title: [Risk factors for the determination of transfusion requirements during implantation of hip endoprostheses].
abstract: OBJECTIVE
  We have carried out an observational study to determine the pre-operative risk factors for transfusion in patients undergoing implantation of a hip prosthesis.
  
  
  METHODS
  47 patients were recruited to the study. The following parameters were recorded: peri-operative transfusions, infusions, blood and secretion losses, re-transfusions and other operative variables. In addition, patient-specific data (age, body mass index, co-existing conditions, haemoglobin) were determined. The data were grouped by transfusions and re-transfusions and submitted to statistical analysis.
  
  
  RESULTS
  The transfusion incidence in knee endoprosthesis implantation procedures was low at 25.5 %. Age above 74 years, ASA 3 and 4 were identified as significant risk factors for transfusion. If the significant risk groups identified in this study are left aside, a transfusion incidence of 5.6 % is found.
  
  
  CONCLUSIONS
  For the implantation of an artificial hip joint, we recommend autologous blood donation only for patients with ASA 3. For other patients it is recommended that homologous banked blood (2 units of cross-matched concentrated red cells) be held in readiness.
authors.affiliation: Chirurgische Klinik, HELIOS Kliniken Schwerin. joerg_sauer@gmx.net
authors.forename: J
authors.initials: J
authors.lastname: Sauer
authors.forename: R
authors.initials: R
authors.lastname: Sauer
authors.forename: T
authors.initials: T
authors.lastname: Weyer
authors.forename: F
authors.initials: F
authors.lastname: Marusch
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D019644:Arthroplasty, Replacement, Hip; D001782:Blood Donors; D016063:Blood Loss, Surgical / Q000503:physiopathology; D001803:Blood Transfusion; D001804:Blood Transfusion, Autologous; D001810:Blood Volume / Q000502:physiology; D005260:Female; D006400:Hematocrit; D006452:Hemoglobinometry; D006801:Humans; D008297:Male; D008875:Middle Aged; D015207:Osteoarthritis, Hip / Q000097:blood / Q000601:surgery*; D019990:Perioperative Care; D011446:Prospective Studies; D011474:Prosthesis Design; D019233:Retreatment; D012307:Risk Factors