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Related Experiment Videos

Sequential clinical comparison between two commercially available rhinomanometers

P Borges Dinis1, J B Guerra, A Gomes

  • 1Department of Otorhinolaryngology, Hospital Pulido Valente, Lisbon, Portugal.

Acta Oto-Laryngologica
|July 1, 1994
PubMed
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Two rhinomanometers showed no correlation in nasal resistance measurements, indicating potential technical differences between devices. Patient preference and device-specific factors may influence results in assessing nasal obstruction.

Area of Science:

  • Otolaryngology
  • Medical Device Engineering
  • Respiratory Physiology

Background:

  • Chronic nasal obstruction affects quality of life.
  • Accurate nasal resistance measurement is crucial for diagnosis and treatment.
  • Various rhinomanometers exist, but their comparative performance is not fully understood.

Purpose of the Study:

  • To compare the performance of two custom-built rhinomanometers: Rhino-Comp and Rhinomanometer 200.
  • To assess nasal resistance measurements in treated and decongested states.
  • To evaluate patient preference for the examination procedures.

Main Methods:

  • Active anterior rhinomanometry was used in 53 patients with nasal obstruction complaints.
  • Two rhinomanometers (Rhino-Comp and Rhinomanometer 200) were used sequentially.

Related Experiment Videos

  • Paired statistical analysis compared results, including R150 values and Broms system V2 parameters.

    • Main Results:

    • No correlation was found between R150 results from the two devices.
    • A systematic difference (1.26-1.30 ratio) was observed, suggesting device-specific technicalities.
    • Expiratory curves showed correlation, but inspiratory curves did not.
    • Nose adaptors in Rhinomanometer 200 may artificially affect measurements.

    Conclusions:

    • Significant discrepancies exist between Rhino-Comp and Rhinomanometer 200 in measuring nasal resistance.
    • Technical specificities and occlusion methods may contribute to differing results.
    • Further investigation is needed to standardize rhinomanometry and understand patient preferences.