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Related Experiment Videos

Acoustic rhinometry: do we need a standardized operating procedure?

A Tomkinson1, R Eccles

  • 1Common Cold & Nasal Research Centre, School of Molecular & Medical Biosciences, University of Wales College of Cardiff, UK.

Clinical Otolaryngology and Allied Sciences
|June 1, 1996
PubMed
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A standardized operating procedure for acoustic rhinometry is essential for accurate nasal measurements. Multiple readings ensure reliable data, as single measurements can be less precise than nasal decongestant effects.

Area of Science:

  • Otolaryngology
  • Medical instrumentation
  • Respiratory physiology

Background:

  • Acoustic rhinometry (AR) is a non-invasive technique to assess nasal cavity dimensions.
  • Standardized protocols are crucial for the reliability and reproducibility of AR measurements.
  • Variability in nasal airflow and geometry can affect measurement accuracy.

Purpose of the Study:

  • To evaluate the effectiveness of a standardized operating procedure (SOP) for acoustic rhinometry.
  • To determine the necessity of multiple readings for obtaining valid nasal measurements.
  • To compare measurement variability with the effects of a topical nasal decongestant.

Main Methods:

  • A study was conducted on 51 healthy volunteers.
  • Nasal measurements were performed using acoustic rhinometry before and after applying a topical nasal decongestant.

Related Experiment Videos

  • The SOP involved taking three consecutive readings, accepting the mean only if the coefficient of variation (CV) was less than 20%.

    • Main Results:

    • Out of 192 nasal cavities, 22 (11.5%) required more than three readings to meet the CV < 20% criterion.
    • The error from a single acoustic rhinometry reading can exceed the changes induced by nasal decongestants.
    • The proposed SOP demonstrated its utility in ensuring measurement validity.

    Conclusions:

    • A standardized operating procedure with multiple readings is vital for accurate acoustic rhinometry.
    • Relying on single measurements can lead to significant errors, potentially masking physiological changes.
    • Implementing this SOP enhances the reliability of nasal dimension assessments.