How can a Polysomnography help you to detect a sleep disorder
The most common type of sleep occurs in a special center for studying sleep. You will be asked to arrive about two hours before the time of going to sleep. You sleep in a bed at the center. Many centers have a sleep study rooms that are similar to those of a hotel, so you will be in a comfortable bedroom. The test is often done during the night, so they can study the normal sleep patterns.
The physician will place electrodes on your chin, scalp and the outer edge of the eyelids, which must remain in place while you sleep.
Signals from electrodes are recorded while you are awake with eyes closed and during sleep. Measure the time it takes you to fall asleep, like the time it takes to enter the rapid eye movement sleep.
Monitors are placed on the chest to record your heart rate and breathing. They must also stay in place while you sleep. A specially trained health care directly observe you while you sleep and note any changes in heart rate or breathing. It will measure the number of times that you almost breathe or stop breathing.
In some sleep study centers, a video camera records your movements during sleep.
The polysomnographs laptops can be used at home instead of a specialized sleep are available to help diagnose sleep apnea. You should not use these devices unless you have evaluated a sleep specialist.
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