Measuring the small bowel length may decrease the incidence of malnutrition after laparoscopic one-anastomosis...

Area of Science:

• Bariatric Surgery
• Gastroenterology
• Obesity Medicine

Background:

• Laparoscopic one (single)-anastomosis gastric bypass (OAGB) is a proven treatment for morbid obesity.
• The optimal length of the small bowel bypass in OAGB is not definitively established.

Purpose of the Study:

• To evaluate clinical outcomes of OAGB using a tailored bypass based on total small bowel length.
• To compare a technique ensuring a minimum 400-cm common channel with a standard tailored bypass.

Main Methods:

• Retrospective comparison of 470 patients (Group II) undergoing OAGB with a 400-cm common channel against a matched control group (Group I) with standard tailored bypass.
• Data collected prospectively included preoperative clinical profiles, operative details, hospital stay, complication rates, and 1-year postoperative outcomes.

Main Results:

• Group II demonstrated longer operative times but significantly shorter hospital stays and lower complication rates compared to Group I.
• One-year outcomes showed comparable body mass index, total weight loss, and diabetes remission rates between groups.
• Group II experienced significantly lower rates of anemia, secondary hyperparathyroidism, and hypoalbuminemia.

Conclusions:

• Routine measurement of total small bowel length to establish a minimum 400-cm common channel in OAGB is associated with reduced malnutrition.
• This approach maintains the efficacy of OAGB for weight loss and diabetes resolution.
• The findings suggest an improved safety profile regarding nutritional deficiencies after OAGB.