The main objective of this study is to evaluate, in a prospective cohort, the link between preoperative contractile reserve of oesophagus evaluated by high resolution manometry (HRM) and the occurrence of post operative dysphagia after anti-reflux surgery.

Inclusion Criteria:

• Patient with an indication validated at a fundoplication directed by a visceral surgeon from Vienne county
• Patient sent for the realization of a preoperative HRM,
• Patient giving consent to participate in the study.

Exclusion Criteria:

• Patient unable to sign a consent or protected (minors, pregnant women, patient under guardianship),
• History of oesophageal surgery or radiotherapy,
• History of systemic pathology with oesophageal involvement,
• Contraindication to an oesophageal manometry : altered general status and vigilance , important swallowing disorders