Polygraphy or Sleep-Related Breathing Disorder Procedure

What is it?

During polygraphy or limited sleep procedure the following organism indicators that help to diagnose sleep-related breathing disorders shall be registered within 8 hours with sensors placed on the body:

  • body’s oxygen supply,
  • heart activity, heart rate,
  • breathing during sleep (mouth-nose, thorax- and stomach breathing)
  • changes in body position (on the back, stomach, right or left side)
  • presence and strength of snoring sound.



Polygraphy allows us to diagnose a patient’s sleep-related breathing disorders as well as their causal links and to assess the severity of sleep-related breathing disorders with concurrent diseases (e.g. obesity, high blood pressure, type II diabetes, etc.)



For a polygraphic test, the sleep centre has: Nox Medical NOX-T3 system.


Carrying out the Procedure

Patients arrive at the sleep centre for the test in the evening, from 19.00. After test formalities, the sleep technologist shall take you to the test room where you will have time to make yourself comfortable. You will be asked to take a shower immediately before the procedure. Before falling asleep, sensors shall be placed on your face and body, and these do not obstruct movements. The test shall be performed at your normal bedtime. The sleep technologist shall remove the sensors from your body in the morning.

You shall find more detailed information on how to prepare for the test from the sleep test checklist.

Cosy test room

Test results and treatment

The doctor shall inform you about the sleep test results during your return visit. The sleep centre administrator shall book you an appointment for this purpose. In addition to test results, the doctor shall introduce you to different treatment options during your return visit.


Register appointment