1
|
Hajipour M, Hirsch Allen AJ, Beaudin AE, Raneri JK, Jen R, Foster GE, Fogel S, Kendzerska T, Series F, Skomro RP, Robillard R, Kimoff RJ, Hanly PJ, Fels S, Singh A, Azarbarzin A, Ayas NT. All Obstructive Sleep Apnea Events Are Not Created Equal: The Relationship between Event-related Hypoxemia and Physiologic Response. Ann Am Thorac Soc 2024; 21:794-802. [PMID: 38252424 DOI: 10.1513/annalsats.202309-777oc] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Accepted: 01/22/2024] [Indexed: 01/23/2024] Open
Abstract
Rationale: Obstructive sleep apnea (OSA) severity is typically assessed by the apnea-hypopnea index (AHI), a frequency-based metric that allocates equal weight to all respiratory events. However, more severe events may have a greater physiologic impact. Objectives: The purpose of this study was to determine whether the degree of event-related hypoxemia would be associated with the postevent physiologic response. Methods: Patients with OSA (AHI, ⩾5/h) from the multicenter Canadian Sleep and Circadian Network cohort were studied. Using mixed-effect linear regression, we examined associations between event-related hypoxic burden (HBev) assessed by the area under the event-related oxygen saturation recording with heart rate changes (ΔHRev), vasoconstriction (vasoconstriction burden [VCBev] assessed with photoplethysmography), and electroencephalographic responses (power ratio before and after events). Results: Polysomnographic recordings from 658 patients (median [interquartile range] age, 55.00 [45.00, 64.00] yr; AHI, 27.15 [14.90, 64.05] events/h; 42% female) were included in the analyses. HBev was associated with an increase in all physiologic responses after controlling for age, sex, body mass index, sleep stage, total sleep time, and study centers; for example, 1 standard deviation increase in HBev was associated with 0.21 [95% confidence interval, 0.2, 0.22], 0.08 [0.08, 0.09], and 0.22 [0.21, 0.23] standard deviation increases in ΔHRev, VCBev, and β-power ratio, respectively. Conclusions: Increased event-related hypoxic burden was associated with greater responses across a broad range of physiologic signals. Future metrics that incorporate information about the variability of these physiologic responses may have promise in providing a more nuanced assessment of OSA severity.
Collapse
Affiliation(s)
| | | | - Andrew E Beaudin
- Department of Clinical Neurosciences
- Hotchkiss Brain Institute, and
| | - Jill K Raneri
- Department of Medicine, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
- Sleep Centre, Foothills Medical Centre, Calgary, Alberta, Canada
| | | | - Glen E Foster
- School of Health and Exercise Sciences, University of British Columbia, Kelowna, British Columbia, Canada
| | | | - Tetyana Kendzerska
- Department of Medicine, Faculty of Medicine, The Ottawa Hospital Research Institute, and
| | - Fréderic Series
- Department of Medicine, Faculty of Medicine, Université Laval, Quebec City, Quebec, Canada
| | - Robert P Skomro
- Department of Medicine, Faculty of Medicine, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - Rebecca Robillard
- Department of Medicine, Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada
| | - R John Kimoff
- Respiratory Division and Sleep Laboratory, McGill University Health Centre, Montreal, Quebec, Canada; and
| | - Patrick J Hanly
- Hotchkiss Brain Institute, and
- Department of Medicine, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
- Sleep Centre, Foothills Medical Centre, Calgary, Alberta, Canada
| | - Sidney Fels
- Department of Electrical and Computer Engineering, Faculty of Applied Science, University of British Columbia, Vancouver, British Columbia, Canada
| | - Amrit Singh
- Department of Anesthesiology, Pharmacology, and Therapeutics, Faculty of Medicine, and
| | - Ali Azarbarzin
- Division of Sleep and Circadian Disorders, Brigham and Women's Hospital, Harvard Medical School, Harvard University, Boston, Massachusetts
| | - Najib T Ayas
- Department of Experimental Medicine
- Department of Medicine
| |
Collapse
|
2
|
Lenka J, Foley R, Metersky M, Salmon A. Relationship between obstructive sleep apnea and pulmonary hypertension: past, present and future. Expert Rev Respir Med 2024:1-13. [PMID: 38646681 DOI: 10.1080/17476348.2024.2345684] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Accepted: 04/17/2024] [Indexed: 04/23/2024]
Abstract
INTRODUCTION Obstructive sleep apnea (OSA) is a widely prevalent condition with consequent multiple organ systems complications. There is consensus that OSA is associated with negative effects on pulmonary hemodynamics but whether it contributes to development of clinical pulmonary hypertension (PH) is unclear. AREAS COVERED In this review, we (1) highlight previous studies looking into the possible bidirectional association of OSA and PH, focusing on those that explore clinical prognostic implications, (2) explore potential pathophysiology, (3) discuss the new metrics in OSA, (4) describe endo-phenotyping of OSA, (5) recommend possible risk assessment and screening pathways. EXPERT OPINION Relying only on symptoms to consider a sleep study in PH patients is a missed opportunity to detect OSA, which, if present and not treated, can worsen outcomes. The potential prognostic role of sleep study metrics such as oxygen desaturation index (ODI), hypoxic burden (HB) and ventilatory burden (VB) in OSA should be studied in prospective trials to identify patients at risk for PH. AHI alone has not provided clarity. In those with PH, we should consider replacing ambulatory overnight pulse oximetry (OPO) with home sleep studies (HST). In PH patients, mild OSA should be sufficient to consider PAP therapy.
Collapse
Affiliation(s)
- Jyotirmayee Lenka
- Division of Pulmonary, Critical Care and Sleep Medicine, University of Connecticut, Farmington, CT, USA
| | - Raymond Foley
- Division of Pulmonary, Critical Care and Sleep Medicine, University of Connecticut, Farmington, CT, USA
| | - Mark Metersky
- Division of Pulmonary, Critical Care and Sleep Medicine, University of Connecticut, Farmington, CT, USA
| | - Adrian Salmon
- Division of Pulmonary, Critical Care and Sleep Medicine, University of Connecticut, Farmington, CT, USA
| |
Collapse
|
3
|
Staykov E, Mann DL, Leppänen T, Töyräs J, Kainulainen S, Azarbarzin A, Duce B, Sands SA, Terrill PI. Increased flow limitation during sleep is associated with decreased psychomotor vigilance task performance in individuals with suspected obstructive sleep apnea: a multi-cohort study. Sleep 2024:zsae077. [PMID: 38513056 DOI: 10.1093/sleep/zsae077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2023] [Indexed: 03/23/2024] Open
Affiliation(s)
- Eric Staykov
- School of Electrical Engineering and Computer Science, The University of Queensland, Brisbane, Australia
| | - Dwayne L Mann
- School of Electrical Engineering and Computer Science, The University of Queensland, Brisbane, Australia
| | - Timo Leppänen
- School of Electrical Engineering and Computer Science, The University of Queensland, Brisbane, Australia
- Department of Technical Physics, University of Eastern Finland, Kuopio, Finland
- Diagnostic Imaging Center, Kuopio University Hospital, Kuopio, Finland
| | - Juha Töyräs
- School of Electrical Engineering and Computer Science, The University of Queensland, Brisbane, Australia
- Department of Technical Physics, University of Eastern Finland, Kuopio, Finland
- Science Service Center, Kuopio University Hospital, Kuopio, Finland
| | - Samu Kainulainen
- Department of Technical Physics, University of Eastern Finland, Kuopio, Finland
- Diagnostic Imaging Center, Kuopio University Hospital, Kuopio, Finland
| | - Ali Azarbarzin
- Division of Sleep and Circadian Disorders, Department of Medicine, Brigham & Women's Hospital & Harvard Medical School, Boston, MA, USA
| | - Brett Duce
- Department of Respiratory & Sleep Medicine, Princess Alexandra Hospital, Brisbane, Australia
- Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, Australia
| | - Scott A Sands
- Division of Sleep and Circadian Disorders, Department of Medicine, Brigham & Women's Hospital & Harvard Medical School, Boston, MA, USA
| | - Philip I Terrill
- School of Electrical Engineering and Computer Science, The University of Queensland, Brisbane, Australia
| |
Collapse
|
4
|
Huang W, Zhou E, Zhang J, Zhou T, Wang X, Shen J, Zhu H, Guan J, Yi H, Yin S. Association between multiple sleep dimensions in obstructive sleep apnea and the early sign of atherosclerosis. J Clin Sleep Med 2024. [PMID: 38420989 DOI: 10.5664/jcsm.11090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/02/2024]
Abstract
STUDY OBJECTIVES We investigated the associations between multiple sleep dimensions in obstructive sleep apnea (OSA) and carotid intima-media thickness (CIMT), an early sign of atherosclerosis, in subjects from the Shanghai Sleep Health Study (SSHS). METHODS We performed secondary analysis of SSHS in a group of subjects performed the ultrasound evaluation from 2018 to 2022. Multiple sleep dimensions were measured using standard polysomnography. CIMT was measured from ultrasound images as an early sign of atherosclerosis. Multivariable-adjusted linear regression and logistic regression analyses were performed to detect associations between sleep traits in OSA and CIMT. RESULTS CIMT was found to increase with increasing severity of OSA (P < 0.001). When adjusted for conventional risk factors, microarousal index (MAI) and hypoxic burden (HB) were positively correlated with CIMT while slow wave sleep (SWS) and mean apnea-hypopnea event duration (MAHD) showed negative correlation with CIMT (all P < 0.01). In binary logistic regression analysis, participants with high MAI, less SWS, higher HB and shorter MAHD showed a higher prevalence of thick CIMT with no evidence of interaction by age, sex, or body mass index (P-interaction > 0.05). CONCLUSIONS Subjects with more severe sleep fragmentation, more severe hypoxemia and increased arousability were more likely to have increased CIMT after adjusting for potential confounders. It is important to evaluate novel indices of sleep fragmentation, hypoxemia and arousability in OSA for early detection and prevention of cardiovascular disease, including stroke. CLINICAL TRIAL REGISTRATION Chinese Clinical Trial Registry; URL: http://www.chictr.org.cn/showproj.aspx?proj=43057; No. ChiCTR1900025714.
Collapse
Affiliation(s)
- Weijun Huang
- Department of Otorhinolaryngology Head and Neck Surgery, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Shanghai Key Laboratory of Sleep Disordered Breathing, Shanghai, China
- Otolaryngology Institute of Shanghai Jiao Tong University, Shanghai, China
| | - Enhui Zhou
- Department of Otorhinolaryngology Head and Neck Surgery, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Shanghai Key Laboratory of Sleep Disordered Breathing, Shanghai, China
- Otolaryngology Institute of Shanghai Jiao Tong University, Shanghai, China
| | - Jinngyu Zhang
- Department of Otorhinolaryngology Head and Neck Surgery, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Shanghai Key Laboratory of Sleep Disordered Breathing, Shanghai, China
- Otolaryngology Institute of Shanghai Jiao Tong University, Shanghai, China
| | - Tianjiao Zhou
- Department of Otorhinolaryngology Head and Neck Surgery, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Shanghai Key Laboratory of Sleep Disordered Breathing, Shanghai, China
- Otolaryngology Institute of Shanghai Jiao Tong University, Shanghai, China
| | - Xiaoting Wang
- Department of Otorhinolaryngology Head and Neck Surgery, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Shanghai Key Laboratory of Sleep Disordered Breathing, Shanghai, China
- Otolaryngology Institute of Shanghai Jiao Tong University, Shanghai, China
| | - Jinhong Shen
- Department of Otorhinolaryngology Head and Neck Surgery, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Shanghai Key Laboratory of Sleep Disordered Breathing, Shanghai, China
- Otolaryngology Institute of Shanghai Jiao Tong University, Shanghai, China
| | - Huaming Zhu
- Department of Otorhinolaryngology Head and Neck Surgery, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Shanghai Key Laboratory of Sleep Disordered Breathing, Shanghai, China
- Otolaryngology Institute of Shanghai Jiao Tong University, Shanghai, China
| | - Jian Guan
- Department of Otorhinolaryngology Head and Neck Surgery, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Shanghai Key Laboratory of Sleep Disordered Breathing, Shanghai, China
- Otolaryngology Institute of Shanghai Jiao Tong University, Shanghai, China
| | - Hongliang Yi
- Department of Otorhinolaryngology Head and Neck Surgery, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Shanghai Key Laboratory of Sleep Disordered Breathing, Shanghai, China
- Otolaryngology Institute of Shanghai Jiao Tong University, Shanghai, China
| | - Shankai Yin
- Department of Otorhinolaryngology Head and Neck Surgery, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Shanghai Key Laboratory of Sleep Disordered Breathing, Shanghai, China
- Otolaryngology Institute of Shanghai Jiao Tong University, Shanghai, China
| |
Collapse
|
5
|
Schmickl CN, Orr JE, Sands SA, Alex RM, Azarbarzin A, McGinnis L, White S, Mazzotti DR, Nokes B, Owens RL, Gottlieb DJ, Malhotra A. Loop Gain as a Predictor of Blood Pressure Response in Patients Treated for Obstructive Sleep Apnea: Secondary Analysis of a Clinical Trial. Ann Am Thorac Soc 2024; 21:296-307. [PMID: 37938917 PMCID: PMC10848904 DOI: 10.1513/annalsats.202305-437oc] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Accepted: 11/06/2023] [Indexed: 11/10/2023] Open
Abstract
Rationale: Randomized trials have shown inconsistent cardiovascular benefits from obstructive sleep apnea (OSA) therapy. Intermittent hypoxemia can increase both sympathetic nerve activity and loop gain ("ventilatory instability"), which may thus herald cardiovascular treatment benefit. Objectives: To test the hypothesis that loop gain predicts changes in 24-hour mean blood pressure (MBP) in response to OSA therapy and compare its predictive value against that of other novel biomarkers. Methods: The HeartBEAT (Heart Biomarker Evaluation in Apnea Treatment) trial assessed the effect of 12 weeks of continuous positive airway pressure (CPAP) versus oxygen versus control on 24-hour MBP. We measured loop gain and hypoxic burden from sleep tests and identified subjects with a sleepy phenotype using cluster analysis. Associations between biomarkers and 24-h MBP were assessed in the CPAP/oxygen arms using linear regression models adjusting for various covariates. Secondary outcomes and predictors were analyzed similarly. Results: We included 93 and 94 participants in the CPAP and oxygen arms, respectively. Overall, changes in 24-hour MBP were small, but interindividual variability was substantial (mean [standard deviation], -2 [8] and 1 [8] mm Hg in the CPAP and oxygen arms, respectively). Higher loop gain was significantly associated with greater reductions in 24-hour MBP independent of covariates in the CPAP arm (-1.5 to -1.9 mm Hg per 1-standard-deviation increase in loop gain; P ⩽ 0.03) but not in the oxygen arm. Other biomarkers were not associated with improved cardiovascular outcomes. Conclusions: To our knowledge, this is the first study suggesting that loop gain predicts blood pressure response to CPAP therapy. Eventually, loop gain estimates may facilitate patient selection for research and clinical practice. Clinical trial registered with www.clinicaltrials.gov (NCT01086800).
Collapse
Affiliation(s)
- Christopher N Schmickl
- Division of Pulmonary, Critical Care and Sleep Medicine, University of California, San Diego, San Diego, California
| | - Jeremy E Orr
- Division of Pulmonary, Critical Care and Sleep Medicine, University of California, San Diego, San Diego, California
| | - Scott A Sands
- Division of Sleep and Circadian Disorders, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts
| | - Raichel M Alex
- Division of Sleep and Circadian Disorders, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts
| | - Ali Azarbarzin
- Division of Sleep and Circadian Disorders, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts
| | - Lana McGinnis
- Division of Pulmonary, Critical Care and Sleep Medicine, University of California, San Diego, San Diego, California
| | - Stephanie White
- Division of Pulmonary, Critical Care and Sleep Medicine, University of California, San Diego, San Diego, California
| | - Diego R Mazzotti
- Division of Medical Informatics and
- Division of Pulmonary Critical Care and Sleep Medicine, Department of Internal Medicine, University of Kansas Medical Center, Kansas City, Kansas; and
| | - Brandon Nokes
- Division of Pulmonary, Critical Care and Sleep Medicine, University of California, San Diego, San Diego, California
| | - Robert L Owens
- Division of Pulmonary, Critical Care and Sleep Medicine, University of California, San Diego, San Diego, California
| | - Daniel J Gottlieb
- Division of Sleep and Circadian Disorders, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts
- Veterans Affairs Boston Healthcare System, West Roxbury, Massachusetts
| | - Atul Malhotra
- Division of Pulmonary, Critical Care and Sleep Medicine, University of California, San Diego, San Diego, California
| |
Collapse
|
6
|
Panza GS, Kissane DM, Puri S, Mateika JH. The hypoxic ventilatory response and hypoxic burden are predictors of the magnitude of ventilatory long-term facilitation in humans. J Physiol 2023; 601:4611-4623. [PMID: 37641466 PMCID: PMC11006398 DOI: 10.1113/jp285192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Accepted: 08/16/2023] [Indexed: 08/31/2023] Open
Abstract
Mild intermittent hypoxia initiates progressive augmentation (PA) and ventilatory long-term facilitation (vLTF) in humans. The magnitude of these forms of plasticity might be influenced by anthropometric and physiological variables, as well as protocol elements. However, the impact of many of these variables on the magnitude of respiratory plasticity has not been established in humans. A meta-analysis was completed using anthropometric and physiological variables obtained from 124 participants that completed one of three intermittent hypoxia protocols. Simple correlations between the aggregate variables and the magnitude of PA and vLTF standardized to baseline was completed. Thereafter, the variables correlated to PA or vLTF were input into a multilinear regression equation. Baseline measures of the hypoxic ventilatory response was the sole predictor of PA (R = 0.370, P = 0.012). Similarly, this variable along with the hypoxic burden predicted the magnitude of vLTF (R = 0.546, P < 0.006 for both variables). In addition, the magnitude of PA was strongly correlated to vLTF (R = 0.617, P < 0.001). Anthropometric measures do not predict the magnitude of PA and vLTF in humans. Alternatively, the hypoxic ventilatory response was the sole predictor of PA, and in combination with the hypoxic burden, predicted the magnitude of vLTF. These influences should be considered in the design of mild intermittent hypoxia protocol studies in humans. Moreover, the strong correlation between PA and vLTF suggests that a common mechanistic pathway may have a role in the initiation of these forms of plasticity. KEY POINTS: Mild intermittent hypoxia initiates progressive augmentation (PA) and ventilatory long-term facilitation (vLTF) in humans. Many of the anthropometric and physiological variables that could impact the magnitude of these forms of plasticity are unknown. Anthropometric and physiological variables were measured from a total of 124 participants that completed one of three distinct intermittent hypoxia protocols. The variables correlated to PA or vLTF were input into a multilinear regression analysis. The hypoxic ventilatory response was the sole predictor of PA, while this variable in addition to the average hypoxic burden predicted the magnitude of vLTF. A strong correlation between PA and vLTF was also revealed. These influences should be considered in the design of mild intermittent hypoxia protocol studies in humans. Moreover, the strong correlation between PA and vLTF suggests that a common mechanistic pathway may have a role in the initiation of these forms of plasticity.
Collapse
Affiliation(s)
- Gino S Panza
- John D. Dingell Veterans Affairs Medical Center, Detroit, MI, USA
- Department of Health Care Sciences, Program of Occupational Therapy, Wayne State University, Detroit, MI, USA
| | - Dylan M Kissane
- John D. Dingell Veterans Affairs Medical Center, Detroit, MI, USA
- Department of Physiology, Wayne State University School of Medicine, Detroit, MI, USA
| | - Shipra Puri
- John D. Dingell Veterans Affairs Medical Center, Detroit, MI, USA
- Department of Physiology, Wayne State University School of Medicine, Detroit, MI, USA
| | - Jason H Mateika
- John D. Dingell Veterans Affairs Medical Center, Detroit, MI, USA
- Department of Physiology, Wayne State University School of Medicine, Detroit, MI, USA
- Department of Internal Medicine, Wayne State University School of Medicine, Detroit, MI, USA
| |
Collapse
|
7
|
Labarca G, Vena D, Hu WH, Esmaeili N, Gell L, Yang HC, Wang TY, Messineo L, Taranto-Montemurro L, Sofer T, Barr RG, Stone KL, White DP, Wellman A, Sands S, Redline S, Azarbarzin A. Sleep Apnea Physiological Burdens and Cardiovascular Morbidity and Mortality. Am J Respir Crit Care Med 2023; 208:802-813. [PMID: 37418748 PMCID: PMC10563185 DOI: 10.1164/rccm.202209-1808oc] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Accepted: 07/07/2023] [Indexed: 07/09/2023] Open
Abstract
Rationale: Obstructive sleep apnea is characterized by frequent reductions in ventilation, leading to oxygen desaturations and/or arousals. Objectives: In this study, association of hypoxic burden with incident cardiovascular disease (CVD) was examined and compared with that of "ventilatory burden" and "arousal burden." Finally, we assessed the extent to which the ventilatory burden, visceral obesity, and lung function explain variations in hypoxic burden. Methods: Hypoxic, ventilatory, and arousal burdens were measured from baseline polysomnograms in the Multi-Ethnic Study of Atherosclerosis (MESA) and the Osteoporotic Fractures in Men (MrOS) studies. Ventilatory burden was defined as event-specific area under ventilation signal (mean normalized, area under the mean), and arousal burden was defined as the normalized cumulative duration of all arousals. The adjusted hazard ratios for incident CVD and mortality were calculated. Exploratory analyses quantified contributions to hypoxic burden of ventilatory burden, baseline oxygen saturation as measured by pulse oximetry, visceral obesity, and spirometry parameters. Measurements and Main Results: Hypoxic and ventilatory burdens were significantly associated with incident CVD (adjusted hazard ratio [95% confidence interval] per 1 SD increase in hypoxic burden: MESA, 1.45 [1.14, 1.84]; MrOS, 1.13 [1.02, 1.26]; ventilatory burden: MESA, 1.38 [1.11, 1.72]; MrOS, 1.12 [1.01, 1.25]), whereas arousal burden was not. Similar associations with mortality were also observed. Finally, 78% of variation in hypoxic burden was explained by ventilatory burden, whereas other factors explained only <2% of variation. Conclusions: Hypoxic and ventilatory burden predicted CVD morbidity and mortality in two population-based studies. Hypoxic burden is minimally affected by measures of adiposity and captures the risk attributable to ventilatory burden of obstructive sleep apnea rather than a tendency to desaturate.
Collapse
Affiliation(s)
- Gonzalo Labarca
- Division of Sleep and Circadian Disorders, Brigham and Women’s Hospital and Harvard Medical School, Boston, Massachusetts
| | - Daniel Vena
- Division of Sleep and Circadian Disorders, Brigham and Women’s Hospital and Harvard Medical School, Boston, Massachusetts
| | - Wen-Hsin Hu
- Division of Sleep and Circadian Disorders, Brigham and Women’s Hospital and Harvard Medical School, Boston, Massachusetts
| | - Neda Esmaeili
- Division of Sleep and Circadian Disorders, Brigham and Women’s Hospital and Harvard Medical School, Boston, Massachusetts
| | - Laura Gell
- Division of Sleep and Circadian Disorders, Brigham and Women’s Hospital and Harvard Medical School, Boston, Massachusetts
| | - Hyung Chae Yang
- Division of Sleep and Circadian Disorders, Brigham and Women’s Hospital and Harvard Medical School, Boston, Massachusetts
- Department of Otolaryngology-Head and Neck Surgery, Chonnam National University Medical School and Chonnam National University Hospital, Gwangju, South Korea
| | - Tsai-Yu Wang
- Division of Sleep and Circadian Disorders, Brigham and Women’s Hospital and Harvard Medical School, Boston, Massachusetts
| | - Ludovico Messineo
- Division of Sleep and Circadian Disorders, Brigham and Women’s Hospital and Harvard Medical School, Boston, Massachusetts
| | - Luigi Taranto-Montemurro
- Division of Sleep and Circadian Disorders, Brigham and Women’s Hospital and Harvard Medical School, Boston, Massachusetts
| | - Tamar Sofer
- Division of Sleep and Circadian Disorders, Brigham and Women’s Hospital and Harvard Medical School, Boston, Massachusetts
| | - Robert G. Barr
- Department of Medicine, Columbia University College of Physicians and Surgeons, New York, New York; and
| | - Katie L. Stone
- Research Institute, California Pacific Medical Center, San Francisco, California
| | - David P. White
- Division of Sleep and Circadian Disorders, Brigham and Women’s Hospital and Harvard Medical School, Boston, Massachusetts
| | - Andrew Wellman
- Division of Sleep and Circadian Disorders, Brigham and Women’s Hospital and Harvard Medical School, Boston, Massachusetts
| | - Scott Sands
- Division of Sleep and Circadian Disorders, Brigham and Women’s Hospital and Harvard Medical School, Boston, Massachusetts
| | - Susan Redline
- Division of Sleep and Circadian Disorders, Brigham and Women’s Hospital and Harvard Medical School, Boston, Massachusetts
| | - Ali Azarbarzin
- Division of Sleep and Circadian Disorders, Brigham and Women’s Hospital and Harvard Medical School, Boston, Massachusetts
| |
Collapse
|
8
|
Solano-Pérez E, Coso C, Castillo-García M, Romero-Peralta S, Lopez-Monzoni S, Laviña E, Cano-Pumarega I, Sánchez-de-la-Torre M, García-Río F, Mediano O. Diagnosis and Treatment of Sleep Apnea in Children: A Future Perspective Is Needed. Biomedicines 2023; 11:1708. [PMID: 37371803 DOI: 10.3390/biomedicines11061708] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Revised: 06/06/2023] [Accepted: 06/09/2023] [Indexed: 06/29/2023] Open
Abstract
Obstructive sleep apnea (OSA) in children is a prevalent, but still, today, underdiagnosed illness, which consists of repetitive episodes of upper airway obstruction during sleep with important repercussions for sleep quality. OSA has relevant consequences in the pediatric population, mainly in the metabolic, cardiovascular (CV), and neurological spheres. However, contrary to adults, advances in diagnostic and therapeutic management have been scarce in the last few years despite the increasing scientific evidence of the deleterious consequences of pediatric OSA. The problem of underdiagnosis and the lack of response to treatment in some groups make an update to the management of OSA in children necessary. Probably, the heterogeneity of OSA is not well represented by the classical clinical presentation and severity parameters (apnea/hypopnea index (AHI)), and new strategies are required. A specific and consensus definition should be established. Additionally, the role of simplified methods in the diagnosis algorithm should be considered. Finally, the search for new biomarkers for risk stratification is needed in this population. In conclusion, new paradigms based on personalized medicine should be implemented in this population.
Collapse
Affiliation(s)
- Esther Solano-Pérez
- Sleep Unit, Pneumology Department, Hospital Universitario de Guadalajara, 19002 Guadalajara, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Respiratorias (CIBERES), 28029 Madrid, Spain
| | - Carlota Coso
- Sleep Unit, Pneumology Department, Hospital Universitario de Guadalajara, 19002 Guadalajara, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Respiratorias (CIBERES), 28029 Madrid, Spain
| | - María Castillo-García
- Sleep Unit, Pneumology Department, Hospital Universitario de Guadalajara, 19002 Guadalajara, Spain
- Medicine Department, Universidad de Alcalá, 28805 Madrid, Spain
- Sleep Research Institute, 28036 Madrid, Spain
| | - Sofía Romero-Peralta
- Sleep Unit, Pneumology Department, Hospital Universitario de Guadalajara, 19002 Guadalajara, Spain
- Medicine Department, Universidad de Alcalá, 28805 Madrid, Spain
- Sleep Research Institute, 28036 Madrid, Spain
| | - Sonia Lopez-Monzoni
- Sleep Unit, Pneumology Department, Hospital Universitario de Guadalajara, 19002 Guadalajara, Spain
| | - Eduardo Laviña
- Sleep Unit, Pneumology Department, Hospital Universitario de Guadalajara, 19002 Guadalajara, Spain
| | - Irene Cano-Pumarega
- Centro de Investigación Biomédica en Red de Enfermedades Respiratorias (CIBERES), 28029 Madrid, Spain
- Sleep Unit, Pneumology Department, Hospital Universitario Ramón y Cajal, Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS), 28034 Madrid, Spain
| | - Manuel Sánchez-de-la-Torre
- Centro de Investigación Biomédica en Red de Enfermedades Respiratorias (CIBERES), 28029 Madrid, Spain
- Group of Precision Medicine in Chronic Diseases, University Hospital Arnau de Vilanova and Santa María, 25198 Lleida, Spain
- Department of Nursing and Physiotherapy, Faculty of Nursing and Physiotherapy, Institut de Recerca Biomèdica de Lleida (IRBLleida), University of Lleida, 25002 Lleida, Spain
| | - Francisco García-Río
- Centro de Investigación Biomédica en Red de Enfermedades Respiratorias (CIBERES), 28029 Madrid, Spain
- Respiratory Diseases Group, Respiratory Service, Hospital Universitario La Paz, IdiPAZ, 28046 Madrid, Spain
- Pneumology Department, Hospital Universitario La Paz, IdiPAZ, 28046 Madrid, Spain
- Faculty of Medicine, Universidad Autónoma de Madrid, 28049 Madrid, Spain
| | - Olga Mediano
- Sleep Unit, Pneumology Department, Hospital Universitario de Guadalajara, 19002 Guadalajara, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Respiratorias (CIBERES), 28029 Madrid, Spain
- Medicine Department, Universidad de Alcalá, 28805 Madrid, Spain
| |
Collapse
|
9
|
Corser B, Eves E, Warren-McCormick J, Rucosky G. Effects of atomoxetine plus a hypnotic on obstructive sleep apnea severity in patients with a moderately collapsible pharyngeal airway. J Clin Sleep Med 2023; 19:1035-1042. [PMID: 36734173 PMCID: PMC10235724 DOI: 10.5664/jcsm.10464] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Revised: 12/22/2022] [Accepted: 01/17/2023] [Indexed: 02/04/2023]
Abstract
STUDY OBJECTIVES Pharmacotherapy for obstructive sleep apnea (OSA) regained consideration after the discovery that atomoxetine and oxybutynin greatly reduced OSA severity. However, atomoxetine and oxybutynin reduced the arousal threshold and may therefore be poorly tolerated in patients with OSA and disturbed sleep. As a result, we tested the combination of atomoxetine plus 2 hypnotics in patients with OSA. The effects of atomoxetine plus: (1) trazodone (Ato-Trazo) and (2) lemborexant vs placebo on apnea-hypopnea index, hypoxic burden, arousal threshold, and total sleep time were assessed. Drug safety was also ascertained, together with the effect of the combinations on other OSA traits, self-reported sleep quality, and next-day alertness. METHODS Following a baseline study, 15 patients with mild-to-severe OSA with moderate upper airway collapsibility were administered Ato-Trazo, atomoxetine and lemborexant, and matching placebo according to a double-blind, randomized, crossover design. Apnea-hypopnea index and other objective outcomes were calculated from 3 clinical, in-laboratory polysomnograms. RESULTS Ato-Trazo significantly reduced apnea-hypopnea index from a median [interquartile range] of 18.2 [11.8 to 31.3] on placebo to 7.4 [5.4 to 16.1] events/h, P = .024, and hypoxic burden from 46.3 [25.1 to 88.3] on placebo to 18.7 [14.9 to 43.5], P = .003. This effect was likely driven by an increase in polysomnography-estimated pharyngeal muscle activity during the events (P = .029). Atomoxetine and lemborexant had smaller statistically insignificant effects. Contrary to atomoxetine and oxybutynin, Ato-Trazo and atomoxetine and lemborexant did not reduce the arousal threshold. Both combinations had no effect on total sleep time but worsened self-reported sleep quality. CONCLUSIONS Ato-Trazo has the potential to become a useful drug combination, however, longer trials are needed to determine the best dosage and the subgroup of patients who may benefit most from this combination. CLINICAL TRIAL REGISTRATION Registry: ClinicalTrials.gov; Name: Crossover Trial of AD182 and AD504 in Obstructive Sleep Apnea; URL: https://clinicaltrials.gov/ct2/show/NCT04645524; Identifier: NCT04645524. CITATION Corser B, Eves E, Warren-McCormick J, Rucosky G. Effects of atomoxetine plus a hypnotic on obstructive sleep apnea severity in patients with a moderately collapsible pharyngeal airway. J Clin Sleep Med. 2023;19(6):1035-1042.
Collapse
Affiliation(s)
| | - Erica Eves
- Sleep Management Institute, Cincinnati, Ohio
| | | | | |
Collapse
|
10
|
Park JW, Almeida FR. Disparities in oxygen saturation and hypoxic burden levels in obstructive sleep apnea patient's response to oral appliance treatment. J Oral Rehabil 2022; 49:633-643. [PMID: 35274338 PMCID: PMC9322413 DOI: 10.1111/joor.13316] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Revised: 01/23/2022] [Accepted: 03/06/2022] [Indexed: 11/30/2022]
Abstract
Background Oxygen saturation indices show a strong correlation with long‐term health outcomes. Nonetheless, evidence on the relationship between reduction in respiratory events and increase in oxygenation levels following oral appliance (OA) treatment is scarce. Objectives To verify the relationship between reduction in the apnoea‐hypopnoea index (AHI) and oxygen saturation levels following OA treatment, we have conducted an evaluation of polysomnography (PSG) and clinical parameters associated with the improvement of oxygen desaturation. Methods OSA patients (n = 48) who received an OA and had pre‐ and post‐treatment PSG were classified into three responder groups according to the change in AHI and min O2 post‐treatment: responderAHIonly (decrease in AHI of ≥50% but increase in min O2 level of <4% or decrease); responderMinO2only (increase in min O2 level of ≥4% but decrease in AHI <50% or increase) and responderCongruous (decrease in AHI of ≥50% and increase in min O2 level of ≥4%). Various demographic and PSG variables were statistically compared among groups. Results There were 26 (54.17%) responderAHIonly, 9 (18.75%) responderMinO2only and 13 (27.08%) responderCongruous. Pre‐treatment min O2 was significantly lower in responderMinO2only. A higher pre‐treatment min O2 showed a significant correlation with a smaller amount of change in mean O2 (r = −.486) and min O2 (r = −.764) with treatment. Pre‐treatment min O2 showed the strongest ability to predict those who would show a ≥4% min O2 increase following treatment. Conclusion Certain patients do not show sufficient decrease in hypoxaemia in spite of the improvement in AHI. Pre‐treatment min O2 should be considered in OA treatment planning regarding its close relation to improvements in oxygenation levels with treatment.
Collapse
Affiliation(s)
- Ji Woon Park
- Department of Oral Health Sciences, Faculty of Dentistry, University of British Columbia, 2199 Wesbrook Mall, Vancouver, BC, V6T 1Z3, Canada.,Department of Oral Medicine and Oral Diagnosis, School of Dentistry and Dental Research Institute, Seoul National University, 101, Daehak-ro, Jongno-gu, Seoul, 03080, Korea (ROK).,Department of Oral Medicine, Seoul National University Dental Hospital, 101, Daehak-ro, Jongno-gu, Seoul, 03080, Korea (ROK)
| | - Fernanda R Almeida
- Department of Oral Health Sciences, Faculty of Dentistry, University of British Columbia, 2199 Wesbrook Mall, Vancouver, BC, V6T 1Z3, Canada
| |
Collapse
|
11
|
Blekic N, Bold I, Mettay T, Bruyneel M. Impact of Desaturation Patterns versus Apnea-Hypopnea Index in the Development of Cardiovascular Comorbidities in Obstructive Sleep Apnea Patients. Nat Sci Sleep 2022; 14:1457-1468. [PMID: 36045914 PMCID: PMC9423119 DOI: 10.2147/nss.s374572] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/14/2022] [Accepted: 08/15/2022] [Indexed: 11/23/2022] Open
Abstract
Various phenotypes of obstructive sleep apnea (OSA) have been recently described and are poorly assessed by the commonly used polysomnographic indices, such as the apnea-hypopnea index and oxygen desaturation index. Nocturnal hypoxemia is the hallmark of OSA and new quantitative markers, as hypoxic burden or desaturation severity, have been shown to be associated with cardiovascular (CV) mortality. The purpose of this overview is to review the endophenotypical and clinical characteristics of OSA, the current metrics, and to analyze different measurements of hypoxemia in OSA to predict the cardiovascular impact (eg hypoxic burden). Potential interest of multidimensional models to classify OSA, such as BAVENO classification, is also discussed, with the goal of focusing on specific endophenotypes that are likely to develop CV comorbidities, in order to guide clinicians to more aggressive management of OSA in these individuals.
Collapse
Affiliation(s)
- Nathan Blekic
- Department of Pulmonary Medicine, Saint-Pierre University Hospital, Brussels, Belgium and Université Libre de Bruxelles, Brussels, Belgium
| | - Ionela Bold
- Department of Pulmonary Medicine, Saint-Pierre University Hospital, Brussels, Belgium and Université Libre de Bruxelles, Brussels, Belgium
| | - Thomas Mettay
- Department of Pulmonary Medicine, Brugmann University Hospital, Brussels, Belgium and Université Libre de Bruxelles, Brussels, Belgium
| | - Marie Bruyneel
- Department of Pulmonary Medicine, Saint-Pierre University Hospital, Brussels, Belgium and Université Libre de Bruxelles, Brussels, Belgium.,Department of Pulmonary Medicine, Brugmann University Hospital, Brussels, Belgium and Université Libre de Bruxelles, Brussels, Belgium
| |
Collapse
|
12
|
Mullins AE, Parekh A, Kam K, Castillo B, Roberts ZJ, Fakhoury A, Valencia DI, Schoenholz R, Tolbert TM, Bronstein JZ, Mooney AM, Burschtin OE, Rapoport DM, Ayappa I, Varga AW. Selective Continuous Positive Airway Pressure Withdrawal With Supplemental Oxygen During Slow-Wave Sleep as a Method of Dissociating Sleep Fragmentation and Intermittent Hypoxemia-Related Sleep Disruption in Obstructive Sleep Apnea. Front Physiol 2021; 12:750516. [PMID: 34880775 PMCID: PMC8646104 DOI: 10.3389/fphys.2021.750516] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Accepted: 10/13/2021] [Indexed: 11/17/2022] Open
Abstract
Obstructive sleep apnea (OSA) is considered to impair memory processing and increase the expression of amyloid-β (Aβ) and risk for Alzheimer’s disease (AD). Given the evidence that slow-wave sleep (SWS) is important in both memory and Aβ metabolism, a better understanding of the mechanisms by which OSA impacts memory and risk for AD can stem from evaluating the role of disruption of SWS specifically and, when such disruption occurs through OSA, from evaluating the individual contributions of sleep fragmentation (SF) and intermittent hypoxemia (IH). In this study, we used continuous positive airway pressure (CPAP) withdrawal to recapitulate SWS-specific OSA during polysomnography (PSG), creating conditions of both SF and IH in SWS only. During separate PSGs, we created the conditions of SWS fragmentation but used oxygen to attenuate IH. We studied 24 patients (average age of 55 years, 29% female) with moderate-to-severe OSA [Apnea-Hypopnea Index (AHI); AHI4% > 20/h], who were treated and adherent to CPAP. Participants spent three separate nights in the laboratory under three conditions as follows: (1) consolidated sleep with CPAP held at therapeutic pressure (CPAP); (2) CPAP withdrawn exclusively in SWS (OSASWS) breathing room air; and (3) CPAP withdrawn exclusively in SWS with the addition of oxygen during pressure withdrawal (OSASWS + O2). Multiple measures of SF (e.g., arousal index) and IH (e.g., hypoxic burden), during SWS, were compared according to condition. Arousal index in SWS during CPAP withdrawal was significantly greater compared to CPAP but not significantly different with and without oxygen (CPAP = 1.1/h, OSASWS + O2 = 10.7/h, OSASWS = 10.6/h). However, hypoxic burden during SWS was significantly reduced with oxygen compared to without oxygen [OSASWS + O2 = 23 (%min)/h, OSASWS = 37 (%min)/h]. No significant OSA was observed in non-rapid eye movement (REM) stage 1 (NREM 1), non-REM stage 2 (NREM 2), or REM sleep (e.g., non-SWS) in any condition. The SWS-specific CPAP withdrawal induces OSA with SF and IH. The addition of oxygen during CPAP withdrawal results in SF with significantly less severe hypoxemia during the induced respiratory events in SWS. This model of SWS-specific CPAP withdrawal disrupts SWS with a physiologically relevant stimulus and facilitates the differentiation of SF and IH in OSA.
Collapse
Affiliation(s)
- Anna E Mullins
- Division of Pulmonary, Critical Care, and Sleep Medicine, Mount Sinai Integrative Sleep Center, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Ankit Parekh
- Division of Pulmonary, Critical Care, and Sleep Medicine, Mount Sinai Integrative Sleep Center, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Korey Kam
- Division of Pulmonary, Critical Care, and Sleep Medicine, Mount Sinai Integrative Sleep Center, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Bresne Castillo
- Division of Pulmonary, Critical Care, and Sleep Medicine, Mount Sinai Integrative Sleep Center, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Zachary J Roberts
- Division of Pulmonary, Critical Care, and Sleep Medicine, Mount Sinai Integrative Sleep Center, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Ahmad Fakhoury
- Division of Pulmonary, Critical Care, and Sleep Medicine, Mount Sinai Integrative Sleep Center, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Daphne I Valencia
- Division of Pulmonary, Critical Care, and Sleep Medicine, Mount Sinai Integrative Sleep Center, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Reagan Schoenholz
- Division of Pulmonary, Critical Care, and Sleep Medicine, Mount Sinai Integrative Sleep Center, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Thomas M Tolbert
- Division of Pulmonary, Critical Care, and Sleep Medicine, Mount Sinai Integrative Sleep Center, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Jason Z Bronstein
- Division of Pulmonary, Critical Care, and Sleep Medicine, Mount Sinai Integrative Sleep Center, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Anne M Mooney
- Division of Pulmonary, Critical Care, and Sleep Medicine, Mount Sinai Integrative Sleep Center, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Omar E Burschtin
- Division of Pulmonary, Critical Care, and Sleep Medicine, Mount Sinai Integrative Sleep Center, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - David M Rapoport
- Division of Pulmonary, Critical Care, and Sleep Medicine, Mount Sinai Integrative Sleep Center, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Indu Ayappa
- Division of Pulmonary, Critical Care, and Sleep Medicine, Mount Sinai Integrative Sleep Center, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Andrew W Varga
- Division of Pulmonary, Critical Care, and Sleep Medicine, Mount Sinai Integrative Sleep Center, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| |
Collapse
|
13
|
Azarbarzin A, Sands SA, Younes M, Taranto-Montemurro L, Sofer T, Vena D, Alex RM, Kim SW, Gottlieb DJ, White DP, Redline S, Wellman A. The Sleep Apnea-Specific Pulse-Rate Response Predicts Cardiovascular Morbidity and Mortality. Am J Respir Crit Care Med 2021; 203:1546-1555. [PMID: 33406013 DOI: 10.1164/rccm.202010-3900oc] [Citation(s) in RCA: 72] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Rationale: Randomized controlled trials have been unable to detect a cardiovascular benefit of continuous positive airway pressure in unselected patients with obstructive sleep apnea (OSA). We hypothesize that deleterious cardiovascular outcomes are concentrated in a subgroup of patients with a heightened pulse-rate response to apneas and hypopneas (ΔHR). Methods: We measured the ΔHR in the MESA (Multi-Ethnic Study of Atherosclerosis) (N = 1,395) and the SHHS (Sleep Heart Health Study) (N = 4,575). MESA data were used to determine the functional form of the association between the ΔHR and subclinical cardiovascular biomarkers, whereas primary analyses tested the association of the ΔHR with nonfatal or fatal cardiovascular disease (CVD) and all-cause mortality in longitudinal data from the SHHS. Measurements and Main Results: In the MESA, U-shaped relationships were observed between subclinical CVD biomarkers (coronary artery calcium, NT-proBNP [N-terminal prohormone BNP], and Framingham risk score) and the ΔHR; notably, a high ΔHR (upper quartile) was associated with elevated biomarker scores compared with a midrange ΔHR (25th-75th centiles). In the SHHS, individuals with a high ΔHR compared with a midrange ΔHR were at increased risk of nonfatal or fatal CVD and all-cause mortality (nonfatal adjusted hazard ratio [95% confidence interval (CI)], 1.60 [1.28-2.00]; fatal adjusted hazard ratio [95% CI], 1.68 [1.22-2.30]; all-cause adjusted hazard ratio [95% CI], 1.29 [1.07-1.55]). The risk associated with a high ΔHR was particularly high in those with a substantial hypoxic burden (nonfatal, 1.93 [1.36-2.73]; fatal, 3.50 [2.15-5.71]; all-cause, 1.84 [1.40-2.40]) and was exclusively observed in nonsleepy individuals. Conclusions: Individuals with OSA who demonstrate an elevated ΔHR are at increased risk of cardiovascular morbidity and mortality. This study identifies a prognostic biomarker for OSA that appears useful for risk stratification and patient selection for future clinical trials.
Collapse
Affiliation(s)
- Ali Azarbarzin
- Division of Sleep and Circadian Disorders, Brigham and Women's Hospital and Harvard Medical School, Harvard University, Boston, Massachusetts
| | - Scott A Sands
- Division of Sleep and Circadian Disorders, Brigham and Women's Hospital and Harvard Medical School, Harvard University, Boston, Massachusetts
| | - Magdy Younes
- Sleep Disorders Center, University of Manitoba, Winnipeg, Manitoba, Canada; and
| | - Luigi Taranto-Montemurro
- Division of Sleep and Circadian Disorders, Brigham and Women's Hospital and Harvard Medical School, Harvard University, Boston, Massachusetts
| | - Tamar Sofer
- Division of Sleep and Circadian Disorders, Brigham and Women's Hospital and Harvard Medical School, Harvard University, Boston, Massachusetts
| | - Daniel Vena
- Division of Sleep and Circadian Disorders, Brigham and Women's Hospital and Harvard Medical School, Harvard University, Boston, Massachusetts
| | - Raichel M Alex
- Division of Sleep and Circadian Disorders, Brigham and Women's Hospital and Harvard Medical School, Harvard University, Boston, Massachusetts
| | - Sang-Wook Kim
- Division of Sleep and Circadian Disorders, Brigham and Women's Hospital and Harvard Medical School, Harvard University, Boston, Massachusetts
| | - Daniel J Gottlieb
- Division of Sleep and Circadian Disorders, Brigham and Women's Hospital and Harvard Medical School, Harvard University, Boston, Massachusetts.,Veterans Affairs Boston Healthcare System, Boston, Massachusetts
| | - David P White
- Division of Sleep and Circadian Disorders, Brigham and Women's Hospital and Harvard Medical School, Harvard University, Boston, Massachusetts
| | - Susan Redline
- Division of Sleep and Circadian Disorders, Brigham and Women's Hospital and Harvard Medical School, Harvard University, Boston, Massachusetts
| | - Andrew Wellman
- Division of Sleep and Circadian Disorders, Brigham and Women's Hospital and Harvard Medical School, Harvard University, Boston, Massachusetts
| |
Collapse
|
14
|
Karhu T, Myllymaa S, Nikkonen S, Mazzotti DR, Töyräs J, Leppänen T. Longer and Deeper Desaturations Are Associated With the Worsening of Mild Sleep Apnea: The Sleep Heart Health Study. Front Neurosci 2021; 15:657126. [PMID: 33994931 PMCID: PMC8113677 DOI: 10.3389/fnins.2021.657126] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2021] [Accepted: 03/17/2021] [Indexed: 11/13/2022] Open
Abstract
Study Objectives Obesity, older age, and male sex are recognized risk factors for sleep apnea. However, it is unclear whether the severity of hypoxic burden, an essential feature of sleep apnea, is associated with the risk of sleep apnea worsening. Thus, we investigated our hypothesis that the worsening of sleep apnea is expedited in individuals with more severe desaturations. Methods The blood oxygen saturation (SpO2) signals of 805 Sleep Heart Health Study participants with mild sleep apnea [5 ≤ oxygen desaturation index (ODI) < 15] were analyzed at baseline and after a mean follow-up time of 5.2 years. Linear regression analysis, adjusted for relevant covariates, was utilized to study the association between baseline SpO2-derived parameters and change in sleep apnea severity, determined by a change in ODI. SpO2-derived parameters, consisting of ODI, desaturation severity (DesSev), desaturation duration (DesDur), average desaturation area (avg. DesArea), and average desaturation duration (avg. DesDur), were standardized to enable comparisons between the parameters. Results In the group consisting of both men and women, avg. DesDur (β = 1.594, p = 0.001), avg. DesArea (β = 1.316, p = 0.004), DesDur (β = 0.998, p = 0.028), and DesSev (β = 0.928, p = 0.040) were significantly associated with sleep apnea worsening, whereas ODI was not (β = -0.029, p = 0.950). In sex-stratified analysis, avg. DesDur (β = 1.987, p = 0.003), avg. DesArea (β = 1.502, p = 0.024), and DesDur (β = 1.374, p = 0.033) were significantly associated with sleep apnea worsening in men. Conclusion Longer and deeper desaturations are more likely to expose a patient to the worsening of sleep apnea. This information could be useful in the planning of follow-up monitoring or lifestyle counseling in the early stage of the disease.
Collapse
Affiliation(s)
- Tuomas Karhu
- Department of Applied Physics, University of Eastern Finland, Kuopio, Finland.,Diagnostic Imaging Center, Kuopio University Hospital, Kuopio, Finland
| | - Sami Myllymaa
- Department of Applied Physics, University of Eastern Finland, Kuopio, Finland.,Diagnostic Imaging Center, Kuopio University Hospital, Kuopio, Finland
| | - Sami Nikkonen
- Department of Applied Physics, University of Eastern Finland, Kuopio, Finland.,Diagnostic Imaging Center, Kuopio University Hospital, Kuopio, Finland
| | - Diego R Mazzotti
- Division of Medical Informatics, Department of Internal Medicine, University of Kansas Medical Center, Kansas City, KS, United States
| | - Juha Töyräs
- Department of Applied Physics, University of Eastern Finland, Kuopio, Finland.,Diagnostic Imaging Center, Kuopio University Hospital, Kuopio, Finland.,School of Information Technology and Electrical Engineering, The University of Queensland, Brisbane, OLD, Australia
| | - Timo Leppänen
- Department of Applied Physics, University of Eastern Finland, Kuopio, Finland.,Diagnostic Imaging Center, Kuopio University Hospital, Kuopio, Finland
| |
Collapse
|
15
|
Pinna GD, La Rovere MT, Robbi E, Tavazzi L, Maestri R. CARDIAC chronotropic effects of sleep-disordered breathing in patients with heart failure. J Sleep Res 2020; 30:e13160. [PMID: 32791565 DOI: 10.1111/jsr.13160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2020] [Revised: 07/09/2020] [Accepted: 07/15/2020] [Indexed: 11/30/2022]
Abstract
It is still not known whether the oscillation in heart rate (HR) induced by sleep-disordered breathing (SDB) in patients with heart failure entails significant chronotropic effects. We hypothesised that since cyclical changes in ventilation and arterial blood gases during SDB affect HR through multiple and complexly interacting mechanisms characterised by large inter-subject variability, chronotropic effects may change from patient to patient. A total of 42 patients with moderate-to-severe chronic heart failure with systolic dysfunction underwent an in-hospital sleep study. Chronotropic effects of SDB were quantified by comparing the distribution of instantaneous HR during SDB with that during periods without SDB (noSDB) within the same night in each patient. Based on distribution changes from noSDB to SDB, 12, nine, 11, and 10 patients showed a significant tachycardic, bradycardic, tachycardic and bradycardic, and neither significant tachycardic nor significant bradycardic effect, respectively. Tachycardic and bradycardic effects were primarily due to an increase in the rate rather than in the magnitude of cyclical HR elevations and reductions, and were more prevalent and severe in patients with dominant obstructive and central events, respectively. The apnea-hypopnea index did not differ between groups. Conversely, the time spent with an oxygen saturation of <90% was greater in the tachycardic and tachycardic-bradycardic groups compared to the bradycardic group. These findings indicate that HR distribution changes induced by SDB can vary from patient to patient revealing four distinct and well-characterised chronotropic effects. These effects are related to the degree of hypoxic burden brought about by SDB and are affected by the type of sleep apnea (central/obstructive).
Collapse
Affiliation(s)
- Gian Domenico Pinna
- Department of Biomedical Engineering, Istituti Clinici Scientifici Maugeri, IRCCS Montescano, Montescano, Italy
| | - Maria Teresa La Rovere
- Department of Cardiology, Istituti Clinici Scientifici Maugeri, IRCCS Montescano, Montescano, Italy
| | - Elena Robbi
- Department of Cardiology, Istituti Clinici Scientifici Maugeri, IRCCS Montescano, Montescano, Italy.,Sleep Laboratory, Department of Pneumology, Istituti Clinici Scientifici Maugeri, IRCCS Montescano, Montescano, Italy
| | - Luigi Tavazzi
- Maria Cecilia Hospital, GVM Care and Research, Cotignola, Italy
| | - Roberto Maestri
- Department of Biomedical Engineering, Istituti Clinici Scientifici Maugeri, IRCCS Montescano, Montescano, Italy
| |
Collapse
|
16
|
Abstract
Obstructive sleep apnea (OSA) is a common and heterogeneous disease characterized by episodic collapse within the upper airways, which leads to reduced ventilation and adverse consequences, including hypoxia, hypercapnia, sleep fragmentation, and long-term effects such as cardiovascular comorbidities. The clinical diagnosis of OSA and its severity classification are often determined based on the apnea-hypopnea index (AHI), defining the number of apneic and hypopnea events per hour of sleep. However, the limitations of the AHI to assess disease severity have necessitated the exploration of other metrics for additional information to reflect the complexity of OSA. Novel parameters such as the hypoxic burden have the potential to better capture the main features of OSA by maximizing the information available from the polysomnogram. These emerging measures have described multidimensional qualities of sleep-disordered breathing events and breathing irregularity and will ultimately result in better management of OSA.
Collapse
Affiliation(s)
- Wenhao Cao
- Department of Respiratory Medicine, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, People's Republic of China
| | - Jinmei Luo
- Department of Respiratory Medicine, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, People's Republic of China
| | - Yi Xiao
- Department of Respiratory Medicine, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, People's Republic of China
| |
Collapse
|