Who refers for sleep study?
A sleep doctor is a medical doctor who has additional special training in sleep medicine. Typically, the doctor is primarily trained in internal medicine, pulmonology or neurology and then completed additional training in sleep medicine.
What does PSG measure?
Polysomnography (PSG) is a study or test done while you’re fully asleep. A doctor will observe you as you sleep, record data about your sleep patterns, and may identify any sleep disorders. During a PSG, the doctor will measure the following to help chart your sleep cycles: brain waves.
How is polysomnography performed?
A variety of sensors are taped to the body parts to record brain waves, eye movements, muscle tone, body movements, heart rhythm, and breathing patterns overnight. No painful equipment (such as needles) is used. The oxygen content of the blood is measured noninvasively with a simple clip on a finger (pulse oximeter).
What if I can’t fall asleep during my sleep study?
If you worry that you won’t be able to sleep enough to successfully complete the test, ask your sleep physician about the possibility of using a sleeping pill. Otherwise, use the distraction techniques to relax and ease yourself into sleep.
What are normal results for sleep study?
Normal saturation is around 95 percent. A desaturation to 86 percent is mild, a reduction to 80 to 85 percent is moderate, and a drop to 79 percent or less is severe.
How many awakenings per night is normal?
In fact, the average number of awakenings hovers around six times per night. As the body cycles through various stages of sleep, including deep sleep and REM sleep, it dips from shallower to deeper states.
How many sleep apneas per night is normal?
That’s because it’s considered normal for everyone to have up to four apneas an hour. It’s also common if your AHIs vary from night to night. For some CPAP users, even higher AHIs are acceptable, depending on the severity of your sleep apnea.
What is a bad sleep apnea score?
Severe obstructive sleep apnea means that your AHI is greater than 30 (more than 30 episodes per hour) Moderate obstructive sleep apnea means that your AHI is between 15 and 30. Mild obstructive sleep apnea means that your AHI is between 5 and 15.