Polysomnografie

Polysomnografie is a medical test used to diagnose sleep disorders by recording an individual's physiological activities during sleep. The term "polysomnografie" comes from the Greek words "poly" meaning multiple, "somnus" meaning sleep, and "graphie" meaning writing or recording.

During a polysomnography test, the individual has electrodes attached to their body to record various physiological signals such as brain activity, muscle activity, heart rate, and other bodily functions. These signals are then analyzed and recorded throughout the night, typically during an 8-10 hour period. The test is usually conducted in a sleep laboratory, but home sleep testing equipment is also available in some cases.

The electrodes used in polysomnography can be categorized into three groups: scalp electrodes, which measure brain activity through electroencephalograms (EEGs); electromyography (EMG) electrodes, which record muscle activity; and electrooculography (EOG) electrodes, which monitor eye movement. In addition to these, heart rate, oxygen saturation, and other vital signs are also monitored throughout the night.

The data collected from a polysomnography test is used to identify various sleep disorders, such as insomnia, sleep apnea, restless leg syndrome, and narcolepsy. The test can also help diagnose other conditions that may be affecting an individual's sleep patterns. Polysomnography is considered a gold standard for diagnosing sleep disorders and is commonly used in clinical settings to help physicians develop an accurate diagnosis and treatment plan for their patients.