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Reliability of respiratory polygraphy for the diagnosis of sleep apnea-hypopnea syndrome in children
Reliability of respiratory polygraphy for the diagnosis of sleep apnea-hypopnea syndrome in children ARCHIVOS DE BRONCONEUMOLOGIA Alonso Alvarez, M. L., Teran Santos, J., Cordero Guevara, J. A., Navazo Eguia, A. I., Ordax Carbajo, E., Masa Jimenez, J. F., Pelayo, R. 2008; 44 (6): 318-323Abstract
Overnight polysomnography (PSG) is the gold standard diagnostic tool for sleep apnea-hypopnea syndrome (SAHS) in children. The aim of the present study was to evaluate the usefulness of diagnostic respiratory polygraphy in children with clinically suspected SAHS referred to our sleep-disordered breathing clinic.We studied 53 children referred with clinical suspicion of SAHS; 29 (54.7%) were boys and the mean (SD) age was 6.4 (2.9) years. After a medical history was taken and a physical examination performed, patients underwent respiratory polygraphy (Edentec) simultaneously with overnight PSG in the sleep laboratory. The 2 diagnostic tools were compared using statistical analysis.SAHS was defined by an obstructive apnea-hypopnea index (OAHI) of 3 or more in overnight PSG and a respiratory disturbance index (RDI) of 3 or more in respiratory polygraphy. The rate of diagnostic agreement was 84.9%. The difference between the mean OAHI and RDI values was not significant (0.7 +/- 5.4; P=.34). The intraclass correlation coefficient between the OAHI and RDI was 89.4 (95% confidence interval, 82.4-93.7; P< .001). When receiver operating characteristic curves were calculated for the OAHI cutoff points used for the diagnosis of SAHS (> or =1, > or =3, and > or =5), the best RDI cutoff for all 3 OAHI values considered was found to be 4.6. When age strata were considered, in children 6 years or older the best RDI cutoff for the 3 OAHI values was 2.1. In children younger than 6 years the best RDI cutoff was 3.35 for OAHI > or =1 and 5.85 for OAHI > or =3 and > or =5.Respiratory polygraphy in the sleep laboratory is a valid method for the diagnosis of SAHS in children.
View details for Web of Science ID 000256900100006
View details for PubMedID 18559221