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Related Experiment Video

Updated: Jul 16, 2026

Standardized Measurement of Nasal Membrane Transepithelial Potential Difference (NPD)

Standardized Measurement of Nasal Membrane Transepithelial Potential Difference (NPD)

Published on: September 13, 2018

Effects of temperature changes on nasal patency.

R Yogeetha¹, R Raman, K F Quek

¹Department of Otorhinolaryngology, University of Malaya Medical Centre, Jalan Pantai, Kuala Lumpur 50603, Malaysia.

Singapore Medical Journal

|March 27, 2007

Summary

Environmental temperature changes did not significantly alter nasal patency or resistance in objective measurements. Subjective assessments showed some correlation, but objective acoustic rhinometry results were not significantly different.

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Area of Science:

Environmental Medicine
Rhinology
Physiology

Background:

Nasal patency and resistance are crucial for respiratory health.
Environmental factors, such as temperature, may influence nasal airflow dynamics.
Understanding these effects is important for managing respiratory conditions.

Purpose of the Study:

To objectively and subjectively assess the impact of temperature variations on nasal patency and resistance.
To compare subjective and objective measurements of nasal airflow under different temperature conditions.

Main Methods:

A cross-sectional study involving 50 healthy subjects.
Nasal obstruction was assessed using a visual analogue scale questionnaire (subjective).
Nasal patency and resistance were measured using acoustic rhinometry (objective) in controlled temperature environments (30-33°C and 18-22°C).

Main Results:

Objective measurements indicated increased nasal resistance and decreased nasal patency in cooler air (18-22°C) compared to warmer air (30-33°C).
Subjective assessments showed a significant correlation with temperature changes (p=0.001).
Objective acoustic rhinometry did not reveal statistically significant differences in nasal patency or resistance between the two temperatures.

Conclusions:

Environmental temperature changes in tropical climates do not significantly affect nasal resistance and patency as measured by objective acoustic rhinometry.
While subjective perceptions of nasal obstruction correlate with temperature, objective measures do not support a significant physiological difference.