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Why do I need two overnight studies?


If you have been diagnosed with obstructive sleep apnea (stopping breathing during sleep), it is likely that your doctor has ordered continuous positive airway pressure (CPAP) as a treatment for this problem.  During CPAP treatment, a comfortable, flexible mask is worn over the nose and pressurized air is delivered from a bedside machine through a hose and into the mask.  This pressurized air stimulates the throat to stay open so that you can breathe.  A second study is ordered so that the pressure of air necessary to eliminate your episodes of stopping breathing can be adjusted to eliminate these events.  In some cases, these two studies can be combined into one night called a “split night” study.

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I feel sleepy and drowsy during quiet activities