Sleep Apnea Posted February 12, 2016 by Robert Hooper The occurrence of apnea during sleep. Related Articles: What is Obstructive Sleep ApneaApnea – A Word with Many UsesCauses of Obstructive Sleep Apnea - The Who (Prevalence)The Causes of Obstructive Sleep Apnea - The How and WhyGlossary: Mandibular Advancement Device (MAD)« Back to Glossary IndexRelated Terms:Term: ApneaTerm: Sleep