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Josef Elidan, MD; Mara Shochina, MD; Benjamin Gonen, MSc; Issac Gay, MD

Arch Otolaryngol Head Neck Surg. 1990;116(8):910-913.

Abstract
• Simultaneous recording of the electromyographic activity of the pharyngeal muscles and the intraluminal pressure in the upper sphincter zone was performed routinely in patients with swallowing problems for the first time, to our knowledge. This technique was found to be very useful for the localization of the "site of lesion." The procedure is safe, easy to master, and causes minimal inconvenience. It can reveal, in the most direct way, whether the disturbance is in the hypopharyngeal musculature (represented by the inferior constrictor muscle), in the cricopharyngeal muscle (spasm or lack of relaxation), or in the synchronization between them. Simultaneous recording of intraluminal pressure adds valuable information about the mechanical events associated with electromyographic activity. It was found that in pathologic cases there is quite often no correlation between the electrical and mechanical events. Thus, simultaneous recording of both electrical and mechanical events is essential for the understanding of the pathophysiology of disturbances of deglutition.

(Arch Otolaryngol Head Neck Surg. 1990;116:910-913)

Author Affiliations
From the Departments of Otolaryngology (Drs Elidan and Gay) and Rehabilitation Medicine (Dr Shochina and Mr Gonen), Madassah University Hospital, Jerusalem, Israel.

Footnotes
Accepted for publication May 30, 1990.

Reprint requests to Department of Otolaryngology, Madassah University Hospital, PO Box 12000, Jerusalem 91120, Israel (Dr Elidan).

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