Carl J Stepnowsky1, William C Orr, Terence M Davidson. 1. Health Services Research & Development Service, Veterans Affairs San Diego Healthcare System, California 92161, USA. cstepnowsky@ucsd.edu
Abstract
OBJECTIVE: To examine the nightly variability of sleep-disordered breathing (SDB) as measured by the apnea-hypopnea index (AHI). STUDY DESIGN AND SETTING: Retrospective comparison of 3 sequential nights of testing performed in the home in 1091 patients who were referred for diagnostic testing of SDB. RESULTS: The Pearson and Intraclass correlation coefficients ranged between 0.88 and 0.90 for each pair of nights. Based on night 1, approximately 90% of patients were classified consistently with "AHI-high" (the highest AHI measured across the 3 nights) using an AHI threshold of 5. However, 10% were misclassified on night 1 relative to the highest AHI level. CONCLUSION AND SIGNIFICANCE: These findings suggest that (1) 1 night of diagnostic testing for SDB is not sufficient to diagnosis SDB in approximately 1 of every 10 cases, and (2) there is little, if any, significant nightly change in SDB in the home environment. EBM RATING: D.
OBJECTIVE: To examine the nightly variability of sleep-disordered breathing (SDB) as measured by the apnea-hypopnea index (AHI). STUDY DESIGN AND SETTING: Retrospective comparison of 3 sequential nights of testing performed in the home in 1091 patients who were referred for diagnostic testing of SDB. RESULTS: The Pearson and Intraclass correlation coefficients ranged between 0.88 and 0.90 for each pair of nights. Based on night 1, approximately 90% of patients were classified consistently with "AHI-high" (the highest AHI measured across the 3 nights) using an AHI threshold of 5. However, 10% were misclassified on night 1 relative to the highest AHI level. CONCLUSION AND SIGNIFICANCE: These findings suggest that (1) 1 night of diagnostic testing for SDB is not sufficient to diagnosis SDB in approximately 1 of every 10 cases, and (2) there is little, if any, significant nightly change in SDB in the home environment. EBM RATING: D.
Authors: Michelle R Zeidler; Vicente Santiago; Joseph M Dzierzewski; Michael N Mitchell; Silverio Santiago; Jennifer L Martin Journal: J Clin Sleep Med Date: 2015-11-15 Impact factor: 4.062
Authors: Juan F Masa; Jaime Corral; Javier Gomez de Terreros; Joaquin Duran-Cantolla; Marta Cabello; Luis Hernández-Blasco; Carmen Monasterio; Alberto Alonso; Eusebi Chiner; Felipe Aizpuru; Jose Zamorano; Ricardo Cano; Jose M Montserrat; Estefania Garcia-Ledesma; Ricardo Pereira; Laura Cancelo; Angeles Martinez; Lirios Sacristan; Neus Salord; Miguel Carrera; José N Sancho-Chust; Cristina Embid Journal: Sleep Date: 2013-02-01 Impact factor: 5.849