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The nasal cycle after laryngectomy.

T E Havas, P Cole, P J Gullane

    Acta Oto-Laryngologica
    |January 1, 1987
    PubMed
    Summary
    This summary is machine-generated.

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    Nasal airflow cycles were studied in adults. The cycle was absent in patients post-laryngectomy and temporarily ceased with altered airflow, indicating it does not depend on laryngeal nerves.

    Area of Science:

    • Otolaryngology
    • Respiratory Physiology

    Background:

    • The nasal cycle, an alternating pattern of nasal airflow, is a known physiological phenomenon.
    • Its relationship with laryngeal function and airflow diversion is not fully understood.

    Purpose of the Study:

    • To investigate the nasal cycle in adults.
    • To determine the impact of laryngectomy and supraglottic airflow diversion on the nasal cycle.
    • To assess the role of superior laryngeal innervation in nasal cyclic activity.

    Main Methods:

    • Studied 15 adult subjects, including controls and patients with varying degrees of laryngectomy or airflow diversion.
    • Monitored nasal airflow cyclic activity by measuring condensation areas on a Gertner-Podoshin plate at 15-minute intervals over 6-8 hours.

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    Main Results:

    • Nasal cyclic activity was present in control subjects.
    • The nasal cycle was absent in patients 1-3 years post-laryngectomy and in patients 3 weeks after surgery.
    • Temporary airflow diversion led to temporary cessation of the cycle, which resumed upon airway restoration.

    Conclusions:

    • Chronic absence of supraglottic airflow leads to cessation of the nasal cycle.
    • The nasal cycle is temporarily affected by acute absence or diversion of airflow.
    • The nasal cycle's presence is independent of superior laryngeal nerve innervation.