To assess the causes of failure in a blood saving program and the cons
equent need for homologous transfusions during major orthopedic surger
y, data were collected from six orthopedic centers where an autotransf
usion program was carried out from 1992-1994. The 1,576 (1,016 female
and 560 male) patients studied (average age 63.6 +/- 10 years) were tr
eated either for total hip prosthesis (1,144 pts) total knee prosthesi
s (212 pts), plate and screw removal plus hip prosthesis (8 pts), hip
revision (cup 48 pts, stem 10 pts, cup plus stem 146 pts) and total kn
ee revision (8 pts). Ninety percent of patients did not undergo homolo
gous transfusions, which was significantly connected to: male sex (8%
versus 11.7% p=0.02), younger age (63.2 vs 66.9 years, p=0.0001), high
er weight (male 76 vs 70.7 Kg. p = 0.003, female 65.6 vs 61.9 Kg. p =
0.0003); higher baseline Hb (13.9 vs 12.8 g/dl, p = 0.0041), shorter o
peration time (110 vs 128 minutes, p = 0.0001); use of indobufen for a
ntithromboembolic prophylaxis (indobufen 4.6% vs heparin calcium 15.2%
vs low molecular weight heparin 9% p = 0.0001). On the contrary, the
factors favoring homologous transfusions were: peripheral anesthesia (
spinal and epidural 15.3% vs general 9.3% vs integrated 9.8% p = 0.016
), total hip or knee revision, fixation device removal before hip pros
thesis, systemic hypertension and coronary heart disease.