Sleep characteristics following adenotonsillectomy in children with obstructive sleep apnea syndrome

Asher Tal, Amir Bar, Alberto Leiberman, Ariel Tarasiuk

Research output: Contribution to journalArticlepeer-review

96 Scopus citations


Objective: To compare the effect of adenotonsillectomy on rapid eye movement (REM)- and non-REM-related respiratory and sleep architecture characteristics in children with obstructive sleep apnea syndrome (OSAS). Study design: This prospective study evaluated 36 children (median age, 6.9 years; range, 1.8 to 12.6 years) with OSAS using polysomnography before and a few months after adenotonsillectomy. Primary outcomes included the number of obstructive apnea and hypopnea and arousals per hour of sleep. Results: At 4.6 months (range, 1 to 16 months) after adenotonsillectomy, there was a significant improvement of all respiratory parameters. The median respiratory disturbance index (RDI) decreased from 4.1/h (range, 0 to 85/h) to 0.9/h (range, 0 to 13/h) after adenotonsillectomy (p < 0.0001). The median non-REM RDI decreased from 3.0/h (range, 0 to 89/h) to 0.4/h (range, 0 to 13/h) [p < 0.001] as compared with REM RDI, which decreased from 7.8/h (range, 0 to 69/h) to 2.3/h (range, 0 to 54/h) after adenotonsillectomy (p < 0.01). Median arousal index decreased following adenotonsillectomy from 17.5/h (range, 7 to 57/h) to 14.0/h (range, 6 to 47/h) [p < 0.03]. Conclusions: Adenotonsillectomy resulted in a greater improvement in non-REM RDI as compared with REM-RDI, and a decrease in the number of arousals.

Original languageEnglish
Pages (from-to)948-953
Number of pages6
Issue number3
StatePublished - 1 Sep 2003


  • Adenotonsillectomy
  • Arousal
  • Rapid eye movement sleep
  • Sleep apnea

ASJC Scopus subject areas

  • Pulmonary and Respiratory Medicine
  • Critical Care and Intensive Care Medicine
  • Cardiology and Cardiovascular Medicine


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