Abstract:
BACKGROUND:The formation of red blood cell (RBC) antibodies could be enhanced by the presence of inflammation caused by prolonged RBC storage, as was shown in animal studies. The low occurrence (<10%) of K-antigen in most populations often enables identification of the K+ RBC unit that triggered anti-K formation and determination of its storage time. This study aims to quantify the association of anti-K formation with RBC storage time. STUDY DESIGN AND METHODS:K- patients who had not been previously transfused and received at least 1 K+ unit between January 2004 and August 2013 were identified. First, the influence of storage time of the K+ units was assessed as mean, maximum, and minimum storage times within one transfusion interval and at various cutoff points for old versus young blood (14, 18, and 21 days). Second, concomitantly transfused K- units were studied within different periods surrounding the K+ unit(s). RESULTS:Twenty-three patients formed anti-K, while 274 patients did not. The adjusted relative risks of anti-K formation for mean, maximum, and minimum storage time (days) ranged from 1.01 to 1.03 (95% confidence interval, 0.96-1.08). When analyzing the association between only "younger" and only "older" K+ units at various cutoff points, no association was found. Similarly, no association was found between storage time of the concomitantly transfused K- units and anti-K formation. CONCLUSION:Within the range of storage times used in normal clinical practice in the Netherlands, no association could be found between RBC storage time and anti-K formation.
journal_name
Transfusionjournal_title
Transfusionauthors
Hogervorst E,Middelburg R,Brand A,van de Watering L,Schonewille Hdoi
10.1111/trf.12974subject
Has Abstractpub_date
2015-06-01 00:00:00pages
1472-7issue
6 Pt 2eissn
0041-1132issn
1537-2995journal_volume
55pub_type
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