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Snoring and arousals: a retrospective analysis

V Hoffstein¹, S Mateika, P Hanly

¹Department of Medicine, St. Michael's Hospital, Toronto, Ontario, Canada.

|December 1, 1995

Summary

This study found a weak association between snoring and sleep arousals in patients without sleep apnea or periodic leg movements. Heavy snorers had more arousals, suggesting snoring may impact sleep quality.

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Area of Science:

Sleep Medicine
Respiratory Physiology

Background:

Snoring is a common symptom associated with sleep-disordered breathing.
The relationship between snoring and sleep arousals, independent of sleep apnea, requires further investigation.

Purpose of the Study:

To investigate the association between snoring and sleep arousals in a carefully selected patient cohort.
To determine if snoring is a significant predictor of arousals in individuals without sleep apnea or periodic leg movements.

Main Methods:

Retrospective analysis of 367 patients with objective snoring measurements and no sedating medication, sleep apnea, or periodic leg movements.
Univariate and multivariate regression analyses were performed with arousals as the dependent variable.
Comparison of arousal indices between non-snorers and heavy snorers.

Main Results:

Snoring and mean nocturnal oxygen saturation were weak, significant determinants of arousals, explaining 7% of their variance.
The arousal index was significantly higher in heavy snorers compared to non-snorers (14 ± 8 vs. 10 ± 6).
Patients with the highest arousal quartile exhibited significantly more snoring than those in the lowest quartile.

Conclusions:

A weak but significant association exists between snoring and sleep arousals.
Further prospective studies are warranted to confirm these findings and explore the underlying mechanisms.

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