Obstructive Sleep Apnea Posted February 12, 2016 by Robert Hooper Sleep apnea caused by obstruction of the upper airway during sleep. Graphic display of Obstructive Apnea over three minutes of sleep. Actual recording of sleep showing Obstructive Sleep Apnea Related Articles: Wuhan VirusHypoglossal Nerve StimulatorWhat is the AHI (Apnea Hypopnea Index)Seeking an EvaluationGlossary: CPAP device« Back to Glossary IndexRelated Terms:Term: Sleep ApneaTerm: Sleep