The study aimed to examine how the nasal cycle behaves over time and how it responds to a nasal decongestant.
Ten adult volunteers participated in two sessions, with and without the decongestant xylometazoline, while their nasal measurements were taken every 10 minutes for six hours.
Results showed consistent fluctuations in nasal airflow and resistance, with a notable pattern disruption observed after using the decongestant, indicating that the nasal cycle may not be a universal occurrence and can be altered by nasal spray.