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: Coronavirus, Obstructive Sleep Apnea and CPAPApnea – A Word with Many UsesRobert G. Hooper MD PublicationsSleep Apnea« Back to Glossary IndexRelated Terms:Term: Sleep ApneaTerm: Sleep