1
|
Duca ȘT, Tudorancea I, Haba MȘC, Costache AD, Șerban IL, Pavăl DR, Loghin C, Costache-Enache II. Enhancing Comprehensive Assessments in Chronic Heart Failure Caused by Ischemic Heart Disease: The Diagnostic Utility of Holter ECG Parameters. MEDICINA (KAUNAS, LITHUANIA) 2024; 60:1315. [PMID: 39202596 PMCID: PMC11356511 DOI: 10.3390/medicina60081315] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/14/2024] [Revised: 07/31/2024] [Accepted: 08/13/2024] [Indexed: 09/03/2024]
Abstract
Background and Objectives: Chronic heart failure (CHF) caused by ischemic heart disease (IHD) is the leading cause of death worldwide and presents significant health challenges. Effective management of IHD requires prevention, early detection, and treatment to improve patient outcomes. This study aims to expand the diagnostic utility of various 24 h Holter ECG parameters, such as T-wave alternans (TWA), late ventricular potentials (LVPs), and heart rate variability (HRV) in patients with CHF caused by IHD. Additionally, we seek to explore the association between these parameters and other comorbid conditions affecting the prognosis of CHF patients. Materials and Methods: We conducted a prospective case-control study with 150 patients divided into two subgroups: 100 patients with CHF caused by IHD, and 50 patients in the control group. Data included medical history, physical examination, laboratory tests, echocardiography, and 24 h Holter monitoring. Results: Our comparative analysis demonstrated that both TWA and LVPs were significantly higher in patients with CHF compared to the control group (p < 0.01), indicating increased myocardial electrical vulnerability in CHF patients. Both time and frequency-domain HRV parameters were significantly lower in the CHF group. However, the ratio of NN50 to the total count of NN intervals (PNN50) showed a borderline significance (p = 0.06). While the low-frequency (LF) domain was significantly lower in CHF patients, the high-frequency (HF) domain did not differ significantly between groups. Acceleration and deceleration capacities were also significantly altered in CHF patients. Categorizing CHF patients by left ventricular ejection fraction (LVEF) revealed that the mean of the 5-min normal-to-normal intervals over the complete recording (SDNN Index) was significantly higher in patients with LVEF ≥ 50% compared to those with CHF with reduced EF and CHF with mildly reduced EF (p < 0.001), whereas the other HRV parameters showed no significant differences among the groups. Conclusions: Holter ECG parameters can become a reliable tool in the assessment of patients with CHF. The integration of multiple Holter ECG parameters, such as TWA, LVPs, and HRV, can significantly enhance the diagnostic assessment of CHF caused by IHD. This comprehensive approach allows for a more nuanced understanding of the patient's condition and potential outcomes.
Collapse
Affiliation(s)
- Ștefania-Teodora Duca
- Department of Internal Medicine I, Faculty of Medicine, University of Medicine and Pharmacy “Grigore T. Popa”, 700115 Iasi, Romania; (M.Ș.C.H.); (A.-D.C.); (I.-I.C.-E.)
- Department of Cardiology, “St. Spiridon” Emergency County Hospital, 700111 Iasi, Romania;
| | - Ionuț Tudorancea
- Department of Cardiology, “St. Spiridon” Emergency County Hospital, 700111 Iasi, Romania;
- Department of Morpho-Functional Science II-Physiology, University of Medicine and Pharmacy “Grigore T. Popa”, 700115 Iasi, Romania;
| | - Mihai Ștefan Cristian Haba
- Department of Internal Medicine I, Faculty of Medicine, University of Medicine and Pharmacy “Grigore T. Popa”, 700115 Iasi, Romania; (M.Ș.C.H.); (A.-D.C.); (I.-I.C.-E.)
- Department of Cardiology, “St. Spiridon” Emergency County Hospital, 700111 Iasi, Romania;
| | - Alexandru-Dan Costache
- Department of Internal Medicine I, Faculty of Medicine, University of Medicine and Pharmacy “Grigore T. Popa”, 700115 Iasi, Romania; (M.Ș.C.H.); (A.-D.C.); (I.-I.C.-E.)
- Department of Cardiovascular Rehabilitation, Clinical Rehabilitation Hospital, 700661 Iasi, Romania
| | - Ionela-Lăcrămioara Șerban
- Department of Morpho-Functional Science II-Physiology, University of Medicine and Pharmacy “Grigore T. Popa”, 700115 Iasi, Romania;
| | - D. Robert Pavăl
- Faculty of Health Sciences and Sport, University of Stirling, Stirling FK9 4LA, UK;
| | - Cătălin Loghin
- Department of Internal Medicine, Cardiology Division, University of Texas Health Science Center, Houston, TX 77030, USA;
| | - Irina-Iuliana Costache-Enache
- Department of Internal Medicine I, Faculty of Medicine, University of Medicine and Pharmacy “Grigore T. Popa”, 700115 Iasi, Romania; (M.Ș.C.H.); (A.-D.C.); (I.-I.C.-E.)
- Department of Cardiology, “St. Spiridon” Emergency County Hospital, 700111 Iasi, Romania;
| |
Collapse
|
2
|
Oursler KK, Briggs BC, Lozano AJ, Harris NM, Parashar A, Ryan AS, Marconi VC. Association of chronotropic incompetence with reduced cardiorespiratory fitness in older adults with HIV. AIDS 2024; 38:825-833. [PMID: 38578959 PMCID: PMC11003719 DOI: 10.1097/qad.0000000000003840] [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] [Indexed: 04/07/2024]
Abstract
OBJECTIVE Understanding the physiological drivers of reduced cardiorespiratory fitness in people with HIV (PWH) will inform strategies to optimize healthspan. Chronotropic incompetence is common in heart failure and associated with low cardiorespiratory fitness yet is understudied in PWH. The objective was to determine the prevalence of chronotropic incompetence and its relationship with cardiorespiratory fitness. DESIGN Participants were PWH at least 50 years of age with no prior history of heart failure or coronary heart disease who were enrolled in a randomized exercise trial. Baseline cardiopulmonary exercise testing (CPET) was used to measure cardiorespiratory fitness as peak oxygen consumption (VO2peak) and calculate the chronotropic index from heart rate values. Chronotropic incompetence was defined as an index less than 80%. RESULTS The 74 participants were on average 61 years old, 80% Black or African American, and 93% men. Chronotropic incompetence was present in 31.1%. VO2peak was significantly lower among participants with chronotropic incompetence compared with participants without chronotropic incompetence [mean (SD) ml/min/kg: 20.9 (5.1) vs. 25.0 (4.5), P = 0.001]. Linear regression showed that chronotropic incompetence and age were independent predictors of VO2peak, but smoking and comorbidity were not. The chronotropic index correlated with VO2peak (r = 0.48, P < 0.001). CONCLUSION Among older PWH without heart failure or coronary heart disease, chronotropic incompetence was present in approximately one-third of individuals and was associated with clinically relevant impaired cardiorespiratory fitness. Investigation of chronotropic incompetence in large cohorts which includes PWH and heart failure may contribute to strategies that promote healthy aging with HIV infection and offer a preclinical window for intervention.
Collapse
Affiliation(s)
- Krisann K Oursler
- Department of Medicine, Virginia Tech Carilion School of Medicine, Roanoke
- Geriatrics Extended Care, Salem Veterans Affairs Healthcare System, Salem, VA
| | - Brandon C Briggs
- Geriatrics Extended Care, Salem Veterans Affairs Healthcare System, Salem, VA
- Department of Health and Human Performance, Concordia University Chicago, Chicago, IL
| | - Alicia J Lozano
- Department of Statistics, Virginia Polytechnic Institute and State University, Roanoke, VA
| | - Nadine M Harris
- Department of Medicine, Emory University School of Medicine, Atlanta
- Infectious Diseases, VA Atlanta Healthcare System, Decatur, GA
| | - Amitabh Parashar
- Department of Medicine, Virginia Tech Carilion School of Medicine, Roanoke
- Geriatrics Extended Care, Salem Veterans Affairs Healthcare System, Salem, VA
| | - Alice S Ryan
- Department of Medicine, University of Maryland School of Medicine, Baltimore, MD
- Baltimore Veterans Affairs Medical Center Geriatric Research, Education, and Clinical Center at the Veterans Affairs Maryland Healthcare System, Baltimore, MD
| | - Vincent C Marconi
- Department of Medicine, Emory University School of Medicine, Atlanta
- Infectious Diseases, VA Atlanta Healthcare System, Decatur, GA
- Department of Global Health, Emory University Rollins School of Public Health, Atlanta, GA, USA
| |
Collapse
|
3
|
Matusik PS, Alomar O, Hussain MR, Akrmah M, Matusik PT, Chen DM, Alomar M, Stein PK. Heart Rate Variability and Coronary Artery Bypass Grafting: A Systematic Review. Rev Cardiovasc Med 2024; 25:36. [PMID: 39077663 PMCID: PMC11262371 DOI: 10.31083/j.rcm2501036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Revised: 10/16/2023] [Accepted: 10/18/2023] [Indexed: 07/31/2024] Open
Abstract
Background Coronary artery bypass grafting (CABG) is a well-established surgical procedure used to treat significant coronary artery disease. Nevertheless, unfavorable cardiovascular events and complications, including cardiac arrhythmias may be observed in patients after CABG. Previous studies have revealed a relationship between risk of cardiac arrhythmias and abnormal heart rate variability (HRV), which reflects adverse alterations in cardiac autonomic functioning, that may occur in patients after a CABG procedure. The aim of this article was to provide a systematic review of the major research findings in this area. Methods A literature search was carried out using PubMed, Cochrane, and Embase databases and relevant articles, published in English, were analyzed in detail. Results Studies performed so far have shown time depending changes in HRV after CABG. Time and frequency domain HRV decrease acutely after CABG but recover almost completely to pre-operative values by 6 months after surgery. Some preoperative clinical states such as: heart failure, type 2 diabetes mellitus and depression adversely affect post-CABG HRV. Finally, post-CABG cardiac rehabilitation appears to improve exercise capacity and speed up recovery of HRV. Conclusions Generally, traditional time and frequency domain HRV parameters fail to predict complications post-CABG. Altered non-linear measures of HRV may identify subgroups of subjects at increased risk of potential complications, including atrial fibrillation post-CABG. However, data available currently does not appear to unequivocally support the hypothesis that early HRV assessment in post-CABG patients predicts long-term mortality.
Collapse
Affiliation(s)
- Patrycja S. Matusik
- Chair of Radiology, Jagiellonian University Medical College and University Hospital, 30-688 Kraków, Poland
| | - Omar Alomar
- Heart Rate Variability Laboratory, Cardiovascular Division, Department of Medicine, Washington University School of Medicine in St. Louis, Saint Louis, MO 63130, USA
| | | | - Muhammad Akrmah
- Department of Pathology, Brigham and Women's Hospital, Boston, MA 02215, USA
| | - Paweł T. Matusik
- Department of Electrocardiology, Institute of Cardiology, Faculty of Medicine, Jagiellonian University Medical College, 31-202 Kraków, Poland
- Department of Electrocardiology, The John Paul II Hospital, 31-202 Kraków, Poland
| | - Daniel M. Chen
- Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Muhammed Alomar
- Heart Rate Variability Laboratory, Cardiovascular Division, Department of Medicine, Washington University School of Medicine in St. Louis, Saint Louis, MO 63130, USA
| | - Phyllis K. Stein
- Heart Rate Variability Laboratory, Cardiovascular Division, Department of Medicine, Washington University School of Medicine in St. Louis, Saint Louis, MO 63130, USA
| |
Collapse
|
4
|
Yuan C, Wu S, Wu Y, Tian C, Wang Z, Zhang X. Effects of Traditional Chinese Medicine "Fuzheng Qingdu Decoction" on Autonomic Function and Cancer-Related Symptoms in Patients with Advanced Gastric Cancer undergoing Chemotherapy: A Controlled Trial. Integr Cancer Ther 2024; 23:15347354241229414. [PMID: 38323452 PMCID: PMC10851715 DOI: 10.1177/15347354241229414] [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: 10/01/2023] [Revised: 12/16/2023] [Accepted: 01/15/2024] [Indexed: 02/08/2024] Open
Abstract
OBJECTIVE To evaluate the effects of Fuzheng Qingdu Decoction (FZQDD) on the autonomic function and cancer-related symptoms of patients with advanced gastric cancer undergoing chemotherapy to verify its clinical efficacy. METHODS Sixty-two patients with stage III or IV gastric cancer were included in this study. The patients were divided into 2 groups: the chemotherapy (33 patients) and chemotherapy with FZQDD (29 patients) groups. The primary outcome was the autonomic function of the patients before and after the interventions. The parameters that were used to assess autonomic function were deceleration capacity (DC) and acceleration capacity (AC) of heart rate and heart rate variability (HRV), which comprised standard deviation of the normal-normal interval (SDNN), root mean square of successive interval differences (RMSSD), low-frequency power (LF), high-frequency power (HF), total power (TP), and LF-HF ratio. The secondary outcomes were cancer-related symptoms and the quality of life. RESULTS DC and HRV parameters (ie, SDNN, RMSSD, LF, HF, and TP) were significantly decreased in the chemotherapy group; however, AC significantly increased after the interventions. No significant differences were observed in the DC, AC, and HRV parameters before and after the interventions in the chemotherapy with FZQDD group. Nevertheless, the changes in DC, AC, and HRV parameters (SDNN, RMSSD, HF, and TP) before and after the interventions were statistically significant between both the groups. FZQDD significantly improved the cancer-related symptoms and the quality of life of the patients. CONCLUSIONS Oxaliplatin combined with S-1 (tegafur, gimeracil, and oteracil potassium) can impair autonomic modulation in patients with advanced gastric cancer. FZQDD can alleviate autonomic dysfunction by increasing the parasympathetic activity and decreasing the sympathetic tone, helping patients restore the dynamic sympathovagal balance, and significantly improving the cancer-related symptoms and the quality of life of patients.
Collapse
Affiliation(s)
- Chengjia Yuan
- Clinical Traditional Chinese Medical College, Yangzhou University, Yangzhou, Jiangsu, China
| | - Shuang Wu
- Clinical Traditional Chinese Medical College, Yangzhou University, Yangzhou, Jiangsu, China
| | - Yang Wu
- Clinical Traditional Chinese Medical College, Yangzhou University, Yangzhou, Jiangsu, China
| | - Cuiling Tian
- Clinical Traditional Chinese Medical College, Yangzhou University, Yangzhou, Jiangsu, China
| | - Zaichuan Wang
- Clinical Traditional Chinese Medical College, Yangzhou University, Yangzhou, Jiangsu, China
| | - Xiaochun Zhang
- Clinical Traditional Chinese Medical College, Yangzhou University, Yangzhou, Jiangsu, China
- Yangzhou Hospital of Traditional Chinese Medicine, Yangzhou, Jiangsu, China
| |
Collapse
|
5
|
Wu S, Guan W, Zhao H, Li G, Zhou Y, Shi B, Zhang X. Prognostic role of short-term heart rate variability and deceleration/acceleration capacities of heart rate in extensive-stage small cell lung cancer. Front Physiol 2023; 14:1277383. [PMID: 38028778 PMCID: PMC10663334 DOI: 10.3389/fphys.2023.1277383] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Accepted: 10/26/2023] [Indexed: 12/01/2023] Open
Abstract
Background: Prior research suggests that autonomic modulation investigated by heart rate variability (HRV) might act as a novel predictive biomarker for cancer prognosis, such as in breast cancer and pancreatic cancer. It is not clear whether there is a correlation between autonomic modulation and prognosis in patients with extensive-stage small cell lung cancer (ES-SCLC). Therefore, the purpose of the study was to examine the association between short-term HRV, deceleration capacity (DC) and acceleration capacity (AC) of heart rate and overall survival in patients with ES-SCLC. Methods: We recruited 40 patients with ES-SCLC, and 39 were included in the final analysis. A 5-min resting electrocardiogram of patients with ES-SCLC was collected using a microelectrocardiogram recorder to analyse short-term HRV, DC and AC. The following HRV parameters were used: standard deviation of the normal-normal intervals (SDNN) and root mean square of successive interval differences (RMSSD). Overall survival of patients with ES-SCLC was defined as time from the date of electrocardiogram measurement to the date of death or the last follow-up. Follow-up was last performed on 07 June 2023. There was a median follow-up time of 42.2 months. Results: Univariate analysis revealed that the HRV parameter SDNN, as well as DC significantly predicted the overall survival of ES-SCLC patients (all p < 0.05). Multivariate analysis showed that the HRV parameters SDNN (hazard ratio = 5.254, 95% CI: 1.817-15.189, p = 0.002), RMSSD (hazard ratio = 3.024, 95% CI: 1.093-8.372, p = 0.033), as well as DC (hazard ratio = 3.909, 95% CI: 1.353-11.293, p = 0.012) were independent prognostic factors in ES-SCLC patients. Conclusion: Decreased HRV parameters (SDNN, RMSSD) and DC are independently associated with shorter overall survival in ES-SCLC patients. Autonomic nervous system function (assessed based on HRV and DC) may be a new biomarker for evaluating the prognosis of patients with ES-SCLC.
Collapse
Affiliation(s)
- Shuang Wu
- School of Medicine, Yangzhou University, Yangzhou, Jiangsu, China
- Department of Radiation Oncology, First Affiliated Hospital, Bengbu Medical College, Bengbu, Anhui, China
| | - Weizheng Guan
- School of Medical Imaging, Bengbu Medical College, Bengbu, Anhui, China
- Anhui Key Laboratory of Computational Medicine and Intelligent Health, Bengbu Medical College, Bengbu, Anhui, China
| | - Huan Zhao
- School of Medical Imaging, Bengbu Medical College, Bengbu, Anhui, China
- Anhui Key Laboratory of Computational Medicine and Intelligent Health, Bengbu Medical College, Bengbu, Anhui, China
| | - Guangqiao Li
- School of Medical Imaging, Bengbu Medical College, Bengbu, Anhui, China
- Anhui Key Laboratory of Computational Medicine and Intelligent Health, Bengbu Medical College, Bengbu, Anhui, China
| | - Yufu Zhou
- Department of Radiation Oncology, First Affiliated Hospital, Bengbu Medical College, Bengbu, Anhui, China
| | - Bo Shi
- School of Medical Imaging, Bengbu Medical College, Bengbu, Anhui, China
- Anhui Key Laboratory of Computational Medicine and Intelligent Health, Bengbu Medical College, Bengbu, Anhui, China
| | - Xiaochun Zhang
- School of Medicine, Yangzhou University, Yangzhou, Jiangsu, China
- Department of Oncology, Yangzhou Hospital of Traditional Chinese Medicine, Yangzhou, Jiangsu, China
| |
Collapse
|
6
|
Aoki M, Kuratsune H, Yamamoto S, Hirano T, Hanaeda K, Nishi Y, Okada T, Nadamura M, Kobayashi C, Sumita E, Gotou J, Koizumi M, Arao H. Autonomic function measurements for evaluating fatigue and quality of life in patients with breast cancer undergoing radiation therapy: a prospective longitudinal study. Radiat Oncol 2023; 18:171. [PMID: 37858146 PMCID: PMC10585884 DOI: 10.1186/s13014-023-02362-w] [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: 07/04/2023] [Accepted: 10/09/2023] [Indexed: 10/21/2023] Open
Abstract
BACKGROUND Fatigue during radiation therapy in women with breast cancer can decrease quality of life (QOL), yet it is often underestimated and needs to be evaluated objectively. This longitudinal study aimed to evaluate fatigue and QOL of women with breast cancer undergoing radiotherapy with a simple autonomic function measurement. METHODS Women with breast cancer who underwent postoperative radiotherapy in eight cancer care hospitals in Chubu and Kinki regions in Japan were recruited between October 2021 and June 2022. The women underwent a self-administered questionnaire that included the Cancer Fatigue Scale (CFS) and the Short Form-8 Health Survey (SF-8) and an autonomic nervous function measurement using a simple, non-invasive device before (T0, baseline), mid (T1), and at the end (T2) of treatment. RESULTS The 57 women showed similar trends, with CFS scores and log LF/HF ratio being the highest at T0 and significantly decreasing at T1 (both p < 0.05). The log LF/HF trends differed between those with high and low baseline log LF/HF values. Women with mental component summary (MCS) score improvement (T0 to T2) had the highest log LF/HF ratio at T0 and had significantly lower log LF/HF values at T1 and T2 than at T0 (p < 0.01 and p < 0.05, respectively). The change of (⊿) MCS from T0 to T1 was negatively correlated with ⊿log LF/HF from T0 to T1 (r = - 0.36, p < 0.01). CONCLUSIONS Measurement of autonomic nerve function with a simple device is useful for objective fatigue assessment during radiotherapy. Psychological support is important as improvement in mental health helps improve autonomic nerve function and, in turn, fatigue.
Collapse
Affiliation(s)
- Miwa Aoki
- Department of Evidence-Based Clinical Nursing, Division of Health Sciences, Osaka University Graduate School of Medicine, 1-7 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Hirohiko Kuratsune
- Department of Evidence-Based Clinical Nursing, Division of Health Sciences, Osaka University Graduate School of Medicine, 1-7 Yamadaoka, Suita, Osaka, 565-0871, Japan
- Fatigue and Mental Health Check Center (FMCC), Co., Ltd., Osaka, Japan
| | - Sena Yamamoto
- Department of Evidence-Based Clinical Nursing, Division of Health Sciences, Osaka University Graduate School of Medicine, 1-7 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Toshiko Hirano
- Department of Nursing, Osaka Red Cross Hospital, Osaka, Japan
| | - Kumiko Hanaeda
- Department of Nursing, Osaka Red Cross Hospital, Osaka, Japan
| | - Yasuka Nishi
- Department of Nursing, Wakayama Medical University Hospital, Wakayama, Japan
| | - Tamami Okada
- Department of Nursing, Otemae Hospital, Osaka, Japan
| | - Maki Nadamura
- Department of Nursing, Kanazawa Medical University Hospital, Kahoku, Japan
| | | | - Emiko Sumita
- Department of Nursing, Takatsuki Red Cross Hospital, Takatsuki, Japan
| | - Junko Gotou
- Department of Nursing, Osaka Medical and Pharmaceutical University Hospital, Takatsuki, Japan
| | - Masahiko Koizumi
- Department of Medical Physics and Engineering, Division of Health Sciences, Osaka University Graduate School of Medicine, Suita, Japan
| | - Harue Arao
- Department of Evidence-Based Clinical Nursing, Division of Health Sciences, Osaka University Graduate School of Medicine, 1-7 Yamadaoka, Suita, Osaka, 565-0871, Japan.
| |
Collapse
|
7
|
Wu S, Guan W, Zhao H, Li G, Zhou Y, Shi B, Zhang X. Assessment of short-term effects of thoracic radiotherapy on the cardiovascular parasympathetic and sympathetic nervous systems. Front Neurosci 2023; 17:1256067. [PMID: 37732299 PMCID: PMC10507252 DOI: 10.3389/fnins.2023.1256067] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Accepted: 08/22/2023] [Indexed: 09/22/2023] Open
Abstract
Background Prior research suggests that cardiovascular autonomic dysfunction might be an early marker of cardiotoxicity induced by antitumor treatment and act as an early predictor of cardiovascular disease-related morbidity and mortality. The impact of thoracic radiotherapy on the parasympathetic and sympathetic nervous systems, however, remains unclear. Therefore, this study aimed to evaluate the short-term effects of thoracic radiotherapy on the autonomic nervous system, using deceleration capacity (DC), acceleration capacity (AC) of heart rate, and heart rate variability (HRV) as assessment tools. Methods A 5 min electrocardiogram was collected from 58 thoracic cancer patients before and after thoracic radiotherapy for DC, AC, and HRV analysis. HRV parameters employed included the standard deviation of the normal-normal interval (SDNN), root mean square of successive interval differences (RMSSD), low frequency power (LF), high frequency power (HF), total power (TP), and the LF to HF ratio. Some patients also received systemic therapies alongside radiotherapy; thus, patients were subdivided into a radiotherapy-only group (28 cases) and a combined radiotherapy and systemic therapies group (30 cases) for additional subgroup analysis. Results Thoracic radiotherapy resulted in a significant reduction in DC (8.5 [5.0, 14.2] vs. 5.3 [3.5, 9.4], p = 0.002) and HRV parameters SDNN (9.9 [7.03, 16.0] vs. 8.2 [6.0, 12.4], p = 0.003), RMSSD (9.9 [6.9, 17.5] vs. 7.7 [4.8, 14.3], p = 0.009), LF (29 [10, 135] vs. 24 [15, 50], p = 0.005), HF (35 [12, 101] vs. 16 [9, 46], p = 0.002), TP (74 [41, 273] vs. 50 [33, 118], p < 0.001), and a significant increase in AC (-8.2 [-14.8, -4.9] vs. -5.8 [-10.1, -3.3], p = 0.003) and mean heart rate (79.8 ± 12.6 vs. 83.9 ± 13.6, p = 0.010). Subgroup analysis indicated similar trends in mean heart rate, DC, AC, and HRV parameters (SDNN, RMSSD, LF, HF, TP) in both the radiotherapy group and the combined treatment group post-radiotherapy. No statistically significant difference was noted in the changes observed in DC, AC, and HRV between the two groups pre- and post-radiotherapy. Conclusion Thoracic radiotherapy may induce cardiovascular autonomic dysfunction by reducing parasympathetic activity and enhancing sympathetic activity. Importantly, the study found that the concurrent use of systemic therapies did not significantly amplify or contribute to the alterations in autonomic function in the short-term following thoracic radiotherapy. DC, AC and HRV are promising and feasible biomarkers for evaluating autonomic dysfunction caused by thoracic radiotherapy.
Collapse
Affiliation(s)
- Shuang Wu
- School of Medicine, Yangzhou University, Yangzhou, China
- Department of Radiation Oncology, First Affiliated Hospital, Bengbu Medical College, Bengbu, China
| | - Weizheng Guan
- School of Medical Imaging, Bengbu Medical College, Bengbu, China
- Anhui Key Laboratory of Computational Medicine and Intelligent Health, Bengbu Medical College, Bengbu, China
| | - Huan Zhao
- School of Medical Imaging, Bengbu Medical College, Bengbu, China
- Anhui Key Laboratory of Computational Medicine and Intelligent Health, Bengbu Medical College, Bengbu, China
| | - Guangqiao Li
- School of Medical Imaging, Bengbu Medical College, Bengbu, China
- Anhui Key Laboratory of Computational Medicine and Intelligent Health, Bengbu Medical College, Bengbu, China
| | - Yufu Zhou
- Department of Radiation Oncology, First Affiliated Hospital, Bengbu Medical College, Bengbu, China
| | - Bo Shi
- School of Medical Imaging, Bengbu Medical College, Bengbu, China
- Anhui Key Laboratory of Computational Medicine and Intelligent Health, Bengbu Medical College, Bengbu, China
| | - Xiaochun Zhang
- School of Medicine, Yangzhou University, Yangzhou, China
- Department of Oncology, Yangzhou Hospital of Traditional Chinese Medicine, Yangzhou, China
| |
Collapse
|
8
|
Sullivan BA, Hochheimer CJ, Chernyavskiy P, King WE, Fairchild KD. Impact of race on heart rate characteristics monitoring in very low birth weight infants. Pediatr Res 2023; 94:575-580. [PMID: 36650306 PMCID: PMC10350468 DOI: 10.1038/s41390-023-02470-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Revised: 12/14/2022] [Accepted: 12/21/2022] [Indexed: 01/18/2023]
Abstract
BACKGROUND A multicenter RCT showed that displaying a heart rate characteristics index (HRCi) predicting late-onset sepsis reduced mortality for VLBW infants. We aimed to assess whether HRCi display had a differential impact for Black versus White infants. METHODS We performed secondary data analysis of Black and White infants enrolled in the HeRO RCT. We evaluated the predictive performance of the HRCi for infants with Black or White maternal race. Using models adjusted for birth weight, we assessed outcomes and interventions for a race × randomization interaction. RESULTS Among 2607 infants, Black infants had lower birth weight, gestational age, length of stay, and ventilator days, while sepsis and mortality were similar. The HRCi performed equally for sepsis prediction in Black and White infants. We found no differential effect of randomization by race on sepsis, mortality, antibiotic days, length of stay, or ventilator days. However, there was a differential randomization effect by race for blood cultures per patient: White RR 1.11 (95% CrI 1.04-1.18), Black RR 1.00 (0.93-1.07). CONCLUSIONS The HRCi performed similarly for sepsis prediction in Black and White infants. Randomization to HRCi display increased blood cultures in White but not in Black infants, while the impact on other outcomes or interventions was similar. IMPACT Predictive analytics, such as heart rate characteristics (HRC) monitoring for late-onset neonatal sepsis, should have equal impact among patients of different race. Infants with Black or White maternal race randomized to HRC display had similar outcomes, but randomization to the study arm increased a related clinical intervention, blood cultures, in White but not in Black infants. This study provides evidence of a differential effect of predictive models on clinical care by race. The work will promote consideration and analysis of equity in the implementation of predictive analytics.
Collapse
Affiliation(s)
- Brynne A Sullivan
- Division of Neonatology, Department of Pediatrics, University of Virginia School of Medicine, Charlottesville, VA, USA.
| | | | - Pavel Chernyavskiy
- Department of Public Health Sciences, University of Virginia School of Medicine, Charlottesville, VA, USA
| | - William E King
- Medical Predictive Sciences Corporation, Charlottesville, VA, USA
| | - Karen D Fairchild
- Division of Neonatology, Department of Pediatrics, University of Virginia School of Medicine, Charlottesville, VA, USA
| |
Collapse
|
9
|
Schlagintweit J, Laharnar N, Glos M, Zemann M, Demin AV, Lederer K, Penzel T, Fietze I. Effects of sleep fragmentation and partial sleep restriction on heart rate variability during night. Sci Rep 2023; 13:6202. [PMID: 37069226 PMCID: PMC10110519 DOI: 10.1038/s41598-023-33013-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Accepted: 04/05/2023] [Indexed: 04/19/2023] Open
Abstract
We developed a cross-over study design with two interventions in randomized order to compare the effects of sleep fragmentation and partial sleep restriction on cardiac autonomic tone. Twenty male subjects (40.6 ± 7.5 years old) underwent overnight polysomnography during 2 weeks, each week containing one undisturbed baseline night, one intervention night (either sleep restriction with 5 h of sleep or sleep fragmentation with awakening every hour) and two undisturbed recovery nights. Parameters of heart rate variability (HRV) were used to assess cardiac autonomic modulation during the nights. Sleep restriction showed significant higher heart rate (p = 0.018) and lower HRV-pNN50 (p = 0.012) during sleep stage N1 and lower HRV-SDNN (p = 0.009) during wakefulness compared to the respective baseline. For HR and SDNN there were recovery effects. There was no significant difference comparing fragmentation night and its baseline. Comparing both intervention nights, sleep restriction had lower HRV high frequency (HF) components in stage N1 (p = 0.018) and stage N2 (p = 0.012), lower HRV low frequency (LF) (p = 0.007) regarding the entire night and lower SDNN (p = 0.033) during WASO during sleep. Sleep restriction increases sympathetic tone and decreases vagal tone during night causing increased autonomic stress, while fragmented sleep does not affect cardiac autonomic parameters in our sample.
Collapse
Affiliation(s)
- Julia Schlagintweit
- Interdisciplinary Center of Sleep Medicine, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Charitéplatz 1, 10117, Berlin, Germany.
| | - Naima Laharnar
- Interdisciplinary Center of Sleep Medicine, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Charitéplatz 1, 10117, Berlin, Germany
| | - Martin Glos
- Interdisciplinary Center of Sleep Medicine, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Charitéplatz 1, 10117, Berlin, Germany
- Advanced Sleep Research GmbH, Luisenstraße 54-55, 10117, Berlin, Germany
| | - Maria Zemann
- Interdisciplinary Center of Sleep Medicine, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Charitéplatz 1, 10117, Berlin, Germany
| | - Artem V Demin
- Institute of Biomedical Problems, Russian Academy of Science, 76a, Khoroshevskoe Shosse, Moscow, Russia, 123007
| | - Katharina Lederer
- Advanced Sleep Research GmbH, Luisenstraße 54-55, 10117, Berlin, Germany
| | - Thomas Penzel
- Interdisciplinary Center of Sleep Medicine, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Charitéplatz 1, 10117, Berlin, Germany
| | - Ingo Fietze
- Interdisciplinary Center of Sleep Medicine, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Charitéplatz 1, 10117, Berlin, Germany
- The Fourth People's Hospital of Guangyuan, Guangyuan, China
| |
Collapse
|
10
|
Georgieva-Tsaneva G. Interactive Cardio System for Healthcare Improvement. SENSORS (BASEL, SWITZERLAND) 2023; 23:1186. [PMID: 36772226 PMCID: PMC9921847 DOI: 10.3390/s23031186] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Revised: 01/12/2023] [Accepted: 01/18/2023] [Indexed: 06/18/2023]
Abstract
The paper presents an interactive cardio system that can be used to improve healthcare. The proposed system receives, processes, and analyzes cardio data using an Internet-based software platform. The system enables the acquisition of biomedical data using various means of recording cardiac signals located in remote locations around the world. The recorded discretized cardio information is transmitted to the system for processing and mathematical analysis. At the same time, the recorded cardio data can also be stored online in established databases. The article presents the algorithms for the preprocessing and mathematical analysis of cardio data (heart rate variability). The results of studies conducted on the Holter recordings of healthy individuals and individuals with cardiovascular diseases are presented. The created system can be used for the remote monitoring of patients with chronic cardiovascular diseases or patients in remote settlements (where, for example, there may be no hospitals), control and assistance in the process of treatment, and monitoring the taking of prescribed drugs to help to improve people's quality of life. In addition, the issue of ensuring the security of cardio information and the confidentiality of the personal data of health users is considered.
Collapse
|
11
|
Cheng W, Chen H, Tian L, Ma Z, Cui X. Heart rate variability in different sleep stages is associated with metabolic function and glycemic control in type 2 diabetes mellitus. Front Physiol 2023; 14:1157270. [PMID: 37123273 PMCID: PMC10140569 DOI: 10.3389/fphys.2023.1157270] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Accepted: 03/24/2023] [Indexed: 05/02/2023] Open
Abstract
Introduction: Autonomic nervous system (ANS) plays an important role in the exchange of metabolic information between organs and regulation on peripheral metabolism with obvious circadian rhythm in a healthy state. Sleep, a vital brain phenomenon, significantly affects both ANS and metabolic function. Objectives: This study investigated the relationships among sleep, ANS and metabolic function in type 2 diabetes mellitus (T2DM), to support the evaluation of ANS function through heart rate variability (HRV) metrics, and the determination of the correlated underlying autonomic pathways, and help optimize the early prevention, post-diagnosis and management of T2DM and its complications. Materials and methods: A total of 64 volunteered inpatients with T2DM took part in this study. 24-h electrocardiogram (ECG), clinical indicators of metabolic function, sleep quality and sleep staging results of T2DM patients were monitored. Results: The associations between sleep quality, 24-h/awake/sleep/sleep staging HRV and clinical indicators of metabolic function were analyzed. Significant correlations were found between sleep quality and metabolic function (|r| = 0.386 ± 0.062, p < 0.05); HRV derived ANS function showed strengthened correlations with metabolic function during sleep period (|r| = 0.474 ± 0.100, p < 0.05); HRV metrics during sleep stages coupled more tightly with clinical indicators of metabolic function [in unstable sleep: |r| = 0.453 ± 0.095, p < 0.05; in stable sleep: |r| = 0.463 ± 0.100, p < 0.05; in rapid eye movement (REM) sleep: |r| = 0.453 ± 0.082, p < 0.05], and showed significant associations with glycemic control in non-linear analysis [fasting blood glucose within 24 h of admission (admission FBG), |r| = 0.420 ± 0.064, p < 0.05; glycated hemoglobin (HbA1c), |r| = 0.417 ± 0.016, p < 0.05]. Conclusions: HRV metrics during sleep period play more distinct role than during awake period in investigating ANS dysfunction and metabolism in T2DM patients, and sleep rhythm based HRV analysis should perform better in ANS and metabolic function assessment, especially for glycemic control in non-linear analysis among T2DM patients.
Collapse
Affiliation(s)
- Wenquan Cheng
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, China
| | - Hongsen Chen
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, China
| | - Leirong Tian
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, China
| | - Zhimin Ma
- Endocrinology Department, Suzhou Science and Technology Town Hospital, Suzhou, China
- *Correspondence: Zhimin Ma, ; Xingran Cui,
| | - Xingran Cui
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, China
- Institute of Medical Devices (Suzhou), Southeast University, Suzhou, China
- *Correspondence: Zhimin Ma, ; Xingran Cui,
| |
Collapse
|
12
|
Components of Oranta-AO software expert system for innovative application of blood pressure monitors. JOURNAL OF RELIABLE INTELLIGENT ENVIRONMENTS 2023; 9:41-56. [PMID: 36157718 PMCID: PMC9490687 DOI: 10.1007/s40860-022-00191-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Accepted: 09/02/2022] [Indexed: 11/12/2022]
Abstract
The authors developed and substantiated the original methods of arterial oscillography, which were implemented in the developed Oranta-AO information system. The methods of application to the arterial oscillogram registered at measurement of arterial pressure gives the possibility to carry out the supplementary systematic assessment of health, functional state of cardiovascular system, its reserve possibilities etc. The authors also developed an Expert System (based on machine-learning methods) for the differential diagnosis of risks of heart, lung, mental illness and prognosis of some blood parameters. Oranta-AO software system was created based on research results due to methods and algorithms that were innovate. For the mathematical modeling of arterial oscillograms used cyclic random processes. Methods of arterial oscillograms processing based on its model in the form of a cyclic random process was developed. The method of evaluation of the rhythm function of arterial oscillograms and statistical methods for estimating the probabilistic characteristics of arterial oscillograms were developed. To solve the clustering problem, the Python k-means and k-means++ algorithm were used. Oranta-AO information system consists of three interrelated parts: mobile application, computing kernel and web system. Computing kernel and web system are deployed on AWS servers and have been tested already. The developed environment aims to be integrated into every new model of electronic meters in the world. Certification (EN 62304:2014, ISO 13485: 2018) in Ukraine is completed, PCT priority is completed. The next step will be to establish cooperation with manufacturers of electronic pressure monitors, patenting and certification in world.
Collapse
|
13
|
Wu S, Li G, Chen M, Zhang S, Zhou Y, Shi B, Zhang X. Association of heartbeat complexity with survival in advanced non-small cell lung cancer patients. Front Neurosci 2023; 17:1113225. [PMID: 37123354 PMCID: PMC10130527 DOI: 10.3389/fnins.2023.1113225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Accepted: 03/14/2023] [Indexed: 05/02/2023] Open
Abstract
Background Previous studies have shown that the predictive value of traditional linear (time domain and frequency domain) heart rate variability (HRV) for the survival of patients with advanced non-small cell lung cancer (NSCLC) is controversial. Nonlinear methods, based on the concept of complexity, have been used to evaluate HRV, providing a new means to reveal the physiological and pathological changes in HRV. This study aimed to assess the association between heartbeat complexity and overall survival in patients with advanced NSCLC. Methods This study included 78 patients with advanced NSCLC (mean age: 62.0 ± 9.3 years). A 5-min resting electrocardiogram of advanced NSCLC patients was collected to analyze the following HRV parameters: time domain indicators, i.e., standard deviation of the normal-normal intervals (SDNN) and root mean square of successive interval differences (RMSSD); frequency domain indicators, i.e., total power (TP), low frequency power (LF), high frequency power (HF), and the ratio of LF to HF (LF/HF); nonlinear HRV indicators characterizing heartbeat complexity, i.e., approximate entropy (ApEn), sample entropy (SampEn), and recurrence quantification analysis (RQA) indexes: mean diagonal line length (Lmean), maximal diagonal line length (Lmax), recurrence rate (REC), determinism (DET), and shannon entropy (ShanEn). Results Univariate analysis revealed that the linear frequency domain parameter HF and nonlinear RQA parameters Lmax, REC, and DET were significantly correlated with the survival of advanced NSCLC patients (all p < 0.05). After adjusting for confounders in the multivariate analysis, HF, REC, and DET were found to be independent prognostic factors for the survival of patients with advanced NSCLC (all p < 0.05). Conclusion There was an independent association between heartbeat complexity and survival in advanced NSCLC patients. The nonlinear analysis method based on RQA may provide valuable additional information for the prognostic stratification of patients with advanced NSCLC and may supplement the traditional time domain and frequency domain analysis methods.
Collapse
Affiliation(s)
- Shuang Wu
- School of Medicine, Yangzhou University, Yangzhou, Jiangsu, China
- Department of Radiation Oncology, First Affiliated Hospital, Bengbu Medical College, Bengbu, Anhui, China
| | - Guangqiao Li
- School of Medical Imaging, Bengbu Medical College, Bengbu, Anhui, China
- Anhui Key Laboratory of Computational Medicine and Intelligent Health, Bengbu Medical College, Bengbu, Anhui, China
| | - Man Chen
- Department of Oncology, Yangzhou Hospital of Traditional Chinese Medicine, Yangzhou, Jiangsu, China
| | - Sai Zhang
- School of Medical Imaging, Bengbu Medical College, Bengbu, Anhui, China
- Anhui Key Laboratory of Computational Medicine and Intelligent Health, Bengbu Medical College, Bengbu, Anhui, China
| | - Yufu Zhou
- Department of Radiation Oncology, First Affiliated Hospital, Bengbu Medical College, Bengbu, Anhui, China
| | - Bo Shi
- School of Medical Imaging, Bengbu Medical College, Bengbu, Anhui, China
- Anhui Key Laboratory of Computational Medicine and Intelligent Health, Bengbu Medical College, Bengbu, Anhui, China
- *Correspondence: Bo Shi,
| | - Xiaochun Zhang
- School of Medicine, Yangzhou University, Yangzhou, Jiangsu, China
- Department of Oncology, Yangzhou Hospital of Traditional Chinese Medicine, Yangzhou, Jiangsu, China
- Xiaochun Zhang,
| |
Collapse
|
14
|
Moghtadaei M, Dorey TW, Rose RA. Evaluation of non-linear heart rate variability using multi-scale multi-fractal detrended fluctuation analysis in mice: Roles of the autonomic nervous system and sinoatrial node. Front Physiol 2022; 13:970393. [PMID: 36237525 PMCID: PMC9552224 DOI: 10.3389/fphys.2022.970393] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Accepted: 08/18/2022] [Indexed: 11/16/2022] Open
Abstract
Nonlinear analyses of heart rate variability (HRV) can be used to quantify the unpredictability, fractal properties and complexity of heart rate. Fractality and its analysis provides valuable information about cardiovascular health. Multi-Scale Multi-Fractal Detrended Fluctuation Analysis (MSMFDFA) is a complexity-based algorithm that can be used to quantify the multi-fractal dynamics of the HRV time series through investigating characteristic exponents at different time scales. This method is applicable to short time series and it is robust to noise and nonstationarity. We have used MSMFDFA, which enables assessment of HRV in the frequency ranges encompassing the very-low frequency and ultra-low frequency bands, to jointly assess multi-scale and multi-fractal dynamics of HRV signals obtained from telemetric ECG recordings in wildtype mice at baseline and after autonomic nervous system (ANS) blockade, from electrograms recorded from isolated atrial preparations and from spontaneous action potential recordings in isolated sinoatrial node myocytes. Data demonstrate that the fractal profile of the intrinsic heart rate is significantly different from the baseline heart rate in vivo, and it is also altered after ANS blockade at specific scales and fractal order domains. For beating rate in isolated atrial preparations and intrinsic heart rate in vivo, the average fractal structure of the HRV increased and multi-fractality strength decreased. These data demonstrate that fractal properties of the HRV depend on both ANS activity and intrinsic sinoatrial node function and that assessing multi-fractality at different time scales is an effective approach for HRV assessment.
Collapse
Affiliation(s)
- Motahareh Moghtadaei
- Department of Cardiac Sciences, Cumming School of Medicine, Libin Cardiovascular Institute, University of Calgary, Calgary, AB, Canada
- Department of Physiology and Pharmacology, Cumming School of Medicine, Libin Cardiovascular Institute, University of Calgary, Calgary, AB, Canada
| | - Tristan W. Dorey
- Department of Cardiac Sciences, Cumming School of Medicine, Libin Cardiovascular Institute, University of Calgary, Calgary, AB, Canada
- Department of Physiology and Pharmacology, Cumming School of Medicine, Libin Cardiovascular Institute, University of Calgary, Calgary, AB, Canada
| | - Robert A. Rose
- Department of Cardiac Sciences, Cumming School of Medicine, Libin Cardiovascular Institute, University of Calgary, Calgary, AB, Canada
- Department of Physiology and Pharmacology, Cumming School of Medicine, Libin Cardiovascular Institute, University of Calgary, Calgary, AB, Canada
- *Correspondence: Robert A. Rose,
| |
Collapse
|
15
|
Li G, Wu S, Zhao H, Guan W, Zhou Y, Shi B. Non-invasive prognostic biomarker of lung cancer patients with brain metastases: Recurrence quantification analysis of heart rate variability. Front Physiol 2022; 13:987835. [PMID: 36148296 PMCID: PMC9486009 DOI: 10.3389/fphys.2022.987835] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Accepted: 08/15/2022] [Indexed: 11/28/2022] Open
Abstract
Background: It has previously been shown that the time-domain characteristic of heart rate variability (HRV) is an independent prognostic factor for lung cancer patients with brain metastasis (LCBM). However, it is unclear whether the nonlinear dynamic features contained in HRV are associated with prognosis in patients with LCBM. Recurrence quantification analysis (RQA) is a common nonlinear method used to characterize the complexity of heartbeat interval time series. This study was aimed to explore the association between HRV RQA parameters and prognosis in LCBM patients. Methods: Fifty-six LCBM patients from the Department of Radiation Oncology, the First Affiliated Hospital of Bengbu Medical College, were enrolled in this study. Five-minute ECG data were collected by a mini-ECG recorder before the first brain radiotherapy, and then heartbeat interval time series were extracted for RQA. The main parameters included the mean diagonal line length (Lmean), maximal diagonal line length (Lmax), percent of recurrence (REC), determinism (DET) and Shannon entropy (ShanEn). Patients were followed up (the average follow-up time was 19.2 months, a total of 37 patients died), and the relationships between the RQA parameters and survival of LCBM patients were evaluated by survival analysis. Results: The univariate analysis showed that an Lmax of >376 beats portended worse survival in LCBM patients. Multivariate Cox regression analysis revealed that the Lmax was still an independent prognostic factor for patients with LCBM after adjusting for confounders such as the Karnofsky performance status (KPS) (HR = 0.318, 95% CI: 0.151–0.669, p = 0.003). Conclusion: Reduced heartbeat complexity indicates a shorter survival time in patients with LCBM. As a non-invasive biomarker, RQA has the potential for application in evaluating the prognosis of LCBM patients.
Collapse
Affiliation(s)
- Guangqiao Li
- School of Medical Imaging, Bengbu Medical College, Bengbu, China
- Anhui Key Laboratory of Computational Medicine and Intelligent Health, Bengbu Medical College, Bengbu, China
| | - Shuang Wu
- Department of Radiation Oncology, First Affiliated Hospital, Bengbu Medical College, Bengbu, China
| | - Huan Zhao
- School of Medical Imaging, Bengbu Medical College, Bengbu, China
- Anhui Key Laboratory of Computational Medicine and Intelligent Health, Bengbu Medical College, Bengbu, China
| | - Weizheng Guan
- School of Medical Imaging, Bengbu Medical College, Bengbu, China
- Anhui Key Laboratory of Computational Medicine and Intelligent Health, Bengbu Medical College, Bengbu, China
| | - Yufu Zhou
- Department of Radiation Oncology, First Affiliated Hospital, Bengbu Medical College, Bengbu, China
| | - Bo Shi
- School of Medical Imaging, Bengbu Medical College, Bengbu, China
- Anhui Key Laboratory of Computational Medicine and Intelligent Health, Bengbu Medical College, Bengbu, China
- *Correspondence: Bo Shi,
| |
Collapse
|
16
|
Dobson GP, Morris JL, Letson HL. Why are bleeding trauma patients still dying? Towards a systems hypothesis of trauma. Front Physiol 2022; 13:990903. [PMID: 36148305 PMCID: PMC9485567 DOI: 10.3389/fphys.2022.990903] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Accepted: 08/12/2022] [Indexed: 12/14/2022] Open
Abstract
Over the years, many explanations have been put forward to explain early and late deaths following hemorrhagic trauma. Most include single-event, sequential contributions from sympathetic hyperactivity, endotheliopathy, trauma-induced coagulopathy (TIC), hyperinflammation, immune dysfunction, ATP deficit and multiple organ failure (MOF). We view early and late deaths as a systems failure, not as a series of manifestations that occur over time. The traditional approach appears to be a by-product of last century's highly reductionist, single-nodal thinking, which also extends to patient management, drug treatment and drug design. Current practices appear to focus more on alleviating symptoms rather than addressing the underlying problem. In this review, we discuss the importance of the system, and focus on the brain's "privilege" status to control secondary injury processes. Loss of status from blood brain barrier damage may be responsible for poor outcomes. We present a unified Systems Hypothesis Of Trauma (SHOT) which involves: 1) CNS-cardiovascular coupling, 2) Endothelial-glycocalyx health, and 3) Mitochondrial integrity. If central control of cardiovascular coupling is maintained, we hypothesize that the endothelium will be protected, mitochondrial energetics will be maintained, and immune dysregulation, inflammation, TIC and MOF will be minimized. Another overlooked contributor to early and late deaths following hemorrhagic trauma is from the trauma of emergent surgery itself. This adds further stress to central control of secondary injury processes. New point-of-care drug therapies are required to switch the body's genomic and proteomic programs from an injury phenotype to a survival phenotype. Currently, no drug therapy exists that targets the whole system following major trauma.
Collapse
Affiliation(s)
- Geoffrey P. Dobson
- Heart and Trauma Research Laboratory, College of Medicine and Dentistry, James Cook University, Townsville, QLD, Australia
| | | | | |
Collapse
|
17
|
Blesius V, Schölzel C, Ernst G, Dominik A. Comparability of Heart Rate Turbulence Methodology: 15 Intervals Suffice to Calculate Turbulence Slope – A Methodological Analysis Using PhysioNet Data of 1074 Patients. Front Cardiovasc Med 2022; 9:793535. [PMID: 35463773 PMCID: PMC9019151 DOI: 10.3389/fcvm.2022.793535] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Accepted: 02/07/2022] [Indexed: 11/24/2022] Open
Abstract
Heart rate turbulence (HRT) is a characteristic heart rate pattern triggered by a ventricular premature contraction (VPC). It can be used to assess autonomic function and health risk for various conditions, e.g., coronary artery disease or cardiomyopathy. While comparability is essential for scientific analysis, especially for research focusing on clinical application, the methodology of HRT still varies widely in the literature. Particularly, the ECG measurement and parameter calculation of HRT differs, including the calculation of turbulence slope (TS). In this article, we focus on common variations in the number of intervals after the VPC that are used to calculate TS (#TSRR) posing two questions: 1) Does a change in #TSRR introduce noticeable changes in HRT parameter values and classification? and 2) Do larger values of turbulence timing (TT) enabled by a larger #TSRR still represent distinct HRT? We compiled a free-access data set of 1,080 annotated long-term ECGs provided by Physionet. HRT parameter values and risk classes were determined both with #TSRR 15 and 20. A standard local tachogram was created by averaging the tachograms of only the files with the best heart rate variability values. The shape of this standard VPC sequence was compared to all VPC sequences grouped by their TT value using dynamic time warping (DTW) in order to identify HRT shapes. When calculated with different #TSRR, our results show only a little difference between the number of files with enough valid VPC sequences to calculate HRT (<1%) and files with different risk classes (5 and 6% for HRT0-2 and HRTA-C, respectively). In the DTW analysis, the difference between averaged sequences with a specific TT and the standard sequence increased with increasing TT. Our analysis suggests that HRT occurs in the early intervals after the VPC and TS calculated from late intervals reflects common heart rate variability rather than a distinct response to the VPC. Even though the differences in classification are marginal, this can lead to problems in clinical application and scientific research. Therefore, we recommend uniformly using #TSRR 15 in HRT analysis.
Collapse
Affiliation(s)
- Valeria Blesius
- Life Science Informatics Group, Department of Mathematics, Natural Sciences and Informatics, Technische Hochschule Mittelhessen (THM) University of Applied Sciences, Giessen, Germany
- *Correspondence: Valeria Blesius
| | - Christopher Schölzel
- Life Science Informatics Group, Department of Mathematics, Natural Sciences and Informatics, Technische Hochschule Mittelhessen (THM) University of Applied Sciences, Giessen, Germany
| | - Gernot Ernst
- Department of Anaesthesiology, Kongsberg Hospital, Vestre Viken Hospital Trust, Kongsberg, Norway
- Psychological Institute, University of Oslo, Oslo, Norway
| | - Andreas Dominik
- Life Science Informatics Group, Department of Mathematics, Natural Sciences and Informatics, Technische Hochschule Mittelhessen (THM) University of Applied Sciences, Giessen, Germany
| |
Collapse
|
18
|
Wu SJ, Hsieh YC. Sudden cardiac death in heart failure with preserved ejection fraction: an updated review. INTERNATIONAL JOURNAL OF ARRHYTHMIA 2022. [DOI: 10.1186/s42444-021-00059-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
AbstractDespite the advances in medical and device therapies for heart failure (HF), sudden cardiac death (SCD) remains a tremendous global burden in patients with HF. Among the risk factors for SCD, HF has the greatest impact. Previous studies focusing on patients with systolic dysfunction have found several predictive factors associated with SCD, leading to the subsequent development of strategies of primary prevention, like placement of implantable cardioverter-defibrillator (ICD) in high-risk patients. Although patients with HF with preserved ejection fraction (HFpEF) were less prone to SCD compared to patients with HF with reduced ejection fraction (HFrEF), patients with HFpEF did account for a significant proportion of all HF patients who encountered SCD. The cutoff value of left ventricular ejection fraction (LVEF) to define the subset of HF did not reach consensus until 2016 when the European Society of Cardiology proposed a new classification system by LVEF. There is a great unmet need in the field of SCD in HFpEF regarding risk stratification and appropriate device therapy with ICD implantation. In this article, we will approach SCD in HFpEF from HFrEF subsets. We also aim at clarifying the mechanisms, risk factors, and prevention of SCD in HFpEF.
Collapse
|
19
|
Heart rate variability is markedly abnormal following surgical repair of atrial and ventricular septal defects in pediatric patients. INTERNATIONAL JOURNAL OF CARDIOLOGY CONGENITAL HEART DISEASE 2022. [DOI: 10.1016/j.ijcchd.2022.100333] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
|
20
|
Wu S, Li G, Guan W, Zhao H, Wang J, Zhou Y, Zhou Y, Shi B. Low Heart Rate Variability Predicts Poor Overall Survival of Lung Cancer Patients With Brain Metastases. Front Neurosci 2022; 16:839874. [PMID: 35250470 PMCID: PMC8891474 DOI: 10.3389/fnins.2022.839874] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Accepted: 01/26/2022] [Indexed: 01/04/2023] Open
Abstract
Background The aim of this prospective study was to evaluate the association between heart rate variability (HRV) and overall survival of lung cancer patients with brain metastases (LCBM). Methods Fifty-six LCBM patients were enrolled in this study. Five-minute electrocardiograms were collected before the time to first brain radiotherapy. HRV was analyzed quantitatively by using the time domain parameters, i.e., the standard deviation of all normal-normal intervals (SDNN) and the root mean square of successive differences (RMSSD). Survival time for LCBM patients was defined as from the date of HRV testing to the date of death or the last follow-up. Results In the univariate analysis, SDNN ≤ 13 ms (P = 0.003) and RMSSD ≤ 4.8 ms (P = 0.014) significantly predicted poor survival. Multivariate analysis confirmed that RMSSD ≤ 4.8 ms (P = 0.013, hazard ratio = 3.457, 95% confidence interval = 1.303–9.171) was also an independent negative prognostic factor after adjusting for mean heart rate, Karnofsky performance status, and number of brain metastases in LCBM patients. Conclusion Decreased RMSSD is independently associated with shorter survival time in LCBM patients. HRV might be a novel predictive biomarker for LCBM prognosis.
Collapse
Affiliation(s)
- Shuang Wu
- Department of Radiation Oncology, The First Affiliated Hospital of Bengbu Medical College, Bengbu, China
| | - Guangqiao Li
- School of Medical Imaging, Bengbu Medical College, Bengbu, China
- Anhui Key Laboratory of Computational Medicine and Intelligent Health, Bengbu Medical College, Bengbu, China
| | - Weizheng Guan
- School of Medical Imaging, Bengbu Medical College, Bengbu, China
- Anhui Key Laboratory of Computational Medicine and Intelligent Health, Bengbu Medical College, Bengbu, China
| | - Huan Zhao
- School of Medical Imaging, Bengbu Medical College, Bengbu, China
- Anhui Key Laboratory of Computational Medicine and Intelligent Health, Bengbu Medical College, Bengbu, China
| | - Jingfeng Wang
- School of Medical Imaging, Bengbu Medical College, Bengbu, China
- Anhui Key Laboratory of Computational Medicine and Intelligent Health, Bengbu Medical College, Bengbu, China
| | - Yongchun Zhou
- Department of Radiation Oncology, The First Affiliated Hospital of Bengbu Medical College, Bengbu, China
| | - Yufu Zhou
- Department of Radiation Oncology, The First Affiliated Hospital of Bengbu Medical College, Bengbu, China
- *Correspondence: Yufu Zhou,
| | - Bo Shi
- School of Medical Imaging, Bengbu Medical College, Bengbu, China
- Anhui Key Laboratory of Computational Medicine and Intelligent Health, Bengbu Medical College, Bengbu, China
- Bo Shi,
| |
Collapse
|
21
|
Nam EC, Chun KJ, Won JY, Kim JW, Lee WH. The differences between daytime and night-time heart rate variability may usefully predict the apnea-hypopnea index in patients with obstructive sleep apnea. J Clin Sleep Med 2022; 18:1557-1563. [PMID: 35088710 DOI: 10.5664/jcsm.9912] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
STUDY OBJECTIVES The association between daytime/night-time heart rate variability (HRV) and the apnea-hypopnea index (AHI) remains unclear. We sought a relationship between AHI and the daytime-to night-time HRV ratio as measured by 24-h Holter monitoring in patients with obstructive sleep apnea (OSA). METHODS We prospectively enrolled 66 patients who visited our sleep clinic complaining of habitual snoring or sleep apnea. All underwent 24-h Holter monitoring (to measure HRV) combined with full-night polysomnography (PSG). Sixty-two met our enrolment criteria. We evaluated the associations between HRV frequency domains and the PSG indices. We also considered medical histories and anthropometric data. RESULTS The night-time very low frequency (VLF), low frequency (LF), and high frequency (HF) HRVs were significantly higher than the daytime values. On correlation analysis, the day/night VLF (r = 0.550, p < 0.001), LF (r = 0.556, p < 0.001), and HF (r = 0.303, p = 0.017) HRVs were significantly related to the AHI. Of the day/night HRV ratios, the VLF (p for trend = 0.003) and LF (p for trend = 0.013) ratios decreased significantly by OSA severity. Multivariable analysis showed that the day/night VLF (β = 16.387, p < 0.001) and day/night LF (β = 25.248, p < 0.001) were independently (and significantly) associated with the AHI. CONCLUSIONS Twenty-four-hour Holter monitoring may usefully predict AHI. The day/night VLF and day/night LF ratios tended to decrease by OSA severity and were independently associated with the AHI.
Collapse
Affiliation(s)
- Eui-Cheol Nam
- Departments of Otolaryngology, Kangwon National University Hospital, College of Medicine, Kangwon National University, Chuncheon, Korea
| | - Kwang Jin Chun
- Division of Cardiology, Department of Internal Medicine, Kangwon National University Hospital, College of Medicine, Kangwon National University, Chuncheon, Korea
| | - Jun Yeon Won
- Departments of Otolaryngology, Kangwon National University Hospital, College of Medicine, Kangwon National University, Chuncheon, Korea
| | - Jeong-Whun Kim
- Department of Otorhinolaryngology, Seoul National University College of Medicine, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Woo Hyun Lee
- Departments of Otolaryngology, Kangwon National University Hospital, College of Medicine, Kangwon National University, Chuncheon, Korea
| |
Collapse
|
22
|
Hsieh CM, Lin WC, Peng HY, Chen HC, Ho YC, Li CJ, Wu XG, Chung JY, Lee SD, Lin TB. Shoulder transcutaneous electric nerve stimulation decreases heart rate via potentiating vagal tone. Sci Rep 2021; 11:19168. [PMID: 34580404 PMCID: PMC8476641 DOI: 10.1038/s41598-021-98690-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2021] [Accepted: 09/07/2021] [Indexed: 11/23/2022] Open
Abstract
By enhancing vagal activity, auricle transcutaneous electric nerve stimulation (TENS) is developed as a non-invasive therapy for heart failure. Nevertheless, though shoulder TENS used for treating adhesive capsulitis could affect vagal tone, its potential impact on heart functions remains unclear. In this study, electrocardiogram (ECG) and heart rate (HR) of subjects in response to sham, right-sided, or left-sided shoulder TENS (TENS-S, TENS-R, and TENS-L, respectively; 5 min) were recorded and analyzed. During the stimulation period, TENS-R constantly and TENS-L transiently decreased the HR of subjects; both TENS-R and TENS-L increased powers of the low- and high-frequency spectra. While TENS-R exhibiting no effect, TENS-L increased the ratio of low/high-frequency power spectrum indicating TENS-R decreased the HR through potentiating cardiac vagal tone. Collectively, these results suggest TENS could be an early and non-invasive therapy for heart failure patients before considering implant devices or devices are not feasible; moreover, therapists/physicians need to carefully monitor the potential adverse events during treatment for patient safety. Trial registration: The study protocol was registered in ClinicalTrials.gov (NCT03982472; 11/06/2019).
Collapse
Affiliation(s)
- Chun-Ming Hsieh
- Division of Physical Therapy, St. Paul's Hospital, Taoyuan, Taiwan
| | - Wan-Chen Lin
- Department of Physiology, School of Medicine, College of Medicine, Taipei Medical University, No. 250, Wu-Hsing Street, Taipei, 11031, Taiwan.,National Taiwan University Hospital, Taipei, Taiwan
| | - Hsien-Yu Peng
- Department of Medicine, Mackay Medical College, New Taipei, Taiwan
| | - Huang-Chung Chen
- Department of Rehabilitation, St. Paul's Hospital, Taoyuan, Taiwan
| | - Yu-Cheng Ho
- Department of Medicine, Mackay Medical College, New Taipei, Taiwan
| | - Chi-Jui Li
- Division of Physical Therapy, St. Paul's Hospital, Taoyuan, Taiwan
| | - Xi-Guan Wu
- Division of Physical Therapy, St. Paul's Hospital, Taoyuan, Taiwan
| | - Jen-Yi Chung
- Division of Physical Therapy, St. Paul's Hospital, Taoyuan, Taiwan
| | - Shin-Da Lee
- Department of Occupational Therapy, Asia University, Taichung, Taiwan.,Department of Physical Therapy, Graduate Institute of Rehabilitation Science, China Medical University, Taichung, Taiwan.,School of Rehabilitation Science, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Tzer-Bin Lin
- Department of Physiology, School of Medicine, College of Medicine, Taipei Medical University, No. 250, Wu-Hsing Street, Taipei, 11031, Taiwan. .,Department of Bioinformatics and Medical Engineering, Asia University, Taichung, Taiwan. .,Department of Biotechnology, Asia University, Taichung, Taiwan. .,Cell Physiology and Molecular Image Research Center, Wan Fang Hospital, Taipei Medical University, Taipei, Taiwan.
| |
Collapse
|
23
|
Lavín-Pérez AM, Collado-Mateo D, Mayo X, Liguori G, Humphreys L, Jiménez A. Can Exercise Reduce the Autonomic Dysfunction of Patients With Cancer and Its Survivors? A Systematic Review and Meta-Analysis. Front Psychol 2021; 12:712823. [PMID: 34504462 PMCID: PMC8422989 DOI: 10.3389/fpsyg.2021.712823] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Accepted: 07/12/2021] [Indexed: 12/17/2022] Open
Abstract
Background: Cancer therapies have increased patient survival rates, but side effects such as cardiotoxicity and neurotoxicity can lead to autonomic nervous and cardiovascular system dysfunction. This would result in a decrease in parasympathetic activity and the enhancement of sympathetic activity. Heart rate variability (HRV), which reflects autonomic modulation, is a valuable physiological tool since it correlates with cancer-related fatigue, stress, depression, and mortality in patients with cancer. Objective: This study aimed to analyze the effects of exercise programs on the autonomic modulation, measured by the HRV of patients with cancer and its survivors. Methods: The Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines were followed, and the quality of the articles was assessed with the Physiotherapy Evidence Database (PEDro) scale. The meta-analysis statistic procedure was performed by using RevMan software version 5.3. Results: From the 252 articles found, six studies were included in the review involving 272 participants aged 30–75 years. Exercise programs had a mean length of 10.4 ± 4.6 weeks, a frequency of 3 ± 1.4 days/week, and a mean duration of 78 ± 23.9 min. In time-domain HRV measures, exercise may increase in the SD of normal-to-normal intervals [p < 0.00001, with a mean difference (MD) of 12.79 ms from 9.03 to 16.55] and a decreased root mean square of successive R–R interval differences (p = 0.002, with an MD of 13.08 ms from 4.90 to 21.27) in comparison with control groups (CG). The frequency-domain data reveal that the exercise group (EG) improve significantly more than the CGs in low frequency [absolute power: p < 0.0001, with a standardized mean difference (SMD) of 0.97 from 0.61 to 1.34; relative power: p = 0.04, with an MD = −7.70 from −15.4 to −0.36], high-frequency [absolute power: p = 0.001, with a SMD of 1.49 from 0.32 to 2.66; relative power: p = 0.04, with an MD of 8.00 normalized units (n.u.) from 0.20 to 15.80], and low-to-high frequency ratio (p = 0.007 with an MD of −0.32 from −0.55 to −0.09). Conclusion: Exercise programs could lead to positive effects on the autonomic modulation of patients with cancer and its survivors. More beneficial changes may occur with resistance and endurance workouts. However, due to the low number of interventions performed, further research is needed to substantiate the findings and to provide additional insights regarding the exercise intensity required to increase the autonomic modulation of the patient.
Collapse
Affiliation(s)
- Ana Myriam Lavín-Pérez
- PhD International School, Program of Epidemiology and Public Health (Interuniversity), Rey Juan Carlos University, Móstoles, Spain.,Centre for Sport Studies, Rey Juan Carlos University, Fuenlabrada, Spain.,GO fitLAB, Ingesport, Madrid, Spain
| | | | - Xián Mayo
- Centre for Sport Studies, Rey Juan Carlos University, Fuenlabrada, Spain
| | - Gary Liguori
- College of Health Sciences, University of Rhode Island, Kingston, NY, United States
| | - Liam Humphreys
- Advanced Wellbeing Research Centre, College of Health, Wellbeing and Life Sciences, Sheffield Hallam University, Sheffield, United Kingdom
| | - Alfonso Jiménez
- Centre for Sport Studies, Rey Juan Carlos University, Fuenlabrada, Spain.,GO fitLAB, Ingesport, Madrid, Spain.,Advanced Wellbeing Research Centre, College of Health, Wellbeing and Life Sciences, Sheffield Hallam University, Sheffield, United Kingdom
| |
Collapse
|
24
|
Autonomic dysfunction and heart rate variability with Holter monitoring: a diagnostic look at autonomic regulation. Herzschrittmacherther Elektrophysiol 2021; 32:315-319. [PMID: 34236476 DOI: 10.1007/s00399-021-00780-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Accepted: 06/06/2021] [Indexed: 10/20/2022]
Abstract
Heart rate variability (HRV) refers to the beat-to-beat variation of the cardiac cycle. Since heart rate is modulated on a beat-to-beat basis by the combined influence of the sympathetic and parasympathetic nervous system at the sinus node level, HRV has been considered an indirect biomarker of cardiac autonomic control and widely exploited for the assessment of autonomic function in many pathological subjects. This focus article summarizes the main findings derived from HRV analysis applied to 24‑h Holter monitoring in both cardiac and non-cardiac diseases as well as in physiological conditions in the healthy population. Even if the prognostic role of HRV indices is well recognized and its use ever more widespread, its implementation in the diagnostic and prognostic processes in routine clinical practice remains limited. Several reasons for these limitations can be identified: first the lack of reliable reference values, and secondly, the low specificity of HRV indices in particular when considering the constant evolution of clinical practice and therapeutic approaches, making it difficult to refer to a specific and stable combination of clinical and HRV markers. Therefore, the clinical use of HRV should be further investigated. Finally, HRV represents a substantial tool for investigating the physiological conditions in healthy people that can have important implications in primary prevention and the understanding of gender differences, as well as in sport and occupational medicine.
Collapse
|
25
|
Alauddin W, Chaswal M, Bashir M, Isser HS. A Study of Cardiac Autonomic Functions in Patients with Chronic Stable Angina Undergoing Percutaneous Coronary Revascularization. Medeni Med J 2021; 36:91-97. [PMID: 34239760 PMCID: PMC8226402 DOI: 10.5222/mmj.2021.24603] [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: 03/25/2021] [Accepted: 05/14/2021] [Indexed: 11/21/2022] Open
Abstract
OBJECTIVE In the present study, cardiac autonomic functions in CSA patients were evaluated before and after percutaneous coronary intervention (PCI) using heart rate variability (HRV). METHODS Thirty patients with CSA were recruited from cardiology outpatient clinics of VMMC and Safdarjung hospital, New Delhi, India. For each patient HRV parameters (LF, HF, LF:HF ratio, SDNN, RMSSD, total power, and pNN50) were gathered before and after PCI. Data were compiled and analyzed using licensed statistical software: SPSS version 21.0. RESULTS Out of 30 subjects, SDNN (61.47±22.27 vs. 32.24±16.50ms, p<0.0001), RMSSD (53.86±31.41 vs. 28.81±23.80ms, p=0.001) and pNN50 (46.24±34.36 vs. 5.20±6.63, p<0.0001) in post-PCI were significantly higher as compared to the pre-PCI values. There were significant increases in both LF (1193ms2±302.04ms2vs. 1054.60ms2±208 ms2, p<0.001) and HF (991.57±872.40ms2vs. 466.72ms2±257.93ms2, p<0.0001), also in total power (3548.37ms2±807.73ms2vs. 2428 ms2±867.07 ms2, p<0.0001) in post-PCI as compared to pre-PCI. The LF:HF ratio in pre-PCI was higher as compared to post-PCI (1.467±1.639 vs. 1.143±0.852, p=0.805), but the difference was not statistically significant. CONCLUSION In this preliminary study, it is concluded that there is significant improvement in resting cardiovascular parameters, resting autonomic tone as measured by HRV which shows increase in both parasympathetic as well as sympathetic reactivity following revascularization by PCI in CSA patients. Hence, we also suggest that the use of noninvasive tests such as HRV should be done to stratify further risk of disease progression.
Collapse
Affiliation(s)
- Waqas Alauddin
- Hinduhridaysamrat Balasaheb Thackarey Medical College, Dr. Rustom Narsi Cooper Hospital, Juhu, Mumbai, India
| | - Meenakshi Chaswal
- Atal Bihari Vajpayee Institute of Medical Sciences, Dr. Ram Manohar Lohia Hospital, New Delhi, India
| | - Musharaf Bashir
- Government Medical College, Srinagar, Jammu and Kashmir, India
| | | |
Collapse
|
26
|
Exploring Heart Rate Variability as a Biomedical Diagnostic Tool for the Disympathetic Dimension of Eight-Constitution Medicine. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2021; 2021:6613798. [PMID: 34221081 PMCID: PMC8221872 DOI: 10.1155/2021/6613798] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Revised: 11/26/2020] [Accepted: 05/31/2021] [Indexed: 11/17/2022]
Abstract
Background Eight-Constitution Medicine (ECM), an extension of Traditional Korean Medicine, divides the population into eight groups based on their physiological characteristics. ECM divides these eight groups into two larger groups based on autonomic reactivity: the Sympathicotonic group and the Vagotonic group (herein referred to as the Disympathetic Dimension). Heart Rate Variability (HRV) is a widely used biomedical tool to assess cardiac autonomic function. This raises the question of the utility of using HRV to correctly diagnose ECM constitutions. Methods A systematic literature review was conducted to evaluate the correlation between HRV and constitutions in Korean Constitutional Medicine, including Eight-Constitution Medicine (ECM) and Sasang Constitution Medicine (SCM). The articles were obtained from both English (Scopus, PubMed, EMBASE, ProQuest, and Medline) and Korean databases (NDSL and RISS), in addition to Google Scholar, without date restriction. 20 studies met the inclusion criteria, and data were extracted against three aspects: (1) correlation between HRV and constitution, (2) HRV reporting and interpretation, and (3) extraneous factors that were controlled in the studies. Results 386 articles were initially identified, which was reduced to n = 20 studies which met the inclusion criteria. Of these, 19 were SCM studies and 1 was an ECM study. Sample sizes varied from 10 to 8498 men and women, with an age range of 10-80 years. SCM studies explored HRV differences by constitution, measuring HRV at resting, with controlled breathing, before and after acupuncture stimulation, and by other interventions. SCM studies reported either no significant differences (HRV at resting or with controlled breathing studies) or conflicting data (HRV with acupuncture stimulation studies). The single ECM study measured HRV at resting and after acupuncture stimulation but reported no significant differences between the two groups of Sympathicotonia and Vagotonia. Conclusions Due to inconsistencies in study design, study population, and measures of HRV, there was no consistency in the data to support the use of HRV as a biomedical determinant of ECM constitutions.
Collapse
|
27
|
Julario R, Mulia EPB, Rachmi DA, A’yun MQ, Septianda I, Dewi IP, Juwita RR, Dharmadjati BB. Evaluation of heart rate variability using 24-hour Holter electrocardiography in hypertensive patients. J Arrhythm 2021; 37:157-164. [PMID: 33664898 PMCID: PMC7896473 DOI: 10.1002/joa3.12469] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Revised: 10/22/2020] [Accepted: 11/04/2020] [Indexed: 12/28/2022] Open
Abstract
BACKGROUND Hypertension (HTN) remains a serious risk factor for cardiovascular mortality across the world. Hypertensive state has been shown to be associated with autonomic nervous function. This study aimed to explore the association between autonomic nervous impairment assessed by heart rate variability (HRV) and HTN. METHODS A total of 52 hypertensive and 55 non-hypertensive patients were consecutively studied using 24-hour Holter. The hypertensive patients were grouped into controlled blood pressure (BP) and uncontrolled BP. This study compared HRV in non-hypertensive and hypertensive patients; and hypertensive patients with controlled and uncontrolled BP. HRV parameters include time and frequency domain. RESULTS Mean age for hypertensive and non-hypertensive patients were 53.58 ± 14.31 and 44.89 ± 16.63 years old, respectively. Median (IQR) SDNN for hypertensive and non-hypertensive group were 109.00 (90.00-145.00) and 129.00 (107.00-169.00), respectively. SDNN, ASDNN, rMSSD, pNN50, BB50, VLF, and HF values were significantly lower in the hypertensive group compared to non-hypertensive group (all P < .05). A multiple regression analysis showed that HRV parameters: SDANN, ASDNN, rMSSD, and LF values were independent risk factors of HTN. SDNN, SDANN, ASDNN, VLF, LF, and HF values were significantly lower in the uncontrolled BP compared to controlled BP group (all P < .05). A multiple regression analysis showed that HRV parameters: SDNN, SDANN, rMSSD, and HF values were independent risk factors of uncontrolled BP in hypertensive patients. CONCLUSIONS Our study showed that cardiac autonomic nervous impairment, as demonstrated by reduced HRV, is significantly associated with HTN. Decreased HRV was more evident in uncontrolled BP than in controlled BP group.
Collapse
Affiliation(s)
- Rerdin Julario
- Department of Cardiology and Vascular MedicineFaculty of MedicineUniversitas Airlangga ‐ Dr. Soetomo General HospitalSurabayaIndonesia
| | - Eka Prasetya Budi Mulia
- Department of Cardiology and Vascular MedicineFaculty of MedicineUniversitas Airlangga ‐ Dr. Soetomo General HospitalSurabayaIndonesia
| | - Dita Aulia Rachmi
- Department of Cardiology and Vascular MedicineFaculty of MedicineUniversitas Airlangga ‐ Dr. Soetomo General HospitalSurabayaIndonesia
| | - Maya Qurota A’yun
- Department of Cardiology and Vascular MedicineFaculty of MedicineUniversitas Airlangga ‐ Dr. Soetomo General HospitalSurabayaIndonesia
| | - Imanita Septianda
- Department of Cardiology and Vascular MedicineFaculty of MedicineUniversitas Airlangga ‐ Dr. Soetomo General HospitalSurabayaIndonesia
| | - Ivana Purnama Dewi
- Department of Cardiology and Vascular MedicineFaculty of MedicineUniversitas Airlangga ‐ Dr. Soetomo General HospitalSurabayaIndonesia
| | - Rahima Ratna Juwita
- Department of Cardiology and Vascular MedicineFaculty of MedicineUniversitas Airlangga ‐ Dr. Soetomo General HospitalSurabayaIndonesia
| | - Budi Baktijasa Dharmadjati
- Department of Cardiology and Vascular MedicineFaculty of MedicineUniversitas Airlangga ‐ Dr. Soetomo General HospitalSurabayaIndonesia
| |
Collapse
|
28
|
Effects of 16-Form Wheelchair Tai Chi on the Autonomic Nervous System among Patients with Spinal Cord Injury. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2020; 2020:6626603. [PMID: 33354221 PMCID: PMC7737450 DOI: 10.1155/2020/6626603] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/15/2020] [Revised: 11/04/2020] [Accepted: 11/17/2020] [Indexed: 11/21/2022]
Abstract
Objective This study aims to investigate the effects of 16-form Wheelchair Tai Chi (WCTC16) on the autonomic nervous system among patients with spinal cord injury (SCI). Methods Twenty patients with chronic complete thoracic SCI were recruited. Equivital life monitoring system was used to record and analyze heart rate variability (HRV) of patients for five minutes before and after five consecutive sets of WCTC16, respectively. The analysis of HRV in the time domain included RR intervals, the standard deviation of all normal RR intervals (SDNN), and the root mean square of the differences between adjacent NN intervals (RMSSD). The analysis of HRV in the frequency domain included total power (TP), which could be divided into very-low-frequency area (VLFP), low-frequency area (LFP), and high-frequency area (HFP). The LF/HF ratio as well as the normalized units of LFP (LFPnu) and HFP (HFPnu) reflected the sympathovagal balance. Results There was no significant difference in RR interval, SDNN, RMSSD, TP, HEP, VLFP, and LFP of SCI patients before and after WCTC16 exercise (P > 0.05). LFPnu and HF peak decreased, while HFPnu and LF/HF increased in SCI patients after WCTC16 exercise. The differences were statistically significant (P < 0.001). Conclusion WCTC16 can enhance vagal activity and decrease sympathetic activity so that patients with chronic complete thoracic SCI can achieve the balanced sympathovagal tone.
Collapse
|
29
|
Aristizabal JP, Navegantes R, Melo E, Pereira A. Use of Heart Rate Variability Biofeedback to Reduce the Psychological Burden of Frontline Healthcare Professionals Against COVID-19. Front Psychol 2020; 11:572191. [PMID: 33192866 PMCID: PMC7661774 DOI: 10.3389/fpsyg.2020.572191] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2020] [Accepted: 09/11/2020] [Indexed: 11/23/2022] Open
Affiliation(s)
- Juan-Pablo Aristizabal
- Graduate Program in Neuroscience and Behavior, Federal University of Pará, Belém, Brazil
| | - Raphael Navegantes
- Graduate Program in Electrical Engineering, Federal University of Pará, Belém, Brazil
| | - Eline Melo
- Graduate Program in Cell Biology and Neuroscience, Federal University of Pará, Belém, Brazil
| | - Antonio Pereira
- Graduate Program in Electrical Engineering, Federal University of Pará, Belém, Brazil.,Graduate Program in Cell Biology and Neuroscience, Federal University of Pará, Belém, Brazil
| |
Collapse
|
30
|
Blesius V, Schölzel C, Ernst G, Dominik A. HRT assessment reviewed: a systematic review of heart rate turbulence methodology. Physiol Meas 2020; 41:08TR01. [PMID: 32485688 DOI: 10.1088/1361-6579/ab98b3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Heart rate turbulence (HRT) is a biphasic reaction to a ventricular premature contraction (VPC) mainly mediated by the baroreflex. It can be used for risk stratification in different disease patterns. Despite existing standards there is a lot of variation in terms of measuring and calculating HRT, which complicates research and application. OBJECTIVE This systematic review outlines and evaluates the methodological spectrum of HRT research, especially filtering criteria, parameter calculation and thresholds. APPROACH The analysis includes all research papers written in English that have been published before 12.10.2018, are listed on PubMed and involve calculation of HRT parameter values. MAIN RESULTS HRT assessment is still being performed in various ways and important specifications of the methodology are not given in many articles. Nevertheless, some suggestions regarding HRT methodology can be made: a normalised turbulence slope should be used to uncouple the parameter from heart rate and frequency of extrasystoles. Filtering criteria as formerly reviewed in the guidelines should be met and mentioned. The minimal number of VPC snippets (VPCSs) as well as new cut-off values for different risks need to be further evaluated. Most importantly, the exact and complete methodology must be described to ensure reproducibility and comparability. SIGNIFICANCE Methodical variation hinders comparability of research and medical application. Our continuing questions help to further standardise the measurement and calculation of HRT and increase its value for medical risk stratification.
Collapse
|
31
|
Johnston BW, Barrett-Jolley R, Krige A, Welters ID. Heart rate variability: Measurement and emerging use in critical care medicine. J Intensive Care Soc 2020; 21:148-157. [PMID: 32489411 PMCID: PMC7238479 DOI: 10.1177/1751143719853744] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Variation in the time interval between consecutive R wave peaks of the QRS complex has long been recognised. Measurement of this RR interval is used to derive heart rate variability. Heart rate variability is thought to reflect modulation of automaticity of the sinus node by the sympathetic and parasympathetic components of the autonomic nervous system. The clinical application of heart rate variability in determining prognosis post myocardial infarction and the risk of sudden cardiac death is well recognised. More recently, analysis of heart rate variability has found utility in predicting foetal deterioration, deterioration due to sepsis and impending multiorgan dysfunction syndrome in critically unwell adults. Moreover, reductions in heart rate variability have been associated with increased mortality in patients admitted to the intensive care unit. It is hypothesised that heart rate variability reflects and quantifies the neural regulation of organ systems such as the cardiovascular and respiratory systems. In disease states, it is thought that there is an 'uncoupling' of organ systems, leading to alterations in 'inter-organ communication' and a clinically detectable reduction in heart rate variability. Despite the increasing evidence of the utility of measuring heart rate variability, there remains debate as to the methodology that best represents clinically relevant outcomes. With continuing advances in technology, our understanding of the physiology responsible for heart rate variability evolves. In this article, we review the current understanding of the physiological basis of heart rate variability and the methods available for its measurement. Finally, we review the emerging use of heart rate variability analysis in intensive care medicine and conditions in which heart rate variability has shown promise as a potential physiomarker of disease.
Collapse
Affiliation(s)
- Brian W Johnston
- University of Liverpool and The Royal Liverpool University Hospital, Liverpool Healthcare Partners, Liverpool, UK
| | - Richard Barrett-Jolley
- University of Liverpool and The Royal Liverpool University Hospital, Liverpool Healthcare Partners, Liverpool, UK
| | - Anton Krige
- School of Medicine, University of Central Lancashire, Preston, UK
| | - Ingeborg D Welters
- University of Liverpool and The Royal Liverpool University Hospital, Liverpool Healthcare Partners, Liverpool, UK
| |
Collapse
|
32
|
Gökaslan S, Demirbaş H, Özer Gökaslan Ç. Evaluation of cardiovascular autonomic dysfunction according to heart rate turbulence and variability in patients with relapsing remitting multiple sclerosis. Turk J Med Sci 2020; 50:442-447. [PMID: 32222131 PMCID: PMC7164742 DOI: 10.3906/sag-1912-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2019] [Accepted: 03/24/2020] [Indexed: 01/25/2023] Open
Abstract
Background/aim Multiple sclerosis (MS) is an autoimmune disease characterized by neurodegeneration or demyelination; the relapsing–remitting phase of MS is characterized by acute exacerbation of disease activity. The most commonly used noninvasive approach to assess autonomic function is the determination of heart rate turbulence (HRT) and heart rate variability (HRV). The aim of this study was to evaluate the presence of cardiovascular autonomic dysfunction using HRT and HRV parameters determined via 24-h Holter ECG monitoring in patients with relapsing–remitting MS without known heart disease. Materials and methods The study included 26 patients diagnosed with relapsing–remitting MS and 22 age- and sex-matched healthy controls. HRT and HRV parameters were analyzed via 24-h Holter ECG monitoring. Magnetic resonance imaging findings were reevaluated to identify any demyelinating lesions in the brain stem. Results The HRV parameters of SDNNI (mean of the standard deviations of all normal sinus RR intervals in all 5-min segments), rMSSD (root–mean–square successive difference), and sNN50 (percentage of successive normal sinus RR intervals >50 ms) were significantly lower in the MS group than in the control group (P < 0.05). Conclusion This study revealed that the patients with MS had reduced HRV; this was demonstrated by dysfunction with regard to parasympathetic and sympathetic parameters in HRV analysis.
Collapse
Affiliation(s)
- Serkan Gökaslan
- Department of Cardiology, Faculty of Medicine, Afyonkarahisar University of Health Sciences, Afyonkarahisar, Turkey
| | - Hayri Demirbaş
- Department of Neurology, Faculty of Medicine, Afyonkarahisar University of Health Sciences, Afyonkarahisar, Turkey
| | - Çiğdem Özer Gökaslan
- Department of Radiology, Faculty of Medicine, Afyonkarahisar University of Health Sciences, Afyonkarahisar, Turkey
| |
Collapse
|
33
|
Abstract
Heart rate is a parameter that is widely used by the general population as a marker of health. The availability of wearable electronic heart rate monitoring devices and use of specific apps are widely used both at rest and during daily life activities. Resting heart rate values gained more relevance with the evidence of association between elevated heart rate values at rest and diseases and adverse events. Also longitudinal studies demonstrated a clear association between increase in heart rate over time and cardiovascular and all-cause mortality. The increased knowledge of physiological mechanisms of heart rate control and the pathophysiological mechanisms responsible for its dysfunction allows identification of the cutoff value of normalcy. This information can be used to select non-pharmacological and pharmacological interventions to reduce the cardiovascular risk both in the general population and in patients with pathophysiological conditions. This review provides an overview of the current knowledge of resting heart rate as cardiovascular risk factor.
Collapse
Affiliation(s)
- Gino Seravalle
- Cardiology Department, S. Luca Hospital, Istituto Auxologico Italiano IRCCS , Milan, Italy
| | - Guido Grassi
- Clinica Medica, S. Gerardo Hospital, University Milano-Bicocca , Monza, Italy
| |
Collapse
|
34
|
Reply to the letter "The role of heart rate in the assessment of cardiac autonomic modulation with heart rate variability". Clin Res Cardiol 2019; 108:1410-1411. [PMID: 31139890 DOI: 10.1007/s00392-019-01487-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/25/2019] [Accepted: 04/29/2019] [Indexed: 10/26/2022]
|
35
|
Agorastos A, Heinig A, Stiedl O, Hager T, Sommer A, Müller JC, Schruers KR, Wiedemann K, Demiralay C. Vagal effects of endocrine HPA axis challenges on resting autonomic activity assessed by heart rate variability measures in healthy humans. Psychoneuroendocrinology 2019; 102:196-203. [PMID: 30579237 DOI: 10.1016/j.psyneuen.2018.12.017] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/24/2018] [Revised: 11/26/2018] [Accepted: 12/12/2018] [Indexed: 12/25/2022]
Abstract
BACKGROUND The hypothalamic-pituitary-adrenal axis (HPA axis) and the autonomic nervous system (ANS) are considered to play the most crucial role in the pathophysiology of stress responsiveness and are increasingly studied together. However, only few studies have simultaneously assessed HPA axis and ANS activity to investigate their direct interaction in pathophysiology, while no study so far has assessed the dynamic interplay between the two systems in healthy subjects through endocrine challenges. METHODS The present study assessed the direct effects of overnight pharmacoendocrine HPA axis challenges with dexamethasone (suppression) and metyrapone (stimulation) on ANS activity at rest as determined by linear and nonlinear measures of heart rate variability (HRV) in 39 young healthy individuals. RESULTS Findings indicated significant effects of metyrapone, but not dexamethasone on autonomic activity at rest based on HRV measures. HRV after metyrapone was overall significantly reduced in comparison to baseline or post-dexamethasone conditions, while the combined metyrapone-related reduction of HRV measures RMSSD, NN50(%) and HF(%) with concomitant increase of the unifractal scaling coefficient αfast value jointly indicated a specifically diminished vagal activity. CONCLUSIONS We provide first data that HPA axis stimulation (metyrapone) is associated with reduced vagal tone, while HPA axis suppression (dexamethasone) has no effect on autonomic modulation of heart function. Our results support a vital role of the parasympathetic nervous system in the interplay between ANS and HPA axis and, thus, in the modulation of stress-related cardiovascular responsiveness and the susceptibility to stress-related disorders.
Collapse
Affiliation(s)
- Agorastos Agorastos
- Department of Psychiatry and Psychotherapy, University Medical Center Hamburg-Eppendorf, D-20246, Hamburg, Germany; Department of Psychiatry, Division of Neurosciences, School of Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, GR-54124, Thessaloniki, Greece.
| | - Alexandra Heinig
- Department of Psychiatry and Psychotherapy, University Medical Center Hamburg-Eppendorf, D-20246, Hamburg, Germany
| | - Oliver Stiedl
- Center for Neurogenomics and Cognitive Research, VU University Amsterdam, NL-1081, HV, Amsterdam, the Netherlands; Department of Health, Safety and Environment, VU University Amsterdam, NL-1081, BT, Amsterdam, the Netherlands
| | - Torben Hager
- Center for Neurogenomics and Cognitive Research, VU University Amsterdam, NL-1081, HV, Amsterdam, the Netherlands
| | - Anne Sommer
- Department of Psychiatry and Psychotherapy, University Medical Center Hamburg-Eppendorf, D-20246, Hamburg, Germany
| | - Jana C Müller
- Department of Psychiatry and Psychotherapy, University Medical Center Hamburg-Eppendorf, D-20246, Hamburg, Germany
| | - Koen R Schruers
- School of Mental Health and Neuroscience, Faculty of Health, Medicine and Life Sciences, Maastricht University, NL-6200 MD, Maastricht, the Netherlands
| | - Klaus Wiedemann
- Department of Psychiatry and Psychotherapy, University Medical Center Hamburg-Eppendorf, D-20246, Hamburg, Germany
| | - Cüneyt Demiralay
- Department of Psychiatry and Psychotherapy, University Medical Center Hamburg-Eppendorf, D-20246, Hamburg, Germany
| |
Collapse
|
36
|
Hammoud S, Karam R, Mourad R, Saad I, Kurdi M. Stress and Heart Rate Variability during University Final Examination among Lebanese Students. Behav Sci (Basel) 2018; 9:bs9010003. [PMID: 30591634 PMCID: PMC6358958 DOI: 10.3390/bs9010003] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2018] [Revised: 12/18/2018] [Accepted: 12/18/2018] [Indexed: 11/16/2022] Open
Abstract
Real-life stressors, such as university examination, cause an increase in sympathetic activity of the nervous system innervating the heart, and thus an increase in heart rate (HR). Our study aimed to detect changes in heart rate variability (HRV) during different stages of an exam in a group of 90 healthy university students (30 males and 60 females), over 4 h of monitoring divided into 1 h before, 2 h during, and 1 h after the examination. HRV was significantly highest after the exam, indicating release from stress, as compared to before and during the examination when stress was observable. Undergraduate students in different academic years did not differ in terms of stress, indicating the absence of adaptation to exam procedures. However, HR and R-R interval after the exam showed significant difference between first year undergraduate studies and first year of a graduate program, indicating a higher degree of confidence in graduate students. Results also suggest that HRV in females is significantly lower than that in males before and after examination, despite men having greater sympathetic input. In conclusion, the results of our novel study assessing stress in real-time examination show important gender differences, and lack of adaptation with academic study year.
Collapse
Affiliation(s)
- Sabah Hammoud
- Laboratory of Experimental and Clinical Pharmacology, Department of Chemistry and Biochemistry, Faculty of Sciences, Section 1, Lebanese University, Rafic Hariri Educational Campus, P.O. Box 6573/14 Hadath, Lebanon.
| | - Rita Karam
- Laboratory of Experimental and Clinical Pharmacology, Department of Chemistry and Biochemistry, Faculty of Sciences, Section 1, Lebanese University, Rafic Hariri Educational Campus, P.O. Box 6573/14 Hadath, Lebanon.
| | - Rabih Mourad
- Laboratory of Experimental and Clinical Pharmacology, Department of Chemistry and Biochemistry, Faculty of Sciences, Section 1, Lebanese University, Rafic Hariri Educational Campus, P.O. Box 6573/14 Hadath, Lebanon.
| | - Iman Saad
- Laboratory of Experimental and Clinical Pharmacology, Department of Chemistry and Biochemistry, Faculty of Sciences, Section 1, Lebanese University, Rafic Hariri Educational Campus, P.O. Box 6573/14 Hadath, Lebanon.
| | - Mazen Kurdi
- Laboratory of Experimental and Clinical Pharmacology, Department of Chemistry and Biochemistry, Faculty of Sciences, Section 1, Lebanese University, Rafic Hariri Educational Campus, P.O. Box 6573/14 Hadath, Lebanon.
| |
Collapse
|
37
|
Value of Assessing Autonomic Nervous Function by Heart Rate Variability and Heart Rate Turbulence in Hypertensive Patients. Int J Hypertens 2018; 2018:4067601. [PMID: 30405909 PMCID: PMC6204178 DOI: 10.1155/2018/4067601] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2018] [Accepted: 09/26/2018] [Indexed: 11/18/2022] Open
Abstract
Purpose To explore the relationship between blood pressure control and autonomic nervous function assessing by heart rate variability (HRV) and heart rate turbulence (HRT) in hypertensive patients. Methods A total of 120 consecutive hypertensive patients and 80 nonhypertensive patients (N-HP group) were enrolled in this study. The hypertensive patients were divided into controlled blood pressure and uncontrolled blood pressure groups according to their blood pressure on admission. All subjects underwent 24-hour Holter monitoring. This study compared HRV and HRT in nonhypertensive and hypertensive patients and hypertensive patients with controlled and uncontrolled blood pressure. HRV parameters include square root of mean of the sum of squares of successive NN interval differences (rMSSD), number of successive NN intervals differing by > 50ms divided by the total number of successive NN intervals (pNN50), very low frequency (VLF) at frequency between 0.0033 and 0.04 Hz, low frequency (LF) at frequency between 0.04 and 0.15 Hz, and high frequency (HF) at frequency between 0.15 and 0.4 Hz. Turbulence slope (TS) belongs to HRT parameters. Results TS, rMSSD, pNN50, VLF, LF, and HF values were significantly lower in the HP group than in the N-HP group. Multiple logistic regression analysis showed that reduced TS, rMSSD, pNN50, LF, and HF values were risk factors of hypertension. TS, rMSSD, pNN50, VLF, LF, and HF values were significantly lower in hypertensive patients with uncontrolled blood pressure than in hypertensive patients with controlled blood pressure. Multiple logistic regression analysis showed that reduced TS, rMSSD, pNN50, VLF, LF, and HF values were risk factors for uncontrolled blood pressure. Conclusions This study indicates impaired autonomic nervous function in hypertensive patients, especially in hypertensive patients with uncontrolled blood pressure despite guideline recommended antihypertensive medications.
Collapse
|
38
|
Abreu RMD, Rehder-Santos P, Simões RP, Catai AM. Can high-intensity interval training change cardiac autonomic control? A systematic review. Braz J Phys Ther 2018; 23:279-289. [PMID: 30293954 DOI: 10.1016/j.bjpt.2018.09.010] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/19/2018] [Revised: 09/13/2018] [Accepted: 09/21/2018] [Indexed: 11/30/2022] Open
Abstract
BACKGROUND High intensity interval training (HIIT) has been used as a cardiovascular exercise strategy to promote greater adherence in cardiovascular rehabilitation. However, little is known about the effect of this training modality on cardiac autonomic control. OBJECTIVE To perform a systematic review to evaluate the effects of HIIT on cardiac autonomic responses in humans. METHODS PEDro, SCOPUS and PubMed were searched from the inception to March 29th, 2018. Moreover, the methodological quality and statistical reporting from all eligible clinical trials were assessed by the PEDro scale. The articles were eligible if: The primary objective was related to the effects of HIIT on the cardiac autonomic nervous system. Outcomes evaluated were indirect measures of cardiac autonomic control, represented by HRV indexes. RESULTS The search strategies resulted in 339 citations and 2 additional citations were identified through other sources. After deleting the duplicate articles and revising the full text, 6 articles were included. Overall, the results showed an improvement in parasympathetic and/or sympathetic modulation after HIIT, when evaluated by linear and non-linear indexes of HRV. CONCLUSIONS HIIT is a promising tool to improve the cardiac autonomic control, with more recommendation in healthy individuals and patients with metabolic syndrome.
Collapse
Affiliation(s)
- Raphael Martins de Abreu
- Cardiovascular Physical Therapy Laboratory, Department of Physical Therapy, Universidade Federal de Sao Carlos (UFSCar), São Carlos, SP, Brazil
| | - Patrícia Rehder-Santos
- Cardiovascular Physical Therapy Laboratory, Department of Physical Therapy, Universidade Federal de Sao Carlos (UFSCar), São Carlos, SP, Brazil
| | - Rodrigo Polaquini Simões
- Cardiovascular Physical Therapy Laboratory, Department of Physical Therapy, Universidade Federal de Sao Carlos (UFSCar), São Carlos, SP, Brazil
| | - Aparecida Maria Catai
- Cardiovascular Physical Therapy Laboratory, Department of Physical Therapy, Universidade Federal de Sao Carlos (UFSCar), São Carlos, SP, Brazil.
| |
Collapse
|
39
|
Lombardi F, Huikuri H, Schmidt G, Malik M. Short-term heart rate variability: Easy to measure, difficult to interpret. Heart Rhythm 2018; 15:1559-1560. [DOI: 10.1016/j.hrthm.2018.05.023] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/17/2018] [Indexed: 11/28/2022]
|
40
|
Sen J, McGill D. Fractal analysis of heart rate variability as a predictor of mortality: A systematic review and meta-analysis. CHAOS (WOODBURY, N.Y.) 2018; 28:072101. [PMID: 30070502 DOI: 10.1063/1.5038818] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2018] [Accepted: 07/10/2018] [Indexed: 05/21/2023]
Abstract
Previous studies have suggested benefits of applying fractal analysis to intervals between R waves in electrocardiography as an additional prognostic marker. The aim of this study was to investigate whether fractal analysis can provide an independent predictor of cardiac mortality or all-cause mortality. Prognostic cohort studies reporting fractal heart rate variability results from 24-h Holter monitor recordings were selected for comparison. Populations were subdivided into four groups-post-myocardial infarction, left ventricular dysfunction, other cardiac, and non-cardiac patients-and analysed using ANOVA, Forest plots (using pooled mean difference), and Funnel plots. The most significant mean differences were recorded in short-term fractal self-similarity (α1) (-0.17, 95% CI [-0.21, -0.13], p < 0.00001) and the traditional measure called standard deviation of NN intervals (SDNN) (-13.31, 95% CI [-18.89, -7.73], p < 0.00001) between the deceased and survivor groups. Fractal measures of long-term fractal self-similarity (α2), 1/f scaling (β), and traditional heart rate variability measures of high frequency to low frequency ratio show promise. This review indicated that fractal measure α1 and traditional measure SDNN could be potential predictors of mortality, but require further assessment to determine appropriate thresholds for clinical significance and additional targeted prognostic studies to properly define their applicability as prognostic markers. Therefore, clinicians should interpret fractal and traditional measures with caution since such measures have yet to be fully described as biomarkers for clinical application.
Collapse
Affiliation(s)
- Jonathan Sen
- Cardiology Research Unit, University Hospital Geelong, Barwon Health, PO Box 281, Geelong, Victoria 3220, Australia
| | - Darryl McGill
- Cardiology Department, Canberra Hospital, Yamba Drive, Garran, Australian Capital Territory 2605, Australia
| |
Collapse
|
41
|
Chen Y, Yu Y, Zou W, Zhang M, Wang Y, Gu Y. Association between cardiac autonomic nervous dysfunction and the severity of coronary lesions in patients with stable coronary artery disease. J Int Med Res 2018; 46:3729-3740. [PMID: 29936852 PMCID: PMC6135996 DOI: 10.1177/0300060518778416] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Objective Autonomic dysfunction is recognized in patients with coronary artery disease
(CAD) and is related to worse cardiovascular outcome. This study aimed to
evaluate cardiac autonomic nervous function by heart rate recovery (HRR) and
heart rate variability (HRV), and demonstrate their relationship with the
severity of coronary lesions in patients with stable CAD (SCAD). Methods Consecutive patients without CAD (controls, n = 65) and those with SCAD
(n = 63) were included in this study. Patients with SCAD were further
divided into single- or two-/three-vessel disease, as well as <70% or
≥70% stenosis subgroups. The association between HRR/HRV and coronary
lesions was analysed. Results HRR and HRV values were significantly lower in the SCAD group compared with
the control group. Multivariate logistic regression analysis showed that
abnormal HRR and HRV were risk factors of SCAD. Moreover, delayed HRR was a
risk factor of the severity of coronary lesions. Conclusions Our results show that autonomic function is impaired in patients with SCAD
and delayed HRR is closely related to the severity of coronary lesions.
Collapse
Affiliation(s)
- Yafei Chen
- Department of Cardiology, Puai Hospital, Huazhong University of Science and Technology, Wuhan, China
| | - Yijun Yu
- Department of Cardiology, Puai Hospital, Huazhong University of Science and Technology, Wuhan, China
| | - Wusong Zou
- Department of Cardiology, Puai Hospital, Huazhong University of Science and Technology, Wuhan, China
| | - Mingjing Zhang
- Department of Cardiology, Puai Hospital, Huazhong University of Science and Technology, Wuhan, China
| | - Yuting Wang
- Department of Cardiology, Puai Hospital, Huazhong University of Science and Technology, Wuhan, China
| | - Ye Gu
- Department of Cardiology, Puai Hospital, Huazhong University of Science and Technology, Wuhan, China
| |
Collapse
|
42
|
Ahammer H, Scheruebel S, Arnold R, Mayrhofer-Reinhartshuber M, Lang P, Dolgos Á, Pelzmann B, Zorn-Pauly K. Sinoatrial Beat to Beat Variability Assessed by Contraction Strength in Addition to the Interbeat Interval. Front Physiol 2018; 9:546. [PMID: 29867582 PMCID: PMC5968354 DOI: 10.3389/fphys.2018.00546] [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: 02/16/2018] [Accepted: 04/27/2018] [Indexed: 12/01/2022] Open
Abstract
Beat to beat variability of cardiac tissue or isolated cells is frequently investigated by determining time intervals from electrode measurements in order to compute scale dependent or scale independent parameters. In this study, we utilize high-speed video camera recordings to investigate the variability of intervals as well as mechanical contraction strengths and relative contraction strengths with nonlinear analyses. Additionally, the video setup allowed us simultaneous electrode registrations of extracellular potentials. Sinoatrial node tissue under control and acetylcholine treated conditions was used to perform variability analyses by computing sample entropies and Higuchi dimensions. Beat to beat interval variabilities measured by the two recording techniques correlated very well, and therefore, validated the video analyses for this purpose. Acetylcholine treatment induced a reduction of beating rate and contraction strength, but the impact on interval variability was negligible. Nevertheless, the variability analyses of contraction strengths revealed significant differences in sample entropies and Higuchi dimensions between control and acetylcholine treated tissue. Therefore, the proposed high-speed video camera technique might represent a non-invasive tool that allows long-lasting recordings for detecting variations in beating behavior over a large range of scales.
Collapse
Affiliation(s)
- Helmut Ahammer
- Institute of Biophysics, Medical University of Graz, Graz, Austria
| | | | - Robert Arnold
- Institute of Biophysics, Medical University of Graz, Graz, Austria
| | | | - Petra Lang
- Institute of Biophysics, Medical University of Graz, Graz, Austria
| | - Ádám Dolgos
- Institute for eHealth, Graz University of Applied Sciences, Graz, Austria
| | | | - Klaus Zorn-Pauly
- Institute of Biophysics, Medical University of Graz, Graz, Austria
| |
Collapse
|
43
|
Cardiac autonomic modulation impairments in advanced breast cancer patients. Clin Res Cardiol 2018; 107:924-936. [PMID: 29721647 DOI: 10.1007/s00392-018-1264-9] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/12/2018] [Accepted: 04/25/2018] [Indexed: 02/07/2023]
Abstract
AIM To compare cardiac autonomic modulation in early- versus advanced-stage breast cancer patients before any type of cancer treatment and investigate associated factors. METHODS AND RESULTS This cross-sectional study included women (30-69 years old) with primary diagnosis of breast cancer and women with benign breast tumors. We evaluated cardiac modulation by heart rate variability and assessed factors of anxiety, depression, physical activity, and other relevant medical variables. Patients were divided into three groups based on TNM staging of cancer severity: early-stage cancer (n = 42), advanced-stage cancer (n = 37), or benign breast tumors to serve as a control (n = 37). We analyzed heart rate variability in time and frequency domains. The advanced-stage cancer group had lower vagal modulation than early-stage and benign groups; also, the advance-stage group had lower overall heart rate variability when compared to benign conditions. Heart rate variability was influenced by age, menopausal status, and BMI. CONCLUSIONS Heart rate variability seems to be a promising, non-invasive tool for early diagnosis of autonomic dysfunction in breast cancer and detection of cardiovascular impairments at cancer diagnosis. Cardiac autonomic modulation is inversely associated with breast cancer staging.
Collapse
|
44
|
Kocabas ZU, Kizilay F, Basarici I, Uysal H. Evaluation of cardiac autonomic functions in myasthenia gravis. Neurol Res 2018; 40:405-412. [PMID: 29607742 DOI: 10.1080/01616412.2018.1446690] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
OBJECTIVE We aimed to comprehensively evaluate cardiac autonomic function in patients with MG and to investigate the relationship between this disorder and disease duration, thymoma and acetylcholine receptor antibody positivity in cases of cardiac autonomic disorder. METHODS The study included 30 patients with MG and 30 age-matched healthy control subjects. Haemodynamic parameters (heart rate, systolic and diastolic blood pressure) and autonomic parameters (low frequency [LF], high-frequency [HF], sympathovagal balance [LF/HF], baroreceptor reflex sensitivity [BRS]) of the patients were automatically measured at rest and in a tilted position with the Task Force Monitor. RESULTS The mean systolic and diastolic blood pressure measurements obtained at rest and during the tilt test were higher in patients with MG. Sympathovagal balance has been disturbed in favour of sympathetic tone, and parasympathetic insufficiency has become more prominent. When baroreceptor sensitivity was used as the second parameter to evaluate autonomic heart functions, BRS at rest and during the tilt test was lower in the MG group compared with the control group. DISCUSSION These results suggest that sympathovagal balance has been disturbed in favour of sympathetic tone and that parasympathetic insufficiency has become more prominent. The current findings support the presence of cardiac autonomic involvement in patients with MG. The determination of cardiac autonomic function via noninvasive methods among patients with MG has high predictive value. The identification of autonomic dysfunction at an early stage and the early treatment of cardiovascular diseases can reduce morbidity and mortality.
Collapse
Affiliation(s)
- Zehra Uysal Kocabas
- a Department of Anesthesiology , Osmangazi University, Medical School Hospital , Eskisehir , Turkey
| | - Ferah Kizilay
- b Department of Neurology , Akdeniz University, Medical School Hospital , Antalya , Turkey
| | - Ibrahim Basarici
- c Department of Cardiology , Akdeniz University, Medical School Hospital , Antalya , Turkey
| | - Hilmi Uysal
- b Department of Neurology , Akdeniz University, Medical School Hospital , Antalya , Turkey
| |
Collapse
|
45
|
Zhu H, Wang H, Liu Z, Li D, Kou G, Li C. Experimental study on the human thermal comfort based on the heart rate variability (HRV) analysis under different environments. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 616-617:1124-1133. [PMID: 29096956 DOI: 10.1016/j.scitotenv.2017.10.208] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2017] [Revised: 09/29/2017] [Accepted: 10/20/2017] [Indexed: 06/07/2023]
Abstract
In order to study the human thermal comfort under different environments, the electrocardiogram (ECG) data of 6 subjects were recorded continuously under 60 environments composed by different air temperature, relative humidity and air speed that were created by an environmental chamber. Based on the ECG data, the frequency-domain method was adopted to obtain the heart rate variability (HRV) results. Among the HRV indices, the ratio of the low frequency power and high frequency power of the HRV analysis results (LF/HF), which reflects the balance of the autonomic nervous system, was selected as an indicator of the thermal comfort in the study. And the effects of air temperature, relative humidity and air speed on LF/HF were scrutinized. Meanwhile, a questionnaire survey was conducted during the experiment to evaluate the thermal comfort of the subjects. And the relationships between mean LF/HF and thermal sensation, mean thermal comfort were established based on the survey. The results showed that different LF/HF was observed under different environments, and that the air temperature had the most significant effects on LF/HF. The changes in the air temperature could easily lead to the excitation of the sympathetic nerve that could promote the activities of the thermoregulatory effectors thus thermal discomfort. Additionally, the fitting curves illustrating the relationships between LF/HF and thermal sensation and thermal comfort showed that the higher LF/HF yielded thermal discomfort, while the low LF/HF indicated a thermally acceptable state.
Collapse
Affiliation(s)
- Hui Zhu
- Provincial Engineering Laboratory of Hunan for the Technologies of Building Environment Control, University of South China, Hengyang 421001, China; School of Energy Science and Engineering, Central South University, Changsha 410083, China.
| | - Hanqing Wang
- Provincial Engineering Laboratory of Hunan for the Technologies of Building Environment Control, University of South China, Hengyang 421001, China; Collaborative Innovation Center for Building Energy-conservation and Environment Control, Hunan University of Technology, Zhuzhou 412001, China.
| | - Zhiqiang Liu
- School of Energy Science and Engineering, Central South University, Changsha 410083, China; Collaborative Innovation Center for Building Energy-conservation and Environment Control, Hunan University of Technology, Zhuzhou 412001, China.
| | - Duanru Li
- School of Energy Science and Engineering, Central South University, Changsha 410083, China; Collaborative Innovation Center for Building Energy-conservation and Environment Control, Hunan University of Technology, Zhuzhou 412001, China
| | - Guangxiao Kou
- Collaborative Innovation Center for Building Energy-conservation and Environment Control, Hunan University of Technology, Zhuzhou 412001, China
| | - Can Li
- Collaborative Innovation Center for Building Energy-conservation and Environment Control, Hunan University of Technology, Zhuzhou 412001, China
| |
Collapse
|
46
|
Expression and relevance of the G protein-gated K + channel in the mouse ventricle. Sci Rep 2018; 8:1192. [PMID: 29352184 PMCID: PMC5775354 DOI: 10.1038/s41598-018-19719-x] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2017] [Accepted: 01/08/2018] [Indexed: 12/31/2022] Open
Abstract
The atrial G protein-gated inwardly rectifying K+ (GIRK) channel is a critical mediator of parasympathetic influence on cardiac physiology. Here, we probed the details and relevance of the GIRK channel in mouse ventricle. mRNAs for the atrial GIRK channel subunits (GIRK1, GIRK4), M2 muscarinic receptor (M2R), and RGS6, a negative regulator of atrial GIRK-dependent signaling, were detected in mouse ventricle at relatively low levels. The cholinergic agonist carbachol (CCh) activated small GIRK currents in adult wild-type ventricular myocytes that exhibited relatively slow kinetics and low CCh sensitivity; these currents were absent in ventricular myocytes from Girk1-/- or Girk4-/- mice. While loss of GIRK channels attenuated the CCh-induced shortening of action potential duration and suppression of ventricular myocyte excitability, selective ablation of GIRK channels in ventricle had no effect on heart rate, heart rate variability, or electrocardiogram parameters at baseline or after CCh injection. Additionally, loss of ventricular GIRK channels did not impact susceptibility to ventricular arrhythmias. These data suggest that the mouse ventricular GIRK channel is a GIRK1/GIRK4 heteromer, and show that while it contributes to the cholinergic suppression of ventricular myocyte excitability, this influence does not substantially impact cardiac physiology or ventricular arrhythmogenesis in the mouse.
Collapse
|
47
|
Huvanandana J, Thamrin C, Tracy MB, Hinder M, Nguyen CD, McEwan AL. Advanced analyses of physiological signals in the neonatal intensive care unit. Physiol Meas 2017; 38:R253-R279. [DOI: 10.1088/1361-6579/aa8a13] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
48
|
Sagarra-Romero L, Ruidiaz Peña M, Monroy Antón A, Calero Morales S. ithlete Heart Rate Variability app: knowing when to train. Br J Sports Med 2017. [DOI: 10.1136/bjsports-2016-097303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
|
49
|
Kubera B, Leonhard C, Röβler A, Peters A. Stress-Related Changes in Body Form: Results from the Whitehall II Study. Obesity (Silver Spring) 2017; 25:1625-1632. [PMID: 28767203 PMCID: PMC5573629 DOI: 10.1002/oby.21928] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/02/2017] [Revised: 06/06/2017] [Accepted: 06/15/2017] [Indexed: 12/27/2022]
Abstract
OBJECTIVE Stress is associated with body mass gain in some people but with body mass loss in others. When the stressor persists, some people adapt with their stress responses, whereas others do not. Heart rate variability (HRV) reflects autonomic variability and is related to stress responses to psychosocial challenges. It was hypothesized that the combined effects of stress exposure and autonomic variability predict long-term changes in body form. METHODS Data of 1,369 men and 612 women from the Whitehall II cohort were analyzed. BMI, hip-to-height ratio, and waist-to-height ratio were measured at three time points over a 10-year period. HRV and psychological distress (General Health Questionnaire) were assessed. RESULTS Men with high psychological distress were at risk of developing an increased waist-to-height ratio (F = 3.4, P = 0.038). Men with high psychological distress and low HRV were prone to develop an increased body mass and hip-to-height ratio (psychological distress: F = 4.3, P = 0.016; HRV: F = 5.0, P = 0.008). Statistical trends showed that women displayed similar patterns of stress-related changes in body form (P = 0.061; P = 0.063). CONCLUSIONS Assessing psychological distress and autonomic variability predicts changes in body form. Psychological distress was found to be associated with an increased risk of developing the wide-waisted phenotype, while psychological distress combined with low autonomic variability was associated with an increased risk of developing the corpulent phenotype.
Collapse
Affiliation(s)
- Britta Kubera
- Medical Clinic 1, University of Lübeck, Lübeck, Germany
| | | | - Andreas Röβler
- Institute of Mathematics, University of Lübeck, Lübeck, Germany
| | - Achim Peters
- Medical Clinic 1, University of Lübeck, Lübeck, Germany
- Address of Correspondence: Achim Peters, Professor of Internal Medicine, Brain Metabolism, Neuroenergetics, Obesity and Diabetes, Medical Clinic I, University of Lübeck, Center of Brain, Behavior and Metabolism, Marie-Curie-Straβe, 23538 Lübeck, Germany, Tel.: +49-451-31017859,
| |
Collapse
|
50
|
Liu Q, Han L, Chang F, Chen G, Li X, Xia L. The relationship between the autonomic nervous function and early renal dysfunction in elderly patients with mild-to-moderate essential hypertension. Clin Exp Hypertens 2017; 40:136-140. [PMID: 28786697 DOI: 10.1080/10641963.2017.1346110] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Qunwei Liu
- Department of Cardiology, Civil Aviation General Hospital, Beijing, PR China
| | - Limin Han
- Department of Cardiology, Civil Aviation General Hospital, Beijing, PR China
| | - Feng Chang
- Department of Cardiology, Civil Aviation General Hospital, Beijing, PR China
| | - Guoyan Chen
- Department of Cardiology, Civil Aviation General Hospital, Beijing, PR China
| | - Xinrui Li
- Department of Cardiology, Civil Aviation General Hospital, Beijing, PR China
| | - Lijiao Xia
- Clinical laboratory, Civil Aviation General Hospital, Beijing, PR China
| |
Collapse
|