INTERNATIONAL ARCHIVES OF MEDICINE SECTION: NURSING ISSN: 1755-7682 1 2021 Vol. 14 No. 04 doi: 10.3823/2634 © Creative Commons Attribution 4.0 International (CC BY 4.0) License International Medical Publisher http://imedicalpublisher.com Abstract Introduction: Blood transfusion consists of the administration of blood components intravenously in clinical or surgical treatments. In the preoperative period, it is performed with the objective of im- proving tissue oxygenation, as well as promoting hemodynamic and hemostatic balance. Objective: To understand nursing care in the transfusion of blood components to surgical patients in the perioperative period. Method: This is a descriptive and exploratory study with a qualitative approach. Grounded Theory was used, with constant comparative analysis. A total of 18 nurses and 28 nursing technicians from a uni- versity hospital took part in the study. Data were collected between October 2019 and February 2020, through a sociodemographic ques- tionnaire and semi-structured interviews. Results: The study resulted in the central category nursing care du- ring transfusion, which gave rise to the categories: caring for before transfusion; caring for during transfusion; and caring for after trans- fusion, which were discussed according to the standardized nursing methodology. Conclusion: Nursing care is planned and implemented following an ordering of practices in a logical sequence due to the characteristics of the procedure in the perioperative period. Nurses demand indirect care; in contrast, nursing technicians engage in direct patient care. Nursing care in the transfusion of blood components to surgical patients in the perioperative period ORIGINAL Amanda Regina da Silva Góis 1 , Raquel Oliveira Xavier 1 , Rachel Mola 1 , Gerlene Grudka Lira 1 , Brígida Maria Gonçalves de Melo Brandão 2 , Fátima Maria da Silva Abrão 2 1 University of Pernambuco (UPE), Petrolina campus. Petrolina, PE, Brazil. 2 University of Pernambuco (UPE). Recife, PE, Brazil. Contact information: Amanda Regina da Silva Góis. Address: BR 203, Km 2 s/n - Vila Eduardo, Petrolina - PE, 56328-900.  Tel: + 55 87 3866-6468.  amanda.gois@upe.br Keywords Blood Components Transfusion; Perioperative Period; Standardized Nursing Terminology; Grounded Theory.