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  2. Hypopnea - Wikipedia

    en.wikipedia.org/wiki/Hypopnea

    Hypopnea is overly shallow breathing or an abnormally low respiratory rate. Hypopnea is typically defined by a decreased amount of air movement into the lungs and can cause hypoxemia (low levels of oxygen in the blood.) It commonly is due to partial obstruction of the upper airway, but can also have neurological origins in central sleep apnea.

  3. Paroxysmal nocturnal dyspnoea - Wikipedia

    en.wikipedia.org/wiki/Paroxysmal_nocturnal_dyspnoea

    With paroxysmal nocturnal dyspnea specifically, it is felt while sleeping and causes a person to wake up after about 1 to 2 hours of sleep. [ 3 ] More serious forms of dyspnea can be identified through accompanying findings, such as low blood pressure, decreased respiratory rate, altered mental status, hypoxia, cyanosis, stridor, or unstable ...

  4. Obesity hypoventilation syndrome - Wikipedia

    en.wikipedia.org/wiki/Obesity_hypoventilation...

    The second is OHS primarily due to "sleep hypoventilation syndrome"; this requires a rise of CO 2 levels by 10 mmHg (1.3 kPa) after sleep compared to awake measurements and overnight drops in oxygen levels without simultaneous apnea or hypopnea. [4] [11] Overall, 90% of all people with OHS fall into the first category, and 10% in the second. [5]

  5. Sleep-related breathing disorder - Wikipedia

    en.wikipedia.org/wiki/Sleep-related_breathing...

    [6] Central hypoventilation syndrome is caused by certain receptors in the brain failing to recognize changes in carbon dioxide levels during sleep, leading to a low breathing rate and low blood concentration of oxygen. Some of the causes of this disease are sudden onset obesity or spinal cord surgery.

  6. This App May Detect If You Have Dangerously Low Blood Oxygen

    www.aol.com/news/app-may-detect-dangerously-low...

    Photo Illustration by The Daily Beast / Photo by Dennis Wise / University of WashingtonOne day, patients struggling to breathe in bed with a respiratory illness like asthma or COVID-19 may have a ...

  7. Obstructive sleep apnea - Wikipedia

    en.wikipedia.org/wiki/Obstructive_sleep_apnea

    If reductions in ventilation are associated with sufficiently low blood-oxygen levels or with sufficiently high breathing efforts against an obstructed airway, neurological mechanisms may trigger a sudden interruption of sleep, called a neurological arousal. This arousal can cause an individual to gasp for air and awaken. [51]

  8. Central hypoventilation syndrome - Wikipedia

    en.wikipedia.org/wiki/Central_hypoventilation...

    Central hypoventilation syndrome (CHS) is a sleep-related breathing disorder that causes ineffective breathing, apnea, or respiratory arrest during sleep (and during wakefulness in severe cases). CHS can either be congenital (CCHS) or acquired (ACHS) later in life.

  9. Hypoxemia - Wikipedia

    en.wikipedia.org/wiki/Hypoxemia

    Tissue hypoxia refers to low levels of oxygen in the tissues of the body and the term hypoxia is a general term for low levels of oxygen. [2] Hypoxemia is usually caused by pulmonary disease whereas tissue oxygenation requires additionally adequate circulation of blood and perfusion of tissue to meet metabolic demands.