Objective: Adenotonsillectomy is a well-accepted option for treatment of pediatric obstructive sleep apnea (OSA). This study pretends to evaluate the effectiveness and safety of radiofrequency tonsils reduction in surgical treatment of pediatric OSA.
Study design:Retrospective study evaluating tonsils reduction after surgical treatment of pediatric OSA patients submitted to radiofrequency tonsils reduction and adenoidectomy.
Subjects and methods:A retrospective cohort study, including children diagnosed with: OSA, tonsils hypertrophy (Brodsky scale > 2/2) and apnea-hypopnea index (AHI) > 1 (when polysomnography was made, n=50) who were submitted to radiofrequency tonsils reduction associated with classic adenoidectomy between 2011 and 2013 in CUF Descobertas Hospital (Lisbon). Children with recurrent tonsillitis (meeting criteria for tonsillectomy by AAO-HNS guidelines) were excluded. Outcomes measured: 1) variation in pre and postoperative tonsils size (Brodsky scale), maintenance of roncopathy, maintenance or suspicion of apnea (effectiveness outcomes); 2) postoperative hemorrhage, tonsillitis during postoperative follow up (safety outcomes). Data was collected by consulting clinical charts and by telephonic interviews made by an ENT physician. Statistical analysis was made with STATA 13.Results: A population of 64 children was obtained with 22 months of median follow up. The mean age was 4 yo with 56% males. 81.25% had a preoperative Brodsky scale of at least 3/3, and 64% had moderate or severe degree of OSA. A reduction of at least 2 grades between pre and postoperative Brodsky scale was found in 75.41% and the reduction wasn't associated with the follow up time. Postoperative absence of roncopathy and apnea was reported in 93% and 100% of cases, respectively. Postoperative frequency of hemorrhage was 0% and only 3 patients (4.68%) reported tonsillitis episodes.
Conclusion:In our series, radiofrequency tonsils reduction proved to be an effective and safe technique in tonsils reduction, and therefore, in OSA pediatric surgical treatment.