New in OSA

This is music to my ears.

Authors Xu H, Huang W, Yu L, and Chen L. published in Acta Otolaryngolica this week an article entitled 'Sound spectral analysis of snoring sound and site of obstruction in obstructive sleep apnea syndrome.'
(http://www.ncbi.nlm.nih.gov/pubmed/20377505)

They showed objectively what we have known intuitively, that the higher the obstruction the lower the pitch of noise generated. In fact they found that lower obstructions had a greater proportion of >800Hz and >2000Hz first-snore sounds than higher obstructions.

This confirms the way we clinically differentiate stertor and stridor, and might even spawn a new wave of polysomnogram parameters.