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Related Experiment Videos

Nasal pH measurement: a reliable and repeatable parameter.

R J England1, J J Homer, L C Knight

  • 1Department of Otolaryngology/Head and Neck Surgery, Hull Royal Infirmary, UK.

Clinical Otolaryngology and Allied Sciences
|April 10, 1999
PubMed
Summary
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Nasal mucosal pH measurements are reliable and repeatable in a clinical setting. This objective parameter could be valuable for diagnosing nasal conditions, with higher pH noted in men.

Area of Science:

  • Otolaryngology
  • Rhinology
  • Medical Instrumentation

Background:

  • Nasal mucosal pH typically ranges from 5.5-6.5, but can increase to 7.2-8.3 during rhinitis.
  • Despite known pH variations, nasal mucosal pH is not widely used as an objective clinical parameter.
  • The clinical utility of nasal pH measurements remains underexplored.

Purpose of the Study:

  • To evaluate the repeatability of nasal mucosal pH measurements in a clinical environment.
  • To determine if nasal pH can serve as a reliable objective clinical parameter.

Main Methods:

  • Fifty-four asymptomatic adults were prospectively enrolled.
  • Nasal mucosal pH was measured using a semi-disposable antimony pH catheter in four nasal areas.
  • Each measurement was repeated three times, with patient demographics and nasal characteristics recorded.

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Main Results:

  • Reliable and repeatable nasal mucosal pH values were obtained (Spearman-Brown R = 0.84).
  • No significant differences in pH were found between septal and turbinate mucosa.
  • Nasal mucosal pH was significantly higher in men than in women (P < 0.05).

Conclusions:

  • Repeatable nasal mucosal pH measurements are feasible in a clinical setting.
  • Nasal pH shows potential as an objective diagnostic parameter.
  • Sex is a factor influencing nasal mucosal pH, with men exhibiting higher values.