Investigation of Delayed Transfusion Reactions in Sickle Cell Disease Patients Polytransfused in the Brazilian Amazon.

Background: Sickle cell disease (SCD) affects approximately 100,000 people in the United States and millions worldwide, with the highest prevalence of 70% of SCD being found in individuals of African ethnicity. Delayed hemolytic, alloimmunization, and anamnestic transfusion reactions in multiple transfusion patients need to be investigated and managed to avoid a worsening of the patient's clinical status.

Objective: This paper aims to investigate delayed transfusion reactions in SCD patients who were polytransfused in the Brazilian Amazon.

Epidemiological, clinical, and severity characterization of sickle cell disease in a population from the Brazilian Amazon.

Objective/background: Sickle cell disease (SCD) is a chronic inflammatory condition caused by a point mutation in the HBB gene. Here we characterized the clinical presentation of SCD in a population from Amazonas State in northern Brazil, in order to evaluate whether the higher Amerindian ancestry observed in this relatively isolated geographic region would influence the clinical presentation of SCD.

Methods: This was a cross-sectional study characterizing the clinical presentation of SCD patients registered at HEMOAM, Amazon, Brazil.