How is obstructive sleep apnea diagnosed?

A definitive diagnosis of OSA can only be accomplished by a sleep test called a polysomnogram.

During sleep a polysomnogram machine measures ventilation, gas exchange, cardiac rhythm, the number and length of apneic episodes, assesses oxygen saturation, determines sleep stages, and detects arousals. With new mobile sleep technology, this test can be taken in the comfort of your own home. Most medical insurers will require a patient to undergo a full blown PSG (Polysomnography) study in a sleep lab for primary diagnosis prior to paying for treatment. However, patients with a high insurance deductible or with no medical insurance may prefer the relatively low cost of diagnosis with a mobile PSG device.