Author(s): Pang KP, Woodson BT
Abstract Share this page
Abstract OBJECTIVE: In this study, we assessed the efficacy of a new method (expansion sphincter pharyngoplasty [ESP]) to treat obstructive sleep apnea. STUDY DESIGN: We conducted a prospective, randomized controlled trial. METHODS: Forty-five adults with small tonsils, body mass index less than 30 kg/m2, of Friedman stage II or III, of type I Fujita, and with lateral pharyngeal wall collapse were selected for the study. RESULTS: The mean body mass index was 28.7 kg/m2. The apnea-hypopnea index improved from 44.2 +/- 10.2 to 12.0 +/- 6.6 (P < 0.005) following ESP and from 38.1 +/- 6.46 to 19.6 +/- 7.9 in the uvulopalatopharyngoplasty group (P < 0.005). Lowest oxygen saturation improved from 78.4 +/- 8.52\% to 85.2 +/- 5.1\% in the ESP group (P = 0.003) and from 75.1 +/- 5.9\% to 86.6 +/- 2.2\% in the uvulopalatopharyngoplasty group (P < 0.005). Selecting a threshold of a 50\% reduction in apnea-hypopnea index and apnea-hypopnea index less than 20, success was 82.6\% in ESP compared with 68.1\% in uvulopalatopharyngoplasty (P < 0.05). CONCLUSION/SIGNIFICANCE: The ESP may offer benefits in a selected group of OSA patients.
This article was published in Otolaryngol Head Neck Surg
and referenced in Journal of Sleep Disorders & Therapy