The Work We Do While We Sleep, According to Lab Researchers

Find out about the significant role sleep labs play in identifying potentially dangerous sleep disorders, such as sleep apnea.
 
AUSTIN, Texas - June 6, 2024 - PRLog -- It's been 25 years since pioneering sleep researcher Dr. William C. Dement published the influential book "The Promise of Sleep," which examines the connection between a sound night's sleep and good health.

Known as the "father" of sleep medicine, Dement began his career at the University of Chicago where, as a PhD student, he studied the relationship between the sleep stage known as rapid eye movement (REM) and dreaming, publishing his thesis paper "Rapid eye movements during sleep in schizophrenics and non-schizophrenics and their relation to dream recall" in 1957.

At Mount Sinai Hospital in NYC, Dement was an early adopter of using electroencephalogram (EEG) probes to measure and record the brainwaves and eye movements of patients sleeping overnight in the lab. Here, he identified the five stages of sleep and later proposed a severity scale for incidents of sleep apnea, the Apnea Hypopnea Index (AHI).

Modern Sleep Medicine Research And Diagnostic Tools

Since that time, spending the night in a "sleep lab" has become the gold standard for diagnosing sleep disorders.

The American Academy of Sleep Medicine (whose predecessor organization was founded by Dr Dement) has accredited over 2,600 sleep labs in the US and Canada.

Utilizing a diagnostic procedure known as polysomnography (PSG), patients are wired up with a variety of probes to measure their overnight brainwave activity, heartbeat rates, and oxygen levels, as well as sensors to monitor nasal and oral and breathing capacity and muscle movement of the eyelids, chin, chest, and legs.

Loud Snoring Is Often Associated With Undiagnosed Sleep Apnea

One of the important diagnostic outcomes from a sleep lab study is the potential confirmation of sleep apnea, a life-threatening condition where the patient stops breathing multiple times an hour while asleep.

Like high blood pressure, sleep apnea is known as a "silent killer" because many patients are unaware of their condition until given a diagnosis by a medical provider.

The most common form is obstructive sleep apnea (OSA), caused by an airflow blockage (due to conditions such as a collapsing upper airway) and is often associated with noticeable snoring. Less common is a diagnosis of central sleep apnea (CSA), where a fault in the autonomic nervous system interrupts the brain's normal breathing controls.

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