Monday, July 19, 2010

CPAP-Based Test for OSA Compared to Standard Sleep Study

A certain type of CPAP machine may have a promising future an alternative test for obstructive sleep apnea.

A small study published in the June issue of Sleep & Breathing found a test using the CPAP brand REMstar Pro yielded promising results similar to a manually scored polysomnography. The device was effective in measuring for apnea but not hypopnea.

The study involved 10 subjects who were previously diagnosed with obstructive sleep apnea. Each underwent a sleep study while using the CPAP machine. The first three hours used subtherapeutic CPAP while the second used the previously determined CPAP.

Apnea counts at therapeutic CPAP using were similar for both manually scored PSG and REMstar. The hypopnea index was also similar at baseline. However, at therapeutic levels the scores were significantly different.

The authors suggest these results merit further investigation.

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