title: Monitoring blood transfusion in patients undergoing coronary artery bypass grafting: an audit methodology.
abstract: OBJECTIVE
  The purpose of this work was to describe the methodology used to build a transfusion database that allows continuous audit of transfusion practices in coronary artery bypass surgery.
  
  
  METHODS
  The transfusion database requires electronic data available from two sources: the hospital's patient administration system; and the local blood transfusion service.
  
  
  RESULTS
  We demonstrated a reduction in the percentage of patients receiving red blood cell transfusion: from 47.4% in 1997/1998 to 31.6% in 2001/2002 (P<0.001). Reductions have also been shown in the percentage of patients receiving fresh-frozen plasma and platelet units.
  
  
  CONCLUSIONS
  The data sourcing the transfusion database should be available to all hospitals through their patient administration systems and local blood transfusion service. Its use can help to reduce transfusion rates significantly.
authors.affiliation: Department of Clinical Governance, The Cardiothoracic Centre-Liverpool, Liverpool, UK. tony.grayson@ctc.nhs.uk
authors.forename: A D
authors.initials: AD
authors.lastname: Grayson
authors.forename: M
authors.initials: M
authors.lastname: Jackson
authors.forename: M J
authors.initials: MJ
authors.lastname: Desmond
mesh_terms: D001803:Blood Transfusion / Q000706:statistics & numerical data*; D001026:Coronary Artery Bypass; D003625:Data Collection; D016208:Databases, Factual; D017707:Erythrocyte Transfusion / Q000706:statistics & numerical data; D006801:Humans; D008485:Medical Audit / Q000379:methods*; D016347:Medical Records Systems, Computerized