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[Analysis of nasal airway resistance in 421 normal adults]
X Li1
1First Affiliated Hospital, Bethune University of Medical Sciences, Changchun.
Zhonghua Er Bi Yan Hou Ke Za Zhi
|January 1, 1990
Abstract:
Nasal airway resistance in 421 normal adults were investigated via anterior rhinomanometry. It was found that the normal value of total NAR in normal adults ranged from 0.126-0.328kPa.s/L (1.29 to 3.35 cmH2O.s/L with normal fluctuations not more than 0.103kPa.s/L (1.05 cmH2O.s/L). The total NAR had a tendency to decrease with ageing, and showed no significant differences between male and female in different age groups (P greater than 0.05). Typical nasal cycles appeared in 80% of normal adults giving rise to alternative changes of bilateral NAR, but the total NAR remained in rather constant ranges.