[Analysis of nasal airway resistance in 421 normal adults].
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.
Li
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First Affiliated Hospital, Bethune University of Medical Sciences, Changchun.
D000328:Adult; D000367:Age Factors; D000368:Aged; D000369:Aged, 80 and over; D000403:Airway Resistance / Q000502:physiology*; D005260:Female; D006801:Humans; D008297:Male; D008365:Manometry; D008875:Middle Aged; D009296:Nasal Cavity / Q000502:physiology*; D010507:Periodicity; D012016:Reference Values