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BRAZILIAN JOURNAL OF EMERGENCY MEDICINE VOLUME 01 / 14-18

for transfusions in the Emergency Department or even concern about alloimmunized patients and about the
to activate massive transfusion protocols can help in the management of group “O” Negative RBC concentrate to
rational use of blood . According to Alimohammadi, 2017 maintain an adequate stock. Moreover, the high number
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the evaluation of parameters such as hypotension, presence of requests and blood products prescribed, compared to
of free fluid on ultrasound, clinical instability of the pelvic the record of only 100 transfusion reactions, alerts us to
ring, age, admission and mechanism of trauma, enabled possible underreporting, suggesting improvements in the
only 6% of 793 patients to be transfused in the emergency. communication system with hospitals to highlight the
importance of hemovigilance.
Although the sensitization rate is relatively low, there are still
potentially fatal risks, especially in emergency transfusions
performed without the completion of pretransfusion testing. REFERENCES
Alloimmunization causes several problems, from delay
o
in obtaining compatible blood to hemolytic transfusion 1. Brasil. Portaria de Consolidação n 5 de 28 de setembro
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reactions . The correct identification of these antibodies de 2017. Consolidação das normas sobre as ações e os
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and requires highly specialized immunohematology teams, da Saúde [Internet]. 2017;926. Available from: http://
especially when dealing with rare antibodies . portalarquivos2.saude.gov.br/images/pdf/2018/marco/29/
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testing. According to Chonat, 2019 , 30% of hemolytic donations and a sustainable blood supply: Lessons learned.
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transfusion reactions can occur under these conditions. Transfusion. 2021;61(1):294–302.
A relevant point observed in our results was the small 5. Medvecz A, Bernard A, Hamilton C, Schuster KM,
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Although the transfusion requests made in the emergency
mode characterize the minority of cases, there is still a

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