title: Relationship between gastric pouch and weight loss after laparoscopic sleeve gastrectomy.
abstract: BACKGROUND
  Laparoscopic sleeve gastrectomy (LSG) is considered safe and effective even as conversion procedure after primary bariatric operations. The correlation between gastric pouch volumes and patients weight loss remains unclear.
  
  
  METHODS
  To assess a correlation between the gastric remnant size and the weight loss, we reviewed 49 consecutive barium swallow UGS performed at our institute from August 2012 through May 2014 in LSG patients with symptoms and/or unsatisfactory weight loss. The anteroposterior (AP), laterolateral (LL) and vertical (CC) diameters of the gastric pouch were measured to calculate the volume by the formula of the ellipsoid (AP × LL × CC × 0.5). Patients were divided in two groups: group 1 without gastric pouch (n = 36) and group 2 with gastric pouch (n = 13). Correlation between pouch volume and weight loss data was calculated with t Student's and Fisher tests to compare the percent excess body mass index (BMI) and percent excess body mass loss (EBL) between two groups, and P < 0.05 was considered statistically significant.
  
  
  RESULTS
  The mean percent EBL was 26.54 ± 11.02 and 27.12 ± 12.35 kg/m(2) in groups with and without pouch, respectively. The mean volume of the pouch after LSG was 17.13 ± 21.56 mm(3). Pouch volume, when present, was not significantly correlated to weight loss (P = 0.88 95% CI, CL 19.88-33.20 group 2; CL 22.94-31.30 group 1).
  
  
  CONCLUSIONS
  No statistical correlation was found between the volume of the gastric pouch and weight loss (percent EBL) after LSG in symptomatic or with unsatisfactory weight loss patients.
authors.affiliation: University Radiology, Department of Medicine, University Hospital of Padua, 2 Via Giustiniani, 35128, Padua, PD, Italy.
authors.forename: Giulio
authors.initials: G
authors.lastname: Barbiero
authors.affiliation: University Radiology, Department of Medicine, University Hospital of Padua, 2 Via Giustiniani, 35128, Padua, PD, Italy. giovi.romanucci@libero.it.
authors.forename: Giovanna
authors.initials: G
authors.lastname: Romanucci
authors.affiliation: University Radiology, Department of Medicine, University Hospital of Padua, 2 Via Giustiniani, 35128, Padua, PD, Italy.
authors.forename: Valeria
authors.initials: V
authors.lastname: Ortu
authors.affiliation: University Radiology, Department of Medicine, University Hospital of Padua, 2 Via Giustiniani, 35128, Padua, PD, Italy.
authors.forename: Monica
authors.initials: M
authors.lastname: Zuliani
authors.affiliation: University Radiology, Department of Medicine, University Hospital of Padua, 2 Via Giustiniani, 35128, Padua, PD, Italy.
authors.forename: Diego
authors.initials: D
authors.lastname: Miotto
authors.affiliation: University Radiology, Department of Medicine, University Hospital of Padua, 2 Via Giustiniani, 35128, Padua, PD, Italy.
authors.forename: Fabio
authors.initials: F
authors.lastname: Pomerri
authors.affiliation: Center of Excellence for Bariatric and Metabolic Surgery, University Hospital of Padua, 2 Via Giustiniani, 35128, Padua, PD, Italy.
authors.forename: Alice
authors.initials: A
authors.lastname: Albanese
authors.affiliation: Center of Excellence for Bariatric and Metabolic Surgery, University Hospital of Padua, 2 Via Giustiniani, 35128, Padua, PD, Italy.
authors.forename: Daunia
authors.initials: D
authors.lastname: Verdi
authors.affiliation: Center of Excellence for Bariatric and Metabolic Surgery, University Hospital of Padua, 2 Via Giustiniani, 35128, Padua, PD, Italy.
authors.forename: Luca
authors.initials: L
authors.lastname: Prevedello
authors.affiliation: Center of Excellence for Bariatric and Metabolic Surgery, University Hospital of Padua, 2 Via Giustiniani, 35128, Padua, PD, Italy.
authors.forename: Mirto
authors.initials: M
authors.lastname: Foletto
mesh_terms: D000328:Adult; D000368:Aged; D005260:Female; D005743:Gastrectomy / Q000379:methods*; D006801:Humans; D010535:Laparoscopy; D008297:Male; D008875:Middle Aged; D009767:Obesity, Morbid / Q000601:surgery; D012189:Retrospective Studies; D015431:Weight Loss; D055815:Young Adult
keywords: Bariatric surgery; Gastric fundus; Gastric pouch; Laparoscopic sleeve gastrectomy; Obesity; Weight loss