The Relationship between Upper Esophageal Sphincter Manometry Function and Esophageal Motility Disorders

Area of Science:

• Gastroenterology
• Physiology
• Medical Imaging

Background:

• High-Aresolution manometry (HRM) is a diagnostic tool for esophageal motility disorders.
• Upper esophageal sphincter (UES) dysfunction is not currently integrated into the Chicago Classification system for esophageal motility disorders.
• Previous versions of the Chicago Classification have introduced controversy regarding the acceptable degree of esophageal dysfunction.

Purpose of the Study:

• To investigate the relationship between upper esophageal sphincter (UES) measures and overall esophageal function.
• To determine if UES dysfunction is associated with the degree of esophageal dysmotility.
• To explore the clinical significance of UES measures in the context of esophageal motility disorders.

Main Methods:

• A cross-sectional study was conducted at a referral center.
• High-resolution manometry (HRM) data from 2114 patients were analyzed.
• Patients were stratified into three groups based on the number of failed swallows, as defined by different iterations of the Chicago Classification.

Main Results:

• Significant increases in UES mean basal pressure, mean residual pressure, relaxation duration, and recovery time were observed across patient groups with increasing numbers of failed swallows.
• Positive correlations were found between the number of failed swallows and UES mean basal pressure, mean residual pressure, relaxation duration, and recovery time.
• These findings indicate a quantitative relationship between esophageal dysfunction and UES functional parameters.

Conclusions:

• Distinct differences in UES measures are present in patients experiencing failed swallows.
• A positive correlation exists between UES dysfunction and the severity of esophageal dysmotility.
• The study demonstrates that UES measures are intrinsically linked to esophageal function, even in cases of minor esophageal dysfunction.