Introduction: Although the transfusion of blood products is a common therapy, it carries risk of transmission of infections, especially hepatitus B virus (HBV) and human immunodeficiency virus (HIV).
Objective: As part of the blood safety initiative, the Pan American Health Organization supported studies to estimate the prevalence of human immunodeficiency virus and hepatitis B virus infection in Colombia.
Materials And Methods: Between February and September 2003, a cross sectional study examined 500 multiply-transfused patients at four hospital centers in the cities of Bogota and Medellin. The serum samples were analyzed by enzyme immunoassay (EIA) using commercial kits.
Results: The seroprevalence of HIV infection was 1.8% (CI 95% 0.5-3.1). The seroprevalence of HBV infection was 18.6% (CI 95% 15.1-22.1). Six risk factors were associated with HIV and HBV infection: (1) receiving more than 48 units of blood or blood components, (2) diagnosis of hemophilia, (3) receiving transfusions for more than one year, (4) receiving whole blood, (5) coinfection with hepatitis C virus and (6) receiving transfusions before 1993.
Conclusions: This is the first epidemiological study with a significant sample size performed in multiply-transfused patients in Colombia. The principal finding was the high prevalence of HBV and HIV infection in patients with diagnosis of hemophilia compared with the other five groups of multiply-transfused patients.
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Immunohematology
June 2024
Immunohematology Reference Laboratory, Biomedical Services, American Red Cross, Douglasville, GA, Georgia.
This review aims to provide a better understanding of when and why red blood cell (RBC) genotyping is applicable in transfusion medicine. Articles published within the last 8 years in peer-reviewed journals were reviewed in a systematic manner. RBC genotyping has many applications in transfusion medicine including predicting a patient's antigen profile when serologic methods cannot be used, such as in a recently transfused patient, in the presence of autoantibody, or when serologic reagents are not available.
View Article and Find Full Text PDFTransfusion
May 2024
Aflac Cancer and Blood Disorders Center, Children's Healthcare of Atlanta, Atlanta, Georgia, USA.
Background: Red blood cell (RBC) antibodies are common in multiply transfused patients with sickle cell disease (SCD). Unlike RBC alloantibodies, the potential of autoantibodies to cause post-transfusion hemolysis may be uncertain. Biotin-labeling provides a direct measurement of red cell survival (RCS) over time, thus can be used to assess the clinical significance of RBC antibodies.
View Article and Find Full Text PDFAsian J Transfus Sci
May 2023
Department of Medical Genetics, Sanjay Gandhi Postgraduate Institute Medical Sciences, Lucknow, Uttar Pradesh, India.
Background: One of the complications of chronic transfusions in thalassemia is the development of red cell alloimmunization.
Aims: The aim of the study was to determine the frequency, specificity of red cell alloantibodies, and factors influencing alloimmunization in multiply transfused thalassemia patients.
Materials And Methods: The study was carried out prospectively on beta-thalassemia patients over 10 months.
Blood Rev
November 2023
Vitalant Medical Affairs, United States of America.
Platelet transfusion refractoriness due to HLA alloimmunization presents a significant medical problem, particularly among multiply transfused patients with hematologic malignancies and those undergoing hematopoietic stem cell transplants. HLA compatible platelet transfusions also impose significant financial burden on these patients. Recently, several novel mechanisms have been described in the development of HLA alloimmunization and platelet transfusion refractoriness.
View Article and Find Full Text PDFBackground: Red blood cell (RBC) transfusion therapy has greatly reduced mortality and morbidity in multiply transfused patients with oncological malignancies. The aim of this study was to underline the necessity of introducing a policy for extended RBC phenotyping of these patients and for the issuing of antigen-matched blood (at least for E antigen).
Methods: Multivariate logistic regression analysis was used to evaluate the associations of age, gender, transfusion history, and various malignancies with the development of red cell alloimmunization.
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