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1.  A Prospective Population-based Study of Total Nasal Resistance in Korean Subjects 
Objectives
Rhinomanometry is a widely accepted method for objective assessment of nasal patency. However, few studies have reported the values of otherwise healthy population for nasal resistance in East Asians. The purpose of this study was to measure normal total nasal resistance (TNR) values in a large sample of Korean adults and to reveal parameters contributing to TNR values.
Methods
Subjects were enrolled from a cohort of the Korean Genome and Epidemiology Study. They were evaluated by anthropometry, questionnaire, and active anterior rhinomanometry at transnasal pressures of 100 and 150 Pascal (Pa).
Results
The study sample consisted of 2,538 healthy subjects (1,298 women and 1,240 men) aged 20 to 80 years. Normal reference TNR values were 0.19±0.08 Pa/cm3/second at 100 Pa and 0.22±0.09 Pa/cm3/second at 150 Pa. The TNR of women was significantly higher than that of men (P<0.0001). TNR decreased with increasing age in both genders (P<0.05). In women, lower body weight was related to increasing TNR. In men, current smokers had higher TNR than ex-smokers and never smokers.
Conclusion
The results of the present study provide information regarding the values of otherwise healthy population of TNR and parameters associated with TNR in Korean adults.
doi:10.3342/ceo.2012.5.1.39
PMCID: PMC3314804  PMID: 22468201
Adult; Body weight; Nasal obstruction; Reference values; Rhinomanometry; Smoking

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