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Year : 2022  |  Volume : 18  |  Issue : 1  |  Page : 38-44

Effect of one anastomosis gastric bypass on liver function tests: A comparison between 150 cm and 200 cm biliopancreatic limbs

1 Bariatric Unit, Sunderland Royal Hospital, South Tyneside and Sunderland NHS Foundation Trust, UK
2 Bariatric unit, Doncaster and Bassetlaw Teaching Hospitals, Doncaster, UK
3 Department of Upper GI Surgery, Birmingham Heartlands Hospital, University Hospital Birmingham NHS Foundation Trust, UK

Correspondence Address:
Prof. Kamal Mahawar
Bariatric Unit, Sunderland Royal Hospital, Sunderland, SR4 7TP
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/jmas.JMAS_249_20

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Context: Some studies have shown that one anastomosis gastric bypass (OAGB) results in the derangement of liver function tests (LFTs). We wanted to study this in our patients. Aims: The aims are to study the effect of OAGB on LFTs and to compare the effect of a biliopancreatic limb (BPL) of 150 cm (OAGB-150) to a BPL of 200 cm (OAGB-200). Settings and Design: The study was a retrospective cohort study conducted at a university hospital. Materials and Methods: Information was obtained from our prospectively maintained database and hospital's computerised records. Statistical Analysis: A P < 0.05 was regarded statistically significant; however, given the number of variables examined, findings should be regarded as exploratory. Results: A total of 405 patients underwent an OAGB-200 (n = 234) or OAGB-150 (n = 171) in our unit between October 2012 and July 2018. There were significant improvements in gamma-glutamyl transpeptidase (GGT) levels at 1 and 2 years after OAGB-200 and significant worsening in the levels of alkaline phosphatase (ALP) and albumin at 1 and 2 years. There was a significant improvement in GGT levels at 1 and 2 years after OAGB-150 and in alanine transaminase levels at 1 year. There was a significant worsening in ALP and albumin levels at both follow-up points in this group. OAGB-150 group had a significantly lower bilirubin level at 1 year and significantly fewer abnormal ALP values at 2 years in comparison with OAGB-200 patients. Conclusions: This exploratory study demonstrates the overall safety of OAGB with regard to its effect on LFTs, with no remarkable difference between OAGB-150 and OAGB-200.


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