Those who have sleep apnea symptoms should get tested for the condition to determine whether they have this problem. For this purpose, people can opt to get a home sleep test or visit the sleep lab. A polysomnography – or sleep study – is a multiple component exam that records certain physical activities like eye movement, leg movement, heart rate, and brain waves when the patient is asleep. Later these readings are analyzed by a qualified technician to determine the results. Here is what you must know about sleep study if you are considering getting tested.

When you visit the lab to get assessed for sleep apnea, you will be allocated a separate room for resting comfortably. You will be allowed to carry an overnight bag containing your clothes, a bag, a magazine, a book, and a special pillow if you use one. There will be a central monitoring area near your allocated room from where someone will observe you as you sleep through the night. You will be given a private bathroom and a comfortable sleep environment to ensure your comfort. 

During the sleep study, the technicians will attach you to the machines through some wires. These will record readings like brain waves, oxygen level, eyes, and leg movements. The equipment might look uncomfortable with all the attached wires and straps, but the whole experience won’t be as uneasy as it seems. 

The sleep study features surface electrodes that are attached to your face and scalp. These send the recorded electronic signals to the machine for determining the results. The signal produced by your brain and muscle activity are taken down digitally. Next, you are fixed with belts around your chest and abdomen to measure breathing. Furthermore, a bandage-like oximeter is put on your finger to take oxygen readings in your blood. This whole process of connecting you with the equipment and turning it on takes about 45 to 60 minutes.

EEG- The electroencephalogram test aids in measuring and recording your brain wave activity.

EOG- The exam records muscle activity like face twitches, leg movements, and teeth grinding. EOG also helps find out the REM sleep stage, where intense dreams often occur because of the heightened brain activity.

EKG- During the test, heart rate and heart rhythm are recorded.

Nasal airflow sensor- The device helps in learning about the hindered airflow.

Snore microphones- The device is used to know if the patient is producing a loud wheezing noise that is a symptom of sleep apnea.

Thus, a sleep study is useful for determining if you are suffering from a sleep problem. Patients who suspect rest troubles should take a polysomnography test to find out the true results.