The role of nasal resistance in the occurrence of snoring
and obstructive sleep apnea hypopnea syndrome (OSAHS) has been a matter
of speculation for years. In 1988, it was reported in a study of 16
patients that the use of a plastic internal nasal dilator (Nozovent;
Prevancure; Frölunda, Sweden) improved airflow by approximately
25%.1 It was speculated that such a device could
decrease the volume of snoring and the degree of OSAHS severity.