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  • Title: Reorganization of sleep architecture after surgery for OSAHS.
    Author: Sun X, Yi H, Cao Z, Yin S.
    Journal: Acta Otolaryngol; 2008 Nov; 128(11):1242-7. PubMed ID: 18607962.
    Abstract:
    CONCLUSION: Genioglossus advancement and hyoid suspension (GAHM) plus uvulopalatopharyngoplasty (UPPP) can decrease the apnea hypopnea index (AHI) and arousal index, especially respiratory-related arousals. Correspondingly, sleep architecture is reorganized, which is expressed postoperatively as an increase in slow wave sleep and a decrease in lighter sleep. OBJECTIVE: To explore the reorganization of sleep patterns after GAHM plus UPPP for severe obstructive sleep apnea hypopnea syndrome (OSAHS). PATIENTS AND METHODS: GAHM plus UPPP was performed on 31 patients with severe OSAHS (AHI > 40). The postoperative follow-up was 6 months. RESULTS: The AHI was reduced from 65.93 +/- 23.83 preoperatively to 28.58 +/- 29.11 postoperatively. The arousal index was reduced from 56.00 +/- 18.78 to 41.97 +/- 20.73, and the respiratory arousal index was reduced from 35.44 +/- 21.57 to 22.63 +/- 21.99. No significant change was seen in the spontaneous arousal index (preoperative, 20.56 +/- 12.97; postoperative, 19.34 +/- 10.29). The percentage of REM sleep during the total sleep time (TST) increased from 10.53 +/- 9.13% to 13.92 +/- 6.76%, and the S3 + S4 percentage of TST increased from 3.07 +/- 3.01% to 7.09 +/- 6.83%. Correspondingly, the S1 + S2 percentage of TST decreased from 86.53 +/- 9.28% to 78.89 8.89%.
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