Hypoglossal nerve stimulation on sleep and level of alertness in OSA: A preliminary study.

Objectives: To quantify the effect of hypoglossal nerve stimulation (HNS), a novel therapy for patients with obstructive sleep apnea, on objective level of alertness (measured with Maintenance of Wakefulness Test [MWT] values) and nocturnal sleep architecture.

Methods: Ten male patients (mean age 52.0 ± 9.