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What is Sleep Study?

What is Sleep Study Test (Polysomnography)?

Sleep study test, also known as Polysomnography is performed to diagnose the severity of Sleep Apnea and it is an important step for your Sleep Physician for identifying the appropriate treatment. During Polysomnography various parameters of a patient like heart rate, oxygen level in blood, breathing pattern and limb movement are recorded for better diagnosis. Sleep study test is a painless procedure and is generally performed at a hospital or at home.

Where does a sleep study test take place?

This is the most common kind of sleep apnea, where the airway is blocked completely or in part during sleep. This prevents proper airflow into the lungs, leading to a drop in blood oxygen levels. This signals the brain to wake up and breathe, which is usually heard as a sudden gasp by the patient. Obstructive sleep apnea may be due to a deviated septum, floppy palate, obesity, tonsillitis or basic jaw structure.

How does it work?

Sleep study test usually takes place during your normal sleep time. Before you go to bed, sticky patches with sensors called electrodes are placed on your finger, chest, face, scalp and limbs. Comfortable elastic bands may also be placed around your chest and abdomen to measure your breathing. While this may feel intrusive at first, you'll quickly realize you're able to sleep normally. These sensors help in measuring heart, lung and brain function as well as body position and certain muscle movement while you sleep. Data is recorded by specialized diagnostic equipment while you are sleeping for reviews later. The sleep study test ends when you wake up for the day. It doesn't affect your routine in anyway. You should be ready to function at work, home or wherever your normal routine takes you.

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