title: Alterations in body composition after gastroplasty for morbid obesity.
abstract: Body compositional changes during rapid weight loss and after weight stabilization were prospectively studied in morbidly obese patients undergoing gastroplasty operations. Body composition was studied preoperatively and 6 and 24 months postoperatively in 23 patients by use of a total body counter (40K) and an isotope dilution technique. The mean fat mass, cell mass, and intracellular water (ICW) decreased during the first 6 months (p less than 0.001) and remained unchanged at the 24-month test. However, the mean liters of extracellular water (ECW) did not change. Consequently, the ECW/ICW ratio, high in states of malnutrition, rose above postoperative levels. A strong correlation was found between decreases in cell mass and increases in the ECW/ICW ratio.
authors.affiliation: Dept. of Clinical Nutrition, Sahlgren's Hospital, University of Gothenburg, Sweden.
authors.forename: M E
authors.initials: ME
authors.lastname: Zimmerman
authors.forename: H
authors.initials: H
authors.lastname: Andersson
authors.forename: L
authors.initials: L
authors.lastname: Lundell
authors.forename: L
authors.initials: L
authors.lastname: Olbe
mesh_terms: D000328:Adult; D001823:Body Composition; D015992:Body Mass Index; D001835:Body Weight; D005260:Female; D015391:Gastroplasty; D006801:Humans; D008297:Male; D008875:Middle Aged; D009748:Nutrition Disorders / Q000209:etiology; D009767:Obesity, Morbid / Q000601:surgery*; D011446:Prospective Studies; D011897:Random Allocation; D013997:Time Factors