Perioperative bleeding is a common phenomenon among patients undergoing cardiac surgery. The approach to bleeding in cardiac surgery includes both mechanical causes, such as coagulopathy that involves the transfusion of blood products or administration of drugs to manage anticoagulation. The approach to intraoperative surgical bleeding in cardiovascular surgery is affected by the response times to the event of surgical bleeding and the times for obtaining paraclinical results. This makes it necessary to carry out empirical transfusions, and it is necessary to study different transfusion approaches to establish the relevance of algorithms and the convenience of such empirical practices. Studying the proper use of diagnostic tools that allow better decision-making regarding the management of perioperative bleeding in cardiac surgery is imperative. The present work describes the different strategies used as a transfusion guide for the control of intraoperative surgical bleeding, for which a prospective descriptive observational study was carried out where adult patients taken to cardiac surgery at the Fundación Cardio-Infantil with extracorporeal circulation were evaluated. required intraoperative transfusion of platelets, cryoprecipitates or fresh frozen plasma, during the period from September to October 2022