PT  - JOURNAL ARTICLE
AU  - S Ucros Rodríguez
AU  - C Granados
AU  - C Hill
AU  - J A Castro-Rodríguez
AU  - J C Ospina
TI  - Normal values for sleep respiratory poligraphy in children 4-9 years old living at 2,560 meters above sea level
AID  - 10.1183/23120541.sleepandbreathing-2021.4
DP  - 2021 Apr 16
TA  - ERJ Open Research
PG  - 4
VI  - 7
IP  - suppl 7
4099  - http://openres.ersjournals.com/content/7/suppl_7/4.short
4100  - http://openres.ersjournals.com/content/7/suppl_7/4.full
SO  - erjor2021 Apr 16; 7
AB  - 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 obstructive events in healthy children aged 7-16 years; on the other hand, it is known that SpO2 dispersion between individuals becomes wider as altitude increases, a phenomenon that is more marked during sleep. About 17 million Colombians live in regions between 2,500 m to 2,700 m, as well as significant populations in other Latin American countries.Objectives: We aimed this research to knowing polygraphy respiratory sleep parameters in healthy, non-snoring children aged 4 to 9 years living at 2,560 m. Methods: Home respiratory polygraphy was carried out in 32 children healthy non snoring children with a mean age of 6.2 years.Results: The average recorded sleep time was 7.8 hours, the median of apnea-hypopnea index was 9.2/hour, the obstructive apnea-hypopnea index had a median of 8.8/hour and the central apnea a median of 0.4/hour. The median of oxygen desaturation index ≥3% was 11.2 and for oxygen desaturation index ≥4% was 3.9.Conclusions: Normal respiratory sleep parameters in children 4 to 9 years of age are much higher at 2,560 m than those established as normal at sea level. If such guidelines are used, obstructive sleep apnea will be over-diagnosed, resulting in unnecessary adenotonsillectomies, among other interventions.FootnotesCite this article as ERJ Open Research 2021; 7: Suppl. 7, 4.This is an ERS Lung Science Conference abstract. No full-text version is available. Further material to accompany this abstract may be available at www.ers-education.org (ERS member access only).