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Sigurdardottir FD, Bertisch SM, Reid ML, deFilippi CR, Lima JAC, Redline S, Omland T. Association between insomnia phenotypes and subclinical myocardial injury: The Multi-Ethnic Study of Atherosclerosis. Sleep 2022; 46:6964942. [PMID: 36579654 PMCID: PMC10091090 DOI: 10.1093/sleep/zsac318] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [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: 07/08/2022] [Revised: 11/04/2022] [Indexed: 12/30/2022] Open
Abstract
STUDY OBJECTIVES To assess whether the association between insomnia and subclinical myocardial injury, as measured by cardiac troponin T (cTnT), differs across insomnia phenotypes. METHODS We measured cTnT in 2188 participants in the Multi-Ethnic Study of Atherosclerosis (MESA) study who had completed sleep questionnaires and undergone unattended polysomnography (PSG) and 7-day actigraphy. Insomnia symptoms were defined as reporting at least one of the following ≥5 nights/week over the past four weeks: trouble falling asleep, waking up several times a night, having trouble getting back to sleep after you woke up too early or taking sleeping pills to help them sleep. OSA was defined as an apnea hypopneas index (AHI) >15. Participants were classified into insomnia phenotypes, including comorbid insomnia and OSA (COMISA) and insomnia associated with actigraphy estimated short sleep (<6hrs) or sleep fragmentation. RESULTS The mean age was 68.6 years (SD 9.2), 53.6% were male. 47.8% met threshold levels for insomnia symptoms, and 43.1% had an AHI >15. In adjusted linear regression models COMISA (ß 0.08 (SE 0.03), p<0.01) or insomnia with short sleep duration (ß 0.07 (SE 0.03), p<0.05) were each associated with higher cTnT compared to a reference group with no insomnia. Insomnia with fragmented sleep (ß 0.03 (SE 0.02)) was not associated with higher cTnT (p>0.05) in adjusted analyses. OSA was associated with higher cTnT (ß 0.09 (SE 0.03), p<0.01) in adjusted models. CONCLUSIONS COMISA and insomnia with short sleep duration, but not insomnia symptoms alone or fragmented sleep, were associated with increased circulating cTnT in older adults.
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Affiliation(s)
- Fjola D Sigurdardottir
- Department of Cardiology, Akershus University Hospital, Lørenskog, Norway.,Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - Suzanne M Bertisch
- Division of Sleep and Circadian Disorders, Brigham and Women's Hospital, Boston, Massachusetts.,Division of Sleep Medicine, Harvard Medical School, Boston, MA, USA
| | - Michelle L Reid
- Division of Sleep and Circadian Disorders, Brigham and Women's Hospital, Boston, Massachusetts
| | | | - Joao A C Lima
- Division of Cardiology, Department of Medicine, Johns Hopkins Hospital and School of Medicine, Baltimore, Maryland, USA
| | - Susan Redline
- Division of Sleep and Circadian Disorders, Brigham and Women's Hospital, Boston, Massachusetts.,Division of Sleep Medicine, Harvard Medical School, Boston, MA, USA
| | - Torbjørn Omland
- Department of Cardiology, Akershus University Hospital, Lørenskog, Norway.,Institute of Clinical Medicine, University of Oslo, Oslo, Norway
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Sigurdardottir FD, Øverby CT, Nikkonen S, Karhu T, Dammen T, Nordhus IH, Thorshov T, Einvik G, Kainulainen S, Leppänen T, Arnardottir ES, Töyräs J, Omland T, Hrubos-Strøm H. Novel oxygen desaturation parameters are associated with cardiac troponin I: Data from the Akershus Sleep Apnea Project. J Sleep Res 2022; 31:e13581. [PMID: 35289009 DOI: 10.1111/jsr.13581] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [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: 10/28/2021] [Revised: 02/15/2022] [Accepted: 02/21/2022] [Indexed: 12/27/2022]
Abstract
Novel diagnostic markers for obstructive sleep apnea beyond the apnea-hypopnea index (AHI) have been introduced. There are no studies on their association with markers of subclinical myocardial injury. We assessed the association between novel desaturation parameters and elevated cardiac troponin I and T. Participants with polysomnography (498) from the Akershus Sleep Apnea study were divided into normal and elevated biomarker groups based on sex-specific concentration thresholds (cardiac troponin I: ≥4 ng/L for women, ≥6 ng/L for men; and cardiac troponin T: ≥7 ng/L for women, ≥8 ng/L for men). Severity of obstructive sleep apnea was evaluated with the AHI, oxygen desaturation index, total sleep time with oxygen saturation below 90% (T90), lowest oxygen saturation (Min SpO2 %), and novel oxygen desaturation parameters: desaturation duration and desaturation severity. How the AHI and novel desaturation parameters predicted elevated cardiac troponin I and cardiac troponin T levels was assessed by the area under the curve (AUC). Based on multivariable-adjusted linear regression, the AHI (β = 0.004, p = 0.012), desaturation duration (β = 0.007, p = 0.004), and desaturation severity (β = 0.147, p = 0.002) were associated with cardiac troponin I levels but not cardiac troponin T. T90 was associated with cardiac troponin I (β = 0.006, p = 0.009) and cardiac troponin T (β = 0.005, p = 0.007). The AUC for the AHI 0.592 (standard error 0.043) was not significantly different from the AUC of T90 (SD 0.640, p = 0.08), desaturation duration 0.609 (SD 0.044, p = 0.42) or desaturation severity 0.616 (SD 0.043, p = 0.26) in predicting myocardial injury as assessed by cardiac troponin I. Oxygen desaturation parameters and the AHI were associated with cardiac troponin I levels but not cardiac troponin T levels. Novel oxygen desaturation parameters did not improve the prediction of subclinical myocardial injury compared to the AHI.
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Affiliation(s)
- Fjola D Sigurdardottir
- Department of Cardiology, Akershus University Hospital, Lørenskog, Norway.,Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - Caroline Tonje Øverby
- Department of Ear, Nose and Throat Surgery, Akershus University Hospital, Lørenskog, Norway.,Department of Behavioural Medicine, Faculty of Medicine, Institute of Basic Medical Sciences, University of Oslo, Oslo, Norway
| | - Sami Nikkonen
- Department of Applied Physics, University of Eastern Finland, Kuopio, Finland.,Diagnostic Imaging Center, Kuopio University Hospital, Kuopio, Finland
| | - Tuomas Karhu
- Department of Applied Physics, University of Eastern Finland, Kuopio, Finland.,Diagnostic Imaging Center, Kuopio University Hospital, Kuopio, Finland
| | - Toril Dammen
- Department of Behavioural Medicine, Faculty of Medicine, Institute of Basic Medical Sciences, University of Oslo, Oslo, Norway
| | - Inger Hilde Nordhus
- Department of Behavioural Medicine, Faculty of Medicine, Institute of Basic Medical Sciences, University of Oslo, Oslo, Norway.,Department of Clinical Psychology, University of Bergen, Bergen, Norway
| | - Thea Thorshov
- Department of Ear, Nose and Throat Surgery, Akershus University Hospital, Lørenskog, Norway.,Department of Behavioural Medicine, Faculty of Medicine, Institute of Basic Medical Sciences, University of Oslo, Oslo, Norway
| | - Gunnar Einvik
- Department of Cardiology, Akershus University Hospital, Lørenskog, Norway
| | - Samu Kainulainen
- Department of Applied Physics, University of Eastern Finland, Kuopio, Finland.,Diagnostic Imaging Center, Kuopio University Hospital, Kuopio, Finland
| | - Timo Leppänen
- 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, Queensland, Australia
| | - Erna Sif Arnardottir
- School of Technology, Reykjavik University Sleep Institute, Reykjavik University, Reykjavik, Iceland.,Landspitali University Hospital, Reykjavik, Iceland
| | - Juha Töyräs
- Department of Applied Physics, University of Eastern Finland, Kuopio, Finland.,School of Information Technology and Electrical Engineering, The University of Queensland, Brisbane, Queensland, Australia.,Service Center, Kuopio University Hospital, Kuopio, Finland
| | - Torbjørn Omland
- Department of Cardiology, Akershus University Hospital, Lørenskog, Norway.,Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - Harald Hrubos-Strøm
- Institute of Clinical Medicine, University of Oslo, Oslo, Norway.,Department of Ear, Nose and Throat Surgery, Akershus University Hospital, Lørenskog, Norway
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Sigurdardottir FD, Lyngbakken MN, Hveem K, Strøm HH, Røsjø H, Redline S, Omland T. Insomnia symptoms and subclinical myocardial injury: Data from the Nord-Trøndelag Health (HUNT) study. J Sleep Res 2021; 30:e13299. [PMID: 33629480 PMCID: PMC8382789 DOI: 10.1111/jsr.13299] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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: 11/16/2020] [Revised: 01/10/2021] [Accepted: 01/15/2021] [Indexed: 11/29/2022]
Abstract
Insomnia symptoms are associated with increased risk of heart failure (HF) and cardiovascular (CV) mortality. We hypothesised that insomnia symptoms are cross-sectionally associated with increased cardiac troponin I (cTnI), a biomarker of subclinical myocardial injury, and that phenotyping by insomnia symptoms and cTnI enhances longitudinal risk stratification in the general population. In a population-based study, cTnI was measured in 8,398 participants (median age 49 years, 55% women), who had answered questionnaires regarding insomnia symptoms. Association between cTnI and insomnia symptoms was assessed by linear regression analysis for each response category of a sleep questionnaire. Insomnia symptoms were defined as having difficulty falling asleep almost every night, difficulty maintaining sleep almost every night, and/or non-restorative sleep once a week or more. The primary outcome measure was a composite endpoint of CV mortality or first admission for HF. In all, 844 participants reported insomnia symptoms, 585 (69%) were women. Those with insomnia symptoms had marginally, but significantly higher median cTnI than those without insomnia symptoms, (median [interquartile range] 3.4 [2.4-5.2] ng/L versus 3.2 [2.2-4.9] ng/L; p = .014), but there was no association between any insomnia symptom and cTnI in unadjusted linear regression models (β 0.06, 95% confidence interval [CI] -0.01 to 0.12). In adjusted analyses, participants with insomnia symptoms and increased cTnI were at increased risk of the composite endpoint (hazard ratio 1.71, 95% CI 1.04-2.79) compared to participants with insomnia symptoms and low cTnI. In the general population, insomnia symptoms are not associated with biochemical evidence of subclinical myocardial injury.
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Affiliation(s)
- Fjola D. Sigurdardottir
- Department of Cardiology, Akershus University Hospital, Lørenskog, Norway
- Cardiovascular Research Group, Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - Magnus N. Lyngbakken
- Department of Cardiology, Akershus University Hospital, Lørenskog, Norway
- Cardiovascular Research Group, Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - Kristian Hveem
- HUNT Research Centre, Department of Public Health and General Practice, Norwegian University of Science and Technology, Levanger, Norway
| | - Harald Hrubos Strøm
- Division of Surgery, department of Ear, Nose and Throat, Akershus University Hospital, Lørenskog, Norway
- University of Oslo, Medical faculty, Institute of basic medical sciences, department of behavioural sciences
| | - Helge Røsjø
- Cardiovascular Research Group, Institute of Clinical Medicine, University of Oslo, Oslo, Norway
- Division of Research and Innovation, Akershus University Hospital, Lørenskog, Norway
| | - Susan Redline
- Division of Sleep and Circadian Disorders, Departments of Medicine and Neurology, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Torbjørn Omland
- Department of Cardiology, Akershus University Hospital, Lørenskog, Norway
- Cardiovascular Research Group, Institute of Clinical Medicine, University of Oslo, Oslo, Norway
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Sigurdardottir FD, Lyngbakken MN, Holmen OL, Dalen H, Hveem K, Røsjø H, Omland T. Relative Prognostic Value of Cardiac Troponin I and C-Reactive Protein in the General Population (from the Nord-Trøndelag Health [HUNT] Study). Am J Cardiol 2018; 121:949-955. [PMID: 29496193 DOI: 10.1016/j.amjcard.2018.01.004] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/09/2017] [Revised: 12/23/2017] [Accepted: 01/04/2018] [Indexed: 01/20/2023]
Abstract
C-reactive protein and cardiac troponin I measured with high-sensitivity assays (high-sensitivity C-reactive protein [hs-CRP] and high-sensitivity troponin I [hs-TnI]) have been associated with risk of fatal and nonfatal cardiovascular events in the general population. The relative prognostic merits of hs-CRP and hs-TnI, and whether these markers of inflammation and subclinical myocardial injury provide incremental information to established cardiovascular risk prediction models, remain unclear. hs-CRP and hs-TnI were measured in 9,005 participants from the prospective observational Nord-Trøndelag Health (HUNT) study. All study subjects were free from known cardiovascular disease at baseline. During a median follow-up period of 13.9 years, 733 participants reached the composite end point of hospitalization for acute myocardial infarction or heart failure, or cardiovascular death. In adjusted models, increased hs-TnI concentrations (>10 ng/L for women and >12 ng/L for men) were associated with the incidence of the composite end point (hazard ratio 3.61, 95% confidence interval [CI] 2.89 to 4.51]), whereas the risk associated with increased hs-CRP concentrations (>3 mg/L for both genders) appeared to be weaker (HR 1.71, 95% CI 1.40 to 2.10). The addition of hs-TnI to established cardiovascular risk prediction models led to a net reclassification improvement of 0.35 (95% CI 0.27 to 0.42), superior to that of hs-CRP (0.21, 95% CI 0.13 to 0.28). The prognostic accuracy of hs-TnI, assessed by C-statistics, was significantly greater than that of hs-CRP (0.753, 95% CI 0.735 to 0.772, vs 0.644, 95% CI 0.625 to 0.663). In conclusion, in subjects from the general population without a history of cardiovascular disease, hs-TnI provides prognostic information superior to that provided by hs-CRP and may therefore be a preferred marker for targeted prevention.
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Affiliation(s)
- Fjola D Sigurdardottir
- Division of Medicine, Akershus University Hospital, Lørenskog, Norway and Center for Heart Failure Research, Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - Magnus N Lyngbakken
- Division of Medicine, Akershus University Hospital, Lørenskog, Norway and Center for Heart Failure Research, Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - Oddgeir L Holmen
- HUNT Research Centre, Department of Public Health and General Practice, Norwegian University of Science and Technology, Levanger, Norway; K.G. Jebsen Center for Genetic Epidemiology, Department of Public Health, NTNU, Norwegian University of Science and Technology, Trondheim, Norway
| | - Håvard Dalen
- Department of Medicine, Levanger Hospital, Nord-Trøndelag Hospital Trust, Levanger, Norway; Department of Circulation and Medical Imaging, Norwegian University of Science and Technology, Trondheim, Norway; Department of Cardiology, St. Olav's University Hospital, Trondheim, Norway
| | - Kristian Hveem
- HUNT Research Centre, Department of Public Health and General Practice, Norwegian University of Science and Technology, Levanger, Norway
| | - Helge Røsjø
- Division of Medicine, Akershus University Hospital, Lørenskog, Norway and Center for Heart Failure Research, Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - Torbjørn Omland
- Division of Medicine, Akershus University Hospital, Lørenskog, Norway and Center for Heart Failure Research, Institute of Clinical Medicine, University of Oslo, Oslo, Norway.
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