Central Sleep Apnea: A type of sleep disorder breathing that occurs due to the lack of respiratory signal from certain areas in the brain.
Positive Airway Pressure (PAP): Positive airway pressure (PAP) is a method of treatment that supplies a flow of air through a nasal or oronasal mask into the airway. The most common type of PAP therapy is continuous positive airway pressure (CPAP) which is used to prevent the airway from collapsing and causing obstruction during sleep. In many cases, PAP therapy is the primary and most effective form of treating sleep apnea.
Epworth Sleepiness Scale: A measure of daytime sleepiness. This scale reflects the tendency that an individual has to fall asleep in various situations.
Excessive Daytime Sleepiness: Ongoing sleepiness that is not resolved with enough sleep.
Obstructive Sleep Apnea: A type of sleep disorder breathing that occurs when there is a complete or partial upper airway obstruction during sleep. These periods of obstruction are referred to as respiratory events.
Periodic Limb Movements (PLM): Rhythmic movements of your legs or arms that take place during sleep.
Periodic Limb Movements Index: The number of periodic limb movements per hour of sleep.
Periodic Limb Movements Arousal Index: The number of periodic limb movements during sleep that cause arousals.
Pulse Oximeter: A non-invasive device that clips onto your finger; it is used to measure oxygen level and heart rate using an infrared sensor.
Respiratory Disturbance Index: The number of apneas, hypopneas, and RERAs (respiratory-effort related arousal) per hour of sleep.
Restless Legs Syndrome: A disorder that causes uncomfortable sensations and a strong urge to move your limbs during periods of rest, particularly at night.
Severe Desaturation: An oxygen saturation recording of 80% or less.
Sleep Arousal: Short interruptions that lead you into a lighter phase of sleep that lasts at least 3 seconds.
Sleep Depth: A continuous measure of sleep ranging from 0.0 to 2.5, which determines how deep your sleep is. A value closer to 2.5 indicates wakefulness and value closer to 0.0 indicates the deepest sleep.
Sleep-Related Bruxism: Teeth grinding or jaw clenching during sleep that can cause arousal and lead to morning headaches.
Severities of Sleep Apnea
- Mild Sleep Apnea - RDI 5 to less than 15
- Moderate Sleep Apnea - RDI 15 to less than 30
- Severe Sleep Apnea- RDI 30 or more
Severities of Periodic Limb Movements
- Mild - 5 to less than 25 PLMS per hour of sleep
- Moderate - 25 to less than 50 PLMS per hour of sleep
- Severe - 50 or more PLMS per hour of sleep
Epworth Sleepiness Scale
- Lower Normal Daytime Sleepiness - 0 to 5
- Higher Normal Daytime Sleepiness - 6 to 10
- Mild Excessive Daytime Sleepiness - 11 to 12
- Moderate Excessive Daytime Sleepiness - 13 to 15
- Severe Excessive Daytime Sleepiness - 16 or 24