The aim of this study was to evaluate the hemodynamic effects of adenoidectomy under general anesthesia from May 2004 to August 2008. In this retrospective study, 747 patients from 1 to 15 years of age were scheduled underwent general anesthesia with mixture of thiopentone with atracurium, fentanyl and glucose-free solutions, for adenoidectomy surgery compatible with the technique. The following factors were assessed: age, ASA physical status, gender, preoperative, during operation and post-operative pulse rate. A total of 747 adenoidectomy were performed during the study period. One hundred and twenty three cases (16.46%) had bradycardia during adenoidectomy. More population were under 3 years old (49.55%) and males (76.7%). Out of 123 cases that developed bradycardia, 80 cases without need to atropine treatment and only 43 cases that need intravenous Atropine for control of it. Adenoidectomy is the most common operations performed in children under general anesthesia. Adenoidectomy related incidents were the most common cause and were more likely to occur during the maintenance phase of anesthesia, due to the vagal stimulation. Bradycardia due to surgery stimulation happened very early and patients were able to recover from the administration of atropine.
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