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https://www.readbyqxmd.com/read/29451501/transitions-in-physiological-coupling-between-heartbeat-and-pulse-across-sleep-stages
#1
Qianli D Y Ma, Changjuan Ji, Huanhuan Xie, Kai Yin, Zhen Ma, Chunhua Bian
The aim of this study is to investigate the coupling behavior between heartbeat and pulse of blood flow at different sleep stages, and to explore the feasibility of using this coupling strength for automatic sleep staging.
 Approach: The electrocardiogram (ECG) and photoplethysmography (PPG) signals are recorded during sleep, and R-wave-to-R-wave intervals (RRI) and Pulse-to-Pulse intervals (PPI) are extracted respectively. The detrended cross-correlation analysis (DCCA) is applied to quantify long-range cross correlations between the RRIs and PPIs across sleep stages...
February 16, 2018: Physiological Measurement
https://www.readbyqxmd.com/read/29450734/two-hour-post-challenge-glucose-is-a-better-predictor-of-adverse-outcome-after-myocardial-infarction-than-fasting-or-admission-glucose-in-patients-without-diabetes
#2
Sudipta Chattopadhyay, Anish George, Joseph John, Thozukat Sathyapalan
AIMS: We evaluate prevalence of new abnormal glucose tolerance (AGT) in post-MI survivors without known diabetes (DM) if guidelines are followed and compare the ability of admission (APG), fasting (FPG) and 2-h post-load plasma glucose (2h-PG) to predict prognosis. METHODS: A total of 674 patients were followed up for 4 years for incidence of major adverse cardiovascular events (MACE) of cardiovascular death, non-fatal re-infarction or non-haemorrhagic stroke. Ability of models including APG, FPG and 2h-PG to predict MACE was compared...
February 15, 2018: Acta Diabetologica
https://www.readbyqxmd.com/read/29446712/measures-of-sympathetic-and-parasympathetic-autonomic-outflow-from-heartbeat-dynamics
#3
Gaetano Valenza, Luca Citi, J Phillip Saul, Riccardo Barbieri
Reliable and effective non-invasive measures of sympathetic and parasympathetic peripheral outflow are of crucial importance in cardiovascular physiology. Although many techniques have been proposed to take up this long-lasting challenge, none has proposed a satisfying discrimination of the dynamics of the two separate branches. Spectral analysis of heart rate variability is the most currently used technique for such assessment. Despite its widespread use, it has been demonstrated that the subdivision in the low frequency (LF) and high frequency (HF) bands does not fully reflect separate influences of the sympathetic and parasympathetic branches, respectively, mainly due to their simultaneous action in the LF...
February 15, 2018: Journal of Applied Physiology
https://www.readbyqxmd.com/read/29444987/cardiovascular-risk-prediction-functions-underestimate-risk-in-hiv-infection
#4
Virginia A Triant, Jeremiah Perez, Susan Regan, Joseph M Massaro, James B Meigs, Steven K Grinspoon, Ralph B D'Agostino
Background -Cardiovascular disease (CVD) risk is elevated in HIV-infected individuals, with contributions from both traditional and non-traditional risk factors. The accuracy of established CVD risk prediction functions in HIV is uncertain. We sought to assess the performance of three established CVD risk prediction functions in a longitudinal cohort of HIV-infected men. Methods -Framingham Heart Study (Framingham) functions for hard coronary heart disease (Framingham CHD) and atherosclerotic CVD (Framingham ASCVD) and the American College of Cardiology/American Heart Association (ACC/AHA ASCVD) function were applied to the Partners HIV cohort...
February 14, 2018: Circulation
https://www.readbyqxmd.com/read/29444926/high-sensitivity-cardiac-troponin-i-and-the-diagnosis-of-coronary-artery-disease-in-patients-with-suspected-angina-pectoris
#5
Philip D Adamson, Amanda Hunter, Debbie M Madsen, Anoop S V Shah, David A McAllister, Tania A Pawade, Michelle C Williams, Colin Berry, Nicholas A Boon, Marcus Flather, John Forbes, Scott McLean, Giles Roditi, Adam D Timmis, Edwin J R van Beek, Marc R Dweck, Hans Mickley, Nicholas L Mills, David E Newby
BACKGROUND: We determined whether high-sensitivity cardiac troponin I can improve the estimation of the pretest probability for obstructive coronary artery disease (CAD) in patients with suspected stable angina. METHODS AND RESULTS: In a prespecified substudy of the SCOT-HEART trial (Scottish Computed Tomography of the Heart), plasma cardiac troponin was measured using a high-sensitivity single-molecule counting assay in 943 adults with suspected stable angina who had undergone coronary computed tomographic angiography...
February 2018: Circulation. Cardiovascular Quality and Outcomes
https://www.readbyqxmd.com/read/29442456/an-inverse-relationship-between-plasma-glutathione-concentration-and-fasting-glycemia-in-patients-with-coronary-artery-disease-and-concomitant-type-2-diabetes-a-pilot-study
#6
Kamil Karolczak, Paweł Kubalczyk, Rafał Głowacki, Robert Pietruszyński, Cezary Watała
BACKGROUND: There have been occasional reports indicating that plasma concentrations of reduced glutathione (GSH) may be associated in some way with blood glucose. This relationship, however, has not hitherto been explored in the blood plasma of patients with coronary artery disease (CAD). OBJECTIVES: The aim of this study was to evaluate potential associations of fasting glycemia and peripheral blood plasma GSH concentrations in CAD-free and CAD-affected subjects...
December 2017: Advances in Clinical and Experimental Medicine: Official Organ Wroclaw Medical University
https://www.readbyqxmd.com/read/29441875/influence-of-slco1b1-polymorphisms-on-atorvastatin-efficacy-and-safety-in-macedonian-subjects
#7
K Mladenovska, A Daka Grapci, M Vavlukis, A Kapedanovska, A Eftimov, N Matevska Geshkovska, D Nebija, A J Dimovski
Atorvastatin, as 3-hydroxy-3-methylglutaryl coenzyme A (HMG-CoA) reductase inhibitor, is a widely prescribed medication for the treatment of dyslipidemia. However, despite its clinical efficacy in reducing major cardiovascular events, a wide inter-individual variability in its response exists. Several studies in this area point to the effect of polymorphisms in the solute carrier organic anion transporter 1B1 (SLCO1B1) gene encoding the multiple organic anion-transporting polypeptide 1B1 (OATP1B1) involved in hepatic uptake of atorvastatin...
May 1, 2017: Die Pharmazie
https://www.readbyqxmd.com/read/29440878/functionality-and-outcome-in-older-patients-with-severe-aortic-stenosis-foopas-an-interdisciplinary-study-concept-for-a-prospective-trial
#8
Ferdinand Vogt, Susanne Wicklein, Markus Gosch, Jürgen Jessl, Wolfgang Hitzl, Theodor Fischlein, Matthias Pauschinger, Steffen Pfeiffer, Dennis Eckner
Background: Frailty is a geriatric syndrome that can influence mortality and functional recovery after treatment of severe aortic stenosis (AS). The integration of standardized geriatric assessment (GA) in clinical practice is limited by a lack of consensus on how to measure it. Objectives: This study aims to compare the incremental predictive value of different frailty scales to predict the outcomes following surgical aortic valve replacement, transcatheter aortic valve implantation, and conservative treatment of severe AS...
2018: Clinical Interventions in Aging
https://www.readbyqxmd.com/read/29435121/lipidomics-reveals-altered-biosynthetic-pathways-of-glycerophospholipids-and-cell-signaling-as-biomarkers-of-the-polycystic-ovary-syndrome
#9
Mariona Jové, Irene Pradas, Alba Naudí, Susana Rovira-Llopis, Celia Bañuls, Milagros Rocha, Manuel Portero-Otin, Antonio Hernández-Mijares, Victor M Victor, Reinald Pamplona
Purpose: In this work, a non-targeted approach was used to unravel changes in the plasma lipidome of PCOS patients. The aim is to offer new insights in PCOS patients strictly selected in order to avoid confounding factors such as dyslipemia, obesity, altered glucose/insulin metabolism, cardiovascular disease, or cancer. Results: Multivariate statistics revealed a specific lipidomic signature for PCOS patients without associated pathologies. This signature implies changes, mainly by down-regulation, in glycerolipid, glycerophospholipid and sphingolipid metabolism suggesting an altered biosynthetic pathway of glycerophospholipids and cell signaling as second messengers in women with PCOS...
January 12, 2018: Oncotarget
https://www.readbyqxmd.com/read/29434357/risk-stratification-based-on-components-of-the-complete-blood-count-in-patients-with-acute-coronary-syndrome-a-classification-and-regression-tree-analysis
#10
Xiaowei Niu, Guoyong Liu, Lichao Huo, Jingjing Zhang, Ming Bai, Yu Peng, Zheng Zhang
To develop a risk stratification model based on complete blood count (CBC) components in patients with acute coronary syndrome (ACS) using a classification and regression tree (CART) method. CBC variables and the Global Registry of Acute Coronary Events (GRACE) scores were determined in 2,693 patients with ACS. The CART analysis was performed to classify patients into different homogeneous risk groups and to determine predictors for major adverse cardiovascular events (MACEs) at 1-year follow-up. The CART algorithm identified the white blood cell count, hemoglobin, and mean platelet volume levels as the best combination to predict MACE risk...
February 12, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29432935/uric-acid-is-associated-with-long-term-adverse-cardiovascular-outcomes-in-patients-with-acute-coronary-syndrome-undergoing-percutaneous-coronary-intervention
#11
Maximilian Tscharre, Robert Herman, Miklos Rohla, Christina Hauser, Serdar Farhan, Matthias K Freynhofer, Kurt Huber, Thomas W Weiss
BACKGROUND AND AIMS: Evidence links uric acid (UA) with the promotion of cardiovascular disease. We assessed the prognostic value of UA on long-term major adverse outcomes (MACE) in patients with acute coronary syndrome (ACS), undergoing percutaneous coronary intervention (PCI). METHODS: As primary endpoint, we assessed the association of UA (continuous and dichotomized) with MACE, including cardiovascular death, myocardial infarction (MI) and stroke, using Cox regression and propensity matching...
February 9, 2018: Atherosclerosis
https://www.readbyqxmd.com/read/29430577/phenotypic-and-metabolic-dichotomy-in-obesity-clinical-biochemical-and-immunological-correlates-of-metabolically-divergent-obese-phenotypes-in-healthy-south-asian-adults
#12
Khadija Irfan Khawaja, Saqib Ali Mian, Aziz Fatima, Ghulam Murtaza Tahir, Fehmida Farrukh Khan, Saira Burney, Ali Hasan, Faisal Masud
INTRODUCTION: Metabolic heterogeneity among obese individuals is thought to translate into variation in cardiovascular risk. Identifying obese people with an unfavourable metabolic profile may allow targeting preventive strategies towards those at greatest risk. This study aimed to identify clinical, biochemical and immunological differences between insulin sensitive and resistant obese subgroups, to understand the population-specific pathophysiological basis of the adverse cardiovascular risk profile in the latter group...
February 12, 2018: Singapore Medical Journal
https://www.readbyqxmd.com/read/29429407/non-invasive-differentiation-of-idiopathic-inflammatory-myopathy-with-cardiac-involvement-from-acute-viral-myocarditis-using-cardiovascular-magnetic-resonance-imaging-t1-and-t2-mapping
#13
Adrian T Huber, Marine Bravetti, Jérôme Lamy, Tania Bacoyannis, Charles Roux, Alain de Cesare, Aude Rigolet, Olivier Benveniste, Yves Allenbach, Mathieu Kerneis, Philippe Cluzel, Nadjia Kachenoura, Alban Redheuil
BACKGROUND: Idiopathic inflammatory myopathy (IIM) is a group of autoimmune diseases with systemic myositis which may involve the myocardium. Cardiac involvement in IIM, although often subclinical, may mimic clinical manifestations of acute viral myocarditis (AVM). Our aim was to investigate the usefulness of the combined analysis of cardiovascular magnetic resonance (CMR) T1 and T2 mapping parameters measured both in the myocardium and in the thoracic skeletal muscles to differentiate AVM from IIM cardiac involvement...
February 12, 2018: Journal of Cardiovascular Magnetic Resonance
https://www.readbyqxmd.com/read/29427252/comparison-of-measures-of-adiposity-and-cardiovascular-disease-risk-factors-among-african-american-adults-the-jackson-heart-study
#14
Ronny A Bell, Haiying Chen, Santiago Saldana, Alain G Bertoni, Valery S Effoe, Kristen G Hairston, Rita R Kalyani, Arnita F Norwood
Obesity, particularly central adiposity, is a well-established risk factor for cardiovascular disease (CVD). Waist circumference (WC) is measured in numerous epidemiologic studies as a relatively simple indicator of central adiposity. However, recently, investigators have considered a measure that takes height into consideration, waist-to-height ratio (WHtR) as a more sensitive predictor of CVD. A limited number of studies have examined the association between various measures of central adiposity and obesity with CVD, but there is a dearth of information on this topic focused specifically on African American adults...
February 9, 2018: Journal of Racial and Ethnic Health Disparities
https://www.readbyqxmd.com/read/29427170/exploration-into-uric-and-cardiovascular-disease-uric-acid-right-for-heart-health-urrah-project-a-study-protocol-for-a-retrospective-observational-study
#15
Giovambattista Desideri, Agostino Virdis, Edoardo Casiglia, Claudio Borghi
The relevance of cardiovascular role played by levels of serum uric acid is dramatically growing, especially as cardiovascular risk factor potentially able to exert either a direct deleterious impact or a synergic effect with other cardiovascular risk factors. At the present time, it still remains undefined the threshold level of serum uric acid able to contribute to the cardiovascular risk. Indeed, the available epidemiological case studies are not homogeneous, and some preliminary data suggest that the so-called "cardiovascular threshold limit" may substantially differ from that identified as a cut-off able to trigger the acute gout attack...
February 9, 2018: High Blood Pressure & Cardiovascular Prevention: the Official Journal of the Italian Society of Hypertension
https://www.readbyqxmd.com/read/29426834/value-of-circulating-cytokine-profiling-during-submaximal-exercise-testing-in-myalgic-encephalomyelitis-chronic-fatigue-syndrome
#16
Kegan J Moneghetti, Mehdi Skhiri, Kévin Contrepois, Yukari Kobayashi, Holden Maecker, Mark Davis, Michael Snyder, Francois Haddad, Jose G Montoya
Myalgic Encephalomyelitis or Chronic Fatigue Syndrome (ME/CFS) is a heterogeneous syndrome in which patients often experience severe fatigue and malaise following exertion. Immune and cardiovascular dysfunction have been postulated to play a role in the pathophysiology. We therefore, examined whether cytokine profiling or cardiovascular testing following exercise would differentiate patients with ME/CFS. Twenty-four ME/CFS patients were matched to 24 sedentary controls and underwent cardiovascular and circulating immune profiling...
February 9, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29424480/predicting-new-onset-hf-in-patients-undergoing-coronary-or-peripheral-angiography-results-from-the-catheter-sampled-blood-archive-in-cardiovascular-diseases-casablanca-study
#17
Nasrien E Ibrahim, Asya Lyass, Hanna K Gaggin, Yuyin Liu, Roland R J van Kimmenade, Shweta R Motiwala, Noreen P Kelly, Parul U Gandhi, Mandy L Simon, Arianna M Belcher, Jamie E Harisiades, Joseph M Massaro, Ralph B D'Agostino, James L Januzzi
AIMS: Methods to identify patients at risk for incident HF would be welcome as such patients might benefit from earlier interventions. METHODS AND RESULTS: From a registry of 1251 patients referred for coronary and/or peripheral angiography, we sought to identify independent predictors of incident HF during follow-up and develop a clinical and biomarker strategy to predict this outcome. There were 991 patients free of prevalent HF at baseline. Cox proportional hazard models were developed to predict adjudicated diagnosis of incident HF...
February 9, 2018: ESC Heart Failure
https://www.readbyqxmd.com/read/29410187/development-of-a-risk-prediction-model-and-clinical-risk-score-for-isolated-tricuspid-valve-surgery
#18
Damien J LaPar, Donald S Likosky, Min Zhang, Patty Theurer, C Edwin Fonner, John A Kern, Stephen F Bolling, Daniel H Drake, Alan M Speir, Jeffrey B Rich, Irving L Kron, Richard L Prager, Gorav Ailawadi
BACKGROUND: While tricuspid valve (TV) operations remain associated with high mortality (∼8-10%), no robust prediction models exist to support clinical decision-making. We developed a preoperative clinical risk model with an easily calculable clinical risk score (CRS) to predict mortality and major morbidity after isolated TV surgery. METHODS: Multi-state Society of Thoracic Surgeons database records were evaluated for 2,050 isolated TV repair and replacement operations for any etiology performed at 50 hospitals (2002-2014)...
February 1, 2018: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/29407598/hyperuricemia-as-a-prognostic-factor-after-acute-coronary-syndrome
#19
Adriana Lopez-Pineda, Alberto Cordero, Concepción Carratala-Munuera, Domingo Orozco-Beltran, Jose A Quesada, Vicente Bertomeu-Gonzalez, Vicente F Gil-Guillen, Vicente Bertomeu-Martinez
BACKGROUND AND AIMS: Many studies have reported the independent association between uric acid and cardiovascular disease, its role as a risk predictor for outcomes in people with acute coronary syndrome remains controversial. This study aims to assess the association between hyperuricemia and medium/long-term clinical outcomes in people with acute coronary syndrome and determine whether adding hyperuricemia to the GRACE score improves its predictive capability. METHODS: This cohort study included patients admitted for acute coronary syndrome between 2008 and 2013...
January 17, 2018: Atherosclerosis
https://www.readbyqxmd.com/read/29398513/determinants-of-left-ventricular-diastolic-dysfunction-in-hypertensive-patients
#20
R Nazário Leão, P Marques da Silva, R Marques Pocinho, M Alves, D Virella, R Palma Dos Reis
INTRODUCTION: The progression of hypertensive heart disease leads to the left ventricular diastolic dysfunction (LVDD), which is associated with increased cardiovascular morbidity and mortality. The purpose of this analysis is to explore the determinants for LVDD in patients with hypertension. METHODS: This is a secondary analysis of data of Impedance Cardiography in the Evaluation of Left Ventricular Diastolic Dysfunction in Patients with Arterial Hypertension (IMPEDDANS) Study...
February 2, 2018: Hipertensión y Riesgo Vascular
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