Frequency of subgroups of the antigen “a” among volunteer donors

Abstract

Introduction:The presence of weak variants of blood type A represents a challenge in the practice of immunohematology for discrepancies in the time of the classification. It is common in blood banks to perform a forward and reverse typing for the purpose of confirming the blood type, but not all the people with a subgroup A2 have developed anti-A1 antibodies. Objective: We present a descriptive, observational and transversal study that establishes the proportion of subgroups of A antigen with the analysis of manual tube technique and monoclonal antibodies like anti-A, anti-A1 (Dolichus biflorus lectins extract) and anti-H. Methods: The analysis involved a total of 818 samples of voluntary blood donor, selected by random sampling, which were initially classified as 737 of Type A, and 81 as Type AB, with a confidence level of 95% (alpha error of 5% and 3% of precision). Results: The present study evaluated the existence of the subgroups A1, A2, A1B, A2B, A intermediate and A intB. Conclusions: It is recommended the identification of subgroups in different types of blood in the laboratory and blood banks.

Avaliação do cuidado às condições crônicas de saúde: a perspectiva do usuário

“…Torna-se necessário refletir sobre as altas taxas de HAS e/ou de DM, que podem ocasionar complicações uma vez que se caracterizam como principais fatores de risco cardiovascular e cerebrovascular (Lopéz-Jaramillo et al, 2014). Entre as patologias cerebrovasculares, destacam-se os Acidentes Vasculares Cerebrais -AVC -(isquêmico e hemorrágico), os quais causam limitações temporárias ou permanentes, afastando a pessoa de suas atividades familiares, sociais e profissionais (Brasil, 2011).…”