96 - Freie Mitteilung
3. Juni 2022, 12:15 - 13:45, Panorama 1


Endoscopic surveillance after bariatric surgery: Results from a large, single-institution cohort
I. Lazaridis1, M. Kraljevic1, K. Thomas2, D. Gätzi1, P. Stöcklin1, U. Zingg2, T. Delko1, Presenter: I. Lazaridis1 (1Basel, 2Zurich- Schlieren)

Sleeve gastrectomy (SG) and Roux-en-Y-gastric bypass (RYGB) are associated with long- term abnormalities, including erosive esophagitis (EE), hiatal hernia (HH), gastritis, Barrett`s esophagus and ulcers. The aim of this study is to assess the prevalence of abnormal endoscopic and histologic findings after SG and RYGB in a large cohort.
This is a retrospective analysis of 720 consecutive patients who underwent esophagogastroduodenoscopy (EGD) after primary SG or RYGB. Patients were invited for a control EGD after two years of follow-up. EGD was also performed in order to evaluate postoperative symptoms, such as nausea, vomiting or reflux. If revisional surgery was planned, an EGD was included in the prerevisional work up.
304 post-SG patients (64.1% female) and 416 post-RYGB patients (85% female) were included. The mean age at the time of operation was 43.9 years (95% confidence intervals (CI) 42.5-43.3 years) for the post-SG group and 40.5 years (95% CI 39.4-41.6 years) for the post-RYGB group (p<0.001). The mean preoperative body mass index (BMI) was 44.2kg/m2 (95%CI 43.4-44.9) and 41.1kg/m2(95%CI 40.7-41.5) for the post-SG and the post-RYGB group respectively (p<0.001). EE, gastritis and HH were more prevalent after SG than RYGB (38.8% vs 8.9%, 62.5% vs 27.6% and 28% vs 2.6% respectively, p<0.001). RYGB was associated with more postoperative ulcers than SG (14.4% vs 0.7%, p<0.001). The incidence of anastomotic strictures requiring anastomotic dilatation after RYGB was 4.6%. No significant difference was found in the prevalence of Barrett`s esophagus (4.3% post SG vs. 4.1 post RYGB, p=1.000) and Helicobacter pylori (3.3% post SG vs. 1.2% post RYGB, p=0.065) between the two groups.
SG is associated with higher rates of EE, gastritis and HH, while the prevalence of ulcers is higher post RYGB. There is a low risk of anastomotic stricture post RYGB. The incidence of Barrett`s oesophagus is low after both procedures. Routine use of EGD after bariatric surgery should be evaluated.
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