The Role of Extended Antral Resection on Weight Loss and Metabolic Response After Sleeve Gastrectomy

NCT ID: NCT04109664

Last Updated: 2019-09-30

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Total Enrollment

111 participants

Study Classification

OBSERVATIONAL

Study Start Date

2016-01-31

Study Completion Date

2018-07-31

Brief Summary

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Aim: The impact of extended antral resection (AR) after laparoscopic sleeve gastrectomy (LSG) on weight loss changes and metabolic response is still not clearly elucidated with conflicting results. The investigator's retrospective cohort study aimed to determine whether AR is superior to antral preservation (AP) regarding weight loss and resolution of co-morbidities.

Methods: Patients were divided into two groups according to the distance of gastric division as AR group (2cm from pylorus) and AP group (6cm from pylorus). Postoperative excess weight loss percentile (%EWL) and total body weight loss percentiles (%TBWL) at the end of first, 6th and 12 months were compared. Secondly, metabolic parameters and complications were compared.

Detailed Description

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Following approval of the ethical committee patients who underwent LSG between January 2016 and June 2018 are retrospectively analyzed. Patients with BMI \> 40 were included. Patients with a history of previous bariatric surgery and patients who did not attend regular follow-up visits (first, 6th and 12 months) are excluded.

The patients were grouped according to the distance of gastric division as AP group (6cm from pylorus) and AR group (2cm prom pylorus). The first 68 patients underwent AP, and the following 43 patients underwent AR.

Patient characteristics and demographic data, including age, gender, BMI, co-morbid diseases (hypertension (HT), Type II diabetes, dyslipidemia), biochemical parameters (glucose, HbA1c, C-peptide, insulin, , cholesterol, triglyceride, HDL, LDL, and VLDL was extracted from a prospectively prepared patient's chart. The 30-day outcomes including postoperative morbidity and mortality are taken from patient's folder.

Weight loss alteration at the end of first, 6th and 12 months are calculated as %EWL and %TBWL. The %EWL is calculated as \[(preoperative weight - follow up weight) / (preoperative weight-ideal weight)\] x100, with ideal weight based on a BMI of 25kg/m2. The total body weight loss percentile (%TBWL) is calculated as \[(preoperative weight - follow up weight) / (preoperative body weight)\] x100.

Resolution of co-morbidities was defined as reduction of co-morbidity related symptom and signs with change of specific biochemical blood tests to normal ranges.

The Clavien-Dindo classification scale was used to define the severity of complications: Grade I; no requirement of specific intervention, Grade II; antibiotic treatment, total parenteral nutrition, and/or blood transfusion is mandatory, Grade III; invasive interventions such as endoscopy, percutaneous drainage, or surgery is needed, Grade IV; intensive care management for organ dysfunction, and Grade V; as death, respectively \[10\].

2.1. Surgical Technique The LSGs were performed by two surgeons. Patients were placed in supine position. Antibiotic prophylaxis was started before anesthesia induction by using 2g first-generation cephalosporin for patients \<120kg, and 3g for patients ≥120 kg. The liver is retracted by using Nathanson Hook. The greater omentum is carefully dissected from the stomach at a distance of 2cm for the patients with AR, and 6cm for patients with AP. The omental dissection was performed using 5mm-abdominal ligature (Ligasure®, Metronic-Covidien, Minneapolis, USA), from the antrum towards the angle of His. Transection from the omentum is continued until the left crus has been identified. All sleeves are transected using 36 French orogastric tubes. Green cartridges (4.8 mm staple height) are used for the first firing and blue cartridges (3.5 mm) for the rest. Neither oversewing sutures to the staple line nor staple line reinforcement products are used. Homeostatic metallic clips are used for bleeding at the staple line. If bleeding persists and cannot be controlled, an interrupted suture is performed at the point of bleeding. A leak test with methylene blue is performed to the gastric remnant to assess the integrity of the suture line. The gastric specimen is removed through the 12mm trocar. The procedure is completed by placing an abdominal drain just next to the staple line.

Conditions

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Bariatric Surgery Candidate Obesity, Morbid

Keywords

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antral resection sleeve gastrectomy excess weight loss total body weight loss

Study Design

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Observational Model Type

COHORT

Study Time Perspective

RETROSPECTIVE

Study Groups

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antral preservation

The patients were grouped according to the distance of gastric division as Antral preservation group (6cm from pylorus)

laparoscopic sleeve gastrectomy

Intervention Type PROCEDURE

The greater omentum is carefully dissected from the stomach at a distance of 2cm for the patients with AR, and 6cm for patients with AP. The omental dissection was performed using 5mm-abdominal ligature (Ligasure®, Metronic-Covidien, Minneapolis, USA), from the antrum towards the angle of His. Transection from the omentum is continued until the left crus has been identified. All sleeves are transected using 36 French orogastric tubes. Green cartridges (4.8 mm staple height) are used for the first firing and blue cartridges (3.5 mm) for the rest. Neither oversewing sutures to the staple line nor staple line reinforcement products are used. Homeostatic metallic clips are used for bleeding at the staple line. If bleeding persists and cannot be controlled, an interrupted suture is performed at the point of bleeding. A leak test with methylene blue is performed to the gastric remnant to assess the integrity of the suture line.

Antral resection

The patients were grouped according to the distance of gastric division as Antral preservation group (2 cm from pylorus)

laparoscopic sleeve gastrectomy

Intervention Type PROCEDURE

The greater omentum is carefully dissected from the stomach at a distance of 2cm for the patients with AR, and 6cm for patients with AP. The omental dissection was performed using 5mm-abdominal ligature (Ligasure®, Metronic-Covidien, Minneapolis, USA), from the antrum towards the angle of His. Transection from the omentum is continued until the left crus has been identified. All sleeves are transected using 36 French orogastric tubes. Green cartridges (4.8 mm staple height) are used for the first firing and blue cartridges (3.5 mm) for the rest. Neither oversewing sutures to the staple line nor staple line reinforcement products are used. Homeostatic metallic clips are used for bleeding at the staple line. If bleeding persists and cannot be controlled, an interrupted suture is performed at the point of bleeding. A leak test with methylene blue is performed to the gastric remnant to assess the integrity of the suture line.

Interventions

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laparoscopic sleeve gastrectomy

The greater omentum is carefully dissected from the stomach at a distance of 2cm for the patients with AR, and 6cm for patients with AP. The omental dissection was performed using 5mm-abdominal ligature (Ligasure®, Metronic-Covidien, Minneapolis, USA), from the antrum towards the angle of His. Transection from the omentum is continued until the left crus has been identified. All sleeves are transected using 36 French orogastric tubes. Green cartridges (4.8 mm staple height) are used for the first firing and blue cartridges (3.5 mm) for the rest. Neither oversewing sutures to the staple line nor staple line reinforcement products are used. Homeostatic metallic clips are used for bleeding at the staple line. If bleeding persists and cannot be controlled, an interrupted suture is performed at the point of bleeding. A leak test with methylene blue is performed to the gastric remnant to assess the integrity of the suture line.

Intervention Type PROCEDURE

Eligibility Criteria

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Inclusion Criteria

* Patients with Body Mass Index \> 40 were included

Exclusion Criteria

* Patients with a history of previous bariatric surgery and patients who did not attend regular follow-up visits (first, 6th and 12 months) are excluded
Minimum Eligible Age

18 Years

Maximum Eligible Age

65 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Kocaeli Derince Education and Research Hospital

OTHER

Sponsor Role lead

Responsible Party

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Adem Yuksel

M.D. Department of Gastroenterological surgery,Principal Investigator

Responsibility Role PRINCIPAL_INVESTIGATOR

Locations

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Kocaeli Derince Training and research Hospital

Kocasinan, Derince, Turkey (Türkiye)

Site Status

Countries

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Turkey (Türkiye)

Other Identifiers

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2019-69

Identifier Type: -

Identifier Source: org_study_id