Normal values for sleep respiratory poligraphy in children 4-9 years old living at 2,560 meters above sea level

Introduction: Obstructive sleep apnea (OSA) syndrome affects 1-10% of all children worldwide. Normal sleep parameters are important in children 4-9 years old because in this group adenotonsillar hypertrophy is a common cause of OSA. Currently, OSA diagnosis is based on sea-level guidelines, without taking into account the altitude at which the populations live; however, it has been shown that at 3,200 m of altitude there is an increase in...