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  2. Obstructive sleep apnea - Wikipedia

    en.wikipedia.org/wiki/Obstructive_sleep_apnea

    Obstructive sleep apnea (OSA) is the most common sleep-related breathing disorder and is characterized by recurrent episodes of complete or partial obstruction of the upper airway leading to reduced or absent breathing during sleep.

  3. Central sleep apnea syndromes: Primary central sleep apnea 327.21 G47.31 Central sleep apnea due to Cheyne-Stokes breathing pattern 768.04 R06.3 Central sleep apnea due to high altitude periodic breathing 327.22 G47.32 Central sleep apnea due to a medical condition, not Cheyne-Stokes 327.27 G47.31 Central sleep apnea due to a drug or substance ...

  4. Respiratory disturbance index - Wikipedia

    en.wikipedia.org/wiki/Respiratory_disturbance_index

    The respiratory disturbance index (RDI)—or respiratory distress Index—is a formula used in reporting polysomnography (sleep study) findings. Like the apnea-hypopnea index (AHI), it reports on respiratory distress events during sleep, but unlike the AHI, it also includes respiratory-effort related arousals (RERAs). [1]

  5. Sleep study - Wikipedia

    en.wikipedia.org/wiki/Sleep_study

    Sleep-related breathing disorders, such as sleep apnea [1] [2] Sleep-related seizure disorders [1] Sleep-related movement disorders, such as periodic limb movement disorder, which is repeated muscle twitching of the feet, legs, or arms during sleep. [2] [1] Sleep studies may be used to diagnose or rule out restless legs syndrome (RLS). However ...

  6. Polysomnography - Wikipedia

    en.wikipedia.org/wiki/Polysomnography

    Polysomnography (PSG) is a multi-parameter type of sleep study [1] and a diagnostic tool in sleep medicine.The test result is called a polysomnogram, also abbreviated PSG.The name is derived from Greek and Latin roots: the Greek πολύς (polus for "many, much", indicating many channels), the Latin somnus ("sleep"), and the Greek γράφειν (graphein, "to write").

  7. Sleep medicine - Wikipedia

    en.wikipedia.org/wiki/Sleep_medicine

    Competence in sleep medicine requires an understanding of a plethora of very diverse disorders, many of which present with similar symptoms such as excessive daytime sleepiness, which, in the absence of volitional sleep deprivation, "is almost inevitably caused by an identifiable and treatable sleep disorder," such as sleep apnea, narcolepsy, idiopathic hypersomnia, Kleine-Levin syndrome ...

  8. Sleep disorder - Wikipedia

    en.wikipedia.org/wiki/Sleep_disorder

    Sleep apnea, obstructive sleep apnea, obstruction of the airway during sleep, causing lack of sufficient deep sleep, often accompanied by snoring. Other forms of sleep apnea are less common. [89] Obstructive sleep apnea (OSA) is a medical disorder that is caused by repetitive collapse of the upper airway (back of the throat) during sleep.

  9. Apnea–hypopnea index - Wikipedia

    en.wikipedia.org/wiki/Apnea–hypopnea_index

    The Apnea–Hypopnea Index or Apnoea–Hypopnoea Index (AHI) is an index used to indicate the severity of sleep apnea. It is represented by the number of apnea and hypopnea events per hour of sleep. Apnea is the complete absence of airflow through your nose and mouth. Hypopnea is a partial collapse of your airway, limiting breathing.

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