During sleep, the upper airway muscles, including the tongue, soft palate, and throat muscles, naturally relax to some extent. However, in individuals with Sleep Apnea, this relaxation may be excessive, leading to collapse or narrowing of the airway. This blockage of the airway can prevent oxygenation, causing deprivation to the brain. It may also cause bradycardia, a slowing heart rhythm, or other heart arrhythmias. People with Sleep Apnea often snore loudly.
Individuals with Sleep Apnea often have related health issues such as migraines, hypertension, coronary artery disease, atrial fibrillation, heart failure, and stroke. Sleep apnea can double the risk of developing atrial fibrillation.
It is also associated with metabolic disorders such as type 2 diabetes and obesity. The intermittent periods of low oxygen and fragmented sleep can lead to insulin resistance, excessive daytime sleepiness, impaired concentration, and mood disorders such as depression and anxiety.
You are here tonight to assess possible episodes of Sleep Apnea when you sleep. Your provider has ordered one of 3 sleep tests.
First is a Polysomnogram, during which you are observed for a full night without therapy intervention.
Second, a Split-Night study, where you will be closely monitored for a period at the beginning of the test to establish if you do, in fact, have Sleep Apnea and determine its severity. If you reach the criteria established by your provider and your insurance, you will be set up for a trial of CPAP or similar therapy for the remainder of the study.
Or, third, a Titration Study. This is a full night of CPAP or similar therapy to establish the correct pressure for optimal use at home.
Your Sleep Technologist is highly trained and observes the rules and regulations of the American Academy of Sleep Medicine. Your Technologist's job here is to record, score, and document your sleep. He or she may determine whether to proceed with therapy as indicated by your sleep and respiratory disturbances.
Your Technologist cannot disclose the findings during your study; your provider or Sleep Specialist will share the findings with you.
To track your sleep, your Technologist will use electrodes, patches, and belts to provide signals.
Patches will be applied to your legs to assess movement while you sleep. Two elastic belts, one across your abdomen and one across your chest. This shows the Technologist your breathing effort. The next two patches are to monitor your heart.
A microphone to detect snores may be attached to your neck to monitor snoring.
Much like an oxygen cannula, a nasal cannula is placed in the nose. This delivers nothing, it is just to determine airflow.
Next, electrodes are attached to your face and scalp to help determine what stages of sleep you experience across the night.
Finally, a pulse oximeter is placed on your finger, providing blood oxygen levels and heart rate.
You are monitored by a night vision camera, first for your safety, but it is essential for the technologist to verify your position. You may move freely as you need to. You will be required to spend some time on your back during the recording.
Depending on the lab you visit, you may require assistance with bathroom visits. Simply sit up on the side of the bed and call out as the room sounds are monitored. Your Technologist will go over this with you.
Finally, in the morning, your technologist will provide you with a short questionnaire regarding your sleep. He or she will disconnect you from the equipment, and you are free to go.
As a reminder, your Technologist cannot discuss findings with you.