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2. 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]

3. 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.

4. Hypopnea - Wikipedia

   en.wikipedia.org/wiki/Hypopnea

   The apnea-hypopnea index, like the apnea index and hypopnea index, is calculated by dividing the number of apneas and hypopneas by the number of hours of sleep. Another index that is used to measure sleep apnea is the Respiratory Disturbance Index (RDI). The RDI is similar to the AHI, however, RDI also includes respiratory events that do not ...

5. Upper airway resistance syndrome - Wikipedia

   en.wikipedia.org/wiki/Upper_Airway_Resistance...

   Unlike the Apnea-Hypopnea Index, the Respiratory Disturbance Index includes Respiratory Effort-related Arousals (RDI = AHI + RERA Index). [13] In 2005, the definition of sleep apnea was changed to include patients with UARS by using RDI to determine sleep apnea severity. The diagnosis of UARS is based on findings on a polysomnogram. On ...

6. 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]

7. What is ‘Sleep Opportunity’? And How Do I Calculate It? - AOL

   www.aol.com/entertainment/sleep-opportunity...

   It’s a commitment you make every time your alarm goes off: “Don’t worry, body. Tonight, I promise to get eight hours of sleep.” But according to Matthew Walker, director of UC Berkeley’s ...