title: Risk factors for postoperative pneumonia after gastrectomy for gastric cancer.
abstract: OBJECTIVE
  The number of elderly patients undergoing gastrectomy for gastric cancer is increasing. Yet, although elderly patients are at high risk of postoperative pneumonia, no study has sufficiently investigated which clinicopathological factors are significant risk factors for the development of this complication after gastrectomy with lymph node dissection.
  
  
  METHODS
  We reviewed the medical records of 750 patients who underwent gastrectomy between January 2010 and May 2012, to establish the incidence of postoperative pneumonia (Clavien-Dindo grade II or higher). Univariate and multivariate analyses were performed to identify the risk factors for postoperative pneumonia.
  
  
  RESULTS
  Thirty-two patients (4.3 %) suffered postoperative pneumonia, diagnosed as grades I, II, IIIa, and IVa, in 2 (0.3 %), 28 (3.7 %), 1 (0.2 %), and 1 (0.2 %) patient(s), respectively. Univariate analysis revealed that age (≥75 years), sex (male), diabetes mellitus (DM), a history of smoking, and impairment of respiratory function were significantly associated with postoperative pneumonia. Multivariate analysis revealed that age, impaired postoperative respiratory function, DM, and blood transfusion were independent risk factors for postoperative pneumonia.
  
  
  CONCLUSIONS
  Age, impaired postoperative respiratory function, DM, and blood transfusion were identified as independent risk factors for postoperative pneumonia after gastrectomy.
authors.affiliation: Division of Gastric Surgery, Shizuoka Cancer Center, 1007, Shimonagakubo, Nagaizumi-cho, Shizuoka, 411-8777, Japan.
authors.forename: Yuichiro
authors.initials: Y
authors.lastname: Miki
authors.affiliation: Division of Gastric Surgery, Shizuoka Cancer Center, 1007, Shimonagakubo, Nagaizumi-cho, Shizuoka, 411-8777, Japan.
authors.forename: Rie
authors.initials: R
authors.lastname: Makuuchi
authors.affiliation: Division of Gastric Surgery, Shizuoka Cancer Center, 1007, Shimonagakubo, Nagaizumi-cho, Shizuoka, 411-8777, Japan.
authors.forename: Masanori
authors.initials: M
authors.lastname: Tokunaga
authors.affiliation: Division of Gastric Surgery, Shizuoka Cancer Center, 1007, Shimonagakubo, Nagaizumi-cho, Shizuoka, 411-8777, Japan.
authors.forename: Yutaka
authors.initials: Y
authors.lastname: Tanizawa
authors.affiliation: Division of Gastric Surgery, Shizuoka Cancer Center, 1007, Shimonagakubo, Nagaizumi-cho, Shizuoka, 411-8777, Japan.
authors.forename: Etsuro
authors.initials: E
authors.lastname: Bando
authors.affiliation: Division of Gastric Surgery, Shizuoka Cancer Center, 1007, Shimonagakubo, Nagaizumi-cho, Shizuoka, 411-8777, Japan.
authors.forename: Taiichi
authors.initials: T
authors.lastname: Kawamura
authors.affiliation: Division of Gastric Surgery, Shizuoka Cancer Center, 1007, Shimonagakubo, Nagaizumi-cho, Shizuoka, 411-8777, Japan. m.terashima@scchr.jp.
authors.forename: Masanori
authors.initials: M
authors.lastname: Terashima
mesh_terms: D000328:Adult; D000367:Age Factors; D000368:Aged; D000369:Aged, 80 and over; D000704:Analysis of Variance; D001803:Blood Transfusion; D003920:Diabetes Mellitus; D018871:Endoplasmic Reticulum, Smooth; D005260:Female; D005743:Gastrectomy; D006801:Humans; D008297:Male; D008875:Middle Aged; D011014:Pneumonia / Q000453:epidemiology / Q000209:etiology*; D011183:Postoperative Complications / Q000453:epidemiology / Q000209:etiology*; D012120:Respiration Disorders; D012307:Risk Factors; D013274:Stomach Neoplasms / Q000601:surgery*; D055815:Young Adult
keywords: Gastrectomy; Gastric cancer; Pneumonia