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Related Experiment Videos

The cricopharyngeus revisited.

O Ekberg

    The British Journal of Radiology
    |September 1, 1986
    PubMed
    Summary

    Swallowing difficulties in patients with posterior cricopharyngeus impression stem from abnormal motor function in the pharyngo-oesophageal (PO) segment. Key issues include defective tonicity and peristalsis, impacting the cricopharyngeal muscle.

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    Area of Science:

    • Gastroenterology
    • Otolaryngology
    • Physiology

    Background:

    • Posterior cricopharyngeus impression is a condition affecting the upper esophagus.
    • Understanding the motor function of the pharyngo-oesophageal (PO) segment is crucial for diagnosing swallowing disorders.

    Purpose of the Study:

    • To evaluate the motor function (tonicity, relaxation, peristalsis) of the PO segment during swallowing in patients with posterior cricopharyngeus impression.
    • To identify the underlying causes of functional abnormalities observed in these patients.

    Main Methods:

    • Assessment of motor function in 25 patients with posterior cricopharyngeus impression.
    • Evaluation of tonicity, relaxation, and peristalsis during swallowing.
    • Barium swallow studies to observe the PO segment's response.

    Main Results:

    • Functional abnormalities were prevalent, with defective tonicity in 11 patients and abnormal peristalsis in 19.
    • Cricopharyngeal muscle relaxation was mostly normal, except at the muscle itself.
    • Barium retention proximal to the cricopharyngeus occurred in 11 patients due to pharyngeal constrictor weakness or abnormal peristaltic timing.

    Conclusions:

    • Posterior cricopharyngeus impression is associated with widespread motor dysfunction in the PO segment, not just cricopharyngeal bulging.
    • Impaired inferior pharyngeal constrictor function and asynchronous peristalsis contribute to swallowing difficulties.
    • The findings highlight the complex nature of motor abnormalities in the PO segment in these patients.

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