title: [Perioperative risk factors associated with allogeneic blood transfusion in patients with hip fracture surgery].
abstract: BACKGROUND
  The aim of this article is to identify risk factors associated with allogeneic blood transfusion (ABT) in patients undergoing hip surgery during 2008-2009, at a General Hospital, in Yucatán, Mexico.
  
  
  METHODS
  Data of patients who received at least one package of allogeneic blood either before, during, or after hip surgery, (cases, n = 118), was compared against that of patients having the same type of surgery, but not transfused with an ABT (controls, n =138). Logistic regression analysis was carried on in estimating associations. Odd Ratios (OR) and 95 % confidence intervals (95 % CI), were applied when appropriate.
  
  
  RESULTS
  Bleeding grater than or equal to 400 ml during surgery (vs < 400 ml, OR 5.68, 95% CI 2.5-12.9, p = 0.007), and having pre surgical hemoglobin (Hb) concentration < 11 g/dL (vs = 11 g/dL, OR 2.86, 95% CI 1.5-5.6; p = 0.001) were both, associated with ABT. Duration of surgery, the femoral segment involved, the surgical procedure and the postsurgical Hb, were all excluded.
  
  
  CONCLUSIONS
  Bleeding grater than or equal to 400 ml during surgery and having pre surgical Hb concentration < 11 g/dL were both, associated with increased risk of receiving an ABT.
authors.affiliation: Coordinación Clínica, Hospital General Regional 12, Instituto Mexicano del Seguro Social, Mérida, Yucatán, México. durannah@prodigy.net.mx.
authors.forename: Jaime Jesús
authors.initials: JJ
authors.lastname: Durán-Nah
authors.forename: Sofía Elisa
authors.initials: SE
authors.lastname: Pastelín-Ruiz
authors.forename: Emilio de Jesús
authors.initials: Ede J
authors.lastname: Miam-Viana
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D015415:Biomarkers / Q000097:blood; D016063:Blood Loss, Surgical; D001803:Blood Transfusion / Q000706:statistics & numerical data*; D016022:Case-Control Studies; D005260:Female; D005592:Fracture Fixation; D006454:Hemoglobins / Q000378:metabolism; D006620:Hip Fractures / Q000097:blood / Q000601:surgery*; D006801:Humans; D016015:Logistic Models; D008297:Male; D008875:Middle Aged; D057234:Preoperative Period; D012307:Risk Factors
chemical_list: D015415:Biomarkers; D006454:Hemoglobins
keywords: Blood transfusion; Hip fractures; Risk factors