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Wang T, Wu J, Qin F, Jiang H, Xiao X, Huang Z. Computational modeling for the quantitative assessment of cardiac autonomic response to orthostatic stress. Physiol Meas 2024; 45:075009. [PMID: 39013397 DOI: 10.1088/1361-6579/ad63ee] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2024] [Accepted: 07/16/2024] [Indexed: 07/18/2024]
Abstract
Objective.The autonomic nervous system (ANS) plays a critical role in regulating not only cardiac functions but also various other physiological processes, such as respiratory rate, digestion, and metabolic activities. The ANS is divided into the sympathetic and parasympathetic nervous systems, each of which has distinct but complementary roles in maintaining homeostasis across multiple organ systems in response to internal and external stimuli. Early detection of ANS dysfunctions, such as imbalances between the sympathetic and parasympathetic branches or impairments in the autonomic regulation of bodily functions, is crucial for preventing or slowing the progression of cardiovascular diseases. These dysfunctions can manifest as irregularities in heart rate, blood pressure regulation, and other autonomic responses essential for maintaining cardiovascular health. Traditional methods for analyzing ANS activity, such as heart rate variability (HRV) analysis and muscle sympathetic nerve activity recording, have been in use for several decades. Despite their long history, these techniques face challenges such as poor temporal resolution, invasiveness, and insufficient sensitivity to individual physiological variations, which limit their effectiveness in personalized health assessments.Approach.This study aims to introduce the open-loop Mathematical Model of Autonomic Regulation of the Cardiac System under Supine-to-stand Maneuver (MMARCS) to overcome the limitations of existing ANS analysis methods. The MMARCS model is designed to offer a balance between physiological fidelity and simplicity, focusing on the ANS cardiac control subsystems' input-output curve. The MMARCS model simplifies the complex internal dynamics of ANS cardiac control by emphasizing input-output relationships and utilizing sensitivity analysis and parameter subset selection to increase model specificity and eliminate redundant parameters. This approach aims to enhance the model's capacity for personalized health assessments.Main results.The application of the MMARCS model revealed significant differences in ANS regulation between healthy (14 females and 19 males, age: 42 ± 18) and diabetic subjects (8 females and 6 males, age: 47 ± 14). Parameters indicated heightened sympathetic activity and diminished parasympathetic response in diabetic subjects compared to healthy subjects (p < 0.05). Additionally, the data suggested a more sensitive and potentially more reactive sympathetic response among diabetic subjects (p < 0.05), characterized by increased responsiveness and intensity of the sympathetic nervous system to stimuli, i.e. fluctuations in blood pressure, leading to more pronounced changes in heart rate, these phenomena can be directly reflected by gain parameters and time response parameters of the model.Significance.The MMARCS model represents an innovative computational approach for quantifying ANS functionality. This model guarantees the accuracy of physiological modeling while reducing mathematical complexity, offering an easy-to-implement and widely applicable tool for clinical measurements of cardiovascular health, disease progression monitoring, and home health monitoring through wearable technology.
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Affiliation(s)
- Tao Wang
- University of Chinese Academy of Sciences, Beijing 101408, People's Republic of China
| | - JianKang Wu
- CAS Institute of Healthcare Technologies, Nanjing 210000, People's Republic of China
| | - Fei Qin
- University of Chinese Academy of Sciences, Beijing 101408, People's Republic of China
| | - Hong Jiang
- Department of Integrative Cardiology, National Center for Integrative Medicine, China-Japan Friendship Hospital, Beijing 100029, People's Republic of China
| | - Xiang Xiao
- Department of Integrative Cardiology, National Center for Integrative Medicine, China-Japan Friendship Hospital, Beijing 100029, People's Republic of China
| | - ZhiPei Huang
- University of Chinese Academy of Sciences, Beijing 101408, People's Republic of China
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Gross K, Brinkmann C. Why you should not skip tailored exercise interventions when using incretin mimetics for weight loss. Front Endocrinol (Lausanne) 2024; 15:1449653. [PMID: 39109078 PMCID: PMC11300307 DOI: 10.3389/fendo.2024.1449653] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/15/2024] [Accepted: 07/09/2024] [Indexed: 08/10/2024] Open
Affiliation(s)
- Katharina Gross
- Department of Preventive and Rehabilitative Sport Medicine, Institute of Cardiovascular Research and Sport Medicine, German Sport University Cologne, Cologne, Germany
| | - Christian Brinkmann
- Department of Preventive and Rehabilitative Sport Medicine, Institute of Cardiovascular Research and Sport Medicine, German Sport University Cologne, Cologne, Germany
- Department of Fitness & Health, IST University of Applied Sciences, Düsseldorf, Germany
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Zhang TY, Du YJ, Hou YZ, Du Q, Dou HR, Gao XM. Heart/breathing rate ratio (HBR) as a predictor of mortality in critically ill patients. Heliyon 2024; 10:e31187. [PMID: 38803872 PMCID: PMC11128922 DOI: 10.1016/j.heliyon.2024.e31187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2023] [Revised: 05/08/2024] [Accepted: 05/12/2024] [Indexed: 05/29/2024] Open
Abstract
Objectives The early prediction of death is a challenge for medical staff. We evaluated the ability of the heart/breathing rate ratio (HBR) to predict mortality. Methods This was a single-center retrospective observational study of adult patients who had fever with or without respiratory symptoms, who survived at least 2 h after visiting the hospital, and whose lactate levels and vital signs were tested. We evaluated the distribution of mortality at different HBR levels and compared HBR with lactate. Results A total of 18,872 fever clinic visits were screened, and 183 patients whose lactate levels were tested were recruited. Patients who had HBR values lower than 4·5 or higher than 5·5 had greater mortality than patients who had HBR values between 4·5 and 5·5 (21·3 % vs. 3·4 %, p = 0·003; 28·9 % vs. 3·4 %, p < 0·001, respectively). In patients whose HBR was <5, the AUROC for HBR for mortality was 0·762 (95 % CI: 0.643-0·880), and that for lactate was 0·701 (95 % CI: 0·564-0·837). In patients whose HBR was ≥5, the AUROC for HBR for mortality was 0·721 (95 % CI: 0·584-0·857), and that for lactate was 0·742 (95 % CI: 0·607-0·848). Conclusions HBR is helpful for stratifying mortality risk among critically ill patients in acute care clinics for infectious diseases.
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Affiliation(s)
- Tong Yan Zhang
- Infectious Diseases Department, Second Affiliated Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Ya Jun Du
- TEDA International Cardiovascular Hospital, Tianjin, China
| | - Ya Zhu Hou
- Department of Cardiology, First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, National Clinical Research Center for Chinese Medicine Acupuncture and Moxibustion, Tianjin, China
| | - Qian Du
- Department of Pharmacy, The Third Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Hai Rong Dou
- Infectious Diseases Department, Second Affiliated Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Xiu Mei Gao
- Tianjin State Key Laboratory of Modern Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
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Fan S, Deng Z. Chest Wall Motion Model of Cardiac Activity for Radar-Based Vital-Sign-Detection System. SENSORS (BASEL, SWITZERLAND) 2024; 24:2058. [PMID: 38610269 PMCID: PMC11014240 DOI: 10.3390/s24072058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/29/2024] [Revised: 03/18/2024] [Accepted: 03/20/2024] [Indexed: 04/14/2024]
Abstract
An increasing number of studies on non-contact vital sign detection using radar are now beginning to turn to data-driven neural network approaches rather than traditional signal-processing methods. However, there are few radar datasets available for deep learning due to the difficulty of acquiring and labeling the data, which require specialized equipment and physician collaboration. This paper presents a new model of heartbeat-induced chest wall motion (CWM) with the goal of generating a large amount of simulation data to support deep learning methods. An in-depth analysis of published CWM data collected by the VICON Infrared (IR) motion capture system and continuous wave (CW) radar system during respiratory hold was used to summarize the motion characteristics of each stage within a cardiac cycle. In combination with the physiological properties of the heartbeat, appropriate mathematical functions were selected to describe these movement properties. The model produced simulation data that closely matched the measured data as evaluated by dynamic time warping (DTW) and the root-mean-squared error (RMSE). By adjusting the model parameters, the heartbeat signals of different individuals were simulated. This will accelerate the application of data-driven deep learning methods in radar-based non-contact vital sign detection research and further advance the field.
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Affiliation(s)
| | - Zhenmiao Deng
- School of Electronics and Communication Engineering, Shenzhen Campus of Sun Yat-sen University, Shenzhen 518107, China;
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Park S, Kim HL, Park KT, Joh HS, Lim WH, Seo JB, Kim SH, Kim MA. Association between arterial stiffness and autonomic dysfunction in participants underwent treadmill exercise testing: a cross-sectional analysis. Sci Rep 2024; 14:3588. [PMID: 38351168 PMCID: PMC10864279 DOI: 10.1038/s41598-024-53681-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2023] [Accepted: 02/03/2024] [Indexed: 02/16/2024] Open
Abstract
Data on the impact of arterial stiffness on autonomic function are limited. We sought to investigate whether heart rate recovery (HRR), a predictor of autonomic function, is impaired in patients with increased arterial stiffness. A total of 475 participants (mean age 55.8 ± 11.1 years, 34.3% women) who underwent a treadmill exercise test (TET) for the evaluation of chest pain were retrospectively analyzed. All patients underwent brachial-ankle pulse wave velocity (baPWV) measurement on the same day. HRR was defined as the difference in heart rate from maximal exercise to 1 min of recovery. Participants with the lowest HRR tertile were older and had more cardiovascular risk factors than those with the highest HRR tertile. Simple correlation analysis showed that baPWV was negatively correlated with HRR (r = - 0.327, P < 0.001). In multiple linear regression analysis, there was a significant association between baPWV and HRR, even after adjusting for potential confounders (β = - 0.181, P < 0.001). In participants who underwent TET, baPWV was negatively correlated with HRR. The results of our study indicate a potential relationship between arterial stiffness and the autonomic nervous system.
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Affiliation(s)
- Sungjoon Park
- Division of Cardiology, Department of Internal Medicine, Boramae Medical Center, Seoul National University College of Medicine, 20 Boramae-ro 5-gil, Dongjak-gu, Seoul, 07061, Republic of Korea
| | - Hack-Lyoung Kim
- Division of Cardiology, Department of Internal Medicine, Boramae Medical Center, Seoul National University College of Medicine, 20 Boramae-ro 5-gil, Dongjak-gu, Seoul, 07061, Republic of Korea
| | - Kyung-Taek Park
- Department of Cardiology, Chung-Ang University Hospital, Seoul, Republic of Korea
| | - Hyun Sung Joh
- Division of Cardiology, Department of Internal Medicine, Boramae Medical Center, Seoul National University College of Medicine, 20 Boramae-ro 5-gil, Dongjak-gu, Seoul, 07061, Republic of Korea
| | - Woo-Hyun Lim
- Division of Cardiology, Department of Internal Medicine, Boramae Medical Center, Seoul National University College of Medicine, 20 Boramae-ro 5-gil, Dongjak-gu, Seoul, 07061, Republic of Korea
| | - Jae-Bin Seo
- Division of Cardiology, Department of Internal Medicine, Boramae Medical Center, Seoul National University College of Medicine, 20 Boramae-ro 5-gil, Dongjak-gu, Seoul, 07061, Republic of Korea
| | - Sang-Hyun Kim
- Division of Cardiology, Department of Internal Medicine, Boramae Medical Center, Seoul National University College of Medicine, 20 Boramae-ro 5-gil, Dongjak-gu, Seoul, 07061, Republic of Korea
| | - Myung-A Kim
- Division of Cardiology, Department of Internal Medicine, Boramae Medical Center, Seoul National University College of Medicine, 20 Boramae-ro 5-gil, Dongjak-gu, Seoul, 07061, Republic of Korea.
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Yang Y, He L, Liu P, Wang J, Yang N, Li Z, Ping F, Xu L, Li W, Zhang H, Li Y. Impact of a dual glucose-dependent insulinotropic peptide/glucagon-like peptide-1 receptor agonist tirzepatide on heart rate among patients with type 2 diabetes: A systematic review and pairwise and network meta-analysis. Diabetes Obes Metab 2024; 26:548-556. [PMID: 37860884 DOI: 10.1111/dom.15342] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/01/2023] [Revised: 10/07/2023] [Accepted: 10/07/2023] [Indexed: 10/21/2023]
Abstract
AIMS To evaluate the impact of a dual glucose-dependent insulinotropic peptide (GIP) and glucagon-like peptide-1 (GLP-1) receptor agonist tirzepatide (TZP), and its potential dose-response effect, on heart rate. METHODS Articles were searched from PubMed, Web of Science, Embase, Cochrane Library, and clinical trials registries (ClinicalTrials.gov) databases. Randomized controlled trials (RCTs) comparing TZP at doses of 5, 10 and 15 mg in adults with type 2 diabetes were included. Six study arms were summarized from original research (TZP 5, 10 and 15 mg, GLP-1 receptor agonists [GLP-1RAs], insulin, placebo). The GLP-1RA and non-GLP-1RA groups were combined to form a control group. Two reviewers independently extracted data and assessed the quality of each study. Mean differences (MDs) were calculated as effect estimates for continuous outcomes. Pairwise meta-analyses and network meta-analyses were conducted. The study protocol was prospectively registered (PROSPERO ID: CRD42023418551). RESULTS Eight articles were included in this systematic review and meta-analysis. The mean baseline heart rate ranged from 65.2 to 75.7 beats per minute. Pairwise meta-analysis showed that, compared with combined the control group, there were significantly greater increases in heart rates in the TZP group (MD 1.82, 95% confidence interval [CI] 0.75, 2.89). Similar significant rises were identified when comparing TZP with GLP-1RAs and non-GLP-1RAs (GLP-1 RAs: MD 2.29, 95% CI 1.00, 3.59; non-GLP-1RAs: MD 1.58, 95% CI 0.26, 2.91). TZP 5 mg was associated with smaller increases in heart rates compared to TZP 10 mg and TZP 15 mg (TZP 10 mg: MD -0.97, 95% CI -1.79, -0.14; TZP 15 mg: MD -2.57, 95% CI -3.79, -1.35). TZP 10 mg increased heart rate less than TZP 15 mg (MD -1.5, 95% CI -2.38, -0.82). Network meta-analysis indicated that TZP 15 mg was associated with significant increases in heart rate compared with TZP 5 mg (MD 2.53, 95% CI 1.43, 3.62), TZP 10 mg (MD 1.44, 95% CI 0.35, 2.53), GLP-1RAs (MD 3.46, 95% CI 1.67, 5.25), insulin (MD 2.86, 95% CI 1.32, 4.41) and placebo (MD 2.96, 95% CI 1.36, 4.57). CONCLUSIONS Our study showed not only that there was a greater increase in heart rate in the TZP group than in the control, GLP-1RA and non-GLP-1RA groups, but also that the 15-mg dose of TZP had the strongest impact on increasing heart rates compared with the other five inventions, with a TZP dose-response impact on heart rate. Further research on the effects of TZP treatment-related increases in heart rate is required.
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Affiliation(s)
- Yucheng Yang
- Department of Endocrinology, Key Laboratory of Endocrinology of National Health Commission, Translation Medicine Center, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
- Diabetes Research Center of Chinese Academy of Medical Sciences, Beijing, China
| | - Liyun He
- Department of Endocrinology, Key Laboratory of Endocrinology of National Health Commission, Translation Medicine Center, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
- Diabetes Research Center of Chinese Academy of Medical Sciences, Beijing, China
| | - Peng Liu
- Department of Endocrinology, Key Laboratory of Endocrinology of National Health Commission, Translation Medicine Center, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
- The First Affiliated Hospital and College of Clinical Medicine of Henan University of Science and Technology, Luoyang, China
| | - Jialu Wang
- Department of Endocrinology, Key Laboratory of Endocrinology of National Health Commission, Translation Medicine Center, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
- Diabetes Research Center of Chinese Academy of Medical Sciences, Beijing, China
| | - Na Yang
- Department of Endocrinology, Key Laboratory of Endocrinology of National Health Commission, Translation Medicine Center, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
- Diabetes Research Center of Chinese Academy of Medical Sciences, Beijing, China
| | - Ziyi Li
- Department of Endocrinology, Key Laboratory of Endocrinology of National Health Commission, Translation Medicine Center, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
- Diabetes Research Center of Chinese Academy of Medical Sciences, Beijing, China
| | - Fan Ping
- Department of Endocrinology, Key Laboratory of Endocrinology of National Health Commission, Translation Medicine Center, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
- Diabetes Research Center of Chinese Academy of Medical Sciences, Beijing, China
| | - Lingling Xu
- Department of Endocrinology, Key Laboratory of Endocrinology of National Health Commission, Translation Medicine Center, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
- Diabetes Research Center of Chinese Academy of Medical Sciences, Beijing, China
| | - Wei Li
- Department of Endocrinology, Key Laboratory of Endocrinology of National Health Commission, Translation Medicine Center, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
- Diabetes Research Center of Chinese Academy of Medical Sciences, Beijing, China
| | - Huabing Zhang
- Department of Endocrinology, Key Laboratory of Endocrinology of National Health Commission, Translation Medicine Center, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
- Diabetes Research Center of Chinese Academy of Medical Sciences, Beijing, China
| | - Yuxiu Li
- Department of Endocrinology, Key Laboratory of Endocrinology of National Health Commission, Translation Medicine Center, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
- Diabetes Research Center of Chinese Academy of Medical Sciences, Beijing, China
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O'Dowd A, Hirst RJ, Setti A, Kenny RA, Newell FN. Individual differences in seated resting heart rate are associated with multisensory perceptual function in older adults. Psychophysiology 2024; 61:e14430. [PMID: 37675755 DOI: 10.1111/psyp.14430] [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: 01/05/2023] [Revised: 08/09/2023] [Accepted: 08/16/2023] [Indexed: 09/08/2023]
Abstract
There is evidence that cardiovascular function can influence sensory processing and cognition, which are known to change with age. However, whether the precision of unisensory and multisensory temporal perception is influenced by cardiovascular activity in older adults is uncertain. We examined whether seated resting heart rate (RHR) was associated with unimodal visual and auditory temporal discrimination as well as susceptibility to the audio-visual Sound Induced Flash Illusion (SIFI) in a large sample of older adults (N = 3232; mean age = 64.17 years, SD = 7.74, range = 50-93; 56% female) drawn from The Irish Longitudinal Study on Ageing (TILDA). Faster seated RHR was associated with better discretization of two flashes (but not two beeps) and increased SIFI susceptibility when the audio-visual stimuli were presented close together in time but not at longer audio-visual temporal offsets. Our findings suggest a significant relationship between cardiovascular activity and the precision of visual and audio-visual temporal perception in older adults, thereby providing novel evidence for a link between cardiovascular function and perceptual function in aging.
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Affiliation(s)
- Alan O'Dowd
- School of Psychology and Institute of Neuroscience, Trinity College Dublin, Dublin, Ireland
- The Irish Longitudinal Study on Ageing, Trinity College Dublin, Dublin, Ireland
| | - Rebecca J Hirst
- School of Psychology and Institute of Neuroscience, Trinity College Dublin, Dublin, Ireland
- The Irish Longitudinal Study on Ageing, Trinity College Dublin, Dublin, Ireland
| | - Annalisa Setti
- The Irish Longitudinal Study on Ageing, Trinity College Dublin, Dublin, Ireland
- School of Applied Psychology, University College Cork, Cork, Ireland
| | - Rose Anne Kenny
- The Irish Longitudinal Study on Ageing, Trinity College Dublin, Dublin, Ireland
- Mercer Institute for Successful Ageing, St. James Hospital, Dublin, Ireland
| | - Fiona N Newell
- School of Psychology and Institute of Neuroscience, Trinity College Dublin, Dublin, Ireland
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Brignole M, Groppelli A, Russo V, Fedorowski A, van Dijk G, Alboni P. The Rate of Asystolic Reflex Syncope Is Not Influenced by Age. JACC Clin Electrophysiol 2023:S2405-500X(23)00901-5. [PMID: 38243997 DOI: 10.1016/j.jacep.2023.11.021] [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: 09/26/2023] [Revised: 11/17/2023] [Accepted: 11/20/2023] [Indexed: 01/22/2024]
Abstract
BACKGROUND The head-up tilt test (HUT) and other evidence suggest that the vagal effect on the heart decreases with age. OBJECTIVES The main aim of the study was to assess whether this age effect also affects the rate of asystole in spontaneous reflex syncope (RS). METHOD We performed an analysis of pooled individual data from 4 studies that recruited patients ≥40 years of age affected by certain or suspected RS who received an implantable loop recorder (ILR) and reported follow-up data on syncope recurrence. We assessed the presence of asystolic syncope of >3 seconds or nonsyncopal asystole of >6 seconds recorded by ILR and compared the findings to tilt test results on the same patients. RESULTS A total of 1,046 patients received ILR because of unexplained syncope. Of these, 201 (19.2%) had a documentation of an asystolic event of 10-second (Q1-Q3: 6- to 15-second) duration. They were subdivided in 3 age tertiles: ≤60 years (n = 64), 61 to 72 years (n = 72), and ≥73 years (n = 65). The rate of asystolic events was similar in the 3 subgroups (50.1%, 50.1%, and 49.2%, respectively; P = 0.99). Conversely, the rate of asystolic syncope induced during HUT (performed in 169 of 201) was greatly age dependent (31.0%, 12.1%, and 11.1% in increasing age tertiles, respectively; P = 0.009). CONCLUSIONS The rate of the spontaneous asystolic form of RS documented by ILR is constant at any age >40 years. Conversely, the rate of asystolic syncope induced by HUT is higher in younger patients and decreases with age. The contrasting results between spontaneous and tilt-induced events cast doubt on the concept that asystole in RS is less common in older patients.
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Affiliation(s)
- Michele Brignole
- IRCCS Istituto Auxologico Italiano, Faint and Fall Research Centre, Ospedale San Luca, Milan, Italy
| | - Antonella Groppelli
- IRCCS Istituto Auxologico Italiano, Faint and Fall Research Centre, Ospedale San Luca, Milan, Italy.
| | - Vincenzo Russo
- Cardiology and Syncope Unit, Department of Translational Medical Sciences, University of Campania Luigi Vanvitelli, Monaldi Hospital, Naples, Italy
| | - Artur Fedorowski
- Department of Cardiology, Karolinska University Hospital, Solna, Sweden; Department of Medicine, Karolinska Institute, Solna, Sweden; Department of Clinical Sciences, Lund University, Malmö, Sweden
| | - Gert van Dijk
- Department of Neurology, Leiden University Medical Centre, Leiden, the Netherlands
| | - Paolo Alboni
- Section of Cardiology, Ospedale Privato Quisisana, Ferrara, Italy
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Dasa O, Ruzieh M. Editorial commentary: Resting heart rate and outcomes: Risk marker or risk factor? Trends Cardiovasc Med 2023; 33:516-517. [PMID: 35667637 DOI: 10.1016/j.tcm.2022.05.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Accepted: 05/31/2022] [Indexed: 11/18/2022]
Affiliation(s)
- Osama Dasa
- Department of Epidemiology, College of Public Health and Health Professions, College of Medicine, University of Florida, Gainesville, Florida; Division of Cardiovascular Medicine, Department of Medicine, Department of Cardiovascular Medicine, College of Medicine, University of Florida College of Medicine, University of Florida, 1600 SW Archer Rd, PO BOX 100288, Gainesville, Florida
| | - Mohammed Ruzieh
- Division of Cardiovascular Medicine, Department of Medicine, Department of Cardiovascular Medicine, College of Medicine, University of Florida College of Medicine, University of Florida, 1600 SW Archer Rd, PO BOX 100288, Gainesville, Florida.
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10
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Klevjer M, Rasheed H, Romundstad PR, Madssen E, Brumpton BM, Bye A. Insight into the relationship between resting heart rate and atrial fibrillation: a Mendelian randomization study. Europace 2023; 25:euad292. [PMID: 37738632 PMCID: PMC10551233 DOI: 10.1093/europace/euad292] [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: 07/03/2023] [Accepted: 09/19/2023] [Indexed: 09/24/2023] Open
Abstract
AIMS A low resting heart rate (RHR) implies a more efficient heart function and a lower risk of cardiovascular disease. However, observational studies have reported a U-shaped association between RHR and atrial fibrillation (AF). In contrast, Mendelian randomization (MR) studies have found an inverse causal association between RHR and AF. Hence, the causal nature of the relationship is not clear. The aim is to investigate the causal association and its shape between RHR on AF using linear and non-linear MR (NLMR). METHODS AND RESULTS Linear and non-linear MR were performed on individual-level data in the Trøndelag Health Study (HUNT) and UK Biobank (UKB). HUNT consists of 69 155 individuals with 7,062 AF cases, while UKB provides data on 431 852 individuals with 20 452 AF cases. The linear MR found an inverse relationship between RHR and AF with an OR = 0.95 [95% confidence interval (CI): 0.93-0.98] and OR = 0.96 (95% CI: 0.95-0.97) per unit decrease in RHR in HUNT and UKB, respectively. The NLMR was supportive of an inverse linear relationship in both HUNT and UKB for RHR values <90 beats per minute (bpm). Several sensitivity analyses were also consistent. CONCLUSION In contrast with the current observational knowledge of RHR and AF, an inverse causal association between RHR and AF was demonstrated in both linear and non-linear MR for RHR values up to 90 bpm. Further exploring the underlying mechanisms of the genetic instrument for RHR may shed light on whether pleiotropy is biasing this association.
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Affiliation(s)
- Marie Klevjer
- Cardiac Exercise Research Group (CERG), Department of Circulation and Medical Imaging, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology (NTNU), Prinsesse Kristinas Gate 3, Trondheim 7030, Norway
- Department of Cardiology, St.Olavs Hospital, Trondheim University Hospital, Prinsesse Kristinas Gate 3, Trondheim 7030, Norway
| | - Humaira Rasheed
- K.G. Jebsen Center for Genetic Epidemiology, Department of Public Health and Nursing, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology (NTNU), Trondheim, Norway
- MRC Integrative Epidemiology Unit (IEU), Bristol Medical School, University of Bristol, Oakfield House, Oakfield Grove, Bristol, UK
- Division of Medicine and Laboratory Sciences, University of Oslo, Oslo, Norway
| | - Pål R Romundstad
- K.G. Jebsen Center for Genetic Epidemiology, Department of Public Health and Nursing, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology (NTNU), Trondheim, Norway
| | - Erik Madssen
- Cardiac Exercise Research Group (CERG), Department of Circulation and Medical Imaging, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology (NTNU), Prinsesse Kristinas Gate 3, Trondheim 7030, Norway
- Department of Cardiology, St.Olavs Hospital, Trondheim University Hospital, Prinsesse Kristinas Gate 3, Trondheim 7030, Norway
| | - Ben M Brumpton
- K.G. Jebsen Center for Genetic Epidemiology, Department of Public Health and Nursing, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology (NTNU), Trondheim, Norway
| | - Anja Bye
- Cardiac Exercise Research Group (CERG), Department of Circulation and Medical Imaging, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology (NTNU), Prinsesse Kristinas Gate 3, Trondheim 7030, Norway
- Department of Cardiology, St.Olavs Hospital, Trondheim University Hospital, Prinsesse Kristinas Gate 3, Trondheim 7030, Norway
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Garger D, Meinel M, Dietl T, Hillig C, Garzorz‐Stark N, Eyerich K, de Angelis MH, Eyerich S, Menden MP. The impact of the cardiovascular component and somatic mutations on ageing. Aging Cell 2023; 22:e13957. [PMID: 37608601 PMCID: PMC10577550 DOI: 10.1111/acel.13957] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Revised: 06/27/2023] [Accepted: 07/20/2023] [Indexed: 08/24/2023] Open
Abstract
Mechanistic insight into ageing may empower prolonging the lifespan of humans; however, a complete understanding of this process is still lacking despite a plethora of ageing theories. In order to address this, we investigated the association of lifespan with eight phenotypic traits, that is, litter size, body mass, female and male sexual maturity, somatic mutation, heart, respiratory, and metabolic rate. In support of the somatic mutation theory, we analysed 15 mammalian species and their whole-genome sequencing deriving somatic mutation rate, which displayed the strongest negative correlation with lifespan. All remaining phenotypic traits showed almost equivalent strong associations across this mammalian cohort, however, resting heart rate explained additional variance in lifespan. Integrating somatic mutation and resting heart rate boosted the prediction of lifespan, thus highlighting that resting heart rate may either directly influence lifespan, or represents an epiphenomenon for additional lower-level mechanisms, for example, metabolic rate, that are associated with lifespan.
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Affiliation(s)
- Daniel Garger
- Computational Health Center, Helmholtz MunichNeuherbergGermany
- Faculty of BiologyLudwig Maximilian UniversityMartinsriedGermany
| | - Martin Meinel
- Computational Health Center, Helmholtz MunichNeuherbergGermany
- Faculty of BiologyLudwig Maximilian UniversityMartinsriedGermany
- Department of Dermatology and AllergyTechnical University of MunichMunichGermany
| | - Tamina Dietl
- Computational Health Center, Helmholtz MunichNeuherbergGermany
- Faculty of BiologyLudwig Maximilian UniversityMartinsriedGermany
| | - Christina Hillig
- Computational Health Center, Helmholtz MunichNeuherbergGermany
- Department of MathematicsTechnical University of MunichMunichGermany
| | - Natalie Garzorz‐Stark
- Department of Dermatology and AllergyTechnical University of MunichMunichGermany
- Division of Dermatology and Venereology, Department of Medicine Solna, and Center for molecular medicineKarolinska InstitutetStockholmSweden
| | - Kilian Eyerich
- Division of Dermatology and Venereology, Department of Medicine Solna, and Center for molecular medicineKarolinska InstitutetStockholmSweden
- Department of Dermatology and Venerology, Medical SchoolUniversity of FreiburgFreiburgGermany
| | - Martin Hrabě de Angelis
- Institute of Experimental GeneticsHelmholtz MunichNeuherbergGermany
- Chair of Experimental Genetics, TUM School of Life SciencesTechnical University MunichFreisingGermany
- German Center for Diabetes Research (DZD)NeuherbergGermany
| | - Stefanie Eyerich
- Center for Allergy and Environment (ZAUM)Technical University MunichMunichGermany
- Institute for Allergy ResearchHelmholtz Munich, NeuherbergNeuherbergGermany
| | - Michael P. Menden
- Computational Health Center, Helmholtz MunichNeuherbergGermany
- Faculty of BiologyLudwig Maximilian UniversityMartinsriedGermany
- German Center for Diabetes Research (DZD)NeuherbergGermany
- Department of Biochemistry and PharmacologyUniversity of MelbourneParkvilleVictoriaAustralia
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Luo M, Pauly T, Broen T, Ashe MC, Murphy RA, Linden W, Madden KM, Gerstorf D, Hoppmann CA. Daily Affect and Daily Prospective Memory in People after Stroke and Their Partners: The Moderating Role of Resting Heart Rate. Gerontology 2023; 69:1245-1258. [PMID: 37604129 DOI: 10.1159/000533577] [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: 01/27/2023] [Accepted: 07/31/2023] [Indexed: 08/23/2023] Open
Abstract
INTRODUCTION Experimental research suggests that affect may influence prospective memory performance, but real-life evidence on affect-prospective memory associations is limited. Moreover, most studies have examined the valence dimension of affect in understanding the influence of affect on cognitive performance in daily life, with insufficient consideration of the arousal dimension. To maximize ecological validity, the current study examined the relationships between daily affect and daily prospective memory using repeated daily assessments and the role of resting heart rate on these relationships. We examined both valence and arousal of daily affect by categorizing affect into four dimensions: high-arousal positive affect, low-arousal positive affect, high-arousal negative affect, and low-arousal negative affect. METHOD We examined existing data collected from community-dwelling couples, of which at least one partner had a stroke history. The analytic sample included 111 adults (Mage = 67.46 years, SD = 9.64; 50% women) who provided 1,274 days of data. Among the participants, 58 were living with the effects of a stroke and 53 were partners. Participants completed daily event-based prospective memory tasks (in morning and/or evening questionnaires), reported daily affect in the evening, and wore a wrist-based Fitbit device to monitor resting heart rate over 14 consecutive days. RESULTS Results from multilevel models show that, within persons, elevated high-arousal negative affect was associated with worse daily prospective memory performance. In addition, lower resting heart rate attenuated the inverse association between high-arousal negative affect and lowered prospective memory performance. We did not find significant associations of high- or low-arousal positive affect and low-arousal negative affect with daily prospective memory. DISCUSSION Our findings are in line with the resource allocation model and the cue-utilization hypothesis in that high-arousal negative affect is detrimental to daily prospective memory performance. Lower resting heart rate may buffer individuals' prospective memory performance from the influence of high-arousal negative affect. These findings are consistent with the neurovisceral integration model on heart-brain connections, highlighting the possibility that cardiovascular fitness may help maintain prospective memory into older adulthood.
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Affiliation(s)
- Minxia Luo
- University Research Priority Program (URPP) Dynamics of Healthy Aging, University of Zurich, Zurich, Switzerland
- Department of Psychology, University of Zurich, Zurich, Switzerland
| | - Theresa Pauly
- Department of Gerontology, Simon Fraser University, Vancouver, British Columbia, Canada
| | - Tiana Broen
- Department of Psychology, The University of British Columbia, Vancouver, British Columbia, Canada
| | - Maureen C Ashe
- Department of Family Practice, The University of British Columbia, Vancouver, British Columbia, Canada
- Edwin S.H. Leong Centre for Healthy Aging, The University of British Columbia, Vancouver, British Columbia, Canada
| | - Rachel A Murphy
- Cancer Control Research, BC Cancer Research Centre, Vancouver, British Columbia, Canada
- School of Population and Public Health, The University of British Columbia, Vancouver, British Columbia, Canada
| | - Wolfgang Linden
- Department of Psychology, The University of British Columbia, Vancouver, British Columbia, Canada
| | - Kenneth M Madden
- Center for Hip Health and Mobility, The University of British Columbia, Vancouver, British Columbia, Canada
- Department of Medicine, The University of British Columbia, Vancouver, British Columbia, Canada
| | - Denis Gerstorf
- Department of Psychology, Humboldt University Berlin, Berlin, Germany
| | - Christiane A Hoppmann
- Department of Psychology, The University of British Columbia, Vancouver, British Columbia, Canada
- Edwin S.H. Leong Centre for Healthy Aging, The University of British Columbia, Vancouver, British Columbia, Canada
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13
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Parker WH, Olshansky B. Autonomic modulation: Getting it "just right". Heart Rhythm O2 2023; 4:414-415. [PMID: 37361618 PMCID: PMC10288019 DOI: 10.1016/j.hroo.2023.04.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/28/2023] Open
Affiliation(s)
| | - Brian Olshansky
- Address reprint requests and correspondence: Dr Brian Olshansky, Division of Cardiology, University of Iowa Hospitals and Clinics, 200 Hawkins Drive, Iowa City, IA 52242.
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