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Heart Rate Variability and CAD

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https://www.readbyqxmd.com/read/29785154/detection-of-coronary-artery-disease-by-reduced-features-and-extreme-learning-machine
#1
Ram Sewak Singh, Barjinder Singh Saini, Ramesh Kumar Sunkaria
Objective: Cardiovascular diseases generate the highest mortality in the globe population, mainly due to coronary artery disease (CAD) like arrhythmia, myocardial infarction and heart failure. Therefore, an early identification of CAD and diagnosis is essential. For this, we have proposed a new approach to detect the CAD patients using heart rate variability (HRV) signals. This approach is based on subspaces decomposition of HRV signals using multiscale wavelet packet (MSWP) transform and entropy features extracted from decomposed HRV signals...
2018: Clujul Medical (1957)
https://www.readbyqxmd.com/read/29757824/improvements-in-key-cardiopulmonary-exercise-testing-variables-following-cardiac-rehabilitation-in-patients-with-coronary-artery-disease
#2
Dejana Popovic, Nikhil Kumar, Sundeep Chaudhry, Akshay Bagai, Ross Arena, Naresh Kumar
PURPOSE: Improvements in cardiorespiratory fitness (VO2peak) post-cardiac rehabilitation (post-CR) are used to gauge therapeutic efficacy. The aim of the present study was to assess the effect of supervised CR on other cardiopulmonary exercise testing (CPX) variables, specifically those that reflect ventilatory efficiency and VO2 changes in relation to changes in work rate (WR). METHODS: Patients (n = 142; mean age 63 ± 9 y; 23% female) with coronary artery disease (CAD) participated in supervised CR for 3 to 6 mo completing 60 ± 17 sessions (range: 32-96 sessions), with intensity derived from the baseline CPX...
May 11, 2018: Journal of Cardiopulmonary Rehabilitation and Prevention
https://www.readbyqxmd.com/read/29696208/study-protocol-for-the-fitr-heart-study-feasibility-safety-adherence-and-efficacy-of-high-intensity-interval-training-in-a-hospital-initiated-rehabilitation-program-for-coronary-heart-disease
#3
Jenna Taylor, Shelley E Keating, Michael D Leveritt, David J Holland, Sjaan R Gomersall, Jeff S Coombes
Background: For decades, moderate intensity continuous training (MICT) has been the cornerstone of exercise prescription for cardiac rehabilitation (CR). High intensity interval training (HIIT) is now recognized in CR exercise guidelines as an appropriate and efficient modality for improving cardiorespiratory fitness, a strong predictor of mortality. However, the clinical application of HIIT in a real world CR setting, in terms of feasibility, safety, and long-term adherence, needs further investigation to address ongoing reservations...
December 2017: Contemporary Clinical Trials Communications
https://www.readbyqxmd.com/read/29656272/characterisation-of-cardiac-autonomic-function-in-multiple-sclerosis-based-on-spontaneous-changes-of-heart-rate-and-blood-pressure
#4
Fatemeh Shirbani, Edward Barin, Yi-Ching Lee, Karl Ng, John Douglas Edward Parratt, Mark Butlin, Alberto P Avolio
BACKGROUND: Prevalence of cardiovascular autonomic dysfunction (CAD) in multiple sclerosis (MS) varies between studies. Cardiac autonomic function is usually assessed by cardiovascular reflex tests. We hypothesized that MS is associated with CAD, quantifiable by non-invasive means including quantification of baroreceptor sensitivity (BRS) and heart rate variability. METHODS: In this study a comprehensive suite of cardiovascular autonomic tests based only on the spontaneous changes of heart rate and blood pressure was applied to 23 MS patients and age and gender-matched controls...
March 27, 2018: Multiple Sclerosis and related Disorders
https://www.readbyqxmd.com/read/29542251/water-exercise-in-coronary-artery-disease-patients-effects-on-heart-rate-variability-and-body-composition-a-randomized-controlled-trial
#5
Elie Fiogbé, Rafaela Ferreira, Márcio Antônio Gonçalves Sindorf, Silvia Aparecida Tavares, Keiti Passoni de Souza, Marcelo de Castro Cesar, Charles Ricardo Lopes, Marlene Aparecida Moreno
BACKGROUND AND PURPOSE: It is important to assess the effectiveness and efficiency of water-based training programs in order to prescribe it as an alternative in cardiac rehabilitation for patients who have coronary artery disease (CAD). In these patients, autonomic dysfunction is an important physiological change strongly associated with adverse outcomes, morbidity, and mortality. Given that the beneficial effects of physical training in CAD patients have been traditionally evidenced with programs involving land-based aerobic exercises, this study aims to evaluate the effects of water aerobic exercise training (WAET) on the autonomic modulation of heart rate (HR) and body composition, in the rehabilitation of CAD patients...
March 14, 2018: Physiotherapy Research International: the Journal for Researchers and Clinicians in Physical Therapy
https://www.readbyqxmd.com/read/29317133/ability-of-the-prognostic-model-of-j-access-study-to-predict-cardiac-events-in-a-clinical-setting-the-approach-study
#6
Isao Aburadani, Kazuo Usuda, Hisashi Sumiya, Satoru Sakagami, Hiroaki Kiyokawa, Shinro Matsuo, Masayuki Takamura, Hisayoshi Murai, Shinichiro Takashima, Teppei Kitano, Koichi Okuda, Kenichi Nakajima
BACKGROUND: In patients with coronary artery disease (CAD), one of the risk models available in Japan was a multivariate risk prediction model based on a Japanese multicenter database: the Japanese Assessment of Cardiac Events and Survival Study by Quantitative Gated SPECT (J-ACCESS). The aim of this study was to clinically validate the accuracy of this risk model. METHODS: We evaluated the performance of the J-ACCESS model using data derived from the Assessment of the Predicted value of PROgnosis of cArdiaC events in Hokuriku (APPROACH) registry...
January 6, 2018: Journal of Cardiology
https://www.readbyqxmd.com/read/29297147/one-year-cardiovascular-prognosis-of-the-randomized-controlled-short-term-heart-rate-variability-biofeedback-among-patients-with-coronary-artery-disease
#7
Li-Ching Yu, I-Mei Lin, Sheng-Yu Fan, Chin-Lung Chien, Tsung-Hsien Lin
PURPOSE: Heart rate variability biofeedback (HRV-BF) is an effective psychophysiological intervention, with short-term effects of increased autonomic nervous system homeostasis, strengthened baroreflex sensitivity, and decreased hostility in patients with coronary artery disease (CAD). The study examined the 1-year HRV-BF effect on cardiovascular prognosis of these patients. METHODS: Of 222 patients with CAD referred by cardiologists, 210 were screened and randomly assigned to the HRV-BF and control groups...
January 2, 2018: International Journal of Behavioral Medicine
https://www.readbyqxmd.com/read/29204786/the-influence-of-comprehensive-cardiac-rehabilitation-on-heart-rate-variability-indices-after-cabg-is-more-effective-than-after-pci
#8
Katarzyna Szmigielska, Anna Szmigielska-Kapłon, Anna Jegier
The aim of this study was to evaluate the influence of cardiac rehabilitation (CR) on heart rate variability (HRV) indices in men with coronary artery disease (CAD) treated with percutaneous coronary intervention (PCI) or coronary artery bypass graft surgery (CABG). The study population consisted of 131 male patients with CAD prospectively and consecutively admitted to CR after PCI n = 72, or CABG n = 59. Participants performed cycle ergometer interval training for 45 min three times a week for 8 weeks...
February 2018: Journal of Cardiovascular Translational Research
https://www.readbyqxmd.com/read/29184505/heart-rate-fragmentation-a-symbolic-dynamical-approach
#9
Madalena D Costa, Roger B Davis, Ary L Goldberger
Background: We recently introduced the concept of heart rate fragmentation along with a set of metrics for its quantification. The term was coined to refer to an increase in the percentage of changes in heart rate acceleration sign, a dynamical marker of a type of anomalous variability. The effort was motivated by the observation that fragmentation, which is consistent with the breakdown of the neuroautonomic-electrophysiologic control system of the sino-atrial node, could confound traditional short-term analysis of heart rate variability...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/29129350/evaluation-of-ecg-algorithms-designed-to-improve-detect-of-transient-myocardial-ischemia-to-minimize-false-alarms-in-patients-with-suspected-acute-coronary-syndrome
#10
Michele M Pelter, Yuan Xu, Richard Fidler, Ran Xiao, David W Mortara, Hu Xiao
BACKGROUND: Patients hospitalized for suspected acute coronary syndrome (ACS) are at risk for transient myocardial ischemia. During the "rule-out" phase, continuous ECG ST-segment monitoring can identify transient myocardial ischemia, even when asymptomatic. However, current ST-segment monitoring software is vastly underutilized due to false positive alarms, with resultant alarm fatigue. Current ST algorithms may contribute to alarm fatigue because; (1) they are not designed with a delay (minutes), rather alarm to brief spikes (i...
March 2018: Journal of Electrocardiology
https://www.readbyqxmd.com/read/29042294/impaired-cardiac-autonomic-regulation-and-long-term-risk-of-atrial-fibrillation-in-patients-with-coronary-artery-disease
#11
Santeri Nortamo, Olavi Ukkola, Antti Kiviniemi, Mikko Tulppo, Heikki Huikuri, Juha S Perkiömäki
BACKGROUND: The influence of autonomic cardiac regulation on long-term risk of new-onset atrial fibrillation (AF) in coronary artery disease (CAD) is not well established. OBJECTIVE: The purpose of this study was to evaluate the value of heart rate variability, a marker of cardiac autonomic regulation, in predicting new-onset AF in CAD. METHODS: The Innovation to Reduce Cardiovascular Complications of Diabetes at the Intersection study population consisted of 1946 patients with CAD...
March 2018: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/28989893/an-intriguing-family-with-type-2-diabetes-mellitus-and-complete-heart-block
#12
Gaurav Agarwal, Satish Kumar Singh
Chronic hyperglycaemia of Type 2 Diabetes Mellitus (T2DM) causes long term damage to heart resulting in coronary artery disease (CAD), myocardial infarction (MI), congestive heart failure (CHF), and sudden death from arrhythmias. A 62 year old male presented to our emergency with complaint of sudden onset giddiness from last 2 hours. This was followed by loss of consciousness. Patient was a known case of T2DM since last 1 year. Family history- patient has two brothers who also have T2DM and both of them also developed Complete Heart Block (CHB) spontaneously...
September 2017: Indian Journal of Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28981382/association-between-mental-health-burden-and-coronary-artery-disease-in-u-s-women-veterans-over-45-a-national-cross-sectional-study
#13
Megan R Gerber, Matthew W King, Katherine M Iverson, Suzanne L Pineles, Sally G Haskell
BACKGROUND: The women Veteran population accessing Veterans Health Administration (VA) care has grown rapidly. Women Veterans exhibit high rates of mental health conditions that increase coronary artery disease (CAD) risk; however, the relationship between specific conditions and increasing mental health burden to CAD in this population is unknown. MATERIALS AND METHODS: Using VA National Patient Care Data for 2009, we identified women Veterans over 45 (N = 157,195)...
October 5, 2017: Journal of Women's Health
https://www.readbyqxmd.com/read/28974833/comparing-hemodynamic-responses-to-diazepam-propofol-and-etomidate-during-anesthesia-induction-in-patients-with-left-ventricular-dysfunction-undergoing-coronary-artery-bypass-graft-surgery-a-double-blind-randomized-clinical-trial
#14
Aria Soleimani, Neda Heidari, Mohammad Reza Habibi, Farshad Hasanzadeh Kiabi, Mohammad Khademloo, Amir Emami Zeydi, Fatemeh Bozorg Sohrabi
BACKGROUND: Anesthesia induction is often accompanied by a period of hemodynamic instability, which could be deleterious in patients with coronary artery disease (CAD) and left ventricular dysfunction undergoing coronary artery bypass graft (CABG) surgery. The aim of this study was to compare the hemodynamic responses to propofol, etomidate, and diazepam following anesthesia induction, laryngoscopy and intubation in CABG surgery patients with low ejection fraction (EF). METHODS: A double-blind randomized, clinical study was performed on 150 patients with CAD and left ventricular dysfunction (EF≤35%) scheduled for elective CABG surgery with Cardiopulmonary bypass (CPB)...
June 2017: Medical Archives
https://www.readbyqxmd.com/read/28933714/hr-%C3%AC-v-775-o-8322-and-rpe-relationships-in-an-aquatic-incremental-maximum-test-performed-by-young-women
#15
Gabriela B David, Luana S Andrade, Gustavo Z Schaun, Cristine L Alberton
David, GB, Andrade, LS, Schaun, GZ, and Alberton, CL. HR, V̇O₂, and RPE relationships in an aquatic incremental maximum test performed by young women. J Strength Cond Res 31(10): 2852-2858, 2017-The purpose of the study was to verify the relationship between oxygen uptake (V̇O₂), heart rate (HR), rate of perceived exertion (RPE), and cadence (CAD) in an aquatic incremental maximum test performed during a water-based stationary running exercise. The study also verified the best adjustments for these relationships (linear or polynomial)...
October 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28914638/long-term-risk-and-predictors-of-cardiovascular-death-in-stable-coronary-artery-disease-the-coronor-study
#16
Christophe Bauters, Olivier Tricot, Thibaud Meurice, Nicolas Lamblin
BACKGROUND: There is limited knowledge on the residual risk of cardiovascular death (CVD) in patients with stable coronary artery disease (CAD) who receive modern secondary prevention. Our aim was to analyze the causes of death and to determine predictors of CVD in the 5-year CORONOR registry. METHODS: We studied 4184 consecutive CAD outpatients who were free from any myocardial infarction (MI) or coronary revascularization for more than 1 year at inclusion. Antithrombotics were prescribed in 99%, statins in 92%, inhibitors of renin-angiotensin system in 82%, and β-blockers in 79%; 86% had prior coronary revascularization...
December 2017: Coronary Artery Disease
https://www.readbyqxmd.com/read/28662007/-evaluation-of-sleep-apnea-detected-by-24-hour-ecg-holter-monitoring-analysis-in-patients-with-stable-coronary-artery-disease-and-ischemic-heart-failure-correlations-with-clinical-data
#17
Magdalena Frączek-Jucha, Paweł Rostoff, Jacek Łach, Jadwiga Nessler, Andrzej Gackowski
Obstructive sleep apnoea (OSA) is frequently undiagnosed in patients with heart failure (HF) and coronary artery disease (CAD). Simple and widely available screening tests are needed to diagnose patients with SA. Measurements of thoracic impedance and heart rate variability during 24-hour ECG Holter (H-EKG) monitoring allows to calculate estimated apnoea-hypopnoea index (eAHI). AIM: The aim of the research was to assess prevalence of OSA evaluated with the use of H-EKG and determination of its clinical relevance in patients with CAD and ischeamic HF...
June 23, 2017: Polski Merkuriusz Lekarski: Organ Polskiego Towarzystwa Lekarskiego
https://www.readbyqxmd.com/read/28636505/the-effect-of-aerobic-interval-training-and-continuous-training-on-exercise-capacity-and-its-determinants
#18
Nele Pattyn, Paul J Beckers, Véronique A Cornelissen, Ellen Coeckelberghs, Catherine De Maeyer, Geert Frederix, Kaatje Goetschalckx, Nadine Possemiers, Dirk Schepers, Emeline M Van Craenenbroeck, Kurt Wuyts, Viviane M Conraads, Luc Vanhees
Objective We aimed to investigate (1) the effects of aerobic interval training (AIT) and aerobic continuous training (ACT) on (sub)maximal exercise measures and its determinants including endothelial function, muscle strength and cardiac autonomic function, and (2) the relationship between exercise capacity and these determinants. Methods Two-hundred coronary artery disease (CAD) patients (58.4 ± 9.1 years) were randomized to AIT or ACT for 12 weeks. All patients performed a cardiopulmonary exercise test and endothelial function measurements before and after the intervention; a subpopulation underwent muscle strength and heart rate variability (HRV) assessments...
June 2017: Acta Cardiologica
https://www.readbyqxmd.com/read/28536533/heart-rate-fragmentation-a-new-approach-to-the-analysis-of-cardiac-interbeat-interval-dynamics
#19
Madalena D Costa, Roger B Davis, Ary L Goldberger
Background: Short-term heart rate variability (HRV) is most commonly attributed to physiologic vagal tone modulation. However, with aging and cardiovascular disease, the emergence of high short-term HRV, consistent with the breakdown of the neuroautonomic-electrophysiologic control system, may confound traditional HRV analysis. An apparent dynamical signature of such anomalous short-term HRV is frequent changes in heart rate acceleration sign, defined here as heart rate fragmentation. Objective: The aims were to: (1) introduce a set of metrics designed to probe the degree of sinus rhythm fragmentation; (2) test the hypothesis that the degree of fragmentation of heartbeat time series increases with the participants' age in a group of healthy subjects; (3) test the hypothesis that the heartbeat time series from patients with advanced coronary artery disease (CAD) are more fragmented than those from healthy subjects; and (4) compare the performance of the new fragmentation metrics with standard time and frequency domain measures of short-term HRV...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28387685/investigation-of-heart-rate-variability-of-patients-undergoing-coronary-artery-bypass-grafting-cabg
#20
A Hossen, D Jaju, M Al-Abri, H Al-Sabti, M Mukaddirov, M Hassan, K Al-Hashmi
BACKGROUND: Myocardial revascularization by coronary artery bypass grafting (CABG) is an effective measure for reducing symptoms and mortality in patients with unstable or severe coronary artery disease (CAD). Autonomic function can be estimated non-invasively using heart rate variability (HRV). HRV of patients undergoing CABG is investigated before and after CABG using a soft-decision wavelet based spectral analysis. OBJECTIVE: The main purpose of this work is to evaluate non-invasively HRV in patients undergoing CABG before operation; and to monitor the status of patients through HRV investigation on day 6 and day 30 after the CABG operation...
2017: Technology and Health Care: Official Journal of the European Society for Engineering and Medicine
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