The present study indicates that the intraoperative use of ECMO is associated with increased efficacy and safety, regarding short-term outcomes, compared to CPB. Well-designed, randomized studies, comparing ECMO to CPB, are necessary to assess their clinical outcomes further.

We aim to review the available literature on obese patients treated with ursodeoxycholic acid (UDCA) in order to prevent gallstone formation after bariatric surgery. A systematic literature search was performed in PubMed, Cochrane library, and Scopus databases, in accordance with the PRISMA guidelines. Eight studies met the inclusion criteria incorporating 1355 patients. Random-effects meta-analysis showed a lower incidence of gallstone formation in patients taking UDCA. Subgroup analysis reported fewer cases of gallstone disease in the UDCA group in relation to different bariatric procedures, doses of administered UDCA, and time from bariatric surgery. Adverse events were similar in both groups. Fewer patients required cholecystectomy in UDCA group. No deaths were reported. The administration of UDCA after bariatric surgery seems to prevent gallstone formation.

We aim to review the available literature on obese patients treated with one-anastomosis gastric bypass (OAGB) or laparoscopic sleeve gastrectomy (LSG), in order to compare the clinical outcomes and intraoperative parameters of the two methods. A systematic literature search was performed in PubMed, Cochrane Library, and Scopus databases, in accordance with the PRISMA guidelines. Seventeen studies met the inclusion criteria incorporating 6761 patients. This study reveals increased weight loss, remission of comorbidities, shorter mean hospital stay, and lower mortality in the OAGB group. The incidence of leaks and intra-abdominal bleeding was similar between the two approaches. Well-designed, randomized controlled studies, comparing LSG to OAGB, are necessary to further assess their clinical outcomes.

We aim to review the available literature on obese patients treated with laparoscopic Roux-en-Y gastric bypass (LRYGB) or laparoscopic sleeve gastrectomy (LSG) after failed laparoscopic adjustable gastric banding (LAGB), in order to compare the clinical outcomes of the two methods. A systematic literature search was performed in PubMed, CENTRAL, and Scopus databases, in accordance with the PRISMA guidelines. Eight studies met the inclusion criteria incorporating 635 patients. Both procedures are associated with comparable complications, conversions, mean hospital stay, and weight loss at 6 and 12 months. In the LRYGB group, % excess weight loss (%EWL) and BMI reduction after 24 months were increased. Well-designed, randomized controlled studies, comparing revisional LRYGB and LSG, are necessary to further assess their outcomes.

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