¿Podemos predecir la pérdida de sangre en la cirugía ortognática utilizando parámetros preoperatorios?

Abstract

ObjectivesThe present article studies the possibility of restricting the inclusion of patients undergoing orthognathic surgical procedures in the autologous transfusion protocol with pre-deposited blood using preoperative parameters (age, female gender, more invasive type of surgery), as well as assessing the amount of blood required (number of bags used). Material and MethodsWe conducted a retrospective study comprising 91 orthognathic surgery interventions performed between June 2007 and December 2010 at the La Princesa Hospital – Madrid, which describes, in analytical terms, the management of blood loss and looks for a relationship between various parameters such as age, type of surgery, duration of surgery, pre-, intra- and postoperative haemoglobin values, number of blood bags used and gender. ResultsNo statistically significant correlations were found between the need for transfusion and: older age (p=.23), female gender (p=.11), increased duration of surgery (p=.93), the more invasive type of surgery (p=.284), thus these parameters do not pose an increased risk of bleeding or of being transfused. ConclusionIn our study group, the parameters listed in the preoperative evaluation do not serve the purpose of restricting a group of patients for whom the inclusion in the autotransfusion protocol would be beneficial. The results show the possibility of reducing the amount of blood saved per protocol and indicate a probable over-recomendation of the procedure.