Total sleep deprivation, in which no sleep is obtained for several nights in a row, certainly can be a trigger. Chronically obtaining too few hours of rest may likewise have a cumulative role. The degree of sleep deprivation required to start to experience side effects likely varies for each person depending on their individual sleep needs.
- People with moderate to severe sleep apnea have an up to 15-fold increase of being involved in a traffic accident24 People with sleep apnea are at twice the risk of having a traffic accident25 Treating all US drivers suffering from sleep apnea would save $11.1 billion in collision costs and save 980 lives annually26 Stroke risk.
- Sleep Apnea does create breathing problems, causing you to stop breathing while sleeping. Nonetheless, Sleep Apnea related illness also includes other respiratory problems. A review in the journal Lung found that numerous high-quality studies showed that approximately 20 percent of people with Sleep Apnea syndrome also have chronic obstructive.
The Takeaway
- The Apnea Hypopnea Index (AHI) and oxygen desaturation levels are used to indicate the severity of obstructive sleep apnea.
Apnea Hypopnea Index (AHI)
The AHI is the number of apneas or hypopneas recorded during the study per hour of sleep. It is generally expressed as the number of events per hour. Based on the AHI, the severity of OSA is classified as follows:
- None/Minimal: AHI < 5 per hour
- Mild: AHI ≥ 5, but < 15 per hour
- Moderate: AHI ≥ 15, but < 30 per hour
- Severe: AHI ≥ 30 per hour
Sometimes the Respiratory Disturbance Index (RDI) is used. This can be confusing because the RDI includes not only apneas and hypopneas, but may also include other, more subtle, breathing irregularities. This means a person's RDI can be higher than his or her AHI.
Oxygen Desaturation
Reductions in blood oxygen levels (desaturation) are recorded during polysomnography or limited channel monitoring. At sea level, a normal blood oxygen level (saturation) is usually 96 - 97%. Although there are no generally accepted classifications for severity of oxygen desaturation, reductions to not less than 90% usually are considered mild. Dips into the 80 - 89% range can be considered moderate, and those below 80% are severe.
This content was last reviewed on February 11, 2011
The Takeaway
- The Apnea Hypopnea Index (AHI) and oxygen desaturation levels are used to indicate the severity of obstructive sleep apnea.
Apnea Hypopnea Index (AHI)
The AHI is the number of apneas or hypopneas recorded during the study per hour of sleep. It is generally expressed as the number of events per hour. Based on the AHI, the severity of OSA is classified as follows:
- None/Minimal: AHI < 5 per hour
- Mild: AHI ≥ 5, but < 15 per hour
- Moderate: AHI ≥ 15, but < 30 per hour
- Severe: AHI ≥ 30 per hour
Sometimes the Respiratory Disturbance Index (RDI) is used. This can be confusing because the RDI includes not only apneas and hypopneas, but may also include other, more subtle, breathing irregularities. This means a person's RDI can be higher than his or her AHI. Mindnode 5 5 0 1.
Nosleep 1 1 – Prevent Computer Sleep Apnea Deprivation
Oxygen Desaturation
Nosleep 1 1 – Prevent Computer Sleep Apnea Diagnostic
Reductions in blood oxygen levels (desaturation) are recorded during polysomnography or limited channel monitoring. At sea level, a normal blood oxygen level (saturation) is usually 96 - 97%. Although there are no generally accepted classifications for severity of oxygen desaturation, reductions to not less than 90% usually are considered mild. Dips into the 80 - 89% range can be considered moderate, and those below 80% are severe. Groupspro 3 1 1 download free.
Nosleep 1 1 – Prevent Computer Sleep Apnea Monitor
This content was last reviewed on February 11, 2011