Timing in the Normal Pharyngeal Swallow: Prospective Selection and Evaluation of 16 Normal Asymptomatic Patients

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A review of timing of pharyngeal events with radiography has been made. A prospective selection of normal asymptomatic patients presenting for a gastrointestinal evaluation was made and timing of 55 events in the videorecorded pharyngeal swallow in these patients was performed. Only 16 normal asymptomatic patients as defined for selection were found amoung 870 patients presenting for gastroesophageal examination. A detailed description of their timing observations is presented. The timing data were used to temporally1 order events in the pharyngeal swallow. This ordering of events in the pharyngeal swallow and the data upon which it is based are reported here in detail.

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