title: Postoperative Changes in Body Composition After Pancreaticoduodenectomy Using Multifrequency Bioelectrical Impedance Analysis.
abstract: BACKGROUND
  Nutritional status is one of the most important clinical determinants of outcome after surgery. The aim of this study was to compare changes in the body composition of patients undergoing pancreaticoduodenectomy (PD), distal gastrectomy (DG), or total gastrectomy (TG).
  
  
  METHODS
  The parameters of body composition were measured using multifrequency bioelectrical impedance analysis with an inBody 720 (Biospace Inc. Tokyo. Japan) in 60 patients who had undergone PD (n = 18), DG (n = 30), or TG (n = 12). None of the patients had recurrence or were treated with chemotherapy. Changes between the preoperative data and results and those obtained 12 months after surgery were evaluated.
  
  
  RESULTS
  Twelve months after surgery, the body weight change in the PD group was significantly lower than in the TG and DG groups (-1.2 ± 3.8 vs -7.4 ± 4.4 and -4.0 ± 3.2 kg, respectively; p < 0.01 vs TG, p < 0.05 vs DG). The body weight change correlated with the fat mass change in all groups.
  
  
  CONCLUSIONS
  The type and extent of surgery has a different effect on long-term body weight and body composition. Bioelectric impedance analysis can be used to assess body composition and may be useful for nutritional assessment in patients who have undergone these surgeries.
authors.affiliation: Department of Gastroenterological Surgery, National Hospital Organization Osaka National Hospital, 2-1-14 Hoenzaka, Chuo-ku, Osaka, 540-0006, Japan.|Department of Gastroenterological Surgery, Graduate School of Medicine Osaka University, 2-2 Yamadaoka, Suita-shi, Osaka, 565-0871, Japan.
authors.forename: Manabu
authors.initials: M
authors.lastname: Mikamori
authors.affiliation: Department of Gastroenterological Surgery, National Hospital Organization Osaka National Hospital, 2-1-14 Hoenzaka, Chuo-ku, Osaka, 540-0006, Japan.
authors.forename: Atsushi
authors.initials: A
authors.lastname: Miyamoto
authors.affiliation: Department of Gastroenterological Surgery, National Hospital Organization Osaka National Hospital, 2-1-14 Hoenzaka, Chuo-ku, Osaka, 540-0006, Japan.|Department of Gastroenterological Surgery, Graduate School of Medicine Osaka University, 2-2 Yamadaoka, Suita-shi, Osaka, 565-0871, Japan.
authors.forename: Tadafumi
authors.initials: T
authors.lastname: Asaoka
authors.affiliation: Department of Gastroenterological Surgery, National Hospital Organization Osaka National Hospital, 2-1-14 Hoenzaka, Chuo-ku, Osaka, 540-0006, Japan.
authors.forename: Sakae
authors.initials: S
authors.lastname: Maeda
authors.affiliation: Department of Gastroenterological Surgery, National Hospital Organization Osaka National Hospital, 2-1-14 Hoenzaka, Chuo-ku, Osaka, 540-0006, Japan.
authors.forename: Naoki
authors.initials: N
authors.lastname: Hama
authors.affiliation: Department of Gastroenterological Surgery, National Hospital Organization Osaka National Hospital, 2-1-14 Hoenzaka, Chuo-ku, Osaka, 540-0006, Japan.
authors.forename: Kazuyoshi
authors.initials: K
authors.lastname: Yamamoto
authors.affiliation: Department of Gastroenterological Surgery, National Hospital Organization Osaka National Hospital, 2-1-14 Hoenzaka, Chuo-ku, Osaka, 540-0006, Japan.
authors.forename: Motohiro
authors.initials: M
authors.lastname: Hirao
authors.affiliation: Department of Gastroenterological Surgery, National Hospital Organization Osaka National Hospital, 2-1-14 Hoenzaka, Chuo-ku, Osaka, 540-0006, Japan.
authors.forename: Masataka
authors.initials: M
authors.lastname: Ikeda
authors.affiliation: Department of Gastroenterological Surgery, National Hospital Organization Osaka National Hospital, 2-1-14 Hoenzaka, Chuo-ku, Osaka, 540-0006, Japan.
authors.forename: Mitsugu
authors.initials: M
authors.lastname: Sekimoto
authors.affiliation: Department of Gastroenterological Surgery, Graduate School of Medicine Osaka University, 2-2 Yamadaoka, Suita-shi, Osaka, 565-0871, Japan.
authors.forename: Yuichiro
authors.initials: Y
authors.lastname: Doki
authors.affiliation: Department of Gastroenterological Surgery, Graduate School of Medicine Osaka University, 2-2 Yamadaoka, Suita-shi, Osaka, 565-0871, Japan.
authors.forename: Masaki
authors.initials: M
authors.lastname: Mori
authors.affiliation: Department of Gastroenterological Surgery, National Hospital Organization Osaka National Hospital, 2-1-14 Hoenzaka, Chuo-ku, Osaka, 540-0006, Japan. nakamori@onh.go.jp.
authors.forename: Shoji
authors.initials: S
authors.lastname: Nakamori
mesh_terms: D000368:Aged; D001823:Body Composition; D001835:Body Weight; D004379:Duodenal Neoplasms / Q000601:surgery*; D017097:Electric Impedance; D005260:Female; D005743:Gastrectomy; D006801:Humans; D007564:Japan; D008297:Male; D008875:Middle Aged; D009752:Nutritional Status; D010190:Pancreatic Neoplasms / Q000601:surgery*; D016577:Pancreaticoduodenectomy; D011184:Postoperative Period
keywords: Body composition; Body weight; Gastrectomy; Multifrequency bioelectrical impedance analysis; Pancreaticoduodenectomy