Table 4.

The Relationship Between Roux-en-Y Gastric Bypass and Esophageal Disease

Study	Pathology	Evaluation	Findings
Merrouche et al61	Esophageal dyskinesia	Symptom scoring, endoscopy, manometry, 24-hour pH monitoring	No esophageal dyskinesia
Peterli et al88	GERD	Symptom reporting	Reduced GERD
Madalosso et al107	GERD	Symptom reporting, pH monitoring	Reduced GERD
Cassao et al111	Esophageal sphincter pressure	High-resolution manometry	Increased LES hypotonia
Valezi et al112	LES pressure	High-resolution manometry	Increased LES hypotonia
Clements et al113	Dysphagia	Symptom scoring	Reduced GERD, worsening of dysphagia
Foster et al114	Dysphagia	Symptom scoring	Reduced GERD, no change in dysphagia

GERD, gastroesophageal reflux disease; LES, lower esophageal sphincter.