A study published Jan. 9 in The New England Journal of Medicine reports that a surgically implanted upper-airway stimulation device led to significant improvements in objective and subjective measurements of the severity of obstructive sleep apnea. Results show that the median apnea-hypopnea index (AHI) score at 12 months decreased 68 percent, from 29.3 events per hour to 9.0 events per hour. A commentary notes that the industry-sponsored study was uncontrolled and the study population was carefully selected; however, the data suggest that hypoglossal-nerve stimulation may be an option for selected patients with OSA who have difficulties with CPAP therapy.