title: Effect of preoperative eating patterns and preoperative weight loss on the short- and mid-term weight loss results of sleeve gastrectomy.
abstract: BACKGROUND
  Weight loss depends directly on the adhesion to the postoperative diet in patients undergoing a sleeve gastrectomy. The aim of this study is to evaluate the effect of different preoperative feeding patterns and the adhesion to a preoperative diet on short and mid- term postoperative weight loss.
  
  
  METHODS
  A prospective study of all morbidly obese patients undergoing a laparoscopic sleeve gastrectomy as a bariatric procedure between 2008 and 2012 was performed. Preoperative feeding patterns and weight loss, preoperatively and postoperatively at 12 and 24 months, were evaluated.
  
  
  RESULTS
  A total of 50 patients were included, with a mean preoperative BMI of 51,2+7,9 kg/m(2). All the patients presented a feeding pattern of big eaters, 44% of snackers, 40% of sweet eaters and 48% reported regular ingestion of «light» soft drinks. Mean preoperative excess weight loss (EWL) was 13,4% (range 10-31,4%). At 12 months mean EWL was 83,7% and at 24 months 82,4%. Pre and postoperative EWL showed a direct correlation at 12 and 24 months. Mean EWL was significantly lower in snackers, sweet eaters and those drinking «light» soft drinks regularly.
  
  
  CONCLUSIONS
  Preoperative weight loss correlates directly with postoperative weight loss at 1 and 2 years. Snackers, sweet eaters and «light» soft drink consumers, associated with a big eater pattern, achieve a significantly lower postoperative weight loss.
authors.affiliation: Servicio de Cirugía General, Unidad de Obesidad, Hospital General Universitario de Elche, Alicante, España. Electronic address: jruiztovar@gmail.com.
authors.forename: Jaime
authors.initials: J
authors.lastname: Ruiz-Tovar
authors.affiliation: Servicio de Endocrinología, Unidad de Obesidad, Hospital General Universitario de Elche, Alicante, España.
authors.forename: Evangelina
authors.initials: E
authors.lastname: Boix
authors.affiliation: Servicio de Psiquiatría, Unidad de Obesidad, Hospital General Universitario de Elche, Alicante, España.
authors.forename: José María
authors.initials: JM
authors.lastname: Bonete
authors.affiliation: Servicio de Psiquiatría, Unidad de Obesidad, Hospital General Universitario de Elche, Alicante, España.
authors.forename: Rosana
authors.initials: R
authors.lastname: Martínez
authors.affiliation: Servicio de Cirugía General, Unidad de Obesidad, Hospital General Universitario de Elche, Alicante, España.
authors.forename: Lorea
authors.initials: L
authors.lastname: Zubiaga
authors.affiliation: Servicio de Cirugía General, Unidad de Obesidad, Hospital General Universitario de Elche, Alicante, España.
authors.forename: María
authors.initials: M
authors.lastname: Díez
authors.affiliation: Servicio de Cirugía General, Unidad de Obesidad, Hospital General Universitario de Elche, Alicante, España.
authors.forename: Rafael
authors.initials: R
authors.lastname: Calpena
mesh_terms: D000328:Adult; D005247:Feeding Behavior; D005260:Female; D005743:Gastrectomy / Q000379:methods*; D015391:Gastroplasty / Q000379:methods*; D006801:Humans; D008297:Male; D009767:Obesity, Morbid / Q000601:surgery*; D057234:Preoperative Period; D011446:Prospective Studies; D013997:Time Factors; D016896:Treatment Outcome; D015431:Weight Loss
keywords: Dulces; Gastrectomía vertical; Patrones de alimentación preoperatorios; Picoteadores; Preoperative feeding patterns; Preoperative weight loss; Pérdida de peso preoperatoria; Refrescos; Sleeve gastrectomy; Snackers; Soft drinks; Sweet eaters