title: Randomized trial comparing packed red cell blood transfusion with and without leukocyte depletion for gastrointestinal surgery.
abstract: BACKGROUND
  Allogeneic transfusion is associated with postoperative infections that significantly prolong hospital stays and increase costs. Recent studies suggest that filtering leukocytes from blood prior to transfusion reduces the risk of postoperative infection associated with blood transfusion. We compared the incidence of postoperative infections, hospital stays, and hospital charges of gastrointestinal surgery patients transfused with packed red cells or leukocyte-depleted cells.
  
  
  METHODS
  Consecutive patients admitted for elective gastrointestinal surgery without previous blood transfusion were randomized to receive routine packed red cells or packed red cells filtered to remove leukocytes if transfusion was required. Multivariate analysis was used to assess the significance of the relationship between leukocyte-depleted blood and postoperative infectious complications, postoperative stay, and hospital charges.
  
  
  RESULTS
  Fifty-nine (27%) of the 221 patients were transfused. The most significant variable related to transfusion was intraoperative blood loss (P <0.0001), followed by admission hematocrit (P <0.0001) and age (P = 0.0022). Infections were noted in 16% of the patients: 11% of untransfused patients, 16% of leukocyte-depleted blood recipients, and 44% of patients transfused with packed red cells. Both operative site and nosocomial infections were significantly (P <0.001) more frequent in patients transfused with packed red cells compared with patients transfused with leukocyte-depleted red cells. Postoperative stays averaged 9 days for untransfused patients, 12 days for leukocyte-depleted recipients, and 18 days for recipients of packed red cells. Hospital charges were $19,132, $33,954, and $41,002, respectively. Both transfusion and infection were significantly (P <0.001) related to postoperative stay in multivariate analysis. Hospital charges were significantly related to postoperative stay (P <0.001), blood loss (P <0.001), age (P <0.001), infection (P = 0.007), and randomization to packed red cells (P = 0.032).
  
  
  CONCLUSIONS
  Filtering blood of leukocytes prior to transfusion for elective gastrointestinal surgery is associated with lower risk of postoperative infection, shorter postoperative stays, and lower hospital charges.
authors.affiliation: Department of Surgery, Mount Sinai Medical Center, New York, New York 10029, USA.
authors.forename: P I
authors.initials: PI
authors.lastname: Tartter
authors.forename: K
authors.initials: K
authors.lastname: Mohandas
authors.forename: P
authors.initials: P
authors.lastname: Azar
authors.forename: J
authors.initials: J
authors.lastname: Endres
authors.forename: J
authors.initials: J
authors.lastname: Kaplan
authors.forename: M
authors.initials: M
authors.lastname: Spivack
mesh_terms: D003362:Cost-Benefit Analysis; D003428:Cross Infection / Q000517:prevention & control; D013505:Digestive System Surgical Procedures / Q000009:adverse effects*; D017707:Erythrocyte Transfusion / Q000191:economics / Q000379:methods*; D005260:Female; D005374:Filtration; D017722:Hospital Charges; D006801:Humans; D007902:Length of Stay; D007958:Leukocyte Count; D008297:Male; D008875:Middle Aged; D011183:Postoperative Complications / Q000517:prevention & control*