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Ear, Nose and Throat (ENT) Used to refer to a physician that specializes in disorders of that region; Technically known as an Otorhinolaryngologist
Edema A local or generalized condition due to the build-up of excessive amounts of extra-cellular fluid and characterized by swelling
Electro-encephalogram (EEG) A recording of the electrical activity of the brain by means of electrodes placed on the surface of the head
Electro-oculogram (EOG) A recording of the electrical activity of the eyes; Used to verify sleep changes including REM
Electromyogram (EMG) A recording of electrical activity from the muscular system/muscle activity; Used to assist in the scoring of sleep stages such as REM; Also used to measure muscle activity to help diagnose PLMS
Epoch A measure of duration of the sleep recording typically 20-30 seconds; An epoch corresponds to one page of the polysomnogram
Exacerbation A worsening of a condition, usually acutely
Excessive Daytime Sleepiness or Somnolence (EDS) A subjective report of difficulty in maintaining the awake state, accompanied by a ready entrance into sleep when the individual is sedentary; May be quantitatively measured by use of subjectively defined rating scales of sleepiness
Expiratory Phase (Exhalation) The part of the ventilatory cycle from the beginning of expiratory flow to the beginning of inspiratory flow
Expiratory Positive Airway Pressure (EPAP) The lower pressure used in BiPAP; Helps maintain airway patency and oxygenation
Extubation The removal of a tube that has been inserted into the airway

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