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UES opening occurs following cricopharyngeus deactivation and submental muscle contraction causing hyolaryngeal elevation and UES distraction. During impedance manometry, the inverse of impedance (admittance) can be used to measure bolus presence and infer UES opening. We hypothesized that the temporal relationship between UES relaxation, opening and hyolaryngeal elevation would change with increasing...
Objectives/HypothesisHigh‐resolution manometry (HRM) improves on previous manometric systems by including a greater number of sensors that are more densely placed. Due to deglutitive movement of the HRM catheter and upper esophageal sphincter (UES), it is unclear which HRM sensors capture pressure in the UES. To address this issue, we present two complementary studies to describe UES pressure patterns...
The tongue-hold maneuver is a widely used clinical technique designed to increase posterior pharyngeal wall movement in individuals with dysphagia. It is hypothesized that the tongue-hold maneuver results in increased contraction of the superior pharyngeal constrictor. However, an electromyographic study of the pharynx and tongue during the tongue-hold is still needed to understand whether and how...
Dysphagia is commonly associated with aging and Parkinson disease and can have a significant impact on a person’s quality of life. In some cases, dysphagia may be life-threatening. Animal models may be used to study underlying mechanisms of dysphagia, but paradigms that allow adequate imaging of the swallow in combination with measurement of physiological variables have not been forthcoming. To begin...
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