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Peak nasal inspiratory flow and peak expiratory flow. Upright and sitting values in an adult population
Get PDFBackground: Nasal obstruction is correlated with a decreased quality of life . An easy way to evaluate nasal patency is the peak nasal inspiratory flow (PNIF) measurement. Normal PNIF values have been published by many authors. However, some authors evaluated volunteers in a sitting position, while others have measured PNIF values in standing volunteers.
Body position has been shown to influence pulmonary function, with differences between sitting and upright positions. As nasal and pulmonary flows are strictly related, the present pilot study tried to establish whether PNIF/PEF changed with body position in adults.
Methodology/Principal: PNIF and PEF were measured in sitting and standing positions with the order of testing randomized in 76 healthy volunteers, 30 male (40 ±16 years).
Results: In the group as a whole between sitting and upright position, PEF was significantly different (p=0.009), while PNIF showed a trend towards a significant difference (p=0.10).
Conclusions: The present study, although showing a generally positive effect of the standing position on PEF values, does not show a clear effect on PNIF
UNILATERAL PEAK NASAL INSPIRATORY FLOW. NORMAL VALUES IN ADULT POPULATION
No full textSUMMARY
Aims: Measurement of Peak Nasal Inspiratory Flow (PNIF) is a cheap, simple, easily performed method to assess nasal patency and
it is suitable for serial measurements and for home use. The purpose of this study was to establish normative unilateral PNIF data
for a healthy adult population and provide charts relating unilateral PNIF normal values with various explanatory variables.
Methods and results: Repeated measurements of PNIF and unilateral PNIF were performed in 109 volunteers. Ninety seven of
these ful!lled the study criteria and all of them were non-smokers, non-asthmatic, without nose and paranasal sinus problems,
with ages ranging from 13 to 80 years. Data were statistically analysed and tables were produced relating unilateral PNIF to height
which was the only studied variable that correlated statistically with unilateral PNIF.
Conclusions: The measurement of unilateral PNIF, providing the present data are con!rmed in a larger series, could be a useful
method to study single nostril patency to aid diagnosis of nasal disease, especially when it is necessary to assess the functional
e"ects of unilateral nasal septal deviations or in all cases where there is a suspicion of a unilateral nasal occlusion. This pilot study
provides initial normative unilateral PNIF data
EUFOREA Comment on a Misleading Allergic Rhinitis Report [Letter]
No full textGlenis K Scadding,1,* Peter K Smith,2,* Peter W Hellings3,4,* 1Department of Allergy & Rhinology, Royal National ENT Hospital; Division of Immunity and Infection, University College, London, UK; 2Griffith University, School of Medicine, Southport, Queensland, 4215, Australia; 3Department of Otorhinolaryngology-Head and Neck Surgery, University Hospitals, Leuven, Belgium; 4Upper Airways Research Laboratory, Department of Head and Skin, Ghent University, Ghent, Belgium*These authors contributed equally to this workCorrespondence: Glenis K Scadding, Royal National ENT Hospital, 6 Huntley Street, London, W1E 6DG, UK, Tel +442087236045, Email [email protected]
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