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Wang L, Zhang P, Xue J, Ma Q, Fu Y, Ou Y, Yuan X. Variability in sleep architecture and alterations in circadian rhythms in patients with acute cerebral infarction accompanied by sleep-disordered breathing. Sleep Breath 2024:10.1007/s11325-024-03105-1. [PMID: 39012435 DOI: 10.1007/s11325-024-03105-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2023] [Revised: 06/15/2024] [Accepted: 07/01/2024] [Indexed: 07/17/2024]
Abstract
PURPOSE To continuously and dynamically monitor the sleep status of patients in the acute phase of cerebral infarction, and to investigate the characteristics of acute cerebral infarction(ACI)associated with sleep-disordered breathing (SDB), variations in sleep structure, and changes in sleep circadian rhythms. METHODS Patients with ACI within 48 h of onset who were admitted to the Department of Neurology at Kailuan General Hospital from November 2020 to December 2022 were selected. Detailed baseline information such as age, gender, smoking history, drinking history, were recorded for the selected participants. From the beginning of their hospitalization, the selected participants were monitored for their sleep status continuously for 5 days using the Intelligent Mattress-based Sleep Monitoring Platform System(IMSMPS). Based on the heart rate data obtained from the monitoring, the interdaily stability (IS) and intradaily variability (IV) of the sleep circadian rhythm were calculated. RESULTS 1,367 patients with ACI were selected. Monitoring results over 5 days indicated 147 cases (10.75%) without SDB, and 1,220 cases (89.25%) with SDB. Among the group with SDB, there were 248 cases (18.14%) with continuous mild SDB, 395 cases (28.90%) with moderate SDB, 295 cases (21.58%) with severe SDB, and 282 cases (20.63%) that fluctuated between different severity levels. Within this fluctuating group, 152 cases (53.90%) fluctuated between two severity levels, 120 cases (42.55%) between three levels, and 10 cases (3.55%) among all four levels. There were statistically significant differences (P < 0.05) in the sleep latency, sleep efficiency, non-rapid eye movement stages 1-2, rapid eye movement, proportion of non-rapid eye movement, proportion of rapid eye movement, wake after sleep onset, time out of bed, number of awakenings, respiratory variability index, and heart rate variability index among patients with ACI monitored from day 1 to 5. However, other monitored sleep structure parameters did not show statistically significant differences (P > 0.05). The coefficient of variation for all sleep monitoring parameters ranged between 14.54 and 36.57%. The IV in the SDB group was higher than in the group without SDB (P < 0.05), and the IS was lower than in the group without SDB (P < 0.05). CONCLUSION Patients in the acute phase of cerebral infarction have a high probability of accompanying SDB. The sleep structure of these patients shows significant variability based on the onset time of the stroke, and some patients experience fluctuations among different severity levels of SDB. ACI accompanied by SDB can further reduce the IS of a patient's sleep circadian rhythm and increase its IV.
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Affiliation(s)
- Lianhui Wang
- Department of Neurology, Kailuan General Hospital, affiliated with North China University of Science and Technology, Tangshan, Hebei, 063000, China
- Hebei Provincial Key Laboratory of Neurobiological Function, Tangshan, Hebei, 063000, China
- Tangshan Key Laboratory of Neurology, Tangshan, Hebei, 063000, China
| | - Pingshu Zhang
- Department of Neurology, Kailuan General Hospital, affiliated with North China University of Science and Technology, Tangshan, Hebei, 063000, China
- Hebei Provincial Key Laboratory of Neurobiological Function, Tangshan, Hebei, 063000, China
- Tangshan Key Laboratory of Neurology, Tangshan, Hebei, 063000, China
| | - Jing Xue
- Department of Neurology, Kailuan General Hospital, affiliated with North China University of Science and Technology, Tangshan, Hebei, 063000, China
- Hebei Provincial Key Laboratory of Neurobiological Function, Tangshan, Hebei, 063000, China
- Tangshan Key Laboratory of Neurology, Tangshan, Hebei, 063000, China
| | - Qian Ma
- Department of Neurology, Kailuan General Hospital, affiliated with North China University of Science and Technology, Tangshan, Hebei, 063000, China
- Hebei Provincial Key Laboratory of Neurobiological Function, Tangshan, Hebei, 063000, China
- Tangshan Key Laboratory of Neurology, Tangshan, Hebei, 063000, China
| | - Yongshan Fu
- Department of Neurology, Kailuan General Hospital, affiliated with North China University of Science and Technology, Tangshan, Hebei, 063000, China
- Hebei Provincial Key Laboratory of Neurobiological Function, Tangshan, Hebei, 063000, China
- Tangshan Key Laboratory of Neurology, Tangshan, Hebei, 063000, China
| | - Ya Ou
- Department of Neurology, Kailuan General Hospital, affiliated with North China University of Science and Technology, Tangshan, Hebei, 063000, China
- Hebei Provincial Key Laboratory of Neurobiological Function, Tangshan, Hebei, 063000, China
- Tangshan Key Laboratory of Neurology, Tangshan, Hebei, 063000, China
| | - Xiaodong Yuan
- Department of Neurology, Kailuan General Hospital, affiliated with North China University of Science and Technology, Tangshan, Hebei, 063000, China.
- Hebei Provincial Key Laboratory of Neurobiological Function, Tangshan, Hebei, 063000, China.
- Tangshan Key Laboratory of Neurology, Tangshan, Hebei, 063000, China.
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Wang L, Yuan X, Ou Y, Xue J, Ma Q, Fu Y, Zhang P. Study on the circadian rhythm and sleep state characteristics of patients with acute cerebral infarction accompanied by sleep-breathing disorders. Sleep Biol Rhythms 2024; 22:353-362. [PMID: 38962800 PMCID: PMC11217207 DOI: 10.1007/s41105-024-00516-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Accepted: 02/07/2024] [Indexed: 07/05/2024]
Abstract
There is limited research on the circadian rhythm and sleep state in patients with acute cerebral infarction (ACI) accompanied by sleep-breathing disorders (SDB). This study aims to provide a scientific basis for individualized diagnosis and treatment for stroke-related SDB patients. The SC-500 sleep monitor was used to continuously monitor 1367 ACI patients over 5 days. Based on the apnea-hypopnea index (AHI), patients were divided into non-SDB group (normal) and SDB group (mild, moderate, severe, fluctuating). Interdaily stability (IS) and intradaily variability (IV) were calculated through heart rate monitoring, and sleep states and their correlations were analyzed. Compared to the non-SDB group, patients with moderate-to-severe ACI accompanied by SDB showed decreased IS, increased IV, and sleep fragmentation. Significant statistical differences were observed in total sleep time (TST), rapid eye movement latency (REML), sleep efficiency (SE), non-rapid eye movement stages 1-2 (NREM stages1-2), non-rapid eye movement stages 3-4 (NREM stages 3-4), proportion of non-rapid eye movement (NREM%), wake after sleep onset (WASO), and number of awakenings (NOA) between the SDB group and the non-SDB group (P < 0.05). AHI showed a strong negative correlation with IS and a strong positive correlation with IV. AHI was positively correlated with sleep latency (SL), REML, NREM stages1-2, NREM%, proportion of rapid eye movement (REM%), WASO, time out of bed (TOB), and NOA, and negatively correlated with TST, SE, NREM stages 3-4, and rapid eye movement (REM), all with statistical significance (P < 0.05). There were significant statistical differences in the Mini-Mental State Examination (MMSE) between patients with and without SDB, and among mild, moderate, severe, and fluctuating groups (P < 0.05). Patients with moderate-to-severe ACI accompanied by SDB are more likely to experience changes in circadian rhythm and sleep states, which in turn affect cognitive functions. Supplementary Information The online version contains supplementary material available at 10.1007/s41105-024-00516-1.
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Affiliation(s)
- Lianhui Wang
- Hebei North College, Zhangjiakou, 075000 Hebei China
- Neurology Department, Kailuan General Hospital, Tangshan, 063000 Hebei China
- Key Laboratory of Neurobiological Function, Tangshan, 063000 Hebei China
| | - Xiaodong Yuan
- Neurology Department, Kailuan General Hospital, Tangshan, 063000 Hebei China
- Key Laboratory of Neurobiological Function, Tangshan, 063000 Hebei China
| | - Ya Ou
- Neurology Department, Kailuan General Hospital, Tangshan, 063000 Hebei China
- Key Laboratory of Neurobiological Function, Tangshan, 063000 Hebei China
| | - Jing Xue
- Neurology Department, Kailuan General Hospital, Tangshan, 063000 Hebei China
- Key Laboratory of Neurobiological Function, Tangshan, 063000 Hebei China
| | - Qian Ma
- Neurology Department, Kailuan General Hospital, Tangshan, 063000 Hebei China
- Key Laboratory of Neurobiological Function, Tangshan, 063000 Hebei China
| | - Yongshan Fu
- Neurology Department, Kailuan General Hospital, Tangshan, 063000 Hebei China
- Key Laboratory of Neurobiological Function, Tangshan, 063000 Hebei China
| | - Pingshu Zhang
- Neurology Department, Kailuan General Hospital, Tangshan, 063000 Hebei China
- Key Laboratory of Neurobiological Function, Tangshan, 063000 Hebei China
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Wang X, Xiao X, Feng Z, Wu Y, Yang J, Chen J. A Soft Bioelectronic Patch for Simultaneous Respiratory and Cardiovascular Monitoring. Adv Healthc Mater 2024; 13:e2303479. [PMID: 38010831 DOI: 10.1002/adhm.202303479] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Revised: 11/20/2023] [Indexed: 11/29/2023]
Abstract
Sleep is critical to maintaining physical and mental health. Measuring physiological parameters to quantify sleep quality without uncomfortable user experience remains highly desired but a challenge. Here, this work develops a soft bioelectronic patch to perform simultaneous respiration and cardiovascular monitoring during sleep in a wearable and non-invasive manner. The soft bioelectronic patch system is mainly composed of a pressure sensor, a flexible printed circuit for signal processing, and a soft thermoplastic urethane mold for assembling different functional modules. The soft bioelectronic patch holds a sensitivity of >0.12 V kPa-1 and a remarkable low-frequency response from 0.5 to 15 Hz. It is demonstrated to continuously monitor respiration and heartbeat during the whole night, which could be harnessed for sleep monitoring and obstructive sleep apnea-hypopnea syndrome diagnosis. The reported soft bioelectronic patch represents a simple and convenient platform technology for sleep study.
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Affiliation(s)
- Xue Wang
- College of Physics and Electronic Engineering, Chongqing Normal University, Chongqing, 401331, China
- Department of Bioengineering, University of California, Los Angeles, CA 90095, USA
| | - Xiao Xiao
- Department of Bioengineering, University of California, Los Angeles, CA 90095, USA
| | - Zhiping Feng
- Department of Optoelectronic Engineering, Key Laboratory of Optoelectronic Technology and Systems, Ministry of Education, Chongqing University, Chongqing, 400044, P. R. China
| | - Yufen Wu
- College of Physics and Electronic Engineering, Chongqing Normal University, Chongqing, 401331, China
| | - Jin Yang
- Department of Optoelectronic Engineering, Key Laboratory of Optoelectronic Technology and Systems, Ministry of Education, Chongqing University, Chongqing, 400044, P. R. China
| | - Jun Chen
- Department of Bioengineering, University of California, Los Angeles, CA 90095, USA
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Sun Y, Wang F, Li S. Bidirectional relationship between 56 peripheral inflammatory regulators and sleep apnea syndrome: A Mendelian randomization study. Heart Lung 2023; 62:116-121. [PMID: 37437505 DOI: 10.1016/j.hrtlng.2023.06.023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2023] [Revised: 06/20/2023] [Accepted: 06/25/2023] [Indexed: 07/14/2023]
Abstract
BACKGROUND Peripheral inflammation plays an potential role in both pathogenesis and outcomes of sleep apnea syndrome (SAS). However, this topic has not been explored at the genetic level. OBJECTIVES The aim of the study was to investigate the genetic interaction between a total of 56 peripheral inflammatory regulators and SAS, and to further reveal the genetic association of SAS-related inflammatory regulators with several neurological disorders. METHODS Summary data for SAS, cerebral atherosclerosis, vascular dementia and peripheral concentrations of these inflammatory regulators were collected from genome-wide association studies. Instrumental variables were extracted from these data for causal inference of exposure and outcome using Two-sample Mendelian randomization methods. All analyses were performed using R (version 3.5.2). RESULTS First, of the included 56 inflammatory regulators, higher IL-25 level and lower IL-23, IL-24, IL-36γ and MIP-1a levels in peripheral circulation significantly increased the risk of SAS (P<0.05). Second, SAS significantly decreased the peripheral levels of IL-17A, IL-23, IL-27, IL-36α and TRAIL (P<0.05). Third, there was no genetic relationship between SAS and other inflammatory regulators (P>0.05). Fourth, in the SAS-related inflammatory regulators mentioned above, decreased levels of IL-17A and IL-27 in peripheral circulation were significantly associated with the increased risk of cerebral atherosclerosis, and decreased level of TRAIL promoted the elevation of vascular dementia risk (P<0.05). CONCLUSION There was a interaction between peripheral inflammation and SAS at the genetic level. Furthermore, peripheral inflammation might involved in the mechanism for SAS causing some neurological diseases mentioned above.
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Affiliation(s)
- Yiran Sun
- School of Nursing, Anhui Medical University, Hefei 230601, Anhui Province, China; Operating room, Anhui Provincial Cancer Hospital, Hefei 230031, Anhui Province, China
| | - Feng Wang
- Department of Gastroenterology, Tianjin Medical University General Hospital, Tianjin 300052, China
| | - Shuwen Li
- School of Nursing, Anhui Medical University, Hefei 230601, Anhui Province, China.
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Ann L, Lee CH, Immen R, Dyken ME, Im K. Older Age is Associated With Positional Obstructive Sleep Apnea. Am J Geriatr Psychiatry 2023; 31:943-952. [PMID: 37316373 DOI: 10.1016/j.jagp.2023.05.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/24/2023] [Revised: 05/11/2023] [Accepted: 05/21/2023] [Indexed: 06/16/2023]
Abstract
OBJECTIVES Untreated obstructive sleep apnea (OSA) is associated with cognitive dysfunction; however studies report low adherence rates to standard continuous positive airway pressure (CPAP) treatment in the elderly. Positional OSA (p-OSA) is a subset that can be cured by positional therapy of avoiding supine sleep. However, there is no well-established criteria to identify patients who could benefit from positional therapy as an alternative or adjunct to CPAP. This study investigates if older age is related to p-OSA using different diagnostic criteria. DESIGN Cross-sectional study. PARTICIPANTS Participants aged 18 years old or more who underwent polysomnography for clinical reasons at University of Iowa Hospitals and Clinics over a 1-year period from July 2011 to June 2012 were enrolled retrospectively. MEASUREMENT P-OSA was defined as a high supine-position dependency of obstructive breathing events with potential resolution of OSA in nonsupine positions [high apnea-hypopnea index on supine positions (s-AHI)/ AHI on nonsupine positions (ns0AHI) combined with ns-AHI < 5/hour]. Different cutoff points (2, 3, 5, 10, 15, 20) were applied to determine a meaningful ratio of supine-position dependency of obstructions [s-AHI/ns-AHI]. We compared the proportion of patients with p-OSA between the older age group (≥65 years old) and the propensity score (PS)-matched (upto 1:4) younger age group (<65 years old) using logistic regression analyses. RESULTS In total, 346 participants were included. The older age group had a higher s-AHI/ns-AHI ratio than the younger age group (mean 31.6 [SD 66.2] versus 9.3 [SD 17.4], median 7.3 [interquartile range [IQR], 3.0-29.6) versus 4.1 (IQR, 1.9-8.7). After PS-matching, the older age group (n = 44) had higher proportion of those with a high s-AHI/ns-AHI ratio and ns-AHI< 5/hour compared with the younger age group (n = 164). (s-AHI/ns-AHI≥10: 54.6% versus 31.7%, OR 2.44 (95% CI, 1.22-4.90); s-AHI/ns-AHI≥15: 47.7% versus 26.2%, OR 2.24 (95% CI, 1.14-4.37); s-AHI/ns-AHI≥20: 40.9% versus 19.5%, OR 2.52 (95% CI, 1.22-5.20)) CONCLUSION: Older patients with OSA are more likely to have severe position dependent OSA, that is potentially more treatable with positional therapy. Thus, clinicians treating older, cognitively impaired geriatric patients unable to tolerate CPAP therapy should consider positional therapy as an adjunct or alternative.
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Affiliation(s)
- Lydia Ann
- Psychiatry and Behavioral Science (LA), University of California Los Angeles, CA
| | - Chang-Hoon Lee
- Department of Psychiatry and Human Behavior (CHL, KBI), University of California, Irvine, CA; Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine (CHL), Seoul National University Hospital, Seoul, Republic of Korea
| | - Rachel Immen
- Carle BroMenn Medical Center (RI), Bloomington, IL
| | - Mark Eric Dyken
- The Department of Neurology (MED), University of Iowa Hospitals and Clinics, Iowa City, IA
| | - KyoungBin Im
- Department of Psychiatry and Human Behavior (CHL, KBI), University of California, Irvine, CA.
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Benjamin SE, Gamaldo CE. Letter to the Editor on "Leveraging Biomedical Engineering Engineers to Improve Obstructive Sleep Apnea (OSA) Care for Our Stroke Patients". IEEE JOURNAL OF TRANSLATIONAL ENGINEERING IN HEALTH AND MEDICINE 2023; 11:536-537. [PMID: 38059064 PMCID: PMC10697293 DOI: 10.1109/jtehm.2023.3318930] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Accepted: 09/20/2023] [Indexed: 12/08/2023]
Abstract
Obstructive sleep apnea (OSA), a condition of recurring, episodic complete or upper airway collapse, is a common disorder, affecting an estimated 17.4% of women and 33.9% of men in the United States [1]. The first line treatment for OSA is Continuous Positive Airway Pressure (CPAP) therapy, a medical device that delivers adequate airflow and oxygenation during sleep by way of a tube that connects an air compressor to a face mask that can fit over the nose, under the nose, or over the nose and mouth.
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Affiliation(s)
- Sara E. Benjamin
- Neurology DepartmentThe Johns Hopkins School of MedicineBaltimoreMD21287USA
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Sawadogo W, Adera T, Alattar M, Perera R, Burch JB. Association Between Insomnia Symptoms and Trajectory With the Risk of Stroke in the Health and Retirement Study. Neurology 2023; 101:e475-e488. [PMID: 37286360 PMCID: PMC10401688 DOI: 10.1212/wnl.0000000000207449] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Accepted: 04/10/2023] [Indexed: 06/09/2023] Open
Abstract
BACKGROUND AND OBJECTIVES Insomnia is a common condition affecting more than a third of the US population. However, the link between insomnia symptoms and stroke is understudied and the underlying mechanism remains unclear. This study aimed to investigate the relationship between insomnia symptoms and the incidence of stroke. METHODS The Health and Retirement Study, a survey of Americans older than 50 years and their spouses, from 2002 to 2020 was used as the data source. Only those who were stroke-free at baseline were included in this study. The exposure variable was insomnia symptoms and was derived from self-reported sleep-related factors including difficulty initiating sleep, difficulty maintaining sleep, waking up too early, and nonrestorative sleep. Repeated-measures latent class analysis was used to identify insomnia trajectories over time. To investigate the relationship between insomnia symptoms and stroke events reported during the follow-up period, Cox proportional hazards regression models were used. Mediation analyses of comorbidities were performed using causal mediation within a counterfactual framework. RESULTS A total of 31,126 participants were included with a mean follow-up of 9 years. The mean age was 61 years (SD = 11.1) and 57% were females. Insomnia symptom trajectories remained constant over time. Compared with those with no insomnia symptoms, an increased risk of stroke was observed for those with insomnia symptom scores ranging from 1 to 4 and 5 to 8 (hazard ratio (HR) = 1.16, 95% confidence interval (CI) 1.02-1.33) and (HR = 1.51, 95% CI 1.29-1.77), respectively, indicating a dose-response relationship. The association was stronger in participants younger than 50 years (HR = 3.84, 95% CI 1.50-9.85) than in those aged 50 years and older (HR = 1.38, 95% CI 1.18-1.62), comparing those with insomnia symptoms ranging from 5 to 8 with those with no insomnia symptoms. This association was mediated by diabetes, hypertension, heart disease, and depression. DISCUSSION Insomnia symptoms were associated with an increased risk of stroke, especially in adults younger than 50 years, and the risk was mediated by certain comorbidities. Increased awareness and management of insomnia symptoms may contribute to the prevention of stroke occurrence.
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Affiliation(s)
- Wendemi Sawadogo
- From the Division of Epidemiology (W.S., T.A., J.B.B.), Department of Family Medicine and Population Health, and Division of Adult Neurology (M.A.), Sleep Medicine, Vascular Neurology, Department of Neurology; and Department of Biostatistics (R.P.), Virginia Commonwealth University, School of Medicine, Richmond.
| | - Tilahun Adera
- From the Division of Epidemiology (W.S., T.A., J.B.B.), Department of Family Medicine and Population Health, and Division of Adult Neurology (M.A.), Sleep Medicine, Vascular Neurology, Department of Neurology; and Department of Biostatistics (R.P.), Virginia Commonwealth University, School of Medicine, Richmond
| | - Maha Alattar
- From the Division of Epidemiology (W.S., T.A., J.B.B.), Department of Family Medicine and Population Health, and Division of Adult Neurology (M.A.), Sleep Medicine, Vascular Neurology, Department of Neurology; and Department of Biostatistics (R.P.), Virginia Commonwealth University, School of Medicine, Richmond
| | - Robert Perera
- From the Division of Epidemiology (W.S., T.A., J.B.B.), Department of Family Medicine and Population Health, and Division of Adult Neurology (M.A.), Sleep Medicine, Vascular Neurology, Department of Neurology; and Department of Biostatistics (R.P.), Virginia Commonwealth University, School of Medicine, Richmond
| | - James B Burch
- From the Division of Epidemiology (W.S., T.A., J.B.B.), Department of Family Medicine and Population Health, and Division of Adult Neurology (M.A.), Sleep Medicine, Vascular Neurology, Department of Neurology; and Department of Biostatistics (R.P.), Virginia Commonwealth University, School of Medicine, Richmond
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Wallace ML, Mentch L, Wheeler BJ, Tapia AL, Richards M, Zhou S, Yi L, Redline S, Buysse DJ. Use and misuse of random forest variable importance metrics in medicine: demonstrations through incident stroke prediction. BMC Med Res Methodol 2023; 23:144. [PMID: 37337173 PMCID: PMC10280951 DOI: 10.1186/s12874-023-01965-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Accepted: 06/06/2023] [Indexed: 06/21/2023] Open
Abstract
BACKGROUND Machine learning tools such as random forests provide important opportunities for modeling large, complex modern data generated in medicine. Unfortunately, when it comes to understanding why machine learning models are predictive, applied research continues to rely on 'out of bag' (OOB) variable importance metrics (VIMPs) that are known to have considerable shortcomings within the statistics community. After explaining the limitations of OOB VIMPs - including bias towards correlated features and limited interpretability - we describe a modern approach called 'knockoff VIMPs' and explain its advantages. METHODS We first evaluate current VIMP practices through an in-depth literature review of 50 recent random forest manuscripts. Next, we recommend organized and interpretable strategies for analysis with knockoff VIMPs, including computing them for groups of features and considering multiple model performance metrics. To demonstrate methods, we develop a random forest to predict 5-year incident stroke in the Sleep Heart Health Study and compare results based on OOB and knockoff VIMPs. RESULTS Nearly all papers in the literature review contained substantial limitations in their use of VIMPs. In our demonstration, using OOB VIMPs for individual variables suggested two highly correlated lung function variables (forced expiratory volume, forced vital capacity) as the best predictors of incident stroke, followed by age and height. Using an organized analytic approach that considered knockoff VIMPs of both groups of features and individual features, the largest contributions to model sensitivity were medications (especially cardiovascular) and measured medical risk factors, while the largest contributions to model specificity were age, diastolic blood pressure, self-reported medical risk factors, polysomnography features, and pack-years of smoking. Thus, we reach very different conclusions about stroke risk factors using OOB VIMPs versus knockoff VIMPs. CONCLUSIONS The near-ubiquitous reliance on OOB VIMPs may provide misleading results for researchers who use such methods to guide their research. Given the rapid pace of scientific inquiry using machine learning, it is essential to bring modern knockoff VIMPs that are interpretable and unbiased into widespread applied practice to steer researchers using random forest machine learning toward more meaningful results.
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Affiliation(s)
- Meredith L Wallace
- Department of Psychiatry, University of Pittsburgh, 3811 O'Hara Street, Pittsburgh, PA, 15231, USA.
- Department of Statistics, University of Pittsburgh, Pittsburgh, PA, USA.
| | - Lucas Mentch
- Department of Statistics, University of Pittsburgh, Pittsburgh, PA, USA
| | - Bradley J Wheeler
- School of Computing and Information, University of Pittsburgh, Pittsburgh, PA, USA
| | - Amanda L Tapia
- Department of Psychiatry, University of Pittsburgh, 3811 O'Hara Street, Pittsburgh, PA, 15231, USA
| | - Marc Richards
- Department of Statistics, University of Pittsburgh, Pittsburgh, PA, USA
| | - Siyu Zhou
- Department of Statistics, University of Pittsburgh, Pittsburgh, PA, USA
| | - Lixia Yi
- Department of Statistics, University of Pittsburgh, Pittsburgh, PA, USA
| | - Susan Redline
- Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Daniel J Buysse
- Department of Psychiatry, University of Pittsburgh, 3811 O'Hara Street, Pittsburgh, PA, 15231, USA
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Gao H, Kan Z, Fang Y, Wang N, Yan W, Yang M, Song Y. Efficacy and safety of acupuncture in the treatment of stroke complicated with sleep apnea syndrome: A systematic review and meta-analysis of randomized controlled trials. Medicine (Baltimore) 2023; 102:e33241. [PMID: 37058070 PMCID: PMC10101308 DOI: 10.1097/md.0000000000033241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Accepted: 02/13/2023] [Indexed: 04/15/2023] Open
Abstract
BACKGROUND stroke patients often have a combination of sleep apnea syndrome, which is an important and modifiable risk factor for stroke prognosis. Acupuncture is one of the measures for sleep apnea syndrome, and it is also widely used in stroke. However, we are concerned that its efficacy and safety in the treatment of stroke with sleep apnea syndrome are not yet clear. METHODS This systematic review and meta-analysis was performed in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses schema and was registered with INPLASY (registration number: INPLASY202250113). The following 8 databases were searched: PubMed, Cochrane Library (CENTRAL), Embase, Web of Science, China National Knowledge Infrastructure, Chongqing VIP Information, WanFang Data, and China Biomedical Literature Database limited from the establishment of each database to May 4, 2022. Subject headings, free words, and keywords were used for retrieval. Relevant literature was supplemented by consulting other resources. We assessed the risk of bias in the included studies using the Cochrane risk of bias tool. RevMan 5.4 software (The Cochrane Collaboration, 2020) was used to perform the meta-analysis. RESULTS Six records were included, including a total of 513 participants: 256 in the experimental group and 257 in the control group. The results showed that the total effective rate (relative risk = 1.23, 95% confidence interval (CI): 1.13, 1.34, P < .00001), apnea-hypopnea index (mean difference (MD) = -8.39, 95% CI: -9.19, -7.59, P < .00001), Epworth Sleepiness Scale score (MD = -1.59, 95% CI: -2.66, -0.52, P = .004), minimal oxygen saturation (MD = 4.99, 95% CI: 3.5, 6.47, P < .00001), longest duration of apnea (MD = -7.47, 95% CI: -8.97, -5.97, P < .00001), longest duration of apnea (MD = -6.48, 95% CI: -8.60, -4.35, P < .00001), and S100β levels (standard mean difference = -1.52, 95% CI: -1.87, -1.18, P < .00001) were better in the experimental group than in the control group. Simultaneously, the effect of reducing the neuron-specific enolase level in the experimental group was comparable to that in the control group (MD = -3.40, 95% CI: -9.08, 2.29, P = .24). CONCLUSIONS Acupuncture can improve the clinical symptoms and related laboratory indicators for sleep apnea syndrome in patients with stroke. More high-quality trials remain urgently needed.
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Affiliation(s)
- Huanyu Gao
- Institute of Literature and Culture of Traditional Chinese Medicine, Shandong University of Traditional Chinese Medicine, Jinan, Shandong, China
| | - Zunqi Kan
- College of Traditional Chinese Medicine, Shandong University of Traditional Chinese Medicine, Jinan, Shandong, China
| | - Yuqing Fang
- College of Traditional Chinese Medicine, Shandong University of Traditional Chinese Medicine, Jinan, Shandong, China
| | - Ning Wang
- College of the First Clinical Medical, Shandong University of Traditional Chinese Medicine, Jinan, Shandong, China
| | - Wenli Yan
- College of Traditional Chinese Medicine, Shandong University of Traditional Chinese Medicine, Jinan, Shandong, China
| | - Mengqi Yang
- College of the First Clinical Medical, Shandong University of Traditional Chinese Medicine, Jinan, Shandong, China
| | - Yongmei Song
- Institute of Literature and Culture of Traditional Chinese Medicine, Shandong University of Traditional Chinese Medicine, Jinan, Shandong, China
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10
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Toh ZA, Cheng LJ, Wu XV, De Silva DA, Oh HX, Ng SX, He HG, Pikkarainen M. Positive airway pressure therapy for post-stroke sleep disordered breathing: a systematic review, meta-analysis and meta-regression. Eur Respir Rev 2023; 32:32/167/220169. [PMID: 36889784 PMCID: PMC10032615 DOI: 10.1183/16000617.0169-2022] [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: 08/26/2022] [Accepted: 10/24/2022] [Indexed: 03/10/2023] Open
Abstract
BACKGROUND Sleep disordered breathing (SDB) is an under-recognised independent risk factor and a potential consequence of stroke. We systematically reviewed and meta-analysed the effectiveness of positive airway pressure (PAP) therapy in improving post-stroke outcomes. METHODS We searched CENTRAL, Embase, PubMed, CINAHL, PsycINFO, Scopus, ProQuest, Web of Science and CNKI (China National Knowledge Infrastructure) for randomised controlled trials comparing PAP therapy against a control or placebo group. We evaluated the pooled effects of PAP therapy on recurrent vascular events, neurological deficit, cognition, functional independence, daytime sleepiness and depression using random effects meta-analyses. RESULTS We identified 24 studies. Our meta-analyses showed that PAP therapy reduced recurrent vascular events (risk ratio 0.47, 95% CI 0.28-0.78), and showed significant beneficial effects on neurological deficit (Hedges' g= -0.79, 95% CI -1.19- -0.39), cognition (g=0.85, 95% CI 0.04-1.65), functional independence (g=0.45, 95% CI 0.01-0.88) and daytime sleepiness (g= -0.96, 95% CI -1.56- -0.37). However, there was insignificant reduction in depression (g= -0.56, 95% CI -2.15-1.02). No publication bias was detected. CONCLUSIONS Post-stroke patients with SDB benefited from PAP therapy. Prospective trials are needed to determine the ideal initiation period and the minimum effective therapeutic dose.
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Affiliation(s)
- Zheng An Toh
- Alice Lee Centre for Nursing Studies, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
- Division of Nursing, National University Hospital, Singapore
- National University Health System, Singapore
| | - Ling Jie Cheng
- National University Health System, Singapore
- Saw Swee Hock School of Public Health, National University of Singapore, Singapore
| | - Xi Vivien Wu
- Alice Lee Centre for Nursing Studies, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
- National University Health System, Singapore
| | - Deidre Anne De Silva
- Department of Neurology, Singapore General Hospital Campus, National Neuroscience Institute, Singapore
| | - Hui Xian Oh
- Alice Lee Centre for Nursing Studies, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
- Division of Nursing, National University Hospital, Singapore
- National University Health System, Singapore
| | - Si Xian Ng
- Alice Lee Centre for Nursing Studies, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
- Division of Nursing, National University Hospital, Singapore
- National University Health System, Singapore
| | - Hong-Gu He
- Alice Lee Centre for Nursing Studies, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
- National University Health System, Singapore
| | - Minna Pikkarainen
- Department of Occupational Therapy, Prosthetics and Orthoptics, Faculty of Health Sciences and Department of Product Design, Faculty of Technology, Art and Design, Oslo Metropolitan University, Oslo, Norway
- Martti Ahtisaari Institute, University of Oulu, Oulu, Finland
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11
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Li T, Song L, Li G, Li F, Wang X, Chen L, Rong S, Zhang L. Eating habit of adding salt to foods and incident sleep apnea: a prospective cohort study. Respir Res 2023; 24:5. [PMID: 36611201 PMCID: PMC9826571 DOI: 10.1186/s12931-022-02300-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Accepted: 12/15/2022] [Indexed: 01/09/2023] Open
Abstract
BACKGROUND Previous studies have revealed that sodium-restricted diet intervention significantly decreased apnea frequency among patients with sleep apnea. However, the longitudinal association between the habit of adding salt to foods and sleep apnea in general populations is uncertain. METHODS The UK Biobank cohort study includes more than 500,000 participants aged 40 to 69 across the United Kingdom from 2006 to 2010. The frequency of adding salt to foods was collected through a touch screen questionnaire. Incident sleep apnea was ascertained by hospital inpatient records, death registries, primary care, and self-reported diagnosis. The association between the habit of adding salt to foods and incident sleep apnea was estimated using Cox proportional hazard regression models. RESULTS Among the 488,196 participants (mean age 56.5 years; 55.0% female) in this study. During a median follow-up of 12.3 years, 6394 sleep apnea events occurred. Compared to participants who never/rarely added salt to foods, those who sometimes, usually, and always added salt to foods had an 11% (hazard ratio [HR] 1.11, 95% confidence interval [CI]: 1.04 to 1.17), 15% (HR 1.15, 95% CI: 1.07 to 1.24), and 24% (HR 1.24, 95% CI: 1.12 to 1.37) higher risk for incident sleep apnea, respectively. CONCLUSIONS In this large prospective study, the habit of adding salt to foods was associated with a higher risk of incident sleep apnea. The findings support the benefits of a salt reduction program in preventing sleep apnea.
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Affiliation(s)
- Tingting Li
- Academy of Nutrition and Health, Hubei Province Key Laboratory of Occupational Hazard Identification and Control, School of Public Health, Wuhan University of Science and Technology, Wuhan, 430065, China
| | - Lin Song
- Department of Neurology, Hubei Provincial Hospital of Integrated Chinese and Western Medicine, Xinhua Hospital of Hubei University of Chinese and Western Medicine, Wuhan, 430015, China
| | - Guang Li
- Academy of Nutrition and Health, Hubei Province Key Laboratory of Occupational Hazard Identification and Control, School of Public Health, Wuhan University of Science and Technology, Wuhan, 430065, China
| | - Fengping Li
- Academy of Nutrition and Health, Hubei Province Key Laboratory of Occupational Hazard Identification and Control, School of Public Health, Wuhan University of Science and Technology, Wuhan, 430065, China
| | - Xiaoge Wang
- Department of Epidemiology, School of Public Health, Wuhan University, Wuhan, 430062, China
| | - Liangkai Chen
- Department of Nutrition and Food Hygiene, Hubei Key Laboratory of Food Nutrition and Safety, Ministry of Education Key Lab of Environment and Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Shuang Rong
- Academy of Nutrition and Health, Hubei Province Key Laboratory of Occupational Hazard Identification and Control, School of Public Health, Wuhan University of Science and Technology, Wuhan, 430065, China.
| | - Li Zhang
- Department of Neurology, Hubei Provincial Hospital of Integrated Chinese and Western Medicine, Xinhua Hospital of Hubei University of Chinese and Western Medicine, Wuhan, 430015, China.
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12
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Karapin P, Šiarnik P, Suchá B, Jurík M, Tedla M, Poddaný M, Klobučníková K, Šutovský S, Turčáni P, Kollár B. Cognition in Patients with Sleep-Disordered Breathing: Can Obstructive and Central Apneic Pauses Play a Different Role in Cognitive Impairment? LIFE (BASEL, SWITZERLAND) 2022; 12:life12081180. [PMID: 36013359 PMCID: PMC9409850 DOI: 10.3390/life12081180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Revised: 07/27/2022] [Accepted: 08/01/2022] [Indexed: 11/16/2022]
Abstract
BACKGROUND There are increasing data linking sleep apnea with cognitive impairment. We aimed to clarify the relationship between sleep-disordered breathing (SDB) and cognition. Detailed attention was assigned to the potential role of central versus obstructive apneic pauses in cognitive impairment. METHODS Patients with suspected SDB were prospectively enrolled, and a complex sleep study was performed that included overnight polysomnography. A revised version of Addenbrooke's Cognitive Examination (ACE-R) was used to assess cognition, evaluating overall cognition and individual subdomains. RESULTS A total number of 101 participants were included in the study. In multivariate binary logistic regression analysis, obstructive apnea index ([OAI], 95% CI: 1.009-1.057, p = 0.008) was the only significant contributor to the model predicting attention deficit. The proportion of N1 stage of NREM sleep was the only significant contributor to the model predicting impaired verbal fluency (95% CI: 1.004-1.081, p = 0.029). No significant differences in sleep-related indices were observed in the remaining ACE-R subdomains. CONCLUSION Except for verbal fluency and attention, we failed to find any significant association of sleep-related indices with the impairment in different cognitive subdomains. Our data suggest that impairment observed in verbal fluency is associated with a higher proportion of shallow NREM sleep, and attention deficit is associated with higher OAI. Obstructive respiratory episodes seem to play a more important role in cognitive impairment when compared to central ones.
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Affiliation(s)
- Patrik Karapin
- 1st Department of Neurology, Faculty of Medicine, Comenius University, 81499 Bratislava, Slovakia; (P.K.); (B.S.); (M.J.); (K.K.); (S.Š.); (P.T.); (B.K.)
| | - Pavel Šiarnik
- 1st Department of Neurology, Faculty of Medicine, Comenius University, 81499 Bratislava, Slovakia; (P.K.); (B.S.); (M.J.); (K.K.); (S.Š.); (P.T.); (B.K.)
- Correspondence: ; Tel.: +42-190-311-6499
| | - Bianka Suchá
- 1st Department of Neurology, Faculty of Medicine, Comenius University, 81499 Bratislava, Slovakia; (P.K.); (B.S.); (M.J.); (K.K.); (S.Š.); (P.T.); (B.K.)
| | - Matúš Jurík
- 1st Department of Neurology, Faculty of Medicine, Comenius University, 81499 Bratislava, Slovakia; (P.K.); (B.S.); (M.J.); (K.K.); (S.Š.); (P.T.); (B.K.)
| | - Miroslav Tedla
- Department of ENT and HNS, Faculty of Medicine, University Hospital Bratislava, Comenius University, 81499 Bratislava, Slovakia;
- Institute of Cancer and Genomic Sciences, University of Birmingham, Birmingham B15 2TT, UK
| | - Michal Poddaný
- Department of Neurology, General Hospital, 03101 Liptovsky Mikulas, Slovakia;
| | - Katarína Klobučníková
- 1st Department of Neurology, Faculty of Medicine, Comenius University, 81499 Bratislava, Slovakia; (P.K.); (B.S.); (M.J.); (K.K.); (S.Š.); (P.T.); (B.K.)
| | - Stanislav Šutovský
- 1st Department of Neurology, Faculty of Medicine, Comenius University, 81499 Bratislava, Slovakia; (P.K.); (B.S.); (M.J.); (K.K.); (S.Š.); (P.T.); (B.K.)
| | - Peter Turčáni
- 1st Department of Neurology, Faculty of Medicine, Comenius University, 81499 Bratislava, Slovakia; (P.K.); (B.S.); (M.J.); (K.K.); (S.Š.); (P.T.); (B.K.)
| | - Branislav Kollár
- 1st Department of Neurology, Faculty of Medicine, Comenius University, 81499 Bratislava, Slovakia; (P.K.); (B.S.); (M.J.); (K.K.); (S.Š.); (P.T.); (B.K.)
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13
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Schütz SG, Lisabeth LD, Gibbs R, Shi X, Chervin RD, Kwicklis M, Case E, Brown DL. Ten-Year Trends in Sleep-Disordered Breathing After Ischemic Stroke: 2010 to 2019 Data From the BASIC Project. J Am Heart Assoc 2022; 11:e024169. [PMID: 35156416 PMCID: PMC9245813 DOI: 10.1161/jaha.121.024169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Background Despite good evidence that the prevalence of sleep-disordered breathing (SDB) is increasing in the general population, no data are available about trends in poststroke SDB. We therefore sought to assess changes in poststroke SDB over a 10-year period (2010-2019). Methods and Results Participants in the BASIC (Brain Attack Surveillance in Corpus Christi) project were offered a home sleep apnea test to assess for SDB after stroke. SDB assessment procedures remained unchanged throughout the study period. Respiratory event index was calculated as the sum of apneas and hypopneas per hour of recording. SDB was defined as respiratory event index ≥10/h for optimal sensitivity and specificity of the home sleep apnea test device compared with in-laboratory polysomnography. Regression models were used to test associations between SDB prevalence and severity and time, with adjustment for multiple potential confounders. Among the 1215 participants who completed objective sleep apnea testing, the prevalence of SDB grew from 61% in the first year of the study to 76% in the last, with 1.1 times higher odds each year (95% CI, 1.07-1.19), after adjustment. A linear association was identified between time and respiratory event index (average annual respiratory event index increase of 0.56/h; 95% CI, 0.20/h-0.91/h), after adjustment. There was no difference in time trends by sex or ethnicity. Conclusions The prevalence and severity of SDB after ischemic stroke has increased over the past 10 years in this population-based cohort. These data highlight the need to determine whether SDB treatment improves stroke outcomes.
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Affiliation(s)
| | | | - River Gibbs
- Department of EpidemiologyUniversity of MichiganAnn ArborMI
| | - Xu Shi
- Department of BiostatisticsUniversity of MichiganAnn ArborMI
| | | | | | - Erin Case
- Department of EpidemiologyUniversity of MichiganAnn ArborMI
| | - Devin L. Brown
- Department of NeurologyUniversity of MichiganAnn ArborMI
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14
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Lapow JM, Dicpinigaitis AJ, Pammal RS, Coghill GA, Rechester O, Feldstein E, Nuoman R, Maselli K, Kodi S, Bauerschmidt A, Rosenberg JB, Yaghi S, Kaur G, Kurian C, Chong JY, Mayer SA, Gandhi CD, Al-Mufti F. Obstructive sleep apnea confers lower mortality risk in acute ischemic stroke patients treated with endovascular thrombectomy: National Inpatient Sample analysis 2010-2018. J Neurointerv Surg 2021; 14:1195-1199. [PMID: 34930802 DOI: 10.1136/neurintsurg-2021-018161] [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: 08/23/2021] [Accepted: 12/06/2021] [Indexed: 11/04/2022]
Abstract
BackgroundObstructive sleep apnea (OSA) portends increased morbidity and mortality following acute ischemic stroke (AIS). Evaluation of OSA in the setting of AIS treated with endovascular mechanical thrombectomy (MT) has not yet been evaluated in the literature. METHODS The National Inpatient Sample from 2010 to 2018 was utilized to identify adult AIS patients treated with MT. Those with and without OSA were compared for clinical characteristics, complications, and discharge disposition. Multivariable logistic regression analysis and propensity score adjustment (PA) were employed to evaluate independent associations between OSA and clinical outcome. RESULTS Among 101 093 AIS patients treated with MT, 6412 (6%) had OSA. Those without OSA were older (68.5 vs 65.6 years old, p<0.001), female (50.5% vs 33.5%, p<0.001), and non-caucasian (29.7% vs 23.7%, p<0.001). The OSA group had significantly higher rates of obesity (41.4% vs 10.5%, p<0.001), atrial fibrillation (47.1% vs 42.2%, p=0.001), hypertension (87.4% vs 78.5%, p<0.001), and diabetes mellitus (41.2% vs 26.9%, p<0.001). OSA patients treated with MT demonstrated lower rates of intracranial hemorrhage (19.1% vs 21.8%, p=0.017), treatment of hydrocephalus (0.3% vs 1.1%, p=0.009), and in-hospital mortality (9.7% vs 13.5%, p<0.001). OSA was independently associated with lower rate of in-hospital mortality (aOR 0.76, 95% CI 0.69 to 0.83; p<0.001), intracranial hemorrhage (aOR 0.88, 95% CI 0.83 to 0.95; p<0.001), and hydrocephalus (aOR 0.51, 95% CI 0.37 to 0.71; p<0.001). Results were confirmed by PA. CONCLUSIONS Our findings suggest that MT is a viable and safe treatment option for AIS patients with OSA.
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Affiliation(s)
- Justin M Lapow
- New York Medical College School of Medicine, Valhalla, New York, USA
| | | | - Rajkumar S Pammal
- New York Medical College School of Medicine, Valhalla, New York, USA
| | - Griffin A Coghill
- New York Medical College School of Medicine, Valhalla, New York, USA
| | | | - Eric Feldstein
- Neurosurgery, New York Medical College Department of Neurosurgery, Valhalla, New York, USA
| | - Rolla Nuoman
- Neurology, Westchester Medical Center, Valhalla, New York, USA
| | | | - Shyla Kodi
- New York Medical College School of Medicine, Valhalla, New York, USA.,Westchester Medical Center, Valhalla, New York, USA
| | - Andrew Bauerschmidt
- Neurology and Neurosurgery, Westchester Medical Center, Valhalla, New York, USA
| | - Jon B Rosenberg
- Neurology and Neurosurgery, Westchester Medical Center, Valhalla, New York, USA
| | - Shadi Yaghi
- Department of Neurology, Brown University, Providence, Rhode Island, USA
| | - Gurmeen Kaur
- Neurosurgery, Westchester Medical Center, Valhalla, New York, USA
| | | | - Ji Y Chong
- Neurology, Westchester Medical Center, Valhalla, New York, USA.,Neurosurgery, Westchester Medical Center, Valhalla, New York, USA
| | - Stephan A Mayer
- Neurology, Westchester Medical Center, Valhalla, New York, USA
| | - Chirag D Gandhi
- Neurosurgery, Westchester Medical Center, Valhalla, New York, USA
| | - Fawaz Al-Mufti
- Neurology and Neurosurgery, Westchester Medical Center, Valhalla, New York, USA
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15
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Boulos MI, Kamra M, Colelli DR, Kirolos N, Gladstone DJ, Boyle K, Sundaram A, Hopyan JJ, Swartz RH, Mamdani M, Loong D, Isaranuwatchai W, Murray BJ, Thorpe KE. SLEAP SMART (Sleep Apnea Screening Using Mobile Ambulatory Recorders After TIA/Stroke): A Randomized Controlled Trial. Stroke 2021; 53:710-718. [PMID: 34628939 DOI: 10.1161/strokeaha.120.033753] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND AND PURPOSE Poststroke/transient ischemic attack obstructive sleep apnea (OSA) is prevalent, linked with numerous unfavorable health consequences, but remains underdiagnosed. Reasons include patient inconvenience and costs associated with use of in-laboratory polysomnography (iPSG), the current standard tool. Fortunately, home sleep apnea testing (HSAT) can accurately diagnose OSA and is potentially more convenient and cost-effective compared with iPSG. Our objective was to assess whether screening for OSA in patients with stroke/transient ischemic attack using HSAT, compared with standard of care using iPSG, increased diagnosis and treatment of OSA, improved clinical outcomes and patient experiences with sleep testing, and was a cost-effective approach. METHODS We consecutively recruited 250 patients who had sustained a stroke/transient ischemic attack within the past 6 months. Patients were randomized (1:1) to use of (1) HSAT versus (2) iPSG. Patients completed assessments and questionnaires at baseline and 6-month follow-up appointments. Patients diagnosed with OSA were offered continuous positive airway pressure. The primary outcome was compared between study arms via an intention-to-treat analysis. RESULTS At 6 months, 94 patients completed HSAT and 71 patients completed iPSG. A significantly greater proportion of patients in the HSAT arm were diagnosed with OSA (48.8% versus 35.2%, P=0.04) compared with the iPSG arm. Furthermore, patients assigned to HSAT, compared with iPSG, were more likely to be prescribed continuous positive airway pressure (40.0% versus 27.2%), report significantly reduced sleepiness, and a greater ability to perform daily activities. Moreover, a significantly greater proportion of patients reported a positive experience with sleep testing in the HSAT arm compared with the iPSG arm (89.4% versus 31.1%). Finally, a cost-effectiveness analysis revealed that HSAT was economically attractive for the detection of OSA compared with iPSG. CONCLUSIONS In patients with stroke/transient ischemic attack, use of HSAT compared with iPSG increases the rate of OSA diagnosis and treatment, reduces daytime sleepiness, improves functional outcomes and experiences with sleep testing, and could be an economically attractive approach. REGISTRATION URL: https://www.clinicaltrials.gov; Unique identifier: NCT02454023.
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Affiliation(s)
- Mark I Boulos
- Hurvitz Brain Sciences Research Program, Sunnybrook Research Institute, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada (M.I.B., M.K., D.R.C., N.K., D.J.G., K.B., A.S., J.J.H., R.H.S., B.J.M.).,Department of Medicine, Division of Neurology, University of Toronto, Ontario, Canada. (M.I.B., D.J.G., K.B., A.S., J.J.H., R.H.S., B.J.M.).,Sleep Laboratory, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada (M.I.B., B.J.M.)
| | - Maneesha Kamra
- Hurvitz Brain Sciences Research Program, Sunnybrook Research Institute, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada (M.I.B., M.K., D.R.C., N.K., D.J.G., K.B., A.S., J.J.H., R.H.S., B.J.M.)
| | - David R Colelli
- Hurvitz Brain Sciences Research Program, Sunnybrook Research Institute, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada (M.I.B., M.K., D.R.C., N.K., D.J.G., K.B., A.S., J.J.H., R.H.S., B.J.M.)
| | - Nardin Kirolos
- Hurvitz Brain Sciences Research Program, Sunnybrook Research Institute, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada (M.I.B., M.K., D.R.C., N.K., D.J.G., K.B., A.S., J.J.H., R.H.S., B.J.M.)
| | - David J Gladstone
- Hurvitz Brain Sciences Research Program, Sunnybrook Research Institute, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada (M.I.B., M.K., D.R.C., N.K., D.J.G., K.B., A.S., J.J.H., R.H.S., B.J.M.).,Department of Medicine, Division of Neurology, University of Toronto, Ontario, Canada. (M.I.B., D.J.G., K.B., A.S., J.J.H., R.H.S., B.J.M.)
| | - Karl Boyle
- Hurvitz Brain Sciences Research Program, Sunnybrook Research Institute, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada (M.I.B., M.K., D.R.C., N.K., D.J.G., K.B., A.S., J.J.H., R.H.S., B.J.M.).,Department of Medicine, Division of Neurology, University of Toronto, Ontario, Canada. (M.I.B., D.J.G., K.B., A.S., J.J.H., R.H.S., B.J.M.).,Stroke Medicine, Beaumont Hospital, Dublin, Ireland (K.B.)
| | - Arun Sundaram
- Hurvitz Brain Sciences Research Program, Sunnybrook Research Institute, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada (M.I.B., M.K., D.R.C., N.K., D.J.G., K.B., A.S., J.J.H., R.H.S., B.J.M.).,Department of Medicine, Division of Neurology, University of Toronto, Ontario, Canada. (M.I.B., D.J.G., K.B., A.S., J.J.H., R.H.S., B.J.M.)
| | - Julia J Hopyan
- Hurvitz Brain Sciences Research Program, Sunnybrook Research Institute, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada (M.I.B., M.K., D.R.C., N.K., D.J.G., K.B., A.S., J.J.H., R.H.S., B.J.M.).,Department of Medicine, Division of Neurology, University of Toronto, Ontario, Canada. (M.I.B., D.J.G., K.B., A.S., J.J.H., R.H.S., B.J.M.)
| | - Richard H Swartz
- Hurvitz Brain Sciences Research Program, Sunnybrook Research Institute, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada (M.I.B., M.K., D.R.C., N.K., D.J.G., K.B., A.S., J.J.H., R.H.S., B.J.M.).,Department of Medicine, Division of Neurology, University of Toronto, Ontario, Canada. (M.I.B., D.J.G., K.B., A.S., J.J.H., R.H.S., B.J.M.)
| | - Muhammad Mamdani
- Li Ka Shing Knowledge Institute, St. Michael's Hospital, Unity Health Toronto, Ontario, Canada (M.M., D.L., W.I)
| | - Desmond Loong
- Institute of Health Policy, Management and Evaluation, University of Toronto, Ontario, Canada. (D.L., W.I.).,Li Ka Shing Knowledge Institute, St. Michael's Hospital, Unity Health Toronto, Ontario, Canada (M.M., D.L., W.I)
| | - Wanrudee Isaranuwatchai
- Institute of Health Policy, Management and Evaluation, University of Toronto, Ontario, Canada. (D.L., W.I.).,Li Ka Shing Knowledge Institute, St. Michael's Hospital, Unity Health Toronto, Ontario, Canada (M.M., D.L., W.I)
| | - Brian J Murray
- Hurvitz Brain Sciences Research Program, Sunnybrook Research Institute, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada (M.I.B., M.K., D.R.C., N.K., D.J.G., K.B., A.S., J.J.H., R.H.S., B.J.M.).,Department of Medicine, Division of Neurology, University of Toronto, Ontario, Canada. (M.I.B., D.J.G., K.B., A.S., J.J.H., R.H.S., B.J.M.).,Sleep Laboratory, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada (M.I.B., B.J.M.)
| | - Kevin E Thorpe
- Applied Health Research Centre & Dalla Lana School of Public Health, University of Toronto, Ontario, Canada. (K.E.T.)
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16
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Osorio RS, Martínez-García MÁ, Rapoport DM. Sleep apnoea in the elderly: a great challenge for the future. Eur Respir J 2021; 59:13993003.01649-2021. [PMID: 34561285 DOI: 10.1183/13993003.01649-2021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2021] [Accepted: 08/25/2021] [Indexed: 11/05/2022]
Abstract
Due in part to overall improvements in health, the population of elderly individuals is increasing rapidly. Similarly, obstructive sleep apnoea (OSA) is both gaining increased recognition and also increasing due to the worldwide obesity epidemic. The overlap of OSA and aging is large, but there is strong plausibility for causation in both directions: OSA is associated with pathological processes that may accelerate aging and aging related processes; aging may cause physical and neurological changes that predispose to obstructive (and central) apnoea. In addition, the common symptoms (e.g. excessive daytime somnolence, defects in memory and cognition), possible physiological consequences of OSA (e.g. accelerated cardiovascular and cerebrovascular atherosclerosis), and changes in metabolic and inflammatory markers overlap with the symptoms and associated conditions seen in aging. There is also the possibility of synergy in the effects of these symptoms and conditions on quality of life, as well as a need to separate treatable consequences of OSA from age-related complaints. Taken together, the above make it essential to review the interaction of OSA and aging, both proven and suspected. The present review examines some aspects of what is known and points to the need for further investigation of the relationships, given the large number of potentially affected subjects.
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Affiliation(s)
- Ricardo S Osorio
- Department of Psychiatry, New York University (NYU) Grossman School of Medicine, New York, New York, USA.,Clinical Research Division, Nathan Kline Institute (NKI), Orangeburg, New York, USA
| | - Miguel Ángel Martínez-García
- Respirology Department, University and Politechnic la Fe Hospital, Valencia, Valencian Community, Spain .,CIBERES de Enfermedades Respiratorias, Madrid, Spain
| | - David M Rapoport
- Division of Pulmonary, Critical Care, and Sleep Medicine, Icahn School of Medicine at Mount Sinai, New York, New York, USA
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17
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Piriyajitakonkij M, Warin P, Lakhan P, Leelaarporn P, Kumchaiseemak N, Suwajanakorn S, Pianpanit T, Niparnan N, Mukhopadhyay SC, Wilaiprasitporn T. SleepPoseNet: Multi-View Learning for Sleep Postural Transition Recognition Using UWB. IEEE J Biomed Health Inform 2021; 25:1305-1314. [PMID: 32960771 DOI: 10.1109/jbhi.2020.3025900] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Recognizing movements during sleep is crucial for the monitoring of patients with sleep disorders, and the utilization of ultra-wideband (UWB) radar for the classification of human sleep postures has not been explored widely. This study investigates the performance of an off-the-shelf single antenna UWB in a novel application of sleep postural transition (SPT) recognition. The proposed Multi-View Learning, entitled SleepPoseNet or SPN, with time series data augmentation aims to classify four standard SPTs. SPN exhibits an ability to capture both time and frequency features, including the movement and direction of sleeping positions. The data recorded from 38 volunteers displayed that SPN with a mean accuracy of 73.7 ±0.8 % significantly outperformed the mean accuracy of 59.9 ±0.7 % obtained from deep convolution neural network (DCNN) in recent state-of-the-art work on human activity recognition using UWB. Apart from UWB system, SPN with the data augmentation can ultimately be adopted to learn and classify time series data in various applications.
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18
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Zoccali C, Roumeliotis S, Mallamaci F. Sleep Apnea as a Cardiorenal Risk Factor in CKD and Renal Transplant Patients. Blood Purif 2021; 50:642-648. [PMID: 33588408 DOI: 10.1159/000513424] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Accepted: 11/27/2020] [Indexed: 11/19/2022]
Abstract
BACKGROUND Chronic kidney disease (CKD) is a public health priority of increasing concern worldwide. Sleep apnea (SA) of moderate-to-severe degree has a 3-9% prevalence in women and 10-17% in men in the general population. SUMMARY In CKD patients, the prevalence of SA parallels the decline of the GFR being 27% in CKD patients with a GFR of >60 mL/min/1.73 m2 and 57% in patients with end-stage kidney disease (ESKD). In the early CKD stages, fluid overload is probably the sole risk factor for SA in this population. At more severe CKD stages, disturbed central and peripheral chemosensitivity and the accumulation of uremic toxins might contribute to SA. Still, there is no direct evidence supporting this hypothesis in human studies. Observational studies coherently show that SA is a risk factor for CKD incidence and CKD progression as well as for cardiovascular disease and death in this population. However, there is no randomized clinical trial testing continuous positive airway pressure or other interventions documenting that attenuation of SA may have a favorable effect on renal and cardiovascular outcomes in CKD and ESKD patients. However, most likely, the causal nature of the association between SA and cardiorenal outcomes remains unproven. Renal transplantation is the most effective treatment of SA in patients with ESKD, but this disturbance re-emerges on long-term observation in this population. However, after renal transplantation, SA does not seem to be a predictor of adverse health outcomes.
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Affiliation(s)
- Carmine Zoccali
- CNR-IFC, Clinical Epidemiology of Renal Disease and Hypertension, Reggio Cal, Italy,
| | - Stefanos Roumeliotis
- Division of Nephrology and Hypertension, 1st Department of Internal Medicine, School of Medicine, AHEPA Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Francesca Mallamaci
- CNR-IFC, Clinical Epidemiology of Renal Disease and Hypertension, Reggio Cal, Italy.,Nephrology, Dialysis and Renal Transplantation Unit, Grande Ospedale Metropolitano di Reggio Cal, Reggio Cal, Italy
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19
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Xu J, Wang X, Meng F, Zhao T, Tang T, Wu W, Wang W. The role of obstructive sleep apnea on the prognosis of pulmonary embolism: a systemic review and meta-analysis. Sleep Breath 2020; 25:1419-1426. [PMID: 33236203 DOI: 10.1007/s11325-020-02258-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2020] [Revised: 11/15/2020] [Accepted: 11/18/2020] [Indexed: 11/28/2022]
Abstract
PURPOSE The relationship between obstructive sleep apnea (OSA) and pulmonary embolism (PE) has been reported by some studies but the underlying mechanism remains unclear. We aimed to systematically assess the role of OSA on the disease prognosis of PE. METHODS We searched for studies on the relationship of OSA and the prognosis of PE published up to February 2020 among PubMed, Web of Science, EMBASE, and Cochrane Library databases. Two independent reviewers conducted the process of study search and screening, quality assessment, and data extraction. Meta-analysis was carried out using RevMan 5.3. RESULTS A total of 9 articles were included, and the funnel plots suggested no evidence of publication bias among studies. The results showed that compared to PE patients without OSA, the PE patients with moderate-severe OSA were more likely to be high-risk type (OR = 1.96, 95% CI [1.14, 3.34]) and with higher index of disease severity (sPESI: OR = 2.29, 95% CI [1.50, 3.47]; PAOI%: MD = 13.52, 95% CI [7.2, 19.83]). The prevalence of recurrent PE was higher in PE patients with OSA than those without OSA (RR = 3.87, 95% CI [1.65, 9.07]). However, there was no significant difference in right ventricle to left ventricle short-axis diameter (MD = 0.08, 95% CI [- 0.06, 0.21]), length of hospital stay (MD = 1.03, 95% CI [- 1.11, 3.17]), or prevalence of deep vein thrombosis (OR = 0.87, 95% CI [0.48, 1.57]). Sensitivity and subgroup analysis showed that the pooled outcomes were stable. CONCLUSION OSA, especially moderate-severe OSA, was a risk factor for high-risk PE and recurrent PE. However, the current evidence showed that the length of hospital stay is not influenced by OSA.
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Affiliation(s)
- Jiahuan Xu
- Institute of Respiratory Medicine, Zhejiang Hospital, Hangzhou, China.,Institute of Respiratory and Critical Care Medicine, The First Hospital of China Medical University, No. 155 Nanjing North Street, Heping District, Shenyang, 110001, Liaoning, China
| | - Xingjian Wang
- Institute of Respiratory and Critical Care Medicine, The First Hospital of China Medical University, No. 155 Nanjing North Street, Heping District, Shenyang, 110001, Liaoning, China
| | - Fanqi Meng
- Institute of Respiratory and Critical Care Medicine, The First Hospital of China Medical University, No. 155 Nanjing North Street, Heping District, Shenyang, 110001, Liaoning, China
| | - Tian Zhao
- Institute of Respiratory Medicine, Zhejiang Hospital, Hangzhou, China
| | - Tingyu Tang
- Institute of Respiratory Medicine, Zhejiang Hospital, Hangzhou, China
| | - Wenjuan Wu
- Institute of Respiratory Medicine, Zhejiang Hospital, Hangzhou, China
| | - Wei Wang
- Institute of Respiratory and Critical Care Medicine, The First Hospital of China Medical University, No. 155 Nanjing North Street, Heping District, Shenyang, 110001, Liaoning, China.
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20
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Deferm S, Bertrand PB, Churchill TW, Sharma R, Vandervoort PM, Schwamm LH, Yoerger Sanborn DM. Left Atrial Mechanics Assessed Early during Hospitalization for Cryptogenic Stroke Are Associated with Occult Atrial Fibrillation: A Speckle-Tracking Strain Echocardiography Study. J Am Soc Echocardiogr 2020; 34:156-165. [PMID: 33132019 DOI: 10.1016/j.echo.2020.09.009] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Revised: 09/11/2020] [Accepted: 09/11/2020] [Indexed: 10/23/2022]
Abstract
BACKGROUND Occult atrial fibrillation (AF) is an important contributor to cryptogenic stroke, yet remains difficult to unmask at presentation. This study investigated the predictive value of left atrial (LA) mechanics by strain echocardiography during stroke hospitalization for the presence of AF as detected on early 30-day monitoring and routine clinical follow-up. METHODS Left atrial mechanics were studied by strain echocardiography in a retrospective cohort of 191 patients with cryptogenic stroke and 30-day mobile cardiac outpatient telemetry poststroke to diagnose AF. After this, AF was diagnosed via routine clinical follow-up. The independent and incremental value of measures of LA size and mechanics (i.e., strain and strain rate in the reservoir, conduit, and booster pump phase) to predict AF on top of clinical characteristics was assessed. RESULTS Of 191 patients, 15% (n = 28) developed AF, of which 10 were observed during 30-day mobile cardiac outpatient telemetry and 18 were observed at a median follow-up of 25 (interquartile range, 10-43) months. Median time from embolic stroke to strain echocardiography was 1 day (interquartile range, 1-2 days). Left atrial mechanics were significantly worse in AF (P < .05 for all), despite largely similar baseline cardiovascular risk profile. Booster pump strain rate was the strongest predictor for AF, independent of age, LA volume index, E/e', and reservoir strain (odds ratio = 2.88 per SD increase; 95% confidence interval, 1.29-6.41; P = .010). Adding LA strain reservoir strain and booster pump function significantly enhanced a multivariate model to predict AF. Freedom from AF was significantly lower in subjects with a booster pump strain rate (at stroke presentation) worse than -0.67 sec-1, as derived from receiver operator curve analysis (P < .001). CONCLUSIONS Left atrial mechanics and particularly the LA booster pump function assessed early during hospitalization for cryptogenic stroke can identify patients at greater likelihood of future diagnosis of AF. These findings could in part relate to LA mechanical stunning after spontaneous cardioversion, which-when identified by early strain echocardiography-can inform further risk stratification and decision-making.
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Affiliation(s)
- Sébastien Deferm
- Department of Cardiology, Hospital Oost-Limburg, Genk, Belgium; Faculty of Medicine and Life Sciences, Hasselt University, Diepenbeek, Belgium
| | - Philippe B Bertrand
- Division of Cardiology, Department of Medicine, Massachusetts General Hospital, Boston, Massachusetts
| | - Timothy W Churchill
- Division of Cardiology, Department of Medicine, Massachusetts General Hospital, Boston, Massachusetts
| | - Richa Sharma
- Department of Neurology, Yale University School of Medicine, New Haven, Connecticut
| | - Pieter M Vandervoort
- Department of Cardiology, Hospital Oost-Limburg, Genk, Belgium; Faculty of Medicine and Life Sciences, Hasselt University, Diepenbeek, Belgium
| | - Lee H Schwamm
- Department of Neurology, Massachusetts General Hospital, Boston, Massachusetts
| | - Danita M Yoerger Sanborn
- Division of Cardiology, Department of Medicine, Massachusetts General Hospital, Boston, Massachusetts.
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