الفهرس 
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Abstract
Obstructive sleep-disordered breathing is a wide range of diseases that evacuate part or complete obstruction of the airway and increased airway resistance during sleep. Sleep-disordered breathing can cause morbidity in children, such as growth failure, neurocognitive and behavioral abnormalities and cardiovascular dysfunction. Children with obstructive sleep-disordered breathing have hypertrophic tonsils that cause obstruction, and tonsillectomy is frequently performed for these patients. This procedure removes the obstruction by resecting all of the tonsillar lymphoid tissue. In the current study, a total of 50 children with obstructive sleep‐disordered breathing secondary adenoid enlargement with tonsillar enlargement were enrolled in a randomized controlled trials. The study was conducted at Department of Otorhinolaryngology in Assiut University Hospitals. It was done in the period between April 2018 and August 2020. Those patients were randomly subdivided into two groups; group A (included 25 patients underwent adenoidectomy with bilateral partial tonsillectomy by using the coblation) and group B (included 25 patients underwent adenoidectomy with classical unilateral tonsillectomy). Both groups showed insignificant differences as regard age, sex, postoperative haemorrhage, time to resume normal diet and tonsillar regrowth. Patients who underwent bilateral partial tonsillectomy had significantly lower intraoperative blood loss, CRIES scale and obstructive sleep apnea-18 quality of life. Tissue regrowth occurred in two patients from those children who underwent unilateral complete tonsillectomy at 6th month. At 12th month postoperatively, 7 (28%) patients from those underwent unilateral complete tonsillectomy had tissue re-growth while only 2 (8%) patients of those underwent bilateral partial tonsillectomy developed tissue regrowth. In conclusion, there are various post-operative advantages to partial tonsillectomy: less pain, better food intake, and a rapid return to a normal diet. Because partial tonsillectomy also avoids exposing the pharyngeal muscles, wound recovery is swifter and less painful. No important blood vessels are damaged, leading to less post-operative bleeding compared to total tonsillectomy. Based on the current study, bilateral partial tonsillectomy is recommended in children with obstructive sleep‐disordered breathing secondary adenoid with tonsillar enlargement over unilateral complete tonsillectomy. Partial bilateral tonsillectomy may be advantageous over tonsillectomy in terms of the short-term measures of lower hemorrhage rate, shorter procedure time, and reduced pain. Further researches are recommended to confirm our results.