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Polysomnography is used to diagnose sleep disorders. Obstructive sleep apnea osa is the most common type of sleep apnea and is characterized by repeated episodes of complete or partial obstructions of the upper airway during sleep despite the effort to breathe and is usually associated with a reduction in blood oxygen saturation in the obstructive sleep apnea hypopnea syndrome the episodes of decreased breathing are called hypopnea and. Pin On Sleep Study Info Ahi results are used to diagnose obstructive sleep apnea. Sleep apnea polysomnography . Show more areas of focus for joseph y. A patient would be required to spend the night at a sleep clinic hooked up to several wires to get an accurate diagnosis. Polysomnography is a sleep study. This test records certain body functions as you sleep or try to sleep. Polysomnography is used to diagnose or rule out many types of sleep disorders including narcolepsy idiopathic hypersomnia periodic limb movement disorder plmd rem behav...