VERZOGERTE HAMOLYTISCHE TRANSFUSIONSREAKTION DURCH IRREGULARE ANTIKORPER DER SPEZIFITAT ANTI-KIDD(A)

2008 
HISTORY AND CLINICAL FINDINGS: A 56-year-old woman was admitted for replacement of a previously implanted right hip prosthesis which had become loose (no infection). She limped painfully on a shortened leg whose mobility was markedly impaired. At the site of the previous operation the pelvis was lower by about 2 cm; the scar looked well healed. INVESTIGATIONS: Routine laboratory tests were normal except for moderately raised erythrocyte sedimentation rate (18/ 27 mm). There was complete loosening of the prosthesis on X-ray. TREATMENT AND COURSE: Intraoperative bleeding from a branch of the inferior gluteal artery required blood transfusion and further erythrocyte infusions became necessary. Jaundice developed on the 4th postoperative day and 7 days later the direct Coombs test was positive with demonstrable agglutination. Free irregular erythrocytic anti-Kidd(a) (anti-jk[a]) antibodies were found in the serum. To counteract the delayed haemolytic transfusion reaction, exclusively jk(a)-negative erythrocytes were infused. The jaundice gradually disappeared and the bilirubin values became normal. CONCLUSION: Jaundice and signs of haemolysis after erythrocyte transfusion may be due to delayed transfusion reaction and should be investigated with the direct Coombs test.
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