Source:Sleep Medicine
Author(s): Sonia Khirani, Vincent Delord, Jorge Olmo Arroyo, Livio De Sanctis, Annick Frapin, Alessandro Amaddeo, Brigitte Fauroux
ObjectivesPolysomnography (PSG) is the gold standard for the scoring of residual respiratory events during continuous positive airway pressure (CPAP). Studies comparing PSG scoring with automatic scoring by the built-in software of CPAP devices have reported acceptable agreements except for the hypopnea index (HI) in adult patients, but no study has yet been conducted in children. The aim of the present study was to compare the automatic scoring by CPAP device and manual scoring using the software tracings of the CPAP device integrating pulse oximetry (SpO2) with in-lab polygraphy (PG).MethodsConsecutive clinically stable children treated with constant CPAP (ResMed) for at least 1 month and scheduled for a nocturnal PG were recruited. A pulse oximeter was connected to the CPAP device. The PG apnea-hypopnea index (AHIPG), scored according to modified AASM guidelines, was compared with the automatic AHI reported by the CPAP device (AHIA CPAP) and the manual scoring of the AHI on the CPAP software (AHIM CPAP).ResultsFifteen children (1.5-18.6 years) were included. Mean residual AHIPG was 0.9±1.2/hour (0.0-4.6/hour) vs. AHIA CPAP of 3.6±3.6/hour (0.5-14.7/hour) (p<0.001), and AHIM CPAP of 1.2±1.6/hour (0.0-5.1/hour) (p=0.01). Correlation between AHIPG and AHIA CPAP was good (r=0.667; p=0.007), and improved when considering AHIM CPAP (r=0.933; p<0.001). Strong correlations were also observed between the PG apnea index (AI) and HI, and the manually scored AI and HI on CPAP, respectively.ConclusionsManual scoring of respiratory events on the built-in software tracings of CPAP devices integrating SpO2 signal may be helpful. These results have to be confirmed in patients with higher AHI.
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