{"id":894,"date":"2016-02-20T20:32:31","date_gmt":"2016-02-21T02:32:31","guid":{"rendered":"https:\/\/learningneurology.com\/?page_id=894"},"modified":"2018-10-14T21:11:52","modified_gmt":"2018-10-14T21:11:52","slug":"polysomnography","status":"publish","type":"page","link":"https:\/\/learningneurology.com\/diagnostic-tests\/polysomnography\/","title":{"rendered":"Polysomnography"},"content":{"rendered":"<p><strong>Polysomnography PSG a.k.a. sleep study:<\/strong><br \/>\nWhat is recorded:<\/p>\n<ul>\n<li>Eye movements: REM vs Non-REM<\/li>\n<li>EMG (submental or limb): tone<\/li>\n<li>Electroencephalography (EEG): alpha and theta activity<\/li>\n<li>O2 saturation<\/li>\n<li>+\/-Video<\/li>\n<\/ul>\n<p>Normal REM sleep:<\/p>\n<ul>\n<li>REM Rapid eye movements<\/li>\n<li>EMG: minimal to no EMG tone<\/li>\n<li>EEG: mixed alpha and theta activity<\/li>\n<\/ul>\n<p>Terms:<\/p>\n<ul>\n<li>Hypopnea: 10 seconds of decrease in airflow for &lt;10 secons by &gt;50%. Or decrease in airflow &lt;50% with arousal. Or decrease in airflow &lt;50% with 3% desaturation.<\/li>\n<li>Apnea: decrease in airflow =or&gt;80% for 10 seconds.<\/li>\n<li>Obstructive apnea: apnea that occurs with continued respiratory effort.<\/li>\n<li>Central apnea: apnea without continued respiratory effort<\/li>\n<li>Hypoventilation: increased CO2<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Polysomnography PSG a.k.a. sleep study: What is recorded: Eye movements: REM vs Non-REM EMG (submental or limb): tone Electroencephalography (EEG): alpha and theta activity O2 saturation +\/-Video Normal REM sleep: REM Rapid eye movements EMG: minimal to no EMG tone EEG: mixed alpha and theta activity Terms: Hypopnea: 10 seconds of decrease in airflow for &hellip; <a href=\"https:\/\/learningneurology.com\/diagnostic-tests\/polysomnography\/\" class=\"more-link\">Continue reading <span class=\"screen-reader-text\">Polysomnography<\/span> <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"parent":857,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"categories":[33],"tags":[],"jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/P71rnx-eq","jetpack-related-posts":[],"_links":{"self":[{"href":"https:\/\/learningneurology.com\/wp-json\/wp\/v2\/pages\/894"}],"collection":[{"href":"https:\/\/learningneurology.com\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/learningneurology.com\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/learningneurology.com\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/learningneurology.com\/wp-json\/wp\/v2\/comments?post=894"}],"version-history":[{"count":0,"href":"https:\/\/learningneurology.com\/wp-json\/wp\/v2\/pages\/894\/revisions"}],"up":[{"embeddable":true,"href":"https:\/\/learningneurology.com\/wp-json\/wp\/v2\/pages\/857"}],"wp:attachment":[{"href":"https:\/\/learningneurology.com\/wp-json\/wp\/v2\/media?parent=894"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/learningneurology.com\/wp-json\/wp\/v2\/categories?post=894"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/learningneurology.com\/wp-json\/wp\/v2\/tags?post=894"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}