BACKGROUND: Laparoscopic fundoplication (FP) reduces gastroesophageal reflux (GER) efficiently. Dysphagia is its main complication, but no clear data have been published in literature to evaluate risk factors associated with it. The goal of this retrospective study was to identify factors associated with dysphagia occurring after FP for GER disease, with high-resolution manometry (HRM) performed before and after surgery. METHODS: Twenty patients (11 women; mean age, 49 (range, 19-68 years) underwent HRM before and 2-3 months after laparoscopic Nissen-Rossetti FP. Analysis was performed with esophageal pressure topography according to the Chicago Classification. RESULTS: Before FP, ten patients had a manometric hiatal hernia (none after FP). Esophagogastric junction (EGJ) pressures increased after surgery (p < 0.01). Bolus pressurization was present in 2% of all swallows before FP and in 22% after (p = 0.01). Postoperative bolus pressurization percentage was significantly correlated with EGJ relaxation as measured with integrated relaxation pressure (IRP) (r = 0.79, p < 0.01). Eight patients reported dysphagia after FP. The only pre- or post-operative parameter significantly associated with dysphagia was postoperative IRP (5.1 mmHg without vs. 10.3 with dysphagia, p < 0.02). CONCLUSIONS: FP establishes an efficient antireflux mechanism by correcting hiatal hernia and increasing EGJ pressures. EGJ relaxation as measured by IRP is significantly altered after surgery, leading to more frequent motility disorders, and bolus pressurization. Postoperative dysphagia was associated with higher values of IRP.
BACKGROUND: Laparoscopic fundoplication (FP) reduces gastroesophageal reflux (GER) efficiently. Dysphagia is its main complication, but no clear data have been published in literature to evaluate risk factors associated with it. The goal of this retrospective study was to identify factors associated with dysphagia occurring after FP for GER disease, with high-resolution manometry (HRM) performed before and after surgery. METHODS: Twenty patients (11 women; mean age, 49 (range, 19-68 years) underwent HRM before and 2-3 months after laparoscopic Nissen-Rossetti FP. Analysis was performed with esophageal pressure topography according to the Chicago Classification. RESULTS: Before FP, ten patients had a manometric hiatal hernia (none after FP). Esophagogastric junction (EGJ) pressures increased after surgery (p < 0.01). Bolus pressurization was present in 2% of all swallows before FP and in 22% after (p = 0.01). Postoperative bolus pressurization percentage was significantly correlated with EGJ relaxation as measured with integrated relaxation pressure (IRP) (r = 0.79, p < 0.01). Eight patients reported dysphagia after FP. The only pre- or post-operative parameter significantly associated with dysphagia was postoperative IRP (5.1 mmHg without vs. 10.3 with dysphagia, p < 0.02). CONCLUSIONS: FP establishes an efficient antireflux mechanism by correcting hiatal hernia and increasing EGJ pressures. EGJ relaxation as measured by IRP is significantly altered after surgery, leading to more frequent motility disorders, and bolus pressurization. Postoperative dysphagia was associated with higher values of IRP.
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