L G Larsson1, A Lindberg, K A Franklin, B Lundbäck. 1. Department of Medicine, Division of Respiratory Medicine and Allergy, Sunderby Central Hospital of Norrbotten, Luleå, Sweden. lars-gunnar.larsson@nll.se
Abstract
BACKGROUND: In previous studies we have found that subjects with bronchitis have a higher prevalence of 'snoring as a problem' than respiratory healthy subjects. OBJECTIVES: We aimed to study whether the high prevalence of snoring among subjects with bronchitis also represents a high prevalence of obstructive sleep apnoea (OSA). METHOD: Subjects in three age groups born 1919-1920, 1934-1935 and 1949-1950 had been identified as bronchitic in an earlier study (n = 471) and without respiratory symptoms (n = 108). Of the 91 subjects reporting snoring to be a problem, 70 were invited to participate in the study. Sleep investigation was performed in 52 of these 70 subjects. RESULTS: 'Snoring as a problem', predicted OSA to a similar degree in both bronchitic and respiratory healthy subjects. The estimated prevalence for obstructive sleep apnoea with an apnoea/hypopnoea index (AHI) 10 as the cut-off point and concomitant daytime symptoms such as daytime sleepiness or liability to nodding off during breaks in activity in the daytime, was 5.4% for bronchitic subjects and 2.3% for respiratory healthy subjects. Apnoea in addition to snoring predicted OSA better than did snoring alone. Age correlated significantly with AHI, and OSA was most common in the middle-aged group, 61-62 years old. CONCLUSION: OSA is twice as common in subjects with chronic bronchitis as in subjects free of pulmonary disease or symptoms. Copyright 2001 S. Karger AG, Basel
BACKGROUND: In previous studies we have found that subjects with bronchitis have a higher prevalence of 'snoring as a problem' than respiratory healthy subjects. OBJECTIVES: We aimed to study whether the high prevalence of snoring among subjects with bronchitis also represents a high prevalence of obstructive sleep apnoea (OSA). METHOD: Subjects in three age groups born 1919-1920, 1934-1935 and 1949-1950 had been identified as bronchitic in an earlier study (n = 471) and without respiratory symptoms (n = 108). Of the 91 subjects reporting snoring to be a problem, 70 were invited to participate in the study. Sleep investigation was performed in 52 of these 70 subjects. RESULTS: 'Snoring as a problem', predicted OSA to a similar degree in both bronchitic and respiratory healthy subjects. The estimated prevalence for obstructive sleep apnoea with an apnoea/hypopnoea index (AHI) 10 as the cut-off point and concomitant daytime symptoms such as daytime sleepiness or liability to nodding off during breaks in activity in the daytime, was 5.4% for bronchitic subjects and 2.3% for respiratory healthy subjects. Apnoea in addition to snoring predicted OSA better than did snoring alone. Age correlated significantly with AHI, and OSA was most common in the middle-aged group, 61-62 years old. CONCLUSION: OSA is twice as common in subjects with chronic bronchitis as in subjects free of pulmonary disease or symptoms. Copyright 2001 S. Karger AG, Basel
Authors: Carlos H Martinez; Victor Kim; Yahong Chen; Ella A Kazerooni; Susan Murray; Gerard J Criner; Jeffrey L Curtis; Elizabeth A Regan; Emily Wan; Craig P Hersh; Edwin K Silverman; James D Crapo; Fernando J Martinez; Meilan K Han Journal: Respir Med Date: 2013-11-15 Impact factor: 3.415
Authors: Ying Y Zhao; Terri Blackwell; Kristine E Ensrud; Katie L Stone; Theodore A Omachi; Susan Redline Journal: Sleep Date: 2016-07-01 Impact factor: 5.849