title: Shed blood re-transfusion provides no benefit in computer-assisted primary total knee arthroplasty.
abstract: OBJECTIVE
  This matched case-cohort retrospective study examined the effectiveness of shed blood re-transfusion in reducing the need for allogeneic blood transfusion in computer-assisted primary cemented total knee arthroplasty (TKA).
  
  
  METHODS
  The shed blood re-transfusion system used was the cell saver system. Data from 146 cases were analyzed (73 patients with cell saver, 73 patients without cell saver).
  
  
  RESULTS
  The ABT rate was similar in each group. The mean allogenic blood transfusion volume was similar for each group (CS=214±453 ml, non-CS=288±447 ml). The only factors correlated with allogenic blood transfusion use were low preoperative hemoglobin and low body mass index. Two patients in cell saver group experienced shivering after re-transfusion.
  
  
  CONCLUSIONS
  Shed blood re-transfusion provided no blood management benefits in computer-assisted primary TKA and is therefore recommended only for selected patients with low hemoglobin levels and low body mass index.
authors.affiliation: Department of Orthopaedic Surgery, Korea University School of Medicine, Anam Hospital, 126-1, Anam-dong 5-ga, Seongbuk-gu, Seoul, 136-705, Korea.
authors.forename: Dae-Hee
authors.initials: DH
authors.lastname: Lee
authors.forename: Debabrata
authors.initials: D
authors.lastname: Padhy
authors.forename: Soon-Hyuck
authors.initials: SH
authors.lastname: Lee
authors.forename: Tae-Kwon
authors.initials: TK
authors.lastname: Kim
authors.forename: Jungsoon
authors.initials: J
authors.lastname: Choi
authors.forename: Seung-Beom
authors.initials: SB
authors.lastname: Han
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000704:Analysis of Variance; D019645:Arthroplasty, Replacement, Knee / Q000009:adverse effects / Q000379:methods*; D016063:Blood Loss, Surgical / Q000517:prevention & control*; D001804:Blood Transfusion, Autologous / Q000379:methods* / Q000706:statistics & numerical data; D016022:Case-Control Studies; D016009:Chi-Square Distribution; D005260:Female; D005500:Follow-Up Studies; D006488:Hemostasis, Surgical / Q000379:methods; D006801:Humans; D007720:Knee Prosthesis; D016015:Logistic Models; D008297:Male; D008875:Middle Aged; D016017:Odds Ratio; D011300:Preoperative Care / Q000379:methods; D012016:Reference Values; D012189:Retrospective Studies; D018570:Risk Assessment; D025321:Surgery, Computer-Assisted / Q000009:adverse effects / Q000379:methods*; D014184:Transplantation, Homologous / Q000379:methods / Q000706:statistics & numerical data; D016896:Treatment Outcome
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