• The ability to breath through the nose can be increased above normal by dilating the narrow nasal valve area with the plastic nasal device Nozovent. For 10 nights, 10 patients used Nozovent every other night, and the sleeping partners of the patients judged the snoring sound level using a snoring score. The results showed a significant decrease in snoring, from moderate to slight, when Nozovent was used, or from a barely tolerable to a tolerable noise level. In about 1 night out of 4, when the nostrils were dilated, the sleeping partners did not note any snoring at all. An increased nasal airflow is achieved with less negative intrathoracic pressure, which presumably results in less opportunities for vibrations of the soft palate.
(Arch Otolaryngol Head Neck Surg. 1990;116:462-464)
Petruson B. Snoring Can Be Reduced When the Nasal Airflow Is Increased by the Nasal Dilator Nozovent. Arch Otolaryngol Head Neck Surg. 1990;116(4):462–464. doi:10.1001/archotol.1990.01870040084019
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