Safety assessment of reinfusion of the drainage separate after primary total knee joint arthroplasty

Abstract

92 patients were examined for determination of possibility and practicability of reinfusion of drainage blood after primary total knee joint arthroplasty with application of high volume local infiltration anesthesia. Blood loss less than 350 ml were determined at 96,6% patents, more than 350 ml at 3,4% patients. In 60% cases the varying hemolysis of drainage blood was identified. In average the concentration of systemic Ropivacaine in the drainage blood was 29,38±6,16 mkg/ml, the level of unconjugated Ropivacaine - 20,86 ±5,73 mkg/ml. Taken into consideration the low blood loss and the high frequency of hemolysis after knee joint arthroplasty the reinfusion of drainage blood is not applicable.