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[Postural rhinomanometry in normal subjects].

G Altissimi, C Simoncelli, L Gallucci

    Acta Otorhinolaryngologica Italica : Organo Ufficiale Della Societa Italiana Di Otorinolaringologia E Chirurgia Cervico-Facciale
    |November 1, 1989
    PubMed
    Summary
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    Measuring nasal air flow resistance changes with body position (decubitus) reveals vascular turbinate tissue reactivity. This study establishes normative values for these resistance variations, aiding future nasal vasomotor pathology research.

    Area of Science:

    • Rhinology and Otolaryngology
    • Cardiovascular Physiology

    Background:

    • Nasal resistance is influenced by vascular turbinate tissue reactivity.
    • Decubitus-induced changes in nasal airflow resistance can indicate this reactivity.
    • Previous methods often masked these variations with vasoconstrictors.

    Purpose of the Study:

    • To establish normative values for nasal resistance variations in different decubitus positions.
    • To provide reference data for future studies on nasal vasomotor pathologies.
    • To assess the impact of body positioning on nasal airflow resistance.

    Main Methods:

    • Anterior Active Rhinomanometry used on 80 nasal cavities from healthy subjects.
    • Measurements taken in seated, supine, and lateral (homolateral/contralateral) positions.

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  • Resistance variations expressed as a percentage of the seated basal value.

    • Main Results:

    • Nasal resistance increased on average in all decubitus positions due to elevated cephalic venous pressure.
    • The supine position with a 20-degree head-trunk angle showed the highest statistical significance and lowest data scattering.
    • Normative mean values and standard deviations for resistance variations were determined.

    Conclusions:

    • Decubitus-induced nasal resistance variations are a reliable indicator of vascular turbinate reactivity.
    • Normative data provides a baseline for diagnosing nasal vasomotor disorders.
    • The supine position with head elevation is optimal for assessing these variations.