Piedāvājam veikt testu par miega traucējumiem

Ārstēšanās process soli pa solim

Diagnostic devices

 

The “golden standard” of OSA diagnostics comprises polygraphy (PG) and polysomnography (PSG).

  • Polygraphy registers nasal airflow, chest and abdominal respiratory movements, pulse, cardiogram, oxygen concentration in blood, limb movements, position in bed, snoring.

Somnocheck_1.png

  • Polysomnography registers all the above plus electroencephalogram (EEG), electrooculogram (EOG) and electromyogram (EMG) for multiple muscle groups. Video and audio surveillance synchronised with recording is possible.
    Sonocheck_2.png

Both tests are carried out while the patient is being asleep for at least 4 hours. As the comprehensive test or PSG requires EEG, it can be done only at the Sleep Laboratory. Polygraphy can be performed either in the laboratory or at home, using outpatient diagnostic equipment.

The obtained results are analysed by a computer program in order to have a complete picture of what is going on with the patient during sleep. As a result, it is possible to evaluate the sleep structure, efficiency and quality and to detect pathological changes.


This is what the record looks like:

 

Displejs_small.png

 

This is a 4-minute record for an OSAS patient (during sleep). When respiratory flow decreases, the chest and abdomen movements decrease respectively. At that time there is no snoring (snoring episodes occur only when a person tries to inhale). It is evident that as the flow decreases, saturation (oxygen) decreases with that – down to 78% (the norm is within the range from 96% to 100%). To compensate this drop, heart rate (pulse) increases.
Pros and cons of performing the test at home or in laboratory
  Pros Cons

Laboratory
  1. Nurse keeps track of what is going on (guaranteed recording quality)
  2. Medical staff connects the equipment
  3. Recording can be seen throughout the night on the monitor
  1. A new setting can affect the quality of sleep
  2. More expensive
  3. Have to stay overnight in the laboratory
Home
  1. No need to go to the laboratory
  2. Cheaper
  3. Sleep is better in an accustomed setting
  1. Recording quality may be poor
  2. Have to go to pick up the equipment
  3. Need to learn how to put it on
  4. Have to return the equipment on the next day and then come another day to get the results
 

 

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