Release of interleukin-10 by reinfusion of salvaged blood after knee arthroplasty.

• OBJECTIVES: To determine whether the method of the autotransfusion in association with knee arthroplasty leads to differences in anti-inflammatory cytokines in the patient's circulation. DESIGN AND SETTING: Prospective study in a university hospital. PATIENTS: Twenty-one patients undergoing knee arthroplasty were randomized into two groups assigned to postoperative blood salvage. Seven patients received postoperatively filtered salvaged blood, and seven received centrifuged and washed salvaged blood. Patients with postoperative blood loss less than 400 ml (n=7) did not receive any transfusion. MEASUREMENTS AND RESULTS: Plasma levels of interleukin (IL) 1beta, IL-4, and IL-10 and of polymorphonuclear leukocyte elastase were measured by enzyme-linked immunosorbent assay. The plasma concentration of IL-10 was elevated after reinfusion of salvaged blood in all groups 1 day after surgery (p<0.05). Plasma IL-6, IL-10, and PMN elastase was higher (p<0.01) in all groups 1 day after surgery than preoperatively. There were significantly higher plasma levels 1 min after retransfusion of IL-6 (p<0.01) and IL-10 (p<0.05) in patients receiving filtered blood than in those receiving centrifuged and washed salvaged blood. CONCLUSION: Total knee arthroplasty results in the release of interleukin-10. Transfusion of filtered salvaged blood leads to higher levels of cytokines IL-6 and IL-10 than after transfusion of washed and centrifuged salvaged blood.

Nyckelord

Aged

Aged

80 and over

Arthroplasty

Replacement

Knee

Blood Transfusion

Autologous

Cytokines

blood

Female

Humans

Interleukin-10

blood

Interleukin-6

blood

Leukocyte Elastase

blood

Male

Middle Aged

Prospective Studies

Statistics

Nonparametric

Time Factors

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