Additionally, research has explored the broader implications of botulinum toxin injections for upper esophageal sphincter (UES) dysfunction, which can significantly impact patients' quality of life.

Another study aimed to establish a methodology for diagnosing upper esophageal sphincter (UES) and pharyngeal motor disorders using HRM. The researchers compared 509 patients with controls and ...

retrograde cricopharyngeal dysfunction (R-CPD), also known as "no burp syndrome." The cricopharyngeus is the main muscle of the upper esophageal sphincter, the top gate of the food pipe.

retrograde cricopharyngeal dysfunction (R-CPD), also known as “no burp syndrome.” The cricopharyngeus is the main muscle of the upper esophageal sphincter, the top gate of the food pipe.

ACCORDING to Templeton and Kredel, 1 "The ericopharyngeus muscle is a true sphincter which can be easily demonstrated at Roentgenologic examination. When the Valsalva test is performed ...

GERD affects the lower sphincter (muscular ring) in the esophagus, and LPR affects the upper esophageal sphincter. LPR is ...