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https://www.readbyqxmd.com/read/27921196/danshen-injection-as-adjuvant-treatment-for-unstable-angina-pectoris-a-systematic-review-and-meta-analysis
#1
Jia-Rui Wu, Shi Liu, Xiao-Meng Zhang, Bing Zhang
OBJECTIVE: To systematically evaluate the clinical effectiveness and safety of Danshen Injection (, DS) as one adjuvant treatment for conventional therapy with Western medicine (WM) for unstable angina pectoris (UAP). METHODS: Using literature databases, a thorough and systematic retrieval of randomized controlled trials (RCTs) comparing DS plus WM with WM was conducted from inception to April 2015. The extracted data from included studies was analyzed by Review Manager 5...
December 5, 2016: Chinese Journal of Integrative Medicine
https://www.readbyqxmd.com/read/27858506/causes-of-prehospital-misinterpretations-of-st-elevation-myocardial-infarction
#2
Nichole Bosson, Stephen Sanko, Ronald E Stickney, James Niemann, William J French, James G Jollis, Michael C Kontos, Tyson G Taylor, Peter W Macfarlane, Richard Tadeo, William Koenig, Marc Eckstein
OBJECTIVES: To determine the causes of software misinterpretation of ST elevation myocardial infarction (STEMI) compared to clinically identified STEMI to identify opportunities to improve prehospital STEMI identification. METHODS: We compared ECGs acquired from July 2011 through June 2012 using the LIFEPAK 15 on adult patients transported by the Los Angeles Fire Department. Cases included patients ≥18 years who received a prehospital ECG. Software interpretation of the ECG (STEMI or not) was compared with data in the regional EMS registry to classify the interpretation as true positive (TP), true negative (TN), false positive (FP), or false negative (FN)...
November 18, 2016: Prehospital Emergency Care
https://www.readbyqxmd.com/read/27834661/an-extended-bayesian-framework-for-atrial-and-ventricular-activity-separation-in-atrial-fibrillation
#3
Ebadollah Kheirati Roonizi, Roberto Sassi
An extended nonlinear Bayesian filtering framework is introduced for the analysis of Atrial Fibrillation (AF), in particular with single channel electrocardiographical (ECG) recordings. It is suitable for simultaneously tracking the fundamental frequency of atrial fibrillatory waves (f-waves), and separating signals, linked to atrial and ventricular activity, during AF. In this framework, high-power ECG components, i.e. Q, R, S and T waves, are modeled using sum of Gaussian functions. The atrial activity dynamical model is instead based on a trigonometrical function, with a fundamental frequency (the inverse of the dominant atrial cycle length), and its harmonics...
November 4, 2016: IEEE Journal of Biomedical and Health Informatics
https://www.readbyqxmd.com/read/27808527/dissonance-based-eating-disorder-program-reduces-cardiac-risk-a-preliminary-trial
#4
Melinda A Green, Mary Willis, Kristen Fernandez-Kong, Shuhan Reyes, Ruby Linkhart, Molly Johnson, Tyler Thorne, Emily Kroska, Halley Woodward, Jessica Lindberg
Objective: We conducted a randomized, controlled preliminary trial to examine the effect of a dissonance-based eating disorder program on eating disorder symptoms and cardiac risk indices in a community sample of women with subclinical and clinical symptoms (N = 47), examining the efficacy of the program in both the indicated prevention and treatment realms. Method: Eating disorder symptoms, body mass index, and biomarkers of cardiac risk were examined in dissonance and assessment-only control conditions at baseline, postintervention, and 2-month follow-up...
November 3, 2016: Health Psychology: Official Journal of the Division of Health Psychology, American Psychological Association
https://www.readbyqxmd.com/read/27670068/canine-pulmonary-vein-to-pulmonary-artery-ratio-echocardiographic-technique-and-reference-intervals
#5
F Birettoni, D Caivano, V Patata, N S Moïse, C Guglielmini, M Rishniw, F Porciello
OBJECTIVES: The size of the pulmonary veins (PVs) and pulmonary arteries (PAs) changes in response to hemodynamic alterations caused by physiological events and disease. We sought to create standardized echocardiographic methods for imaging the right ostium of the pulmonary veins (RPVs) and the right pulmonary artery (RPA) using specific landmarks and timing to quantify vessel diameters and phasic changes during the cardiac cycle. ANIMALS: Fifty client-owned healthy dogs prospectively recruited...
September 23, 2016: Journal of Veterinary Cardiology: the Official Journal of the European Society of Veterinary Cardiology
https://www.readbyqxmd.com/read/27662187/obesity-and-ecg-left-ventricular-hypertrophy
#6
Maria L Muiesan, Massimo Salvetti, Augusto Di Castelnuovo, Anna Paini, Deodato Assanelli, Simona Costanzo, Fabio Badilini, Martino Vaglio, Maria B Donati, Enrico Agabiti Rosei, Giovanni de Gaetano, Licia Iacoviello
AIM: Our aim was to investigate the prevalence and the prognostic significance for fatal and nonfatal cerebrovascular and cardiovascular events of different ECG criteria for left ventricular hypertrophy (LVH) in normal weight, overweight and obese patients in an adult Italian population. METHODS: A total of 18 330 adults (mean age 54 ± 11 years, 55% women, 53% hypertensive patients) were analyzed from the Moli-sani cohort. Obesity was defined using the ATPIII criteria...
January 2017: Journal of Hypertension
https://www.readbyqxmd.com/read/27621775/noninvasive-model-including-right-ventricular-speckle-tracking-for-the-evaluation-of-pulmonary-hypertension
#7
Yossra Mahran, Robert Schueler, Marcel Weber, Carmen Pizarro, Georg Nickenig, Dirk Skowasch, Christoph Hammerstingl
AIM: To find parameters from transthorathic echocardiography (TTE) including speckle-tracking (ST) analysis of the right ventricle (RV) to identify precapillary pulmonary hypertension (PH). METHODS: Forty-four patients with suspected PH undergoing right heart catheterization (RHC) were consecutively included (mean age 63.1 ± 14 years, 61% male gender). All patients underwent standardized TTE including ST analysis of the RV. Based on the subsequent TTE-derived measurements, the presence of PH was assessed: Left ventricular ejection fraction (LVEF) was calculated by Simpsons rule from 4Ch...
August 26, 2016: World Journal of Cardiology
https://www.readbyqxmd.com/read/27610087/changes-in-myocardial-composition-and-conduction-properties-in-rat-heart-failure-model-induced-by-chronic-volume-overload
#8
David Sedmera, Jan Neckar, Jiri Benes, Jana Pospisilova, Jiri Petrak, Kamil Sedlacek, Vojtech Melenovsky
Volume overload leads to development of eccentric cardiac hypertrophy and heart failure. In our previous report, we have shown myocyte hypertrophy with no fibrosis and decrease in gap junctional coupling via connexin43 in a rat model of aorto-caval fistula at 21 weeks. Here we set to analyze the electrophysiological and protein expression changes in the left ventricle and correlate them with phenotypic severity based upon ventricles to body weight ratio. ECG analysis showed increased amplitude and duration of the P wave, prolongation of PR and QRS interval, ST segment elevation and decreased T wave amplitude in the fistula group...
2016: Frontiers in Physiology
https://www.readbyqxmd.com/read/27601135/relationship-between-abnormal-p-wave-terminal-force-in-lead-v1-and-left-ventricular-diastolic-dysfunction-in-hypertensive-patients-the-life-study
#9
Michael T Tanoue, Sverre E Kjeldsen, Richard B Devereux, Peter M Okin
BACKGROUND: Abnormal P-wave terminal force in lead V1 (PTF-V1) is an ECG marker of increased left atrial (LA) volume, elevated LA filling pressures and/or LA systolic dysfunction. Because left ventricular (LV) diastolic dysfunction is one of the potential mechanisms driving LA remodelling, we hypothesized that PTF-V1 might be an additional ECG marker of diastolic dysfunction. METHODS: LV diastolic function after 3 years' systematic antihypertensive treatment was examined in relation to baseline PTF-V1 in 431 hypertensive patients undergoing protocol-driven blood pressure reduction who had baseline and year-3 ECG and echocardiographic data and a preserved LV ejection fraction (EF >45%) at year-3...
August 9, 2016: Blood Pressure
https://www.readbyqxmd.com/read/27599368/the-role-of-the-ratio-of-j-point-elevation-magnitude-and-r-wave-amplitude-on-the-same-ecg-lead-in-the-risk-stratification-of-subjects-with-early-repolarization-pattern
#10
Xu-Miao Chen, Cheng-Cheng Ji, Yun-Jiu Cheng, Li-Juan Liu, Wei-Qi Zhu, Ying Huang, Wei-Ying Chen, Su-Hua Wu
BACKGROUND: Just as high-risk populations for cardiac arrest exist in patients with Brugada syndrome or long QT syndrome, high-risk and low-risk populations for cardiac arrest also exist in patients with early repolarization pattern (ERP). HYPOTHESIS: Electrocardiographic (ECG) characteristics can aid the risk stratification of patients with ERP. METHODS: Electrocardiographic parameters such as magnitude of J-point elevation and J/R ratio were measured...
September 6, 2016: Clinical Cardiology
https://www.readbyqxmd.com/read/27587134/electrocardiogram-signal-denoising-based-on-a-new-improved-wavelet-thresholding
#11
Guoqiang Han, Zhijun Xu
Good quality electrocardiogram (ECG) is utilized by physicians for the interpretation and identification of physiological and pathological phenomena. In general, ECG signals may mix various noises such as baseline wander, power line interference, and electromagnetic interference in gathering and recording process. As ECG signals are non-stationary physiological signals, wavelet transform is investigated to be an effective tool to discard noises from corrupted signals. A new compromising threshold function called sigmoid function-based thresholding scheme is adopted in processing ECG signals...
August 2016: Review of Scientific Instruments
https://www.readbyqxmd.com/read/27476337/electrocardiographic-abnormalities-predict-adverse-clinical-outcomes-in-patients-with-subarachnoid-hemorrhage
#12
Limin Zhang, Sihua Qi
BACKGROUND: We conducted a retrospective cohort study of a large sample to assess whether electrocardiographic (ECG) abnormalities are independently associated with the occurrence of neurogenic pulmonary edema (NPE), delayed cerebral ischemia (DCI), and in-hospital death after nontraumatic subarachnoid hemorrhage (SAH). METHODS: In this retrospective observational study, patients who were admitted within 72 hours of SAH symptom onset between 2013 and 2015 were enrolled...
July 28, 2016: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
https://www.readbyqxmd.com/read/27457110/junctional-bradycardia-is-a-potential-risk-factor-of-stroke
#13
Gwang Sil Kim, Jae-Sun Uhm, Tae-Hoon Kim, Hancheol Lee, Junbeom Park, Jin-Kyu Park, Boyoung Joung, Hui-Nam Pak, Moon-Hyoung Lee
BACKGROUND: This study aimed to determine the risk of thromboembolic events in patients with junctional bradycardia(JB). METHODS: We retrospectively reviewed electrocardiograms(ECGs) for 380,682 patients. Those with JB on an ECG at least twice over a ≥3-month interval were included for analysis. We additionally included 138 CHADS2 score-matched patients(age, 68.4 ± 15.7 years; male, 52.2%) in sinus rhythm as a control group. Between the JB patients(with or without retrograde P wave) and controls, we compared incidences of ischemic stroke and a composite of ischemic stroke, renal infarction, ischemic colitis, acute limb ischemia, and pulmonary embolism...
2016: BMC Neurology
https://www.readbyqxmd.com/read/27441471/electrocardiographic-abnormalities-and-arrhythmic-risk-markers-in-adult-patients-with-beta-thalassemia-major
#14
Marios Kolios, Panagiotis Korantzopoulos, Antonios P Vlahos, Eleni Kapsali, Evangelos Briasoulis, John A Goudevenos
BACKGROUND: There seems to be a significant arrhythmia burden in β-thalassemia major (TM) patients without overt cardiomyopathy. Apart from conventional electrocardiographic (ECG) and arrhythmic risk markers we studied novel markers of ventricular repolarization and autonomic imbalance both at rest and after exercise testing. METHODS: We studied 47 adult TM patients without systolic heart failure and 47 age and sex-matched healthy control subjects. The median age of the studied population was 36 [32-43] years, 57% men...
October 15, 2016: International Journal of Cardiology
https://www.readbyqxmd.com/read/27422488/interatrial-conduction-time-can-predict-new-onset-atrial-fibrillation-after-radiofrequency-ablation-of-isolated-typical-atrial-flutter
#15
Ryuta Henmi, Koichiro Ejima, Morio Shoda, Daigo Yagishita, Nobuhisa Hagiwara
INTRODUCTION: Many patients with successful atrial flutter (AFL) ablation will develop atrial fibrillation (AF) during follow-up. This study aimed to determine whether prolonged interatrial conduction time (IACT) is associated with risk for new-onset AF after ablation of isolated, typical AFL. METHODS: Participants were 80 consecutive patients who underwent successful radiofrequency ablation of isolated, typical AFL from 2004 to 2012. Patients with any history of AF prior to AFL ablation were excluded...
July 16, 2016: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/27391045/the-associations-between-various-ectopic-visceral-adiposity-and-body-surface-electrocardiographic-alterations-potential-differences-between-local-and-remote-systemic-effects
#16
Po-Ching Chi, Shun-Chuan Chang, Chun-Ho Yun, Jen-Yuan Kuo, Chung-Lieh Hung, Charles Jia-Yin Hou, Chia-Yuan Liu, Fei-Shih Yang, Tung-Hsin Wu, Hiram G Bezerra, Hung-I Yeh
BACKGROUND: The associations between pericardial adiposity and altered atrial conduction had been demonstrated. However, data comparing differential effects of various body sites visceral adiposity on atrial and ventricular electrocardiographic alterations remains largely unknown. METHODS AND RESULTS: We assessed both peri-cardial fat (PCF) and peri-aortic visceral adiposity (TAT) using dedicated computed tomography (CT) software (Aquarius 3D Workstation, TeraRecon, San Mateo, CA, USA), with anthropometrics including body mass index (BMI) and biochemical data obtained...
2016: PloS One
https://www.readbyqxmd.com/read/27381667/electrocardiographic-abnormalities-in-disease-free-black-south-africans-and-correlations-with-echocardiographic-indexes-and-early-repolarization
#17
Graham M Lohrmann, Ferande Peters, Komandoor Srivathsan, Mohammed R Essop, Farouk Mookadam
Electrocardiographic abnormalities, and specifically early repolarization (ER) patterns, are increasingly found to be common variants in healthy populations free of heart disease or risk factors. Data are sparse in subjects of African descent, for which no increase in adverse cardiovascular outcomes have been demonstrated. A database of healthy disease-free adult volunteers of sub-Saharan African descent had 12 lead electrocardiograms (ECGs) and transthoracic echocardiograms performed. Statistical tests were then performed on the data to elicit associations; 396 volunteers (63...
September 1, 2016: American Journal of Cardiology
https://www.readbyqxmd.com/read/27372039/ecg-predictors-of-t-wave-oversensing-in-subcutaneous-implantable-cardioverter-defibrillators
#18
D G Wilson, G Leventigiannis, C Barr, J M Morgan
BACKGROUND: T wave oversensing (TWOS) is the commonest cause of inappropriate shocks in subcutaneous implantable cardioverter defibrillators (S-ICDs). We hypothesise that predictors of TWOS can be derived from surface ECG parameters. METHODS: In a cohort of SICD recipients in two UK centres, all patients who had TWOS (study group) were compared to all those who had not (control group). The pre-implant screen was scanned and the R wave, T wave amplitudes, QRS interval, time to peak T wave, QT interval and R:T ratio was measured using digital callipers...
October 1, 2016: International Journal of Cardiology
https://www.readbyqxmd.com/read/27300573/a-novel-and-practical-screening-tool-for-the-detection-of-silent-myocardial-infarction-in-patients-with-type-2-diabetes
#19
Peter P Swoboda, Adam K McDiarmid, Bara Erhayiem, Philip Haaf, Ananth Kidambi, Graham J Fent, Laura E Dobson, Tarique A Musa, Pankaj Garg, Graham R Law, Mark T Kearney, Julian H Barth, Ramzi Ajjan, John P Greenwood, Sven Plein
OBJECTIVE: Silent myocardial infarction (MI) is a prevalent finding in patients with type 2 diabetes and is associated with significant mortality and morbidity. Late gadolinium enhancement (LGE) by cardiovascular magnetic resonance (CMR) is the most validated technique for detection of silent MI, but is time-consuming, costly, and requires administration of intravenous contrast. We therefore planned to develop a simple and low-cost population screening tool to identify those at highest risk of silent MI validated against the CMR reference standard...
September 2016: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/27289293/usefulness-of-electrocardiographic-patterns-at-presentation-to-predict-long-term-risk-of-cardiac-death-in-patients-with-hypertrophic-cardiomyopathy
#20
Elena Biagini, Chiara Pazzi, Iacopo Olivotto, Beatrice Musumeci, Giuseppe Limongelli, Giuseppe Boriani, Giuseppe Pacileo, Vittoria Mastromarino, Maria Letizia Bacchi Reggiani, Massimiliano Lorenzini, Francesco Lai, Alessandra Berardini, Francesca Mingardi, Stefania Rosmini, Elvira Resciniti, Claudia Borghi, Camillo Autore, Franco Cecchi, Claudio Rapezzi
The objective of this study was to investigate the prognostic significance of 12-lead electrocardiogram (ECG) patterns in a large multicenter cohort of patients with hypertrophic cardiomyopathy; 1,004 consecutive patients with hypertrophic cardiomyopathy and a recorded standard ECG (64% men, mean age 50 ± 16 years) were evaluated at 4 Italian centers. The study end points were sudden cardiac death (SCD) or surrogates, including appropriate implanted cardiac defibrillator discharge and resuscitated cardiac arrest and major cardiovascular events (including SCD or surrogates and death due to heart failure, cardioembolic stroke, or heart transplantation)...
August 1, 2016: American Journal of Cardiology
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