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Sleep related terms

- R -

  • Radiofrequency (RF)

  • Procedure (also known as Somnoplasty)procedure for treating nasal obstruction, snoring and in some cases, sleep apnea. The procedure uses radiowave energy to reduce snoring and the size of the soft palate.

  • Radiofrequency (RF)

  • Electromagnetic radiation in the frequency range 3 kilohertz (kHz) to 300 gigahertz (GHz); considered to include microwaves and radio waves. Microwaves occupy the spectral region between 300 GHz and 300 MHz, while RF or radio waves include 300 MHz to 3 kHz.

  • RDI

  • Respiratory Disturbance Index, includes all respiratory events per hour.

  • REM Density

  • A function that expresses the frequency of eye movements per unit of time during REM sleep.

  • REM Motor Atonia

  • The active suppression of activity in the antigravity and voluntary muscles during REM sleep. The muscles are completely flaccid and limp.

  • REM onset

  • Designation for commencement of a REM period; used also as a shorthand term for a sleep-onset REM period

  • REM period

  • REM portion of a NREM-REM cycle; early in the night it may be as short as a half-minute, whereas in later cycles longer than an hour.

  • REM rebound or recovery

  • Lengthening and increase in frequency and density of REM periods, which results in an increase in REM percent above base line. REM rebound follows REM deprivation once the inhibitory influence is removed

  • REM sleep (rapid eye movement sleep)

  • Sleep characterized by the active brain waves, flitting motions of the eyes, and weakness of the muscles; most dreaming occurs in this stage, which accounts for about 20% of sleep in adults.

  • REM Sleep Behavior Disorder (RBD)

  • Disorder in which REM motor atonia is partially or completely absent and the individual acts out the ongoing dream. The behavior in REM behavior disorder is often correlates with the ongoing, hallucinatory REM dream episode.

  • REM Sleep Episode

  • REM sleep portion of a NREM-REM sleep cycle. Early in the first sleep period, episodes may be only several minutes in duration. Later REM episodes almost are always longer, 20 to 30 minutes up to an hour.

  • REM Sleep Intrusion

  • Brief interval of REM sleep appearing out of its usual positioning in the NREM-REM sleep cycle.

  • REM Sleep Latency

  • Interval from sleep onset to the first appearance of REM sleep

  • REM Sleep Onset

  • Designation for the first epoch of a REM sleep episode

  • REM Sleep Percent

  • Proportion of total sleep time occupied by REM sleep

  • REM Sleep Rebound

  • Compensatory increase in REM sleep following experimental reduction. Extension of time in, and an increase in frequency and density of REM sleep episodes; usually an increase in REM sleep percent of total sleep time above baseline values

  • REM-Associated Disorders

  • Sleep disturbances that occur in REM sleep.

  • REMS latency

  • The period of time in the sleep period from sleep onset to the first appearance of stage REMS.

  • Respiratory Care Practitioner (RCP)

  • Licensed health care professional specifically trained in cardiopulmonary assessment, diagnostics, therapy administration, and patient education, including the identification and treatment of sleep disorders

  • Restless Legs Syndrome (RLS)

  • Sleep disorder characterized by a deep creeping, or crawling sensation in the legs that tends to occur when an individual is not moving. There is an almost irresistible urge to move the legs; the sensations are relieved by movement.

  • Restlessness (Referring to Quality of Sleep)

  • Persistent or recurrent body movements, arousals, and/or brief awakenings in the course of sleep

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Sleep Related Terms

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