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KMID : 0387720140250010034
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Korean Journal of Blood Transfusion
2014 Volume.25 No. 1 p.34 ~ p.40
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Probability of Obtaining Specific Antigen-Negative Blood Units through Antigen Testing in Korean Medical Institutes
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Chung You-Sun
Hong Yun-Ji
Hwang Sang-mee
Kim Taek-Soo
Park Kyoung-Un
Song Jung-Han
Han Kyou-Sup
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Abstract
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Background:When unexpected antibodies are identified, selection for specific antigen-negative blood units is needed in order to ensure transfusion safety. We estimated the number of blood units required for antigen testing to obtain specific antigen-negative units in Korean medical institutes.
Methods: We analyzed cases of selection for specific antigen-negative units for recipients who had antibodies identified in Seoul National University Bundang hospital from January 2008 to December 2010 and cases entered into the KRBP (Korean Rare Blood Program) online database from July 2013 to February 2014 from eight medical institutes.
Results: A total of 559 cases of 266 patients were analyzed. The antigen types requiring two units on average for one specific antigen-negative unit were E, P1, and Lea. Three units on average were required for one Fyb-negative blood unit, four units for one Jka-negative unit, four units for one Jkb-negative unit, 4.5 units for one Leb-negative unit, five units for one C-negative unit, six units for one M-negative unit, and seven units for one S-negative unit. In cases of obtaining specific antigen-negative units for more than one antigen type, three units on average were required for one E, c-negative unit and seven units for one C, e-negative unit. Other multiple antigen-negative units required up to 20 units.
Conclusion: The accurate antigen-negative frequency in the Korean population should be investigated. Following this effort, the number of blood units required for selection of specific antigen-negative units could be predicted and practical measures for obtaining specific antigen-negative blood units could be suggested for Korean medical institutes.
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KEYWORD
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Specific, Antigen, Negative, Blood, Unit, Korea
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