Resumo

STAVARU MARINESCU, Bogdan et al. Can we predict blood loss during orthognatic surgery using pre-operative parameters?. Rev Esp Cirug Oral y Maxilofac [online]. 2013, vol.35, n.3, pp.116-122. ISSN 2173-9161.  https://dx.doi.org/10.1016/j.maxilo.2012.06.001.

Objectives: The 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 Methods: We 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. Results: No 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. Conclusion: In 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.

Palavras-chave : Orthognathic surgery; Autotransfusion; Pre-operative study; Blood saving.

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