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Heart Rate Variability and CAD

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https://www.readbyqxmd.com/read/27886710/automated-diagnosis-of-coronary-artery-disease-cad-patients-using-optimized-svm
#1
Azam Davari Dolatabadi, Siamak Esmael Zadeh Khadem, Babak Mohammadzadeh Asl
BACKGROUND AND OBJECTIVE: Currently Coronary Artery Disease (CAD) is one of the most prevalent diseases, and also can lead to death, disability and economic loss in patients who suffer from cardiovascular disease. Diagnostic procedures of this disease by medical teams are typically invasive, although they do not satisfy the required accuracy. METHODS: In this study, we have proposed a methodology for the automatic diagnosis of normal and Coronary Artery Disease conditions using Heart Rate Variability (HRV) signal extracted from electrocardiogram (ECG)...
January 2017: Computer Methods and Programs in Biomedicine
https://www.readbyqxmd.com/read/27835972/the-association-of-functional-polymorphisms-in-genes-encoding-growth-factors-for-endothelial-cells-and-smooth-muscle-cells-with-the-severity-of-coronary-artery-disease
#2
Tadeusz Osadnik, Joanna Katarzyna Strzelczyk, Andrzej Lekston, Rafał Reguła, Kamil Bujak, Martyna Fronczek, Marcin Gawlita, Małgorzata Gonera, Jarosław Wasilewski, Bożena Szyguła-Jurkiewicz, Marek Gierlotka, Mariusz Gąsior
BACKGROUND: Despite the important roles of vascular smooth muscle cells and endothelial cells in atherosclerotic lesion formation, data regarding the associations of functional polymorphisms in the genes encoding growth factors with the severity of coronary artery disease (CAD) are lacking. The aim of the present study is to analyze the relationships between functional polymorphisms in genes encoding basic fibroblast growth factor (bFGF, FGF2), epidermal growth factor (EGF), insulin-like growth factor-1 (IGF-1), platelet derived growth factor-B (PDGFB), transforming growth factor-β1 (TGF-β1) and vascular endothelial growth factor A (VEGF-A) and the severity of coronary atherosclerosis in patients with stable CAD undergoing their first coronary angiography...
November 11, 2016: BMC Cardiovascular Disorders
https://www.readbyqxmd.com/read/27797930/effects-of-liraglutide-on-heart-rate-and-heart-rate-variability-a-randomized-double-blind-placebo-controlled-crossover-study
#3
Preman Kumarathurai, Christian Anholm, Bjørn S Larsen, Rasmus Huan Olsen, Sten Madsbad, Ole Kristiansen, Olav W Nielsen, Steen B Haugaard, Ahmad Sajadieh
OBJECTIVE: Reduced heart rate variability (HRV) and increased heart rate (HR) have been associated with cardiovascular mortality. Glucagon-like peptide 1 receptor agonists (GLP-1 RAs) increase HR, and studies have suggested that they may reduce HRV. We examined the effect of the GLP-1 RA liraglutide on HRV and diurnal variation of HR in overweight patients with newly diagnosed type 2 diabetes (T2D) and stable coronary artery disease (CAD). RESEARCH DESIGN AND METHODS: Liraglutide or placebo was administrated to a backbone therapy of metformin in this double-blind, placebo-controlled 12 + 12-week crossover study...
October 19, 2016: Diabetes Care
https://www.readbyqxmd.com/read/27737597/coronary-artery-disease-prevalence-and-outcome-in-patients-hospitalized-with-acute-heart-failure-an-observational-report-from-seven-middle-eastern-countries
#4
Amar Salam, Kadhim Sulaiman, Ibrahim Al-Zakwani, Alawi Alsheikh-Ali, Mohammed Aljaraallah, Husam Al Faleh, Abdelfatah Elasfar, Prasanth Panduranga, Rajvir Singh, Charbel Abi Khalil, Jassim Al Suwaidi
OBJECTIVES: The purpose of this study was to report prevalence, clinical characteristics, precipitating factors, management and outcome of patients with coronary artery disease (CAD) among patients hospitalized with heart failure (HF) in seven Middle Eastern countries and compare them to non-CAD patients. METHODS: Data were derived from Gulf CARE (Gulf aCute heArt failuRe rEgistry), a prospective multicenter study of 5005 consecutive patients hospitalized with acute HF during February-November 2012 in 7 Middle Eastern countries...
October 13, 2016: Hospital Practice (Minneapolis)
https://www.readbyqxmd.com/read/27693051/high-density-lipoprotein-subclass-profile-and-mortality-in-patients-with-coronary-artery-disease-results-from-the-genes-study
#5
Meyer Elbaz, Julien Faccini, Vanina Bongard, Cécile Ingueneau, Dorotea Taraszkiewicz, Bertrand Perret, Jean Ferrières, Jean-Bernard Ruidavets, Cécile Vindis
BACKGROUND: High-density lipoproteins (HDLs) are highly heterogeneous particles, and the specific contribution of each subclass to the prediction of clinical outcome in coronary artery disease (CAD) remains controversial. OBJECTIVE: To examine the relationship between HDL subclass profile and mortality in patients with CAD, using a new and rapid electrophoretic quantitative method for the assessment of HDL particle size phenotype. METHODS: We investigated 403 patients with CAD admitted for cardiovascular examination in the context of evaluation and management of CAD...
November 2016: Archives of Cardiovascular Diseases
https://www.readbyqxmd.com/read/27573599/predictors-of-significant-coronary-artery-disease-in-atrial-fibrillation-are-cardiac-troponins-a-useful-measure
#6
Alaa Alghamry, Joseph Hanna, Anita Pelecanos, Stephen Kyranis, Vinod Khelgi, Peter O'Rourke, Oran Carroll, Cassie Oxenford, Swetha Rangaswamaiah, Christopher Tan
BACKGROUND: Cardiac Troponin I (cTnI) is frequently measured in patients presenting with symptomatic atrial fibrillation (AF). The significance of elevated cTnI levels in this patient cohort is unclear. We investigated the value of cTnI elevation in this setting and whether it is predictive for significant coronary artery disease (sCAD). METHODS: We conducted a retrospective, single-center, case-control study of 231 patients who presented with symptomatic AF to The Prince Charles Hospital emergency department, Brisbane, Australia between 2006 and 2014...
November 15, 2016: International Journal of Cardiology
https://www.readbyqxmd.com/read/27556384/is-heart-rate-variability-a-feasible-method-to-determine-anaerobic-threshold-in-progressive-resistance-exercise-in-coronary-artery-disease
#7
Milena P R Sperling, Rodrigo P Simões, Flávia C R Caruso, Renata G Mendes, Ross Arena, Audrey Borghi-Silva
BACKGROUND: Recent studies have shown that the magnitude of the metabolic and autonomic responses during progressive resistance exercise (PRE) is associated with the determination of the anaerobic threshold (AT). AT is an important parameter to determine intensity in dynamic exercise. OBJECTIVES: To investigate the metabolic and cardiac autonomic responses during dynamic resistance exercise in patients with Coronary Artery Disease (CAD). METHOD: Twenty men (age = 63±7 years) with CAD [Left Ventricular Ejection Fraction (LVEF) = 60±10%] underwent a PRE protocol on a leg press until maximal exertion...
July 2016: Brazilian Journal of Physical Therapy
https://www.readbyqxmd.com/read/27553421/serum-levels-of-mitochondrial-inhibitory-factor-1-are-independently-associated-with-long-term-prognosis-in-coronary-artery-disease-the-genes-study
#8
Annelise Genoux, Laeticia Lichtenstein, Jean Ferrières, Thibaut Duparc, Vanina Bongard, Paul-Louis Vervueren, Guillaume Combes, Dorota Taraszkiewicz, Meyer Elbaz, Michel Galinier, Bertrand Nassar, Jean-Bernard Ruidavets, Bertrand Perret, Laurent O Martinez
BACKGROUND: Epidemiological and observational studies have established that high-density lipoprotein cholesterol (HDL-C) is an independent negative cardiovascular risk factor. However, simple measurement of HDL-C levels is no longer sufficient for cardiovascular risk assessment. Therefore, there is a critical need for novel non-invasive biomarkers that would display prognostic superiority over HDL-C. Cell surface ecto-F1-ATPase contributes to several athero-protective properties of HDL, including reverse cholesterol transport and vascular endothelial protection...
August 23, 2016: BMC Medicine
https://www.readbyqxmd.com/read/27473217/diagnosis-and-risk-stratification-of-women-with-stable-ischemic-heart-disease
#9
Ijeoma Isiadinso, Leslee J Shaw
Although mortality rates for cardiovascular disease are on the decline, it remains the leading cause of death among men and women in the United States. Until recently, more women died of heart disease every year than men. Significant effort has been focused on increasing the awareness of cardiovascular disease among women, but ethnic disparities in awareness still exist. Early symptom recognition, risk assessment, and diagnosis of CAD are paramount in reducing cardiovascular morbidity and mortality in women...
October 2016: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
https://www.readbyqxmd.com/read/27437886/atherosclerotic-burden-and-heart-failure-after-myocardial-infarction
#10
Yariv Gerber, Susan A Weston, Maurice Enriquez-Sarano, Sheila M Manemann, Alanna M Chamberlain, Ruoxiang Jiang, Véronique L Roger
IMPORTANCE: Whether the extent of coronary artery disease (CAD) is associated with the occurrence of heart failure (HF) after myocardial infarction (MI) is not known. Furthermore, whether this association might differ by HF type according to preserved or reduced ejection fraction (EF) has yet to be determined. OBJECTIVES: To evaluate in a community cohort of patients with incident (first-ever) MI the association of angiographic CAD with subsequent HF and to examine the prognostic role of CAD according to HF subtypes: HF with reduced EF and HF with preserved EF...
May 1, 2016: JAMA Cardiology
https://www.readbyqxmd.com/read/27372615/evaluation-of-heart-rate-variability-in-patients-with-coronary-artery-ectasia-and-coronary-artery-disease
#11
Bekir Serhat Yıldız, Emel Özkan, Fatma Esin, Hayrettin Özkan, Yusuf İzzettin Alihanoğlu, İsmail Doğu Kılıç, Harun Evrengül, Havane Asuman Kaftan
OBJECTIVE: The present study compared heart rate variability (HRV) parameters in patients with coronary artery ectasia (CAE) and coronary artery disease (CAD). METHODS: The study population consisted of 60 consecutive patients with CAE (14 women; mean age 51.63±7.44 years), 60 consecutive patients with CA (15 women; mean age 53.67±9.31 years), and 59 healthy individuals (13 women; mean age 52.85±8.19 years). Electrocardiograms, 24-hour Holter analyses, and routine biochemical tests were performed, and clinical characteristics were evaluated...
June 2016: Türk Kardiyoloji Derneği Arşivi: Türk Kardiyoloji Derneğinin Yayın Organıdır
https://www.readbyqxmd.com/read/27333483/is-heart-rate-variability-a-feasible-method-to-determine-anaerobic-threshold-in-progressive-resistance-exercise-in-coronary-artery-disease
#12
Milena P R Sperling, Rodrigo P Simões, Flávia C R Caruso, Renata G Mendes, Ross Arena, Audrey Borghi-Silva
BACKGROUND: Recent studies have shown that the magnitude of the metabolic and autonomic responses during progressive resistance exercise (PRE) is associated with the determination of the anaerobic threshold (AT). AT is an important parameter to determine intensity in dynamic exercise. OBJECTIVES: To investigate the metabolic and cardiac autonomic responses during dynamic resistance exercise in patients with Coronary Artery Disease (CAD). METHOD: Twenty men (age = 63±7 years) with CAD [Left Ventricular Ejection Fraction (LVEF) = 60±10%] underwent a PRE protocol on a leg press until maximal exertion...
June 16, 2016: Brazilian Journal of Physical Therapy
https://www.readbyqxmd.com/read/27229521/the-association-of-type-d-personality-with-heart-rate-variability-and-lipid-profiles-among-patients-with-coronary-artery-disease
#13
I-Mei Lin, San-Yu Wang, I-Hua Chu, Ye-Hsu Lu, Chee-Siong Lee, Tsung-Hsien Lin, Sheng-Yu Fan
PURPOSE: Characteristics of the distressed (Type D) personality include negative affectivity (NA) and social inhibition (SI), which are associated with an increased risk of major adverse cardiac events and mortality among patients with coronary artery disease (CAD). The aims of this study were to examine: (1) the correlation of NA and SI with psychological characteristics, heart rate variability (HRV) indices, and lipids profiles and (2) the differences in psychological characteristics, HRV indices, and lipid profiles between patients with CAD with Type D personality and those with non-Type D personality...
May 26, 2016: International Journal of Behavioral Medicine
https://www.readbyqxmd.com/read/27226153/heart-rate-reduction-in-coronary-artery-disease-and-heart-failure
#14
REVIEW
Roberto Ferrari, Kim Fox
Elevated heart rate is known to induce myocardial ischaemia in patients with coronary artery disease (CAD), and heart rate reduction is a recognized strategy to prevent ischaemic episodes. In addition, clinical evidence shows that slowing the heart rate reduces the symptoms of angina by improving microcirculation and coronary flow. Elevated heart rate is an established risk factor for cardiovascular events in patients with CAD and in those with chronic heart failure (HF). Accordingly, reducing heart rate improves prognosis in patients with HF, as demonstrated in SHIFT...
August 2016: Nature Reviews. Cardiology
https://www.readbyqxmd.com/read/27188395/noninvasive-predictors-of-malignant-arrhythmias
#15
Elena Z Golukhova, Olga Gromova, Marina Grigoryan, Vadim Merzlyakov, Konstantin Shumkov, Leo Bockeria, Victor L Serebruany
BACKGROUND: Prediction and potential prevention of sudden cardiac death (SCD) due to malignant ventricular arrhythmia (MVA) represent an obvious unmet medical need. We estimated the prognostic relevance of numerous biomarkers associated with future MVA development in patients with coronary artery disease (CAD) over 2 years of follow-up. METHODS: Patients with stable documented CAD (n = 97) with a mean age of 61 ± 10 years were prospectively enrolled in a single-center observational cohort study...
2016: Cardiology
https://www.readbyqxmd.com/read/27126923/comparison-of-heart-rate-variability-and-classic-autonomic-testing-for-detection-of-cardiac-autonomic-dysfunction-in-patients-with-fibromyalgia
#16
Kyung-Eun Lee, Sung-Eun Choi, Ji-Hyoun Kang, Yi-Rang Yim, Ji-Eun Kim, Jeong-Won Lee, Lihui Wen, Dong-Jin Park, Tae-Jong Kim, Yong-Wook Park, Shin-Seok Lee
AIM: Cardiac autonomic dysfunction (CAD) is frequently found in patients with fibromyalgia (FM). Thus, we evaluated whether heart rate variability (HRV) is superior to the Ewing tests in detecting CAD in FM patients. METHODS: We studied 35 females with FM and 25 age-matched healthy females. In Ewing tests, results were added to yield an overall score. An abnormal result on deep breathing, the Valsalva maneuver, or orthostatic standing was counted as 1 point. A change in systolic blood pressure (SBP) of > 10 mmHg while standing counted as 1 point, and a change of > 20 mmHg as 2 points...
April 29, 2016: International Journal of Rheumatic Diseases
https://www.readbyqxmd.com/read/27122887/the-relationship-between-expressive-suppressive-hostility-behavior-and-cardiac-autonomic-activations-in-patients-with-coronary-artery-disease
#17
I-Mei Lin, Chia-Ying Weng, Tin-Kwang Lin, Chin-Lon Lin
BACKGROUND: Hostility is an important psychosocial risk factor in coronary artery disease (CAD). Expressive and suppressive hostility behaviors are related to cardiovascular response in healthy adults. However, the relationships of these behavioral dimensions to cardiac autonomic activations in CAD remain unclear. METHOD: This study involved 76 patients with CAD to whom a hostility inventory was administered, who were instructed to recall a neutral event and an anger-related event...
July 2015: Acta Cardiologica Sinica
https://www.readbyqxmd.com/read/26701182/additive-value-of-heart-rate-variability-in-predicting-obstructive-coronary-artery-disease-beyond-framingham-risk
#18
Hsin-Ru Li, Tse-Min Lu, Hao-Min Cheng, Dai-Yin Lu, Chuen-Wang Chiou, Shao-Yuan Chuang, Albert C Yang, Shih-Hsien Sung, Wen-Chung Yu, Chen-Huan Chen
BACKGROUND: Heart rate variability (HRV) is usually reduced in patients with CAD. We therefore investigated whether reduced HRV is predictive of angiographic CAD beyond Framingham risk in patients with stable angina. METHODS AND RESULTS: A total of 514 patients (age, 66.1 ± 14.3 years, 358 men) were enrolled. Holter ECG was performed before catheterization, and 24-h HRV was analyzed in both the frequency domain (VLF, LF, HF and total power) and the time domain (SDNN, SDANN, RMSSD and pNN20)...
2016: Circulation Journal: Official Journal of the Japanese Circulation Society
https://www.readbyqxmd.com/read/26647745/interval-training-based-on-ventilatory-anaerobic-threshold-increases-cardiac-vagal-modulation-and-decreases-high-sensitivity-c-reative-protein-randomized-clinical-trial-in-coronary-artery-disease
#19
Nayara Y Tamburus, Roberta F L Paula, Vandeni C Kunz, Marcelo C César, Marlene A Moreno, Ester da Silva
BACKGROUND: Autonomic dysfunction and inflammatory activity are involved in the development and progression of coronary artery disease (CAD), and exercise training has been shown to confer a cardiovascular benefit. OBJECTIVE: To evaluate the effects that interval training (IT) based on ventilatory anaerobic threshold (VAT) has on heart rate variability (HRV) and high-sensitivity C-reactive protein (hs-CRP) levels, as well as the relationship between both levels, in patients with CAD and/or cardiovascular risk factors (RF)...
November 2015: Brazilian Journal of Physical Therapy
https://www.readbyqxmd.com/read/26610403/which-is-responsible-for-cardiac-autonomic-dysfunction-in-non-diabetic-patients-with-metabolic-syndrome-prediabetes-or-the-syndrome-itself
#20
Akif Serhat Balcioğlu, Sinan Akinci, Davran Çiçek, Halil Olcay Eldem, Ali Çoner, Uğur Abbas Bal, Haldun Müderrisoğlu
AIMS: Cardiac autonomic dysfunction (CAD) is associated with both prediabetes and metabolic syndrome (MS). Heart rate variability (HRV) and heart rate turbulence (HRT) are reliable 24-h Holter-ECG findings of cardiac autonomic function. This study aimed to investigate the relation between MS and its components and CAD using HRV and HRT. MATERIALS AND METHODS: The study included 80 non-diabetic patients with MS and 70 control subjects. All study population and the patients with MS were further analyzed for each diagnostic component of MS to investigate which criteria impaired HRV and HRT...
January 2016: Diabetes & Metabolic Syndrome
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