichler, J. Power-Curves in Rhinomanometry Leistungskurven in der Rhinomanometrie. Biomedizinische Technik, 34, (1989): 42-45.
  14. Chometon, F., Gillieron, P., Laurent, J. et al. Aerodynamics of nasal airways with application to obstruction. Proceedings of the 6th Triennial International Symposium on Fluid Control, Measurement and Visualization, (2000): 65–71.
  15. Rohrer, F. The flow resistance in the human respiratory tract. European Journal of Physiology, 162, (1915): 225-295.
  16. Naito, K., Mamiya, T., Mishima, Y., Kondo, Y., Miyata, S., Iwata, S. Comparison of calculated nasal resistance from Rohrer’s equation with measured resistance at delta P 150Pa. Rhinology, 36(1), (1998): 28-31.
  17. Solow, B., Sandham, A. Nasal airflow characteristics in a normal sample. European Journal of Orthodontics, 13(1), (1991): 1-6.
  18. Mlynski, G., Beule, A. Diagnosis of respiratory function of the nose. Diagnostik der respiratorischen Funktion der Nase. HNO. Springer medizin verlag, 56(1), (2008): 81-99.
  19. Bayev, B. S., Chmovzh, V. V. Hydraulics and hydraulic systems of aircrafts. Tutorial, Kharkiv, National Aerospace University “Kharkiv Aviation Institute, 73 – 75, 2001.
  20. Nechyporenko, A. S. Technical aspects of rhinomanometry. Eastern-European Journal of Enterprise Technologies, 4/9(64), (2013): 11-14.
  21. Nechyporenko, A. S., Garyuk, O.G., Chmovzh, V. V., Kasyanenko, O. B. (2015) Patent № 107854, Ukraine. The method of measuring differential pressure for the assessment of nasal breathing, http://base.uipv.org/searchINV/search.php?action=viewdetails &IdClaim=209519&chapter=description.
  22. Nechyporenko, A. S., Garyuk, O.G., Chmovzh, V. V., Kasyanenko, O. B. (2015) Patent № 107855, Ukaine. The method of objective evaluation of nasal breathing. http://base.uipv.org/searchINV/search.php?action=viewdetails &IdClaim=209520&chapter=description.
  23. Khelimskaya, I. V. Methodical aspects of exhaled air temperature measurement for the purpose of early diagnostics of chronic obstructive lung diseases. Far Eastern Journal of Medical, 4, (2010): 18-20.
  24. Khelimskaya, I. V. The specific features of the development and prevalence of bronchopulmonary diseases in Far Eastern railway workers. Profilakticheskaya Meditsina Journal, n. 3, (2011): 58-60.