Hypoglossal nerve stimulation indications and contraindications
| Indications | Contraindications |
|---|---|
| • Age greater than 22 • Apnea-hypopnea index of 15-65 events per hour (< 25% central or mixed apneic events on polysomnography) • Body mass index < 32 kg/m2 • Failure of or intolerant to positive airway pressure therapy • Airway anatomy appropriate on drug-induced sleep endoscopy (no concentric collapse at retropalatal level) | • > 25% central or mixed apneic events on polysomnography • Anatomic findings that compromise performance (ie, complete concentric collapse) • Pre-existing condition that compromises neurologic control of the upper airway • Inability to operate the system • Pregnancy or planning to become pregnant • Require magnetic resonance imaging (in some cases) |