Polysomnography in the diagnosis of narcolepsy


  • The essence of polysomnography
  • Progress in research
  • Evaluation

  • The essence of polysomnography

    Polysomnography in the diagnosis of narcolepsyPolysomnography - is an overnight sleep study. In the study, brain waves are recorded during your sleep, heart activity and breathing. In addition, the recorded eye movements and the movements of the extremities, and muscle tension in the chin area. Sensors attached to the scalp, face, chest and legs. The sensors transmit small amplitude electrical signals in the computer.

    These signals provide an indication of when youasleep or awake during the night. Sensors brain waves and eye movements will show the code you will have a REM sleep, during which dreams usually are. Sensors allow the breath to see how many times during sleep did you have stopped breathing. They also reveal the decrease in airflow and minimal changes in blood oxygen saturation level.

    Sensors attached to the legs, can detectas minimal muscle twitching, and expressed the leg movements that occur during the night. Sensor "clothespin" will be put on your finger to detect changes in blood oxygen saturation level. The sensor monitors the color of your blood. When the oxygen content is reduced, the color changes from bright red to dark red in blood.

    This study is very important for surveypatients with suspected narcolepsy, as they often change, and sleep at night. Usually combined with polysomnography test MSLT (multiple test latency to sleep), controlling seizures sleepiness during the day.

    Progress in research

    Doctors working in the middle of sleep disorders,make every effort to make you feel as free and relaxed. You will be prompted to come to the center in the evening. You will be given some time to adapt to the room where you sleep. Other patients in the room will not.

    During polysomnography you do notYou will experience any discomfort since all the sensors are fixed accurately, and long wires do not hamper movement. Before the study, you will be asked to perform certain steps to verify the quality of the sensors.

    Before the usual waste of time for youto sleep, you can read or watch TV. When you decide that it is time to sleep, the technologist will turn off the light in the room. The camera working in low light level, will allow technologies in the next room to see you. If any of the sensors undock during sleep, the technologist will go into your room and fix the sensor. The technology also will disconnect you from the drive if you need to go to the toilet at night.

    Do not be afraid to fail the test. Almost every person falls asleep during the study. Most people say that sleep a little worse than at home. This does not affect the results. In most cases there is no need to sleep every 8 hours in order to determine the causes of sleep problems.

    In the morning it will again be carried out verification worksensors, then the sensors would be removed. The study will be completed and you will be able to go home. If you sleep less than usual during the study, you may feel a little tired. In any case, you can return to the normal routine of life in the day after the investigation.


    Evaluation of the results of research carried out Technologistand the attending physician. They compare the results of several tests to identify sleep disorders with your complaints and analyzes data. This allows you to diagnose correctly.

    Leave a reply