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Bonsignore MR, Mazzuca E, Baiamonte P, Bouckaert B, Verbeke W, Pevernagie DA. REM sleep obstructive sleep apnoea. Eur Respir Rev 2024; 33:230166. [PMID: 38355150 PMCID: PMC10865098 DOI: 10.1183/16000617.0166-2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Accepted: 12/18/2023] [Indexed: 02/16/2024] Open
Abstract
Obstructive sleep apnoea (OSA) can occur in both rapid eye movement (REM) and non-REM sleep or be limited to REM sleep, when the upper airway is most prone to collapse due to REM sleep atonia. Respiratory events are usually longer and more desaturating in REM than in NREM sleep. The prevalence of REM OSA is higher in women than in men and REM OSA usually occurs in the context of mild-moderate OSA based on the apnoea-hypopnoea index calculated for the entire sleep study. Studies have highlighted some detrimental consequences of REM OSA; for example, its frequent association with systemic hypertension and a degree of excessive daytime sleepiness similar to that found in nonsleep-stage-dependent OSA. Moreover, REM OSA could increase cardiometabolic risk. Continuous positive airway pressure (CPAP) treatment aimed at preventing REM OSA should be longer than the 4 h usually considered as good compliance, since REM sleep occurs mostly during the second half of the night. Unfortunately, patients with REM OSA show poor adherence to CPAP. Alternative non-CPAP treatments might be a good choice for REM OSA, but data are lacking. This review summarises the available data on REM OSA and critically examines the weaknesses and strengths of existing literature.
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Affiliation(s)
- Maria R Bonsignore
- PROMISE Department, University of Palermo, Institute for Biomedical Research and Innovation (IRIB), National Research Council (CNR), Palermo, Italy
| | - Emilia Mazzuca
- Department of Respiratory Diseases, Cervello Hospital, AO Villa Sofia-Cervello, Palermo, Italy
| | - Pierpaolo Baiamonte
- Department of Respiratory Diseases, Cervello Hospital, AO Villa Sofia-Cervello, Palermo, Italy
| | - Bernard Bouckaert
- Department of Respiratory Diseases and Sleep Disorders Centre, AZ Delta, Rumbeke, Belgium
| | - Wim Verbeke
- Department of Respiratory Diseases and Sleep Disorders Centre, AZ Delta, Rumbeke, Belgium
| | - Dirk A Pevernagie
- Department of Respiratory Diseases and Sleep Disorders Centre, AZ Delta, Rumbeke, Belgium
- Department Internal Medicine and Paediatrics, Faculty of Medicine and Health Sciences, Ghent University, Gent, Belgium
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2
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Chang JL, Goldberg AN, Alt JA, Alzoubaidi M, Ashbrook L, Auckley D, Ayappa I, Bakhtiar H, Barrera JE, Bartley BL, Billings ME, Boon MS, Bosschieter P, Braverman I, Brodie K, Cabrera-Muffly C, Caesar R, Cahali MB, Cai Y, Cao M, Capasso R, Caples SM, Chahine LM, Chang CP, Chang KW, Chaudhary N, Cheong CSJ, Chowdhuri S, Cistulli PA, Claman D, Collen J, Coughlin KC, Creamer J, Davis EM, Dupuy-McCauley KL, Durr ML, Dutt M, Ali ME, Elkassabany NM, Epstein LJ, Fiala JA, Freedman N, Gill K, Boyd Gillespie M, Golisch L, Gooneratne N, Gottlieb DJ, Green KK, Gulati A, Gurubhagavatula I, Hayward N, Hoff PT, Hoffmann OM, Holfinger SJ, Hsia J, Huntley C, Huoh KC, Huyett P, Inala S, Ishman SL, Jella TK, Jobanputra AM, Johnson AP, Junna MR, Kado JT, Kaffenberger TM, Kapur VK, Kezirian EJ, Khan M, Kirsch DB, Kominsky A, Kryger M, Krystal AD, Kushida CA, Kuzniar TJ, Lam DJ, Lettieri CJ, Lim DC, Lin HC, Liu SY, MacKay SG, Magalang UJ, Malhotra A, Mansukhani MP, Maurer JT, May AM, Mitchell RB, Mokhlesi B, Mullins AE, Nada EM, Naik S, Nokes B, Olson MD, Pack AI, Pang EB, Pang KP, Patil SP, Van de Perck E, Piccirillo JF, Pien GW, Piper AJ, Plawecki A, Quigg M, Ravesloot MJ, Redline S, Rotenberg BW, Ryden A, Sarmiento KF, Sbeih F, Schell AE, Schmickl CN, Schotland HM, Schwab RJ, Seo J, Shah N, Shelgikar AV, Shochat I, Soose RJ, Steele TO, Stephens E, Stepnowsky C, Strohl KP, Sutherland K, Suurna MV, Thaler E, Thapa S, Vanderveken OM, de Vries N, Weaver EM, Weir ID, Wolfe LF, Tucker Woodson B, Won CH, Xu J, Yalamanchi P, Yaremchuk K, Yeghiazarians Y, Yu JL, Zeidler M, Rosen IM. International Consensus Statement on Obstructive Sleep Apnea. Int Forum Allergy Rhinol 2023; 13:1061-1482. [PMID: 36068685 PMCID: PMC10359192 DOI: 10.1002/alr.23079] [Citation(s) in RCA: 62] [Impact Index Per Article: 62.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Revised: 08/12/2022] [Accepted: 08/18/2022] [Indexed: 11/08/2022]
Abstract
BACKGROUND Evaluation and interpretation of the literature on obstructive sleep apnea (OSA) allows for consolidation and determination of the key factors important for clinical management of the adult OSA patient. Toward this goal, an international collaborative of multidisciplinary experts in sleep apnea evaluation and treatment have produced the International Consensus statement on Obstructive Sleep Apnea (ICS:OSA). METHODS Using previously defined methodology, focal topics in OSA were assigned as literature review (LR), evidence-based review (EBR), or evidence-based review with recommendations (EBR-R) formats. Each topic incorporated the available and relevant evidence which was summarized and graded on study quality. Each topic and section underwent iterative review and the ICS:OSA was created and reviewed by all authors for consensus. RESULTS The ICS:OSA addresses OSA syndrome definitions, pathophysiology, epidemiology, risk factors for disease, screening methods, diagnostic testing types, multiple treatment modalities, and effects of OSA treatment on multiple OSA-associated comorbidities. Specific focus on outcomes with positive airway pressure (PAP) and surgical treatments were evaluated. CONCLUSION This review of the literature consolidates the available knowledge and identifies the limitations of the current evidence on OSA. This effort aims to create a resource for OSA evidence-based practice and identify future research needs. Knowledge gaps and research opportunities include improving the metrics of OSA disease, determining the optimal OSA screening paradigms, developing strategies for PAP adherence and longitudinal care, enhancing selection of PAP alternatives and surgery, understanding health risk outcomes, and translating evidence into individualized approaches to therapy.
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Affiliation(s)
- Jolie L. Chang
- University of California, San Francisco, California, USA
| | | | | | | | - Liza Ashbrook
- University of California, San Francisco, California, USA
| | | | - Indu Ayappa
- Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | | | | | | | | | - Maurits S. Boon
- Sidney Kimmel Medical Center at Thomas Jefferson University, Philadelphia, Pennsylvania, USA
| | - Pien Bosschieter
- Academic Centre for Dentistry Amsterdam, Amsterdam, The Netherlands
| | - Itzhak Braverman
- Hillel Yaffe Medical Center, Hadera Technion, Faculty of Medicine, Hadera, Israel
| | - Kara Brodie
- University of California, San Francisco, California, USA
| | | | - Ray Caesar
- Stone Oak Orthodontics, San Antonio, Texas, USA
| | | | - Yi Cai
- University of California, San Francisco, California, USA
| | | | | | | | | | | | | | | | | | - Susmita Chowdhuri
- Wayne State University and John D. Dingell VA Medical Center, Detroit, Michigan, USA
| | - Peter A. Cistulli
- Faculty of Medicine and Health, University of Sydney, Sydney, Australia
| | - David Claman
- University of California, San Francisco, California, USA
| | - Jacob Collen
- Uniformed Services University, Bethesda, Maryland, USA
| | | | | | - Eric M. Davis
- University of Virginia, Charlottesville, Virginia, USA
| | | | | | - Mohan Dutt
- University of Michigan, Ann Arbor, Michigan, USA
| | - Mazen El Ali
- University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | | | | | | | | | - Kirat Gill
- Stanford University, Palo Alto, California, USA
| | | | - Lea Golisch
- University Hospital Mannheim, Ruprecht-Karls-University Heidelberg, Heidelberg, Germany
| | | | | | | | - Arushi Gulati
- University of California, San Francisco, California, USA
| | | | | | - Paul T. Hoff
- University of Michigan, Ann Arbor, Michigan, USA
| | - Oliver M.G. Hoffmann
- University Hospital Mannheim, Ruprecht-Karls-University Heidelberg, Heidelberg, Germany
| | | | - Jennifer Hsia
- University of Minnesota, Minneapolis, Minnesota, USA
| | - Colin Huntley
- Sidney Kimmel Medical Center at Thomas Jefferson University, Philadelphia, Pennsylvania, USA
| | | | | | - Sanjana Inala
- Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | | | | | | | | | | | | | | | | | | | - Meena Khan
- Ohio State University, Columbus, Ohio, USA
| | | | - Alan Kominsky
- Cleveland Clinic Head and Neck Institute, Cleveland, Ohio, USA
| | - Meir Kryger
- Yale School of Medicine, New Haven, Connecticut, USA
| | | | | | | | - Derek J. Lam
- Oregon Health and Science University, Portland, Oregon, USA
| | | | | | | | | | | | | | - Atul Malhotra
- University of California, San Diego, California, USA
| | | | - Joachim T. Maurer
- University Hospital Mannheim, Ruprecht-Karls-University Heidelberg, Heidelberg, Germany
| | - Anna M. May
- Case Western Reserve University, Cleveland, Ohio, USA
| | - Ron B. Mitchell
- University of Texas, Southwestern and Children’s Medical Center Dallas, Texas, USA
| | | | | | | | | | - Brandon Nokes
- University of California, San Diego, California, USA
| | | | - Allan I. Pack
- University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | | | | | | | | | | | | | | | | | - Mark Quigg
- University of Virginia, Charlottesville, Virginia, USA
| | | | - Susan Redline
- Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | | | - Armand Ryden
- Veterans Affairs Greater Los Angeles Healthcare System, Los Angeles, California, USA
| | | | - Firas Sbeih
- Cleveland Clinic Head and Neck Institute, Cleveland, Ohio, USA
| | | | | | | | | | - Jiyeon Seo
- University of California, Los Angeles, California, USA
| | - Neomi Shah
- Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | | | | | - Ryan J. Soose
- University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | | | - Erika Stephens
- University of California, San Francisco, California, USA
| | | | | | | | | | - Erica Thaler
- University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Sritika Thapa
- Yale School of Medicine, New Haven, Connecticut, USA
| | | | - Nico de Vries
- Academic Centre for Dentistry Amsterdam, Amsterdam, The Netherlands
| | | | - Ian D. Weir
- Yale School of Medicine, New Haven, Connecticut, USA
| | | | | | | | - Josie Xu
- University of Toronto, Ontario, Canada
| | | | | | | | | | | | - Ilene M. Rosen
- University of Pennsylvania, Philadelphia, Pennsylvania, USA
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3
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Polysomnographic evaluation of obstructive sleep apnea treatment with fixed pressure CPAP determined by formula. Sleep Breath 2023; 27:145-152. [PMID: 35244842 PMCID: PMC8895082 DOI: 10.1007/s11325-022-02583-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2021] [Revised: 02/02/2022] [Accepted: 02/09/2022] [Indexed: 11/11/2022]
Abstract
PURPOSE The use of continuous positive airway pressure (CPAP) is one of the therapeutic modalities for obstructive sleep apnea (OSA). Manual titration polysomnography and the 90th or 95th percentiles of pressure titrated by automatic CPAP (APAP) are the current standard for determining fixed pressure. Pressures programmed at an arbitrary fixed value, or at preset values based on body mass index (BMI) or by predictive formulas, are presented as alternative forms. This study aimed to evaluate the residual apnea-hypopnea index (r-AHI) in polysomnography with CPAP therapy using pressure determined by formula and assess its feasibility to start treatment. METHODS Patients referred for CPAP therapy were followed up in three outpatient assessments and underwent polysomnography study with pressure CPAP obtained by formula. RESULTS The study sample consisted of 80 patients, 41 women; age 58.6 ± 11.3 years, BMI 34.1 ± 7.5 kg/m2 and cervical circumference 42.0 ± 4.2 cm. Most patients (74%) had severe OSA and Epworth sleepiness scale (ESS) of 12.0 ± 5.7 points. The calculated average pressure was 7.8 ± 2.1 cmH2O. Polysomnography studies showed an r-AHI of 6.1 ± 5.2 events/h and reduction of 84% from baseline AHI. The r-AHI in the REM-supine was 8.4 ± 9.9 events/h. At 30- and 120-day follow-up assessment, adherence to CPAP was 78% and 75% and the ESS score was 6.9 and 6.1 points, respectively. CONCLUSION Results suggest that a formula provides an effective initial pressure in the majority of patients (73%). This simplified approach appears to be a viable alternative, with reductions in waiting lists and time from diagnosis to initiation of therapy.
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4
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Arslan NG. Factors Determining the Need For Bilevel Therapy in Obstructive Sleep Apnea Patients. JOURNAL OF TURKISH SLEEP MEDICINE 2023. [DOI: 10.4274/jtsm.galenos.2022.27136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
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5
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Chiu HY, Liu YY, Shiao TH, Su KC, Chou KT, Chen YM. Clinical Characteristics of Rapid Eye Movement-Related Obstructive Sleep Apnea: An Experience in a Tertiary Medical Center of Taiwan. Nat Sci Sleep 2022; 14:1521-1532. [PMID: 36068886 PMCID: PMC9441168 DOI: 10.2147/nss.s368659] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Accepted: 08/23/2022] [Indexed: 11/23/2022] Open
Abstract
PURPOSE Obstructive sleep apnea (OSA) is characterized by intermittent hypoxemia and sleep fragmentation. While apnea is pronounced with severe desaturation during rapid eye movement (REM) sleep, REM-related OSA is a distinct phenotype of OSA associated with respiratory disturbances predominantly during REM sleep. In this study, we investigated the clinical features of REM-related OSA in Taiwan. PATIENTS AND METHODS All patients diagnosed with OSA in the Taipei Veterans General Hospital from 2015 to 2017 were analyzed retrospectively and classified into REM-related OSA (REM-OSA) group, non-REM related OSA (NREM-OSA) group, and non-stage specific-OSA group. The clinical demographics, OSA-related symptoms, polysomnography results, and medical comorbidities of the three groups were analyzed. RESULTS Among 1331 patients with OSA, 414 (31.1%) were classified as REM-OSA, 808 (60.7%) as NREM-OSA, and 109 (8.2%) as non-stage specific-OSA. After being adjusted for OSA severity, the REM-OSA group was associated with less portion of males, longer desaturation duration, and lower nadir oxygen saturation (SpO2) compared with the NREM-OSA group in mild and moderate OSA. In moderate OSA, the non-stage specific-OSA group featured more OSA severity and more desaturation compared with the other groups. The Epworth Sleepiness Scale scores and the prevalence of comorbidities did not vary among the REM-OSA, NREM-OSA, and non-stage specific-OSA groups. High REM-AHI/NREM-AHI ratio was associated with young age, female gender, high BMI, and low AHI. CONCLUSION OSA patients with high REM-AHI/NREM-AHI ratio are related to young age, female gender, high BMI, and low AHI. Patients with REM-related OSA presented with longer desaturation duration and lower nadir SpO2 after being adjusted for OSA severity.
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Affiliation(s)
- Hwa-Yen Chiu
- Chest Department, Taipei Veterans General Hospital, Taipei, 11217, Taiwan, Republic of China.,Institute of Biophotonics, National Yang Ming Chiao Tung University, Taipei, 112, Taiwan, Republic of China.,Division of Internal Medicine, Hsinchu Branch, Taipei Veterans General Hospital, Hsinchu, 31064, Taiwan, Republic of China.,School of Medicine, Faculty of Medicine, National Yang Ming Chiao Tung University, Taipei, 112, Taiwan, Republic of China
| | - Yung-Yang Liu
- Chest Department, Taipei Veterans General Hospital, Taipei, 11217, Taiwan, Republic of China.,School of Medicine, Faculty of Medicine, National Yang Ming Chiao Tung University, Taipei, 112, Taiwan, Republic of China
| | - Tsu-Hui Shiao
- Chest Department, Taipei Veterans General Hospital, Taipei, 11217, Taiwan, Republic of China.,School of Medicine, Faculty of Medicine, National Yang Ming Chiao Tung University, Taipei, 112, Taiwan, Republic of China
| | - Kang-Cheng Su
- Chest Department, Taipei Veterans General Hospital, Taipei, 11217, Taiwan, Republic of China.,School of Medicine, Faculty of Medicine, National Yang Ming Chiao Tung University, Taipei, 112, Taiwan, Republic of China
| | - Kun-Ta Chou
- Chest Department, Taipei Veterans General Hospital, Taipei, 11217, Taiwan, Republic of China.,School of Medicine, Faculty of Medicine, National Yang Ming Chiao Tung University, Taipei, 112, Taiwan, Republic of China
| | - Yuh-Min Chen
- Chest Department, Taipei Veterans General Hospital, Taipei, 11217, Taiwan, Republic of China.,School of Medicine, Faculty of Medicine, National Yang Ming Chiao Tung University, Taipei, 112, Taiwan, Republic of China
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6
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Rapid eye movement predominant obstructive sleep apnoea: prognostic relevance and clinical approach. Curr Opin Pulm Med 2021; 27:514-522. [PMID: 34620787 DOI: 10.1097/mcp.0000000000000817] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
PURPOSE OF REVIEW Rapid eye movement (REM) obstructive sleep apnoea (OSA) is a stage-specific OSA, in which obstructive events occur primarily during REM sleep. This review discusses REM-OSA definitions, its cardiometabolic correlates, associated comorbidities and treatment, and addresses diagnostic ambiguities and therapeutic pitfalls. RECENT FINDINGS Current evidence indicates that REM-OSA is prevalent among younger age groups and women and is independently associated with cardiometabolic complications, particularly hypertension, metabolic complications such as insulin resistance and metabolic syndrome. However, currently, there is no consensus on the accepted diagnostic criteria for REM-OSA. Available data suggest that adherence to positive airway pressure (PAP) therapy in patients with REM-OSA is suboptimal. Moreover, the currently accepted criteria for good adherence to PAP therapy of 4 h/night, 70% of the days may not be suitable for REM-OSA, as it will not cover most of the REM sleep periods. In addition, further research is needed to assess the impact of REM-OSA treatment on cardiometabolic outcomes. SUMMARY Patients with REM-OSA are at an increased risk of cardiometabolic complications. A high index of suspicion is needed to diagnose this disorder, and close follow-up is required to enhance adherence to therapy.
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7
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Massie F, Van Pee B, Vits S, Verbraecken J, Bergmann J. Phenotyping REM OSA by means of peripheral arterial tone-based home sleep apnea testing and polysomnography: A critical assessment of the sensitivity and specificity of both methods. J Sleep Res 2021; 31:e13481. [PMID: 34510622 DOI: 10.1111/jsr.13481] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Revised: 08/03/2021] [Accepted: 08/25/2021] [Indexed: 12/22/2022]
Abstract
The clinical relevance of rapid eye movement sleep-related obstructive sleep apnea (REM OSA) is supported by its associated adverse health outcomes and impact on optimal treatment strategies. To date, no assessment of REM OSA phenotyping performance has been conducted for any type of sleep testing technology. The objective of this study was to assess this for polysomnography and peripheral arterial tone-based home sleep apnea testing (PAT HSAT). In a dataset comprising 261 participants, the sensitivity and specificity of the agreement on REM OSA phenotyping was assessed for two independent scorings of polysomnography and a synchronously administered PAT HSAT. The sensitivity and specificity of REM OSA phenotyping were 0.87 and 0.89, respectively, for the polysomnography inter-scorer comparison, and 0.68 and 0.97 for the PAT HSAT on a single-night basis, using the conventional minimum required rapid eye movement sleep time of 30 min. Polysomnography-based REM OSA phenotyping was found to be sensitive and specific even for a single-night testing protocol. Peripheral arterial tone-based REM OSA phenotyping showed a lower sensitivity but a slightly higher specificity compared to polysomnography. In order to increase performance and conclusiveness of peripheral arterial tone-based REM OSA phenotyping, a multi-night protocol of 2-5 nights could be considered. Finally, the minimum required rapid eye movement sleep time could be lowered from the conventional 30 min to 15 min without significantly lowering REM OSA phenotyping sensitivity and specificity, while increasing the level of phenotyping conclusiveness.
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Affiliation(s)
- Frederik Massie
- Natural Interaction Lab, Department of Engineering, University of Oxford, Oxford, UK
| | - Bart Van Pee
- Natural Interaction Lab, Department of Engineering, University of Oxford, Oxford, UK
| | - Steven Vits
- Faculty of Medicine and Health Sciences, University of Antwerp, Wilrijk, Belgium
| | - Johan Verbraecken
- Multidisciplinary Sleep Disorder Center, Antwerp University Hospital, Edegem, Antwerp, Belgium.,Faculty of Medicine and Health Sciences, University of Antwerp, Wilrijk, Belgium
| | - Jeroen Bergmann
- Natural Interaction Lab, Department of Engineering, University of Oxford, Oxford, UK
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8
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Rishi AR, Rishi MA. Rapid eye movement related obstructive sleep apnea: Where do we stand? Respir Investig 2021; 59:589-595. [PMID: 34246581 DOI: 10.1016/j.resinv.2021.06.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Revised: 06/04/2021] [Accepted: 06/08/2021] [Indexed: 11/28/2022]
Abstract
Rapid eye movement (REM) related obstructive sleep apnea (OSA) is defined by the presence of episodes of apnea or hypopnea predominantly or exclusively during REM sleep. Epidemiology of this disorder shows a complex interaction with age, sex, and body mass index. The prevalence is variable and depends on the criteria used to define this disorder. Moreover, the clinical significance of this entity remains poorly defined. However, episodes of apnea or hypopnea encountered during REM sleep are longer and are associated with a more profound drop in oxygen saturation than non-REM sleep. Likewise, this disorder may be independently associated with hypertension and poor glycemic control. More importantly, positive airway pressure therapy as currently prescribed may not treat the majority of apnea episodes during REM sleep. The treatment is further complicated by the different definitions used for the diagnosis of this disorder and the lack of consensus if patients with this diagnosis should be treated if their overall apnea-hypopnea index does not meet the threshold for the clinical diagnosis of OSA. The definition and treatment used for the diagnosis and management of REM-related OSA needs to be standardized. Moreover, a consensus needs to be developed as to whether patients with this disorder should be treated if their overall apnea-hypopnea index does not meet the threshold for the clinical diagnosis of OSA. Further investigation may help answer if this disorder is independently associated with neurocognitive and cardiometabolic adverse outcomes and help guide the therapeutic approach.
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Affiliation(s)
| | - Muhammad Adeel Rishi
- Department of Pulmonary, Critical Care and Sleep Medicine, Mayo Clinic, Eau Claire, WI, USA
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9
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Fitzpatrick J, Kerns ES, Kim ED, Sozio SM, Jaar BG, Estrella MM, Tereshchenko LG, Monroy-Trujillo JM, Parekh RS, Bourjeily G. Functional outcomes of sleep predict cardiovascular intermediary outcomes and all-cause mortality in incident hemodialysis patients. J Clin Sleep Med 2021; 17:1707-1715. [PMID: 33779539 DOI: 10.5664/jcsm.9304] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
STUDY OBJECTIVES Patients with end-stage kidney disease (ESKD) commonly experience sleep disturbances. Sleep disturbance has been inconsistently associated with mortality risk in hemodialysis patients, but the burden of symptoms from sleep disturbances has emerged as a marker that may shed light on these discrepancies and guide treatment decisions. This study examines whether functional outcomes of sleep are associated with increased risk of intermediary CV outcomes or mortality among adults initiating hemodialysis. METHODS In 228 participants enrolled in the Predictors of Arrhythmic and Cardiovascular risk in ESRD (PACE) study, the Functional Outcomes of Sleep Questionnaire-10 (FOSQ-10), which assesses functional outcomes of daytime sleepiness, was administered within 6 months of enrollment. Intermediary CV outcomes included QTc [ms], heart rate variance [ms²], left ventricular mass index [g/m², LVMI], and left ventricular hypertrophy [LVH]. The association of FOSQ-10 score with all-cause mortality was examined using proportional hazards regression. Results: Mean age was 55 years, median BMI was 28 kg/m² (IQR 24,33), with 70% African Americans. Median FOSQ-10 score was 19.7 (IQR: 17.1,20.0). A 10% lower FOSQ-10 score was associated with increased mortality risk (HR 1.09, 95%CI 1.01-1.18). Lower FOSQ-10 scores were associated with longer QTc duration and lower heart rate variance, but not LVMI or LVH. CONCLUSIONS In adults initiating dialysis, sleep-related functional impairment is common and is associated with intermediary cardiovascular disease measures and increased mortality risk. Future studies should assess the impact of screening for sleep disturbances in ESKD patients to identify individuals at increased risk for cardiovascular complications and death.
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Affiliation(s)
- Jessica Fitzpatrick
- Child Health Evaluative Sciences, Research Institute, The Hospital for Sick Children, Toronto, Ontario, Canada
| | - Eric S Kerns
- Lahey Hospital and Medical Center, Burlington, MA
| | - Esther D Kim
- Department of Epidemiology, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD.,Welch Center for Prevention, Epidemiology, and Clinical Research, Baltimore, MD
| | - Stephen M Sozio
- Welch Center for Prevention, Epidemiology, and Clinical Research, Baltimore, MD.,Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD
| | - Bernard G Jaar
- Department of Epidemiology, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD.,Welch Center for Prevention, Epidemiology, and Clinical Research, Baltimore, MD.,Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD.,Nephrology Center of Maryland, Baltimore, MD
| | - Michelle M Estrella
- Kidney Health Research Collaborative, Department of Medicine, University of California, San Francisco and Department of Medicine, San Francisco VA Health Care System, San Francisco, CA
| | - Larisa G Tereshchenko
- Knight Cardiovascular Institute, Department of Medicine, Oregon Health and Science University, Portland, OR
| | | | - Rulan S Parekh
- Child Health Evaluative Sciences, Research Institute, The Hospital for Sick Children, Toronto, Ontario, Canada.,Department of Epidemiology, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD.,Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD.,Division of Nephrology, Department of Pediatrics and Medicine, The Hospital for Sick Children, University Health Network and University of Toronto, Ontario, Canada
| | - Ghada Bourjeily
- Department of Medicine, The Miriam Hospital, Warren Alpert Medical School of Brown University, Providence, RI
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10
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Natural History of Sleep-disordered Breathing during Rapid Eye Movement Sleep. Relevance for Incident Cardiovascular Disease. Ann Am Thorac Soc 2021; 17:614-620. [PMID: 32011165 DOI: 10.1513/annalsats.201907-524oc] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
Rationale: Sleep-disordered breathing (SDB) occurring primarily during rapid eye movement (REM) sleep is a common clinical problem. The natural history of REM-related SDB and the associated cardiovascular sequelae of disease progression remain to be determined.Objectives: The objective of the current study was to describe the natural history of REM-related SDB, ascertain predictors of progression, and determine whether the evolution of REM-related SDB into non-REM (NREM) sleep is associated with incident cardiovascular events.Methods: Participants from the Sleep Heart Health Study with a baseline NREM apnea-hypopnea index (NREM-AHI) of <5 events/h and data from a follow-up sleep study along with information on incident cardiovascular disease were included in the study. Bivariate logistic regression was used to jointly model the predictors of disease progression based on the presence or absence of SDB during NREM and REM sleep using a cut-point of 5 events/h. Explanatory variables such as age, race, body mass index (BMI), change in BMI, and baseline REM-AHI were considered. Proportional hazards regression was then used to establish whether the development of SDB during NREM sleep was associated with incident cardiovascular disease.Results: The majority of the 1,908 participants included in the study did not develop SDB during NREM sleep. The likelihood of progression of SDB into NREM sleep did increase with higher baseline REM-AHI. BMI and an increase in BMI predicted progression of SDB in both NREM and REM sleep in men but not in women. There was a strong interdependence between developing a NREM-AHI of ≥5 events/h and worsening REM-AHI at follow-up with odds ratios of 6.01 and 4.47, in women and men, respectively. Moreover, the relative risk for incident cardiovascular events among those who developed a NREM-AHI of ≥5 events/h at the follow-up visit was elevated only in women with REM-related SDB at baseline.Conclusions: SDB during REM sleep is a relatively stable condition and does not progress in the majority of individuals. Progression of SDB into NREM sleep is associated with sex, weight, and age. SDB during REM and NREM sleep tends to develop concurrently. Finally, the development of SDB during NREM sleep is associated with incident cardiovascular events, but only in women with REM-related SDB at baseline.
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CPAP treatment in REM-related obstructive sleep apnea: a distinct clinical phenotype of sleep disordered breathing. Sleep Breath 2021; 25:1875-1884. [PMID: 33486668 DOI: 10.1007/s11325-021-02300-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Revised: 01/03/2021] [Accepted: 01/15/2021] [Indexed: 12/16/2022]
Abstract
PURPOSE REM-related obstructive sleep apnea (REM-OSA), as defined using revised apnea-hypopnea index (AHI) criteria, might represent a specific OSA phenotype. However, there is a lack of data on outcomes of treatment in this population. This study evaluated the effects of CPAP treatment over 12 months on clinical outcomes for patients with the polysomnography phenotype of REM-OSA. METHODS We conducted a prospective observational study with the following inclusion criteria: subjective sleepiness and diagnostic polysomnography demonstrating AHIREM≥15 events/h, AHINREM<5 events/h, and ≥ 30 min of REM sleep. Clinical outcomes assessed included Epworth Sleepiness Scale (ESS), psychomotor vigilanc test reaction time (PVT-RT), and CPAP adherence at baseline, 1, 3, 6, and 12 months; Functional Outcomes of Sleep Questionnaire (FOSQ) and Depression Anxiety Stress Scales (DASS-21) at baseline, 1, 3 and 12 months. The reason is the first 3 outcomes (ESS, PVT, adherence) were assessed at baseline, 1, 3, 6, and 12 months, while the next 2 outcomes (FOSQ, DASS) were assessed at baseline, 1, 3, and 12 months. The edited version is not as clear in separating these outcomes into 2 groups; Functional Outcomes of Sleep Questionnaire (FOSQ); and Depression Anxiety Stress Scales (DASS-21) at baseline, 1, 3, and 12 months. Linear mixed effects models were used to investigate the joint effects of time and average CPAP adherence on our outcomes of interest. RESULTS Twenty participants completed a minimum of 1 month of CPAP treatment and were included for analysis. During the trial, 8 participants discontinued CPAP (4 before 3 months, 1 before 6 months, 3 before 12 months), and 19 participants completed 12 months of treatment. Baseline ESS was elevated at 12.6 units. Average CPAP usage for all 27 participants over 12 months was 2.9 ± 2.4 h. There was a significant decrease in ESS and increase in FOSQ at all time points, and the decrease in ESS was only seen in the CPAP-adherent subgroup. Decreases in DASS-21 and PVT-RT were not sustained. CONCLUSIONS CPAP treatment in sleepy patients with moderate to severe REM-OSA is associated with reduced sleepiness and improved quality of life. TRIAL REGISTRATION The trial was registered in the Australian New Zealand Clinical Trials Registry: ACTRN12620000576921, 18/05/2020 (retrospectively registered).
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12
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Freedman N. Treatment of Obstructive Sleep Apnea: Choosing the Best Positive Airway Pressure Device. Sleep Med Clin 2020; 15:205-218. [PMID: 32386695 DOI: 10.1016/j.jsmc.2020.02.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Positive airway pressure (PAP) remains primary therapy for most patients with obstructive sleep apnea (OSA). CPAP, APAP, and BPAP are all reasonable therapies that can be used for patients with uncomplicated OSA across the spectrum of disease severity. BPAP should be considered for patients who are nonadherent to CPAP or APAP therapy because of pressure intolerance. Several additional factors should be considered when choosing the type of PAP device for a given patient, including associated symptoms and comorbid medical problems, cost, access to online data management and patient portals, and the portability for the device for patients who travel frequently.
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Affiliation(s)
- Neil Freedman
- Pulmonary, Critical Care, Allergy and Immunology, Department of Medicine, North Shore University Health System, 2650 Ridge Avenue, Evanston, IL 60201, USA.
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13
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Insomnia as a Symptom of Rapid Eye Movement-Related Obstructive Sleep Apnea. J Clin Med 2020; 9:jcm9061821. [PMID: 32545253 PMCID: PMC7356215 DOI: 10.3390/jcm9061821] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2020] [Revised: 06/09/2020] [Accepted: 06/10/2020] [Indexed: 12/26/2022] Open
Abstract
Rapid eye movement (REM)-related obstructive sleep apnea (OSA), a polysomnographic phenotype that affects 12–36% of OSA patients, is defined by apnea and hypopnea events that predominantly or exclusively occur during REM sleep. Recent studies indicated that REM-related OSA was associated with the development of nocturnal non-dipping of systolic and diastolic blood pressure, metabolic syndrome, diabetes, and depressive symptoms. However, to date, the association between REM-related OSA and insomnia still remains unclear. We investigated whether there was a difference between REM- and non-REM-related OSA in terms of insomnia-related sleep disturbance as measured by the Pittsburgh Sleep Quality Index (PSQI) in 1736 patients with OSA. REM-related OSA showed a significant association with increased PSQI in all adjusted models. In the subgroup analysis, the coefficients of all models were higher in female than in male patients with REM-related OSA. Insomnia should be considered an important complaint in patients with REM-related OSA, and its indicators, such as the PSQI, should be included in routine diagnostic testing.
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14
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Oktay Arslan B, Demirhan E, Uçar Hoşgör ZZ. Laryngeal Botulinum Toxin Injection: Can It Be a Cause of Obstructive Sleep Apnea as an Adverse Effect? J Voice 2020; 36:119-122. [PMID: 32482493 DOI: 10.1016/j.jvoice.2020.04.034] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Revised: 04/22/2020] [Accepted: 04/23/2020] [Indexed: 12/12/2022]
Abstract
Spasmodic dysphonia is a chronic voice disorder that is characterized by involuntary spasms of the laryngeal muscles during speech production. Botulinum toxin injection into to the laryngeal muscles is the most common and effective treatment of choice for symptoms of spasmodic dysphonia. We present a 44-year-old man with adductor spasmodic dysphonia who was diagnosed as having upper airway obstruction in a polysomnographic examination during sleep after a botulinum toxin injection.
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Affiliation(s)
- Burcu Oktay Arslan
- Department of Chest Medicine, Sleep Disorders Center, University of Health Science, Dr. Suat Seren Chest Diseases and Chest Surgery Training and Research Hospital, Izmir, Turkey.
| | - Erhan Demirhan
- Department of Otorhinolaryngology, University of Health Science, Tepecik Training and Research Hospital, Izmir, Turkey
| | - Zeynep Zeren Uçar Hoşgör
- Department of Chest Medicine, Sleep Disorders Center, University of Health Science, Dr. Suat Seren Chest Diseases and Chest Surgery Training and Research Hospital, Izmir, Turkey
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15
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An Australasian Commentary on the AASM Manual for the Scoring of Sleep and Associated Events. Sleep Biol Rhythms 2020. [DOI: 10.1007/s41105-020-00259-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
AbstractThe aim of this document was to provide a commentary on the AASM Manual for Scoring of Sleep and Associated Events in an Australasian context. A panel of Australasian sleep professionals developed the commentary. Each member was tasked with reviewing an assigned section and reporting back with potential AASM Manual clarifications and alterations. These suggestions were evaluated by the panel and ultimately resulted in the recommendations in this document. The panel recognised that the AASM manual significantly advanced the standardisation of polysomnography recording, analysis, and reporting; however, there were sections of the AASM Manual where the panel determined there were clarifications, additions, or alterations required. Some of the key panel recommendations included: (1) advice to exclude arousals in awake epochs in the arousal index, (2) recommendation of a single hypopnoea definition, as well as single options for EEG and EOG placements, (3) a minimum duration for the central and mixed components of a mixed apnoea, (4) the addition of a baseline definition for scoring respiratory events, (5) the addition of criteria for defining oxygen desaturation, and (6) advice change so that the scoring and reporting of respiratory effort-related arousals (RERAs) and snoring is ‘recommended’ rather than ‘optional’. While it is anticipated that the recommendations will improve standardisation across Australasian sleep services many of the recommendations are also relevant in a global setting and should be considered for inclusion in future updates of the AASM Manual.
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Djonlagic I, Guo M, Igue M, Malhotra A, Stickgold R. REM-related obstructive sleep apnea: when does it matter? Effect on motor memory consolidation versus emotional health. J Clin Sleep Med 2020; 16:377-384. [PMID: 31992413 DOI: 10.5664/jcsm.8210] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
STUDY OBJECTIVES The clinical importance of obstructive sleep apnea, which can be prevalent during rapid eye movement (REM) sleep, is unclear. The current study examines the effect of REM-related obstructive sleep apnea on motor memory consolidation as well as on mood states. METHODS We compared performance on the motor sequence task (MST), psychomotor vigilance test (PVT), Functional Outcomes of Sleep Questionnaire, and the Profile of Mood State (POMS) survey between 3 groups: healthy controls (n = 18), REM-exclusive OSA (n = 17), and patients with OSA with respiratory events throughout REM and non-rapid eye movement (NREM) sleep (n = 18). RESULTS As expected, performance on the MST improved overnight in the healthy control group. An improvement which was similar in magnitude was also observed in the REM-exclusive OSA group whereas patients with similar OSA during REM and NREM sleep showed reduced overnight memory consolidation. Consistent with these results, we found a correlation between overnight MST improvement and the apnea hypopnea index during NREM sleep (P = .041), but not during REM sleep (P = .424). However, patients with REM-exclusive apnea demonstrated the most negative emotions based on scoring highest on the POMS survey (P = .019). CONCLUSIONS Our results provide evidence that although apneas occurring only during REM sleep do not have an effect on the encoding and stabilization of motor sequence memories, they are deleterious for emotional health.
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Affiliation(s)
- Ina Djonlagic
- Department of Neurology, Beth Israel Hospital and Harvard Medical School, Boston, Massachusetts.,Center for Sleep and Cognition, Department of Psychiatry, Beth Israel Hospital and Harvard Medical School, Boston, Massachusetts
| | - Meng Guo
- Department of Neurology, Beth Israel Hospital and Harvard Medical School, Boston, Massachusetts.,Department of Plastic Surgery, Medical College of Wisconsin, Milwaukee, Wisconsin
| | - Moroke Igue
- Department of Neurology, Beth Israel Hospital and Harvard Medical School, Boston, Massachusetts
| | - Atul Malhotra
- Division of Pulmonary, Critical Care and Sleep Medicine, University of California San Diego, La Jolla, California
| | - Robert Stickgold
- Center for Sleep and Cognition, Department of Psychiatry, Beth Israel Hospital and Harvard Medical School, Boston, Massachusetts
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Aurora RN, Crainiceanu C, Gottlieb DJ, Kim JS, Punjabi NM. Obstructive Sleep Apnea during REM Sleep and Cardiovascular Disease. Am J Respir Crit Care Med 2019; 197:653-660. [PMID: 29112823 DOI: 10.1164/rccm.201706-1112oc] [Citation(s) in RCA: 99] [Impact Index Per Article: 19.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
RATIONALE Obstructive sleep apnea (OSA) during REM sleep is a common disorder. Data on whether OSA that occurs predominantly during REM sleep is associated with health outcomes are limited. OBJECTIVES The present study examined the association between OSA during REM sleep and a composite cardiovascular endpoint in a community sample with and without prevalent cardiovascular disease. METHODS Full-montage home polysomnography was conducted as part of the Sleep Heart Health Study. The study cohort was followed for an average of 9.5 years, during which time cardiovascular events were assessed. Only participants with a non-REM apnea-hypopnea index (AHI) of less than 5 events/h were included. A composite cardiovascular endpoint was determined as the occurrence of nonfatal or fatal events, including myocardial infarction, coronary artery revascularization, congestive heart failure, and stroke. Proportional hazards regression was used to derive the adjusted hazards ratios for the composite cardiovascular endpoint. MEASUREMENTS AND MAIN RESULTS The sample consisted of 3,265 subjects with a non-REM AHI of less than 5.0 events/h. Using a REM AHI of less than 5.0 events/h as the reference group (n = 1,758), the adjusted hazards ratios for the composite cardiovascular endpoint in those with severe REM OSA (≥30 events/h; n = 180) was 1.35 (95% confidence interval, 0.98-1.85). Stratified analyses demonstrated that the association was most notable in those with prevalent cardiovascular disease and severe OSA during REM sleep with an adjusted hazards ratio of 2.56 (95% confidence interval, 1.46-4.47). CONCLUSIONS Severe OSA that occurs primarily during REM sleep is associated with higher incidence of a composite cardiovascular endpoint, but in only those with prevalent cardiovascular disease.
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Affiliation(s)
| | | | - Daniel J Gottlieb
- 3 Veterans Affairs Boston Healthcare System, Boston, Massachusetts; and.,4 Division of Sleep and Circadian Disorders, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts
| | | | - Naresh M Punjabi
- 1 Department of Medicine.,5 Department of Epidemiology, Johns Hopkins University, Baltimore, Maryland
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Hoshino T, Sasanabe R, Tanigawa T, Murotani K, Arimoto M, Ueda H, Shiomi T. Effect of rapid eye movement-related obstructive sleep apnea on adherence to continuous positive airway pressure. J Int Med Res 2018; 46:2238-2248. [PMID: 29614906 PMCID: PMC6023053 DOI: 10.1177/0300060518758583] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Objective Rapid eye movement (REM)-related obstructive sleep apnea (OSA) is characterized by respiratory events such as apnea and hypopnea predominately or exclusively during REM sleep. Several studies have revealed clinical predictors of adherence to the use of continuous positive airway pressure (CPAP). However, the effect of REM-related OSA on adherence to CPAP use remains unclear. Therefore, we investigated the effects of REM-related OSA on adherence to CPAP use 6 months after treatment initiation. Methods We enrolled 161 patients in this study and divided them into 3 groups: the good adherence, poor adherence, and dropout groups. We compared polysomnographic data and clinical findings, including those regarding morbidity of REM-related OSA, among the three groups to identify predictors of adherence to CPAP use. Results None of the 43 patients in the good adherence group had REM-related OSA. Multivariate logistic regression analysis of the good adherence and dropout groups indicated that REM-related OSA was the only factor associated with adherence to CPAP use (odds ratio, 41.984; 95% confidence interval, 2.257–781.007). Conclusions REM-related OSA is a reliable risk factor for dropout from CPAP therapy.
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Affiliation(s)
- Tetsuro Hoshino
- 1 Department of Otorhinolaryngology, Aichi Medical University School of Medicine, Nagakute, Japan
| | - Ryujiro Sasanabe
- 2 Department of Sleep Medicine, Aichi Medical University School of Medicine, Nagakute, Japan
| | - Tohru Tanigawa
- 1 Department of Otorhinolaryngology, Aichi Medical University School of Medicine, Nagakute, Japan
| | - Kenta Murotani
- 3 Center for Clinical Research, Aichi Medical University School of Medicine, Nagakute, Japan
| | - Mariko Arimoto
- 1 Department of Otorhinolaryngology, Aichi Medical University School of Medicine, Nagakute, Japan
| | - Hiromi Ueda
- 1 Department of Otorhinolaryngology, Aichi Medical University School of Medicine, Nagakute, Japan
| | - Toshiaki Shiomi
- 2 Department of Sleep Medicine, Aichi Medical University School of Medicine, Nagakute, Japan
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Uzer F, Toptas AB, Okur U, Bozkurt S, Dogrul E, Turhan M, Cilli A. Comparison of positional and rapid eye movement-dependent sleep apnea syndromes. Ann Thorac Med 2018; 13:42-47. [PMID: 29387255 PMCID: PMC5772107 DOI: 10.4103/atm.atm_184_17] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
AIM We aimed to compare the clinical, epidemiological, and polysomnographic features of rapid eye movement (REM)-dependent obstructive sleep apnea syndrome (OSAS) and positional OSAS which are two separate clinical entities. METHODS Between January 2014 and December 2015, at the Akdeniz University Medical Faculty Hospital, patients who were diagnosed REM-dependent and positional OSAS with polysomnography were retrospectively studied. RESULTS In this study, 1727 patients were screened consecutively. Five hundred and eighty-four patients were included in the study. Of the patients, 24.6% (140) were diagnosed with REM-dependent OSAS and 75.4% (444) were diagnosed as positional OSAS. Female predominance was found in REM-dependent OSAS (P < 0.001). The mean total apnea-hypopnea index (AHI), non-REM AHI, and supine AHI in REM-dependent OSAS were 14.73, 9.24, and 17.73, respectively, and these values were significantly lower when compared with positional OSAS (P < 0.001). Patients diagnosed with REM-dependent OSAS had a statistically significant tendency to be overweight (P < 0.001). For REM-dependent OSAS, total pulse rate, supine pulse rate, and REM pulse rate were statistically higher than positional OSAS (P < 0.001). CONCLUSION Positional OSAS is a clinical entity that is more common than REM-dependent OSAS. OSAS severity is higher in positional OSAS than REM-dependent OSAS. REM-dependent OSAS is observed more commonly in women.
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Affiliation(s)
- Fatih Uzer
- Department of Respiratory Medicine, Kastamonu State Hospital, Kastamonu, Turkey
| | - Asli Bostancı Toptas
- Department of Otolaryngology, Akdeniz University School of Medicine, Antalya, Turkey
| | - Ummuhan Okur
- Department of Sleep Laboratory, Akdeniz University School of Medicine, Antalya, Turkey
| | - Selen Bozkurt
- Department of Biostatistics and Medicine Informatics, Akdeniz University School of Medicine, Antalya, Turkey
| | - Ebru Dogrul
- Department of Sleep Laboratory, Akdeniz University School of Medicine, Antalya, Turkey
| | - Murat Turhan
- Department of Otolaryngology, Akdeniz University School of Medicine, Antalya, Turkey
| | - Aykut Cilli
- Department of Respiratory Medicine, Akdeniz University School of Medicine, Antalya, Turkey
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Almeneessier AS, Almousa Y, Hammad O, Olaish AH, ALAnbay ET, BaHammam AS. Long-term adherence to continuous positive airway pressure in patients with rapid eye movement-only obstructive sleep apnea: a prospective cohort study. J Thorac Dis 2017; 9:3755-3765. [PMID: 29268383 DOI: 10.21037/jtd.2017.09.57] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Background Obstructive sleep apnea (OSA) during rapid eye movement (REM) sleep is a special form of OSA that occurs predominantly during REM sleep. No study has assessed the long-term adherence to continuous positive airway pressure (CPAP) among patients with REM-only OSA. To objectively assess the long-term adherence to CPAP therapy among patients with REM-predominant (REM-only) OSA. Methods This was a prospective observational cohort study that included consecutive patients who were diagnosed with OSA. Patients were divided into the following two groups: (I) REM-only OSA [an apnea hypopnea index (AHI) of ≥5, with a REM-AHI/NREM-AHI of >2, an NREM-AHI of <15, and a minimum of 15 min of REM-sleep duration], and (II) non-stage specific OSA. Follow-up was performed at 1, 6 and 12 months after the initiation of CPAP-therapy. Results The study included 175 patients; 30 met the criteria for REM-only OSA, and the remaining patients constituted the non-stage specific OSA group. The number of hours of CPAP use per day was significantly lower in the REM-only OSA group at 1, 6 and 12 months compared to the non-stage specific OSA group. At 12 months, the number of hours used per day was 3.8±1.8 and 5.1±2.1 hours in the REM-only and non-stage specific OSA groups, respectively (P=0.003). Approximately 80% of the enrolled participants in both groups were still using CPAP at the end of the study; 23.3% of REM-only OSA patients met the criteria for good adherence (>4 hours/day), and 56.7% met the criteria for partial adherence. Conclusions CPAP adherence is lower among patients with REM-only OSA compared to patients with non-stage specific OSA.
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Affiliation(s)
- Aljohara S Almeneessier
- Department of Family Medicine and Community, Department of Medicine, College of Medicine, King Saud University, Saudi Arabia
| | - Yasser Almousa
- University Sleep Disorders Center, Department of Medicine, College of Medicine, King Saud University, Saudi Arabia
| | - Omeima Hammad
- University Sleep Disorders Center, Department of Medicine, College of Medicine, King Saud University, Saudi Arabia
| | - Awad H Olaish
- University Sleep Disorders Center, Department of Medicine, College of Medicine, King Saud University, Saudi Arabia
| | - Eiman T ALAnbay
- University Sleep Disorders Center, Department of Medicine, College of Medicine, King Saud University, Saudi Arabia
| | - Ahmed S BaHammam
- University Sleep Disorders Center, Department of Medicine, College of Medicine, King Saud University, Saudi Arabia
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Abstract
Positive airway pressure (PAP) remains primary therapy for most patients with obstructive sleep apnea (OSA). CPAP, APAP, and BPAP are all reasonable therapies that can be used for patients with uncomplicated OSA across the spectrum of disease severity. BPAP should be considered for patients who are nonadherent to CPAP or APAP therapy because of pressure intolerance. Several additional factors should be considered when choosing the type of PAP device for a given patient, including associated symptoms and comorbid medical problems, cost, access to online data management and patient portals, and the portability for the device for patients who travel frequently.
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22
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Sunnetcioglu A, Sertogullarından B, Ozbay B, Gunbatar H, Ekin S. Obstructive sleep apnea related to rapid-eye-movement or non-rapid-eye-movement sleep: comparison of demographic, anthropometric, and polysomnographic features. J Bras Pneumol 2016; 42:48-54. [PMID: 26982041 PMCID: PMC4805387 DOI: 10.1590/s1806-37562016000000012] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2015] [Accepted: 08/08/2015] [Indexed: 12/16/2022] Open
Abstract
Objective : To determine whether there are significant differences between rapid-eye-movement (REM)-related obstructive sleep apnea (OSA) and non-REM (NREM)-related OSA, in terms of the demographic, anthropometric, and polysomnographic characteristics of the subjects. Methods : This was a retrospective study of 110 patients (75 males) with either REM-related OSA (n = 58) or NREM-related OSA (n = 52). To define REM-related and NREM-related OSA, we used a previously established criterion, based on the apnea-hypopnea index (AHI): AHI-REM/AHI-NREM ratio > 2 and ≤ 2, respectively. Results : The mean age of the patients with REM-related OSA was 49.5 ± 11.9 years, whereas that of the patients with NREM-related OSA was 49.2 ± 12.6 years. The overall mean AHI (all sleep stages combined) was significantly higher in the NREM-related OSA group than in the REM-related OSA group (38.6 ± 28.2 vs. 14.8 ± 9.2; p < 0.05). The mean AHI in the supine position (s-AHI) was also significantly higher in the NREM-related OSA group than in the REM-related OSA group (49.0 ± 34.3 vs. 18.8 ± 14.9; p < 0.0001). In the NREM-related OSA group, the s-AHI was higher among the men. In both groups, oxygen desaturation was more severe among the women. We found that REM-related OSA was more common among the patients with mild-to-moderate OSA, whereas NREM-related OSA was more common among those with severe OSA. Conclusions : We found that the severity of NREM-related OSA was associated mainly with s-AHI. Our findings suggest that the s-AHI has a more significant effect on the severity of OSA than does the AHI-REM. When interpreting OSA severity and choosing among treatment modalities, physicians should take into consideration the sleep stage and the sleep posture.
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Affiliation(s)
- Aysel Sunnetcioglu
- Pulmonology Department, School of Medicine, Yuzuncu Yil University, Van, Turkey
| | | | - Bulent Ozbay
- Pulmonology Department, School of Medicine, Muğla Sıtkı Koçman University, Muğla, Turkey
| | - Hulya Gunbatar
- Pulmonology Department, School of Medicine, Yuzuncu Yil University, Van, Turkey
| | - Selami Ekin
- Pulmonology Department, School of Medicine, Yuzuncu Yil University, Van, Turkey
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Walia HK, Griffith SD, Thompson NR, Moul DE, Foldvary-Schaefer N, Mehra R. Impact of Sleep-Disordered Breathing Treatment on Patient Reported Outcomes in a Clinic-Based Cohort of Hypertensive Patients. J Clin Sleep Med 2016; 12:1357-1364. [PMID: 27568910 DOI: 10.5664/jcsm.6188] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2016] [Accepted: 09/02/2016] [Indexed: 12/29/2022]
Abstract
STUDY OBJECTIVES We hypothesized that patient reported outcomes (PROs) improve with positive airway pressure (PAP) in patients with sleep-disordered breathing (SDB) and hypertension (HTN). METHODS Questionnaire-based PROs (sleepiness [Epworth Sleepiness Scale, (ESS)], depression [Patient Health Questionnaire-9 (PHQ-9)], and fatigue [Fatigue Severity Scale (FSS)]) were retrospectively examined in patients with SDB and HTN at baseline and within a year following PAP initiation. PRO changes were estimated using multivariable linear mixed-effect models adjusted for baseline age, sex, race, body mass index, resistant hypertension (RHTN) status, cardiac and diabetes history, and correlation between repeated measurements. Age and race by PAP interaction terms (mean change, 95% CI) were examined. RESULTS 894 patients with HTN and SDB were examined. 130 (15%) had baseline RHTN (age 58 ± 12 y, 52.9 % male, BMI 36.2 ± 9.1 kg/m2). In multivariable models, a significant improvement in sleepiness ESS (-2.09, 95% CI: -2.37, -1.82), PHQ-9 (-1.91, 95% CI: -2.25, -1.56), and FSS scores (-4.06 95% CI: -4.89, -3.22) was observed. A significant race by PAP effect interaction was observed (p < 0.0001 for all PROs); Caucasians had greater improvements than non-Caucasians. The interaction term of effect of PAP and age was significant for ESS (p = 0.04) and PHQ-9 (p = 0.0003), indicating greater improvement in younger patients. CONCLUSIONS Consistent improvement of broad PRO domains in response to PAP in SDB was observed in this clinic-based hypertensive cohort; Caucasians and younger patients derived greater benefit.
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Affiliation(s)
- Harneet K Walia
- Sleep Disorders Center, Neurological Institute, Cleveland Clinic, Cleveland, OH
| | - Sandra D Griffith
- Department of Quantitative Health Sciences, Cleveland Clinic, Cleveland, OH
| | - Nicolas R Thompson
- Department of Quantitative Health Sciences, Cleveland Clinic, Cleveland, OH
| | - Douglas E Moul
- Sleep Disorders Center, Neurological Institute, Cleveland Clinic, Cleveland, OH
| | | | - Reena Mehra
- Sleep Disorders Center, Neurological Institute, Cleveland Clinic, Cleveland, OH
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Phenotypes in obstructive sleep apnea: A definition, examples and evolution of approaches. Sleep Med Rev 2016; 35:113-123. [PMID: 27815038 DOI: 10.1016/j.smrv.2016.10.002] [Citation(s) in RCA: 183] [Impact Index Per Article: 22.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2016] [Revised: 07/23/2016] [Accepted: 10/05/2016] [Indexed: 01/02/2023]
Abstract
Obstructive sleep apnea (OSA) is a complex and heterogeneous disorder and the apnea hypopnea index alone can not capture the diverse spectrum of the condition. Enhanced phenotyping can improve prognostication, patient selection for clinical trials, understanding of mechanisms, and personalized treatments. In OSA, multiple condition characteristics have been termed "phenotypes." To help classify patients into relevant prognostic and therapeutic categories, an OSA phenotype can be operationally defined as: "A category of patients with OSA distinguished from others by a single or combination of disease features, in relation to clinically meaningful attributes (symptoms, response to therapy, health outcomes, quality of life)." We review approaches to clinical phenotyping in OSA, citing examples of increasing analytic complexity. Although clinical feature based OSA phenotypes with significant prognostic and treatment implications have been identified (e.g., excessive daytime sleepiness OSA), many current categorizations lack association with meaningful outcomes. Recent work focused on pathophysiologic risk factors for OSA (e.g., arousal threshold, craniofacial morphology, chemoreflex sensitivity) appears to capture heterogeneity in OSA, but requires clinical validation. Lastly, we discuss the use of machine learning as a promising phenotyping strategy that can integrate multiple types of data (genomic, molecular, cellular, clinical) to identify unique, meaningful OSA phenotypes.
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Walia HK, Griffith SD, Foldvary-Schaefer N, Thomas G, Bravo EL, Moul DE, Mehra R. Longitudinal Effect of CPAP on BP in Resistant and Nonresistant Hypertension in a Large Clinic-Based Cohort. Chest 2016. [PMID: 26225487 DOI: 10.1378/chest.15-0697] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
BACKGROUND Clinic-based effectiveness studies of sleep-disordered breathing (SDB) treatment in reducing BP in resistant hypertension (RHTN) vs non-RHTN are sparse. We hypothesize that CPAP use in SDB reduces BP significantly in RHTN and non-RHTN in a large clinic-based cohort. METHODS Electronic medical records were reviewed in patients with SDB and comorbid RHTN and non-RHTN for CPAP therapy initiation (baseline) and subsequent visits. We estimated generalizable BP changes from multivariable mixed-effects linear models for systolic BP (SBP), diastolic BP, and mean arterial pressure, adjusting for RHTN status, age, sex, race, BMI, cardiac history, and diabetes and repeated measure correlation. RESULTS Of 894 patients, 130 (15%) had RHTN at baseline (age, 58 ± 12 years; 52% men; BMI, 36 ± 9 kg/m(2)). Patients with RHTN had significantly higher BP overall (P < .001), most notably for SBP (6.9 mm Hg; 95% CI, 3.84, 9.94). In the year following CPAP initiation, improvements in BP indexes did not generally differ based on RHTN status in which RHTN status was a fixed effect. However, there was a significant decrease in SBP (3.08 mm Hg; 95% CI, 1.79, 4.37), diastolic BP (2.28; 95% CI, 1.56, 3.00), and mean arterial pressure (2.54 mm Hg; 95% CI, 1.73, 3.36) in both groups. CONCLUSIONS In this clinic-based effectiveness study involving patients closely followed for BP control, a significant reduction of BP measures (strongest for SBP) was observed in response to CPAP which was similar in RHTN and non-RHTN groups thus informing expected clinical CPAP treatment response.
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Affiliation(s)
- Harneet K Walia
- Sleep Disorders Center, Neurological Institute, Cleveland Clinic, Cleveland, OH.
| | - Sandra D Griffith
- Department of Quantitative Health Sciences, Cleveland Clinic, Cleveland, OH
| | | | - George Thomas
- Department of Nephrology and Hypertension, Cleveland Clinic, Cleveland, OH
| | - Emmanuel L Bravo
- Department of Nephrology and Hypertension, Cleveland Clinic, Cleveland, OH
| | - Douglas E Moul
- Sleep Disorders Center, Neurological Institute, Cleveland Clinic, Cleveland, OH
| | - Reena Mehra
- Sleep Disorders Center, Neurological Institute, Cleveland Clinic, Cleveland, OH
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Freedman N. COUNTERPOINT: Does Laboratory Polysomnography Yield Better Outcomes Than Home Sleep Testing? No. Chest 2015; 148:308-310. [PMID: 26238830 DOI: 10.1378/chest.15-0479] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Affiliation(s)
- Neil Freedman
- Division of Pulmonary, Critical Care, Allergy and Immunology, NorthShore University Health System, Bannockburn, IL.
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Edwards C, Mukherjee S, Simpson L, Palmer LJ, Almeida OP, Hillman DR. Depressive Symptoms before and after Treatment of Obstructive Sleep Apnea in Men and Women. J Clin Sleep Med 2015; 11:1029-38. [PMID: 25902824 DOI: 10.5664/jcsm.5020] [Citation(s) in RCA: 83] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2014] [Accepted: 03/17/2015] [Indexed: 11/13/2022]
Abstract
STUDY OBJECTIVES To determine prevalence of depressive symptoms in obstructive sleep apnea (OSA) and the impact of OSA treatment on depression scores. METHODS Consecutive new patients referred for investigation of suspected OSA were approached. Consenting patients completed a patient health questionnaire (PHQ-9) for depressive symptoms when attending for laboratory polysomnography. Those with moderate/severe (apneahypopnea index [AHI] ≥ 15 events/h) and/or symptomatic mild OSA (AHI 5-14.99 events/h) were offered continuous positive airway pressure (CPAP) therapy. PHQ-9 was repeated after 3 months of CPAP with compliance recorded. Of a maximum PHQ-9 score of 27, a cut point ≥ 10 (PHQ-9 ≥ 10) was used to indicate presence of clinically significant depressive symptoms. RESULTS A total of 426 participants (243 males) were recruited. Mean ± standard deviation body mass index (BMI) was 32.1 ± 7.1 kg/m2 and AHI 33.6 ± 28.9 events/h. PHQ-9 was 10.5 ± 6.1 and independently related to AHI (p < 0.001) and BMI (p < 0.001). In those without OSA, PHQ-9 ≥ 10 was more common in women, but no gender difference was evident with OSA. Of 293 patients offered CPAP, 228 were compliant (mean nightly use > 5 h) over 3 months of therapy. In them, with therapy, AHI decreased from 46.7 ± 27.4 to 6.5 ± 1.6 events/h, PHQ-9 from 11.3 ± 6.1 to 3.7 ± 2.9 and PHQ-9 ≥ 10 from 74.6% to 3.9% (p < 0.001 in each case). Magnitude of change in PHQ-9 was similar in men and women. Antidepressant use was constant throughout. CONCLUSIONS Depressive symptoms are common in OSA and related to its severity. They improve markedly with CPAP, implying a relationship to untreated OSA.
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Affiliation(s)
- Cass Edwards
- School of Surgery, University of Western Australia, Crawley, Australia.,West Australian Sleep Disorders Research Institute, Queen Elizabeth II Medical Centre, Nedlands, Australia.,Department of Pulmonary Physiology and Sleep Medicine, Sir Charles Gairdner Hospital, Nedlands, Australia
| | - Sutapa Mukherjee
- West Australian Sleep Disorders Research Institute, Queen Elizabeth II Medical Centre, Nedlands, Australia
| | - Laila Simpson
- West Australian Sleep Disorders Research Institute, Queen Elizabeth II Medical Centre, Nedlands, Australia.,Centre for Genetic Origins of Health and Disease, University of Western Australia, Crawley, Australia.,Centre for Sleep Science, School of Anatomy, Physiology and Human Biology, University of Western Australia, Crawley, Australia
| | - Lyle J Palmer
- The Joanna Briggs Institute and School of Translational Health Science, University of Adelaide, Adelaide, Australia
| | - Osvaldo P Almeida
- WA Centre for Health & Ageing and School of Psychiatry & Clinical Neurosciences, University of Western Australia, Crawley, Australia; Department of Psychiatry, Royal Perth Hospital, Perth, Australia
| | - David R Hillman
- School of Surgery, University of Western Australia, Crawley, Australia.,West Australian Sleep Disorders Research Institute, Queen Elizabeth II Medical Centre, Nedlands, Australia.,Department of Pulmonary Physiology and Sleep Medicine, Sir Charles Gairdner Hospital, Nedlands, Australia.,Centre for Sleep Science, School of Anatomy, Physiology and Human Biology, University of Western Australia, Crawley, Australia
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Duclos C, Beauregard MP, Bottari C, Ouellet MC, Gosselin N. The impact of poor sleep on cognition and activities of daily living after traumatic brain injury: a review. Aust Occup Ther J 2014; 62:2-12. [PMID: 25331353 DOI: 10.1111/1440-1630.12164] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/26/2014] [Indexed: 12/11/2022]
Abstract
BACKGROUND/AIM Patients frequently report sleep disruptions or insomnia during their hospital stay, particularly after a traumatic brain injury (TBI). The consequences of these sleep disturbances on everyday activities are not well documented and are therefore not considered in the evaluation of independence in activities of daily living (ADLs). The goal of this narrative review is to explore the consequences of poor sleep quality on cognition and ADLs in the acute and subacute stages of a moderate and severe TBI, when patients are in acute care or inpatient rehabilitation. METHODS We will present an overview of normal sleep and its role in cognitive functioning, and then present the findings of studies that have investigated sleep characteristics in hospital settings and the consequences of sleep disturbances on ADLs. RESULTS During hospitalisation, TBI patients present severe sleep disturbances such as insomnia and sleep fragmentation, which are probably influenced by both the medical condition and the hospital or rehabilitation environment. Sleep disruption is associated with several cognitive deficits, including attention, memory and executive function impairments. Poor quality and/or insufficient quantity of sleep in acute TBI probably affect general functioning and ADLs calling for these cognitive functions. CONCLUSIONS AND SIGNIFICANCE The cognitive impairments present following TBI are probably exacerbated by poor sleep quality and sleep deprivation during hospitalisation, which in turn impact ADLs among this population. Health-care personnel should further consider sleep disturbances among people with TBI and a sleep protocol should be established.
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Affiliation(s)
- Catherine Duclos
- Center for Advanced Research in Sleep Medicine, Hôpital du Sacré-Coeur de Montréal, Montreal, Québec, Canada; Department of Psychiatry, Université de Montréal, Montreal, Québec, Canada
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Gupta R, Lahan V, Sindhwani G. Sleep-stage-independent obstructive sleep apnea: an unidentified group? Neurol Sci 2013; 34:1543-50. [PMID: 23283530 DOI: 10.1007/s10072-012-1281-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2012] [Accepted: 12/17/2012] [Indexed: 12/20/2022]
Abstract
Our clinical experience suggested existence of a third group, stage-independent-OSA besides two known groups: REM-dependent-OSA and NREM-dependent-OSA. This study was planned to compare the characteristics of this group with the other two. All the subjects undergoing diagnostic video-polysomnographies with AHI >5/h were included in this study. Based upon the ratio of AHI during REM and NREM sleep, various groups were formed. REM-dependent-OSA was defined as AHI-REM/AHI-NREM >2; all other subjects were included in Not-REM-dependent-OSA (A-1 analysis). This group was further bifurcated into two groups: Non-REM-dependent OSA (NREM-dependent-OSA) where AHI-NREM/AHI-REM >2 and remaining subjects were included in the sleep-stage-independent-OSA group (A-2 analysis). SPSS v 17.0 was used to calculate independent sample t test (A-1 analysis) and Kruskall-Wallis test (A-2 analysis). Using A-1 approach, REM-dependent-OSA group was found to be suffering from mild-moderate OSA (90 %). REM-dependent OSA group had lower AHI-NREM (P < 0.001; 95 % CI 22.11-36.81) and lower AHI-total (P < 0.001; 95 % CI 15.39-30.73). Surprisingly, AHI-REM and DI-REM were not significantly different between these groups. A-2 analysis showed that overall, REM-dependent-OSA had lowest AHI-total while the stage-independent group had highest (P < 0.001). However, on analysis of REM-dependent-OSA, it was found that few of the subjects from this group had severe OSA (AHI-total > 30/h). The NREM-AHI increased linearly as we moved from REM-dependent-OSA to stage-independent-OSA with a significant difference across groups (P < 0.001). However, similar trend was not observed for AHI-REM. This study showed that a third group, sleep-stage-independent-OSA also exists when OSA is classified according to the proportion of apnea across sleep stages. This classification partially corresponds with the severity of illness.
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Affiliation(s)
- Ravi Gupta
- Department of Psychiatry and Sleep Clinic Himalayan, Institute of Medical Sciences, Swami Ram Nagar, Doiwala, 248140, Dehradun, India,
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Veauthier C. Younger age, female sex, and high number of awakenings and arousals predict fatigue in patients with sleep disorders: a retrospective polysomnographic observational study. Neuropsychiatr Dis Treat 2013; 9:1483-94. [PMID: 24109185 PMCID: PMC3792952 DOI: 10.2147/ndt.s50763] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND The Fatigue Severity Scale (FSS) is widely used to assess fatigue, not only in the context of multiple sclerosis-related fatigue, but also in many other medical conditions. Some polysomnographic studies have shown high FSS values in sleep-disordered patients without multiple sclerosis. The Modified Fatigue Impact Scale (MFIS) has increasingly been used in order to assess fatigue, but polysomnographic data investigating sleep-disordered patients are thus far unavailable. Moreover, the pathophysiological link between sleep architecture and fatigue measured with the MFIS and the FSS has not been previously investigated. METHODS This was a retrospective observational study (n = 410) with subgroups classified according to sleep diagnosis. The statistical analysis included nonparametric correlation between questionnaire results and polysomnographic data, age and sex, and univariate and multiple logistic regression. RESULTS The multiple logistic regression showed a significant relationship between FSS/MFIS values and younger age and female sex. Moreover, there was a significant relationship between FSS values and number of arousals and between MFIS values and number of awakenings. CONCLUSION Younger age, female sex, and high number of awakenings and arousals are predictive of fatigue in sleep-disordered patients. Further investigations are needed to find the pathophysiological explanation for these relationships.
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Affiliation(s)
- Christian Veauthier
- Department of Neurology, Hanse-Klinikum, Stralsund, Germany ; Department of Neurology, Centre Hospitalier de Belfort-Montbéliard (CHBM), Montbéliard, France
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