Efficacy of Red Cell Salvage Systems in Open Acetabular Surgery

Table 2

Comparison of patients who received autologous blood transfusion to those who did not. Elevated body mass index and higher estimated blood loss were significantly more likely to receive an autologous blood transfusion. There was no association between volume or rate of allogenic blood transfused preoperatively, intraoperatively, or postoperatively in patients who received an autologous transfusion compared to patients who did not. There was no association between surgical approach, gender, or fracture pattern and those receiving an autologous transfusion. IL = Ilioinguinal, KL = Kocher-Langenbeck, ASA = American Society of Anesthesiology Score, BMI = body mass index, EBL = estimated blood loss, EF–elementary fracture pattern, AF = associated fracture pattern.

	No autologous transfusion	Autologous transfusion	value
Average age	45	24	0.63
Average BMI	27.9	33.7	<0.01
EBL (ml)	227	459	<0.01
ASA <2—ASA >2	31/55–24/55	4/8–4/8	0.74
Preoperative hemoglobin (mg/dl)	10.9	11.9	0.16
Days to surgery	4.3	4.0	0.57
Mean number of preoperative allogenic blood transfusion in units	0.5	0.25	0.57
Mean number of intraoperative allogenic blood transfusion in units	0.4	0.13	0.33
Mean number of postoperative allogenic blood transfusion in units	0.45	0.36	0.87
Rate of preoperative allogenic blood transfusion	11/55	1/8	0.47
Rate of intraoperative allogenic blood transfusion	13/55	1/8	0.48
Rate of postoperative allogenic blood transfusion	9/55	2/8	0.54
IL vs KL approach	3/55–52/55	1/8–7/8	0.45
Females - males	13/55–42/55	3/8–5/8	0.40
EF—AF	26/55–29/55	3/8–5/8	0.60