Abstract
Orthognathic surgery is a treatment modality indicated to correct dentofacial deformities. Postoperative vomiting can be associated with multifactorial origin mainly correlated to patient-related symptoms, anaesthetic and surgical factors. Swallowed blood has been related to one of those multifactorial vomiting causes. This present study was to compare the efficacy of gastric aspiration after bimaxillary orthognathic surgery. A double blind randomised clinical trial was carried out and patients were divided in two groups (n = 44/39 respectively). There was statistically significant difference between the control and study groups in the overall incidence of vomiting (p = 0.031) A stratified analysis by sex between both groups was performed demonstrating a four-fold eduction in the odds for vomiting events independent of patient gender (OR = 0.24; 95% CI 0.07 to 0.72). Gastric aspiration after orthognathic surgery can reduce the effects of postoperative vomiting decreasing inpatient period and, consequently, hospitalisation costs.
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