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. 2013 Jun;25(2):65-70.
doi: 10.5792/ksrr.2013.25.2.65. Epub 2013 May 29.

The effect of autotransfusion system in minimally invasive total knee arthroplasty

Dong-Jun Ha  1 , Hyung-Seok Lee, Jeong-Han Ha, Jong-Yup Kim, Dae-Won Jung
Affiliations

The effect of autotransfusion system in minimally invasive total knee arthroplasty

Dong-Jun Ha et al. Knee Surg Relat Res. 2013 Jun.

Abstract

Purpose: To evaluate the effect of autotransfusion system in minimally invasive total knee arthroplasty (TKA).

Materials and methods: Seventy-one patients who underwent unilateral minimally invasive TKA between October 2009 and June 2010 were selected. The first group included 36 patients who received standard vacuum drainage and the second group, 35 patients who underwent autologous retransfusion drainage. In the first group, allogeneic blood transfusion was performed if the postoperative hemoglobin level was <7.0 g/dL or 7.0-8.0 g/dL with the presence of a medical complication and an anemic symptom. The second group received autotransfusion and allogeneic transfusion additionally according to the same criteria. Changes in the pre- and postoperative hemoglobin level, amount of auto- or allotransfusion, and frequency of allogeneic transfusion were assessed.

Results: Allogeneic transfusion was required in 13 patients (36.1%) in the first group and four patients (11.4%) in the second group. The mean allogeneic transfusion volume was significantly low in the second group compared to the first group (64.4 mL vs. 278.9 mL; p<0.05). The hemoglobin level on the 1st postoperative day compared to the preoperative level decreased by 22.6% in the first group and 11.7% in the second group. The postoperative hemoglobin level was higher in the second group (p<0.05).

Conclusions: Minimally invasive unilateral TKA with an autotransfusion system can be beneficial in patients with no medical complications because of the decreased allogeneic transfusion.

Keywords: Autotransfusion; Knee; Minimal invasive surgery; Total knee arthroplasty.

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Conflict of interest statement

No potential conflict of interest relevant to this article was reported.

Figures

Fig. 1
Fig. 1
The Hemovac Autotransfusion System was composed of autotransfusion evacuator, evacuator tubing, and exudate collection bag.
Fig. 2
Fig. 2
The amount of drainage on the 1st postoperative day after total knee arthroplasty was 68.2% of the total amount of drainage in both groups. (A) The amount of drainage in group 1. (B) The amount of drainage in group 2.
See this image and copyright information in PMC

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