Peak nasal inspiratory flow. Normal range in adult population. Rhinology

Department of Otolaryngology, Head and Neck Surgery, University of Padua, Padua, Italy.
Rhinology (Impact Factor: 3.76). 04/2006; 44(1):32-5.
Source: PubMed


Measurement of Peak Nasal Inspiratory Flow (PNIF) seems to be a cheap, simple, easily performed method to assess nasal patency. The purpose of this study is to establish normative PNIF data for a healthy adult population and provide charts relating PNIF normal values with age, height and sex in adults.
Repeated measurements of PNIF were performed in 170 volunteers. In total, 137 of these fulfilled the study criteria (66 females and 50 males) and all of them were non-smokers, non-asthmatic, without nose and paranasal sinuses problems, with ages ranging from 16 to 84 years. Data were statistically analysed and tables were produced relating PNIF to age, sex and height. There was no interaction of sex with age or height. There was considerable residual variability of PNIF between individuals not explained by any of the variables studied.
We conclude that PNIF could be a useful method to study nasal patency in both primary and secondary care to aid diagnosis of nasal disease. The study provides normative data for a Caucasian population. Further variables need to be explored to predict expected PNIF values more accurately.

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    • "Subjects had their PNIF measured preallergen exposure and then at multiple time points postallergen challenge. As PNIF values appear to be related to procedure practice (Ottaviano et al. 2006), the subjects were asked to first perform two training tests with the PNIF device prior to allergen exposure. After allergen exposure, three consecutive PNIF measurements were performed and recorded at each time point; the recorded value at a given time point corresponds to the mean value of these three measurements. "
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