Nasal resistances are useful in identifying children with severe obstructive sleep apnea before polysomnography.

Objective: In this study, we would like to show that anterior rhinometry measurement of nasal resistance would be a simple and useful test to identify severe obstructive sleep apnea (OSA) in a population of children affected by adenotonsillar hypertrophy.

Methods: Seventy-three consecutive children (44 males; mean age 5.4+/-1.