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  2. What is Sleep Apnea? Symptoms & Treatment Options - AOL

    www.aol.com/sleep-apnea-symptoms-treatment...

    People with low thyroid hormone levels or high levels of insulin or growth hormone are more likely to have sleep apnea. Changes in hormone levels can affect the size and shape of your airway ...

  3. Norepinephrine - Wikipedia

    en.wikipedia.org/wiki/Norepinephrine

    The general function of norepinephrine is to mobilize the brain and body for action. Norepinephrine release is lowest during sleep, rises during wakefulness, and reaches much higher levels during situations of stress or danger, in the so-called fight-or-flight response. In the brain, norepinephrine increases arousal and alertness, promotes ...

  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 apnea - Wikipedia

    en.wikipedia.org/wiki/Sleep_apnea

    Sleep apnea may be categorized as obstructive sleep apnea (OSA), in which breathing is interrupted by a blockage of air flow, central sleep apnea (CSA), in which regular unconscious breath simply stops, or a combination of the two. [1] OSA is the most common form. [1]

  6. Sleep apnea: causes, symptoms, treatments, and how it ... - AOL

    www.aol.com/lifestyle/sleep-apnea-causes...

    Sleep apnea is a serious medical condition that causes interruptions in your sleep leading to a wide range of symptoms. Learn more about the condition and how to get diagnosed.

  7. Sleep apnea impacts brain in ways that may affect cognitive ...

    www.aol.com/sleep-apnea-impacts-brain-ways...

    Lower brain oxygen levels caused by sleep apnea were linked to changes to the white matter, which could lead to cognitive problem, a new study suggests. Sleep apnea impacts brain in ways that may ...

  8. Secondary hypertension - Wikipedia

    en.wikipedia.org/wiki/Secondary_hypertension

    Obstructive sleep apnea (OSA) is one of the most common causes of secondary hypertension. [2] OSA is prevalent in older adults and should be considered in cases of resistant hypertension, hypertension refractory to appropriate aggressive medical therapy. [3]

  9. 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.

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