Frequency and Specificity of Red Blood Cell Alloimmunization in Chilean Transfused Patients
Frequency and Specificity of Red Blood Cell Alloimmunization in Chilean Transfused Patients
Authors
Caamano, Jose
Musante, Evangelina
Contreras, Margarita
Ulloa, Hernan
Reyes, Carolina
Inaipil, Veronica
Saavedra, Nicolas
Guzman Oyarzo, Neftali
Musante, Evangelina
Contreras, Margarita
Ulloa, Hernan
Reyes, Carolina
Inaipil, Veronica
Saavedra, Nicolas
Guzman Oyarzo, Neftali
Authors
Date
Datos de publicaciĆ³n:
TRANSFUSION MEDICINE AND HEMOTHERAPY,Vol.42,4-7,2015
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Abstract
Background: Alloimmunization is an adverse effect of blood transfusions. In Chile, alloimmunization frequency is not established, and for this reason the aim of this study was to investigate the prevalence and specificity of red blood cell (RBC) alloantibodies in Chilean transfused subjects. Methods: Records from 4,716 multi-transfused patients were analyzed. In these patients, antibody screening was carried out prior to cross-matching with a commercially available two-cell panel by the microcolum gel test, and samples with a positive screen were analyzed for the specificity of the alloantibody with a 16-cell identification panel. Results: The incidence of RBC alloimmunization in transfused patients was 1.02% (48/4,716) with a higher prevalence in women (40/48). We detected 52 antibodies, the most frequent specificities identified were anti-E (30.8%), anti-K (26.9%), anti-D (7.7%), and anti-Fy(a) (5.8%). The highest incidence of alloantibodies was observed in cancer and gastroenterology patients. Conclusion: The data demonstrated a low alloimmunization frequency in Chilean transfused patients, principally associated with antibodies anti-E, anti-K, anti-D, and anti-Fy(a).