Nonhypersomnolent patients with obstructive sleep apnea.

Area of Science:

• Otolaryngology
• Sleep Medicine
• Pulmonology

Background:

• Snoring was historically viewed as a psychosocial issue, but is now understood as an acoustic event from soft palate vibrations.
• Excessive snoring is a common complaint warranting investigation for underlying sleep disorders.

Purpose of the Study:

• To investigate the prevalence of obstructive sleep apnea (OSA) in patients presenting with excessive snoring but lacking daytime sleepiness.
• To characterize the severity of sleep-disordered breathing in this patient cohort.

Main Methods:

• Twenty patients with excessive snoring, without daytime sleepiness or right heart failure, were enrolled.
• Overnight polysomnography was conducted in a sleep laboratory to monitor respiratory events.

Main Results:

• The apnea rate varied widely, with a mean of 30.0 events per hour.
• Significant obstructive episodes (>1 minute) were observed in 8 patients, and prolonged episodes (>55 seconds) in 3 others.
• Daytime hypersomnolence was absent in many patients with significant obstructive sleep apnea.

Conclusions:

• Excessive snoring can be a primary symptom of obstructive sleep apnea, irrespective of daytime sleepiness.
• Polysomnography is crucial for diagnosing OSA in snorers, even in the absence of typical hypersomnolence.
• The findings challenge the universal presence of hypersomnolence as a cardinal symptom of OSA.