Print
Email
SaveHealthline's Premium Tools
Healthline Part D Plan Selector
Medicare's drug plans are subsidized by the US federal government and offered through insurers.
Advertisement
Marketplace
|
Insomnia is the inability to obtain an adequate amount or quality of sleep. The difficulty can be in falling asleep, remaining asleep, or both. People with insomnia do not feel refreshed when they wake up. Insomnia is a common symptom affecting mi...
|
|
Insomnia is the inability to obtain an adequate amount or quality of sleep. The difficulty can be in falling asleep, remaining asleep, or both. People with insomnia do not feel refreshed when they wake up. Insomnia is a common symptom affecting mi...
|
 |
Insomnia is a condition that occurs when a person in unable to get long enough or refreshing enough sleep at night. Insomnia can result from an inability to fall asleep, an inability to stay asleep, or waking too early before having gotten enough ...
|
 |
Polysomnography is a sleep study. It measures your sleep cycles and stages by recording brain waves (EEG), electrical activity of muscles, eye movement, breathing rate, blood pressure, blood oxygen saturation, and heart rhythm. A specially trained health care provider will directly observe you while you sleep. There are two states of sleep: non-rapid eye movement (NREM) sleep and rapid eye movement (REM) sleep. REM sleep is associated with dreaming. Your body muscles (except your eyes and lungs) do not move during this stage of sleep. NREM sleep has four stages distinguishable by EEG waves. REM sleep alternates with NREM sleep approximately every 90 minutes. A person with normal sleep usually has four to five cycles of REM and NREM sleep during a night.
|
|
The word polysomnography, derived from the Greek roots " poly, " meaning many, " somno, " meaning sleep, and " graphy " meaning to write, refers to multiple tests performed on patients while they sleep. Polysomnography is an overnight test to evaluate sleep disorders .
|
|
What Is a Sleep Study?Do you often have problems sleeping?
|
 |
Polysomnography is a series of tests performed on patients while they sleep. Polysomnography is a comprehensive overnight procedure that evaluates sleep disorders .
|
 |
Polysomnography is a set of tests performed while a patient sleeps. It is done to diagnose and evaluate sleep disorders , and examines at a minimum brain wave patterns, the movements of both eyes, and the tone of at least one skeletal muscle.
|
|
During a physical examination, a health care provider studies a patient's body to determine the presence or absence of physical problems. A typical physical examination includes: Inspection (looking at the body; Palpation (feeling the body with hands; Auscultation (listening to sounds; Percussion (producing sounds.
|
 |
 |
Home | About | Health Experts | Careers | Site Map | Feedback | Help | Health Tools | Tell a Friend
Advertise | Terms of Use | Privacy Policy
Advertise | Terms of Use | Privacy Policy
Copyright © 2005 - 2008 Healthline Networks, Inc. All rights reserved.