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Annals of Noninvasive Electrocardiology

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https://www.readbyqxmd.com/read/28090710/fibrillatory-wave-amplitude-on-transesophageal-ecg-as-a-marker-of-left-atrial-low-voltage-areas-in-patients-with-persistent-atrial-fibrillation
#1
Ran Yin, Yongnan Fu, Zhongming Yang, Bingong Li, Jintian Pen, Zeqi Zheng
BACKGROUND: Low-voltage areas (LVAs) are frequently observed in patients with persistent atrial fibrillation (PeAF) and may represent adverse atrial remodeling. However, noninvasive method of evaluating LAVs is not well established. METHODS: In a cohort of 68 patients with PeAF, endocardial voltage maps of left atrium (LA) were created during sinus rhythm after pulmonary vein isolation (PVI). LVAs were defined as areas with electrogram amplitudes <0.5 mV. LA-LVAs were correlated with clinical, echocardiographic, surface, and transesophageal electrocardiography (TE-ECG) variables...
January 16, 2017: Annals of Noninvasive Electrocardiology
https://www.readbyqxmd.com/read/28058808/repeatability-of-ectopic-beats-from-48-hr-ambulatory-electrocardiography-the-atherosclerosis-risk-in-communities-aric-study
#2
Michelle L Meyer, Elsayed Z Soliman, Lisa M Wruck, Thomas H Mosley, Lynne E Wagenknecht, Anna K Poon, Eric A Whitsel, Alvaro Alonso, Gerardo Heiss, Laura R Loehr
BACKGROUND: The purpose of this study was to characterize the repeatability of ectopic beats, defined by premature atrial contractions (PACs) and premature ventricular contractions (PVCs), on ambulatory electrocardiogram (aECG) monitoring and evaluate the effect of length of aECG monitoring on the repeatability estimates. METHODS: This analysis includes 95 randomly selected participants from the Atherosclerosis Risk in Communities Study (ARIC; 2011-2013). The participants wore a Holter monitor for two, 48-hr periods separated by a mean of 38 days following an identical, standardized protocol...
January 6, 2017: Annals of Noninvasive Electrocardiology
https://www.readbyqxmd.com/read/28044401/atrioventricular-synchrony-in-the-background-of-ventricular-noise-and-undersensing
#3
Paweł T Matusik, Andrzej Ząbek, Patrycja S Matusik, Barbara Małecka, Jacek Lelakowski
The 24-hr electrocardiogram (ECG) interpretation in patients with double-chamber pacemakers may be challenging. The difficulty increases if not well-known pacemaker algorithm and device malfunction coexist. We show atrial synchronization pace (ASP) in a patient with ventricular lead damage. We provide detailed description of electrocardiogram and intracardiac electrogram. ASP may confuse 24-hr ECG monitoring interpretation, especially in patients with ventricular lead dysfunction.
January 3, 2017: Annals of Noninvasive Electrocardiology
https://www.readbyqxmd.com/read/28044391/initial-electrocardiogram-as-determinant-of-hospital-course-in-st-elevation-myocardial-infarction
#4
Michael A Millard, Vijaiganesh Nagarajan, Luke C Kohan, Robert C Schutt, Ellen C Keeley
BACKGROUND: A proportion of patients with ST elevation myocardial infarction (STEMI) have an initial electrocardiogram (ECG) that is nondiagnostic and are definitively diagnosed on a subsequent ECG. Our aim was to assess whether patients with a nondiagnostic initial ECG are different than those with a diagnostic initial ECG. METHODS: We collected demographic, ECG, medication, angiographic, and in-hospital clinical outcome data in consecutive patients undergoing primary percutaneous coronary intervention for STEMI at our institution from June 2009 to June 2013...
January 3, 2017: Annals of Noninvasive Electrocardiology
https://www.readbyqxmd.com/read/28044381/the-romhilt-estes-electrocardiographic-score-predicts-sudden-cardiac-arrest-independent-of-left-ventricular-mass-and-ejection-fraction
#5
Navid Darouian, Aapo L Aro, Kumar Narayanan, Audrey Uy-Evanado, Carmen Rusinaru, Kyndaron Reinier, Karen Gunson, Jonathan Jui, Sumeet S Chugh
BACKGROUND: The Romhilt-Estes point score system (RE) is an established ECG criterion for diagnosing left ventricular hypertrophy (LVH). In this study, we assessed for the first time, whether RE and its components are predictive of sudden cardiac arrest (SCA) independent of left ventricular (LV) mass. METHODS: Sudden cardiac arrest (SCA) cases occurring between 2002 and 2014 in a Northwestern US metro region (catchment area approx. 1 million) were compared to geographic controls...
January 3, 2017: Annals of Noninvasive Electrocardiology
https://www.readbyqxmd.com/read/28019054/interatrial-block-and-interatrial-septal-thickness-in-patients-with-paroxysmal-atrial-fibrillation-undergoing-catheter-ablation-long-term-follow-up-study
#6
Enes E Gul, Raveen Pal, Jane Caldwell, Usama Boles, Wilma Hopman, Benedict Glover, Kevin A Michael, Damian Redfearn, Chris Simpson, Hoshiar Abdollah, Adrian Baranchuk
BACKGROUND: Interatrial block (IAB) is a strong predictor of recurrence of atrial fibrillation (AF). IAB is a conduction delay through the Bachman region, which is located in the upper region of the interatrial space. During IAB, the impulse travels from the right atrium to the interatrial septum (IAS) and coronary sinus to finally reach the left atrium in a caudocranial direction. No relation between the presence of IAB and IAS thickness has been established yet. OBJECTIVE: To determine whether a correlation exists between the degree of IAB and the thickness of the IAS and to determine whether IAS thickness predicts AF recurrence...
December 25, 2016: Annals of Noninvasive Electrocardiology
https://www.readbyqxmd.com/read/28019051/remote-supervision-to-decrease-hospitalization-rate-unified-and-integrated-platform-for-data-collected-from-devices-manufactured-by-different-companies-design-and-rationale-of-the-result-study
#7
Mateusz Tajstra, Adam Sokal, Arkadiusz Gwóźdź, Marcin Wilczek, Adam Gacek, Konrad Wojciechowski, Elżbieta Gadula-Gacek, Elżbieta Adamowicz-Czoch, Katarzyna Chłosta-Niepiekło, Krzysztof Milewski, Piotr Rozentryt, Zbigniew Kalarus, Mariusz Gąsior, Lech Poloński
The number of patients with heart failure implantable cardiac electronic devices (CIEDs) is growing. Hospitalization rate in this group is very high and generates enormous costs. To avoid the need for hospital treatment, optimized monitoring and follow-up is crucial. Remote monitoring (RM) has been widely put into practice in the management of CIEDs but it may be difficult due to the presence of differences in systems provided by device manufacturers and loss of gathered data in case of device reimplantation...
December 25, 2016: Annals of Noninvasive Electrocardiology
https://www.readbyqxmd.com/read/28019050/electrocardiographic-left-ventricular-hypertrophy-predicts-atrial-fibrillation-independent-of-left-ventricular-mass
#8
Nikhil Patel, Wesley T O'Neal, S Patrick Whalen, Elsayed Z Soliman
BACKGROUND: Although left ventricular hypertrophy (LVH) detected by electrocardiography (ECG-LVH) and echocardiography (echo-LVH) independently predict cardiovascular disease events, it is unclear if ECG-LVH and echo-LVH independently predict atrial fibrillation (AF). METHODS: This analysis included 4,904 participants (40% male; 85% white) from the Cardiovascular Health Study who were free of baseline AF and major intraventricular conduction delays. ECG-LVH was defined by Minnesota Code Classification from baseline ECG data...
December 25, 2016: Annals of Noninvasive Electrocardiology
https://www.readbyqxmd.com/read/28012232/sustained-ventricular-tachycardia-as-a-first-manifestation-of-hypertrophic-cardiomyopathy-with-mid-ventricular-obstruction-and-apical-aneurysm-in-an-elderly-female-patient
#9
Polychronis Dilaveris, Constantina Aggeli, Andreas Synetos, Ioannis Skiadas, Christos-Konstantinos Antoniou, Eleftherios Tsiamis, Konstantinos Gatzoulis, Ioannis Kallikazaros, Dimitrios Tousoulis
Sustained ventricular tachycardia complicating left ventricular apical aneurysms has been reported previously solely in middle-aged patients with hypertrophic cardiomyopathy and mid-cavity obstruction. We report a case of an elderly female patient who presented with incessant ventricular tachycardia as the first clinical manifestation of hypertrophic cardiomyopathy with mid-ventricular obstruction and apical aneurysm.
December 24, 2016: Annals of Noninvasive Electrocardiology
https://www.readbyqxmd.com/read/28012220/heart-rate-variability-analysis-during-immediate-recovery-from-exercise-in-overweight-obese-healthy-young-adult-females
#10
Sahar M El Agaty, Azra Kirmani, Ezaz Labban
BACKGROUND: Data on heart rate variability (HRV) changes during immediate recovery period after exercise in overweight/obese healthy young adult females are still inconclusive. The aim of this study was to evaluate the heart rate variability (HRV), heart rate recovery (HRR), and arterial blood pressure immediately after cessation of exercise in overweight/obese healthy young adult females. METHODS: This study was carried out in the laboratory of the Physiology Department, Faculty of Medicine, King Abdulaziz University...
December 24, 2016: Annals of Noninvasive Electrocardiology
https://www.readbyqxmd.com/read/28008694/a-narrow-qrs-tachycardia-and-cannon-a-waves-what-is-the-mechanism
#11
Hussam Ali, Gianluca Epicoco, Guido De Ambroggi, Pierpaolo Lupo, Sara Foresti, Riccardo Cappato
Regular narrow QRS tachycardia, particularly if well-tolerated, is usually considered a "benign" arrhythmia of a supraventricular origin. This case concerns an 82-year-old male with ischemic heart disease who presented with recurrent episodes of a narrow QRS tachycardia that was initially diagnosed and treated as atrial tachyarrhythmia. However, careful physical examination and ECG analysis established the correct diagnosis, and the patient was managed appropriately. Remarkably, the observation of irregular cannon A waves, and Lewis lead recording, confirmed atrioventricular dissociation during tachycardia and indicated its underlying mechanism...
December 23, 2016: Annals of Noninvasive Electrocardiology
https://www.readbyqxmd.com/read/27995684/comparing-qt-interval-variability-of-semiautomated-and-high-precision-ecg-methodologies-in-seven-thorough-qt-studies-implications-for-the-power-of-studies-intended-for-definitive-evaluation-of-a-drug-s-qt-effect
#12
Karin Meiser, Pierre Jordaan, Sasha Latypova, Borje Darpo
BACKGROUND: In studies of drug effects on electrocardiographic parameters, the level of precision in measuring QTc interval changes will influence a study's ability to detect small effects. METHODS: Variability data from investigational, placebo and moxifloxacin treatments from seven thorough QT studies performed by the same sponsor were analyzed with the objective to compare the performance of two commonly used approaches for ECG interval measurements: semiautomated (SA) and the high-precision QT (HPQT) analysis...
December 19, 2016: Annals of Noninvasive Electrocardiology
https://www.readbyqxmd.com/read/27982498/anticoagulation-in-patients-at-high-risk-of-stroke-without-documented-atrial-fibrillation-time-for-a-paradigm-shift
#13
EDITORIAL
Antoni Bayés de Luna, Adrian Baranchuk, Manuel Martínez-Sellés, Pyotr G Platonov
No abstract text is available yet for this article.
December 16, 2016: Annals of Noninvasive Electrocardiology
https://www.readbyqxmd.com/read/27800644/clinical-risk-profile-score-predicts-all-cause-mortality-but-not-implantable-cardioverter-defibrillator-intervention-rate-in-a-large-unselected-cohort-of-patients-with-congestive-heart-failure
#14
Johanna Sjöblom, Rasmus Borgquist, Fredrik Gadler, Torbjörn Kalm, Lina Ljung, Mårten Rosenqvist, Viveka Frykman, Pyotr G Platonov
BACKGROUND: Primary prophylactic implantable cardioverter defibrillator (ICD) therapy is indicated for patients with reduced left ventricular ejection fraction (LVEF). We aimed to determine if preoperative clinical risk profiling can predict long-term benefit, and if clinical risk scores can be applied and improved in a patient cohort outside the clinical trial setting. METHODS: Using registry data, 789 patients with reduced LVEF who received ICDs for primary prevention during 2006-2011 were identified (age 64 ± 11 years, 82% men, 63% ischemic etiology, 52% cardiac resynchronization therapy with defibrillator)...
November 1, 2016: Annals of Noninvasive Electrocardiology
https://www.readbyqxmd.com/read/27785856/minimal-t-wave-representation-and-its-use-in-the-assessment-of-drug-arrhythmogenicity
#15
Saeed Shakibfar, Claus Graff, Jørgen K Kanters, Jimmi Nielsen, Samuel Schmidt, Johannes J Struijk
BACKGROUND: Recently, numerous models and techniques have been developed for analyzing and extracting features from the T wave which could be used as biomarkers for drug-induced abnormalities. The majority of these techniques and algorithms use features that determine readily apparent characteristics of the T wave, such as duration, area, amplitude, and slopes. METHODS: In the present work the T wave was down-sampled to a minimal rate, such that a good reconstruction was still possible...
October 27, 2016: Annals of Noninvasive Electrocardiology
https://www.readbyqxmd.com/read/27550400/low-dose-quinidine-effectively-reduced-shocks-in-brugada-syndrome-patients-with-an-implantable-cardioverter-defibrillator-a-chinese-case-series-report
#16
Tongtong Shen, Binbin Yuan, Jie Geng, Chun Chen, Xiujuan Zhou, Qijun Shan
BACKGROUND: Only implantable cardioverter defibrillators (ICD) have been proven to prevent sudden cardiac death (SCD) in patients with Brugada syndrome (BrS). However, ICD discharge, whether appropriate or inappropriate, leads to impaired quality of life and even increases rehospitalization. Quinidine might prevent the recurrence of ventricular arrhythmia (VA); however, the effect of low-dose quinidine for preventing spontaneous arrhythmias remains less clear. METHODS: In our cardiology center, 10 confirmed patients with BrS (all men, mean age 38...
January 2017: Annals of Noninvasive Electrocardiology
https://www.readbyqxmd.com/read/27422673/the-qt-scale-a-weight-scale-measuring-the-qtc-interval
#17
Jean-Philippe Couderc, Connor Beshaw, Xiaodan Niu, Ernesto Serrano-Finetti, Oscar Casas, Ramon Pallas-Areny, Spencer Rosero, Wojciech Zareba
INTRODUCTION: Despite the strong evidence of the clinical utility of QTc prolongation as a surrogate marker of cardiac risk, QTc measurement is not part of clinical routine either in hospital or in physician offices. We evaluated a novel device ("the QT scale") to measure heart rate (HR) and QTc interval. METHOD: The QT scale is a weight scale embedding an ECG acquisition system with four limb sensors (feet and hands: lead I, II, and III). We evaluated the reliability of QT scale in healthy subjects (cohort 1) and cardiac patients (cohorts 2 and 3) considering a learning (cohort 2) and two validation cohorts...
January 2017: Annals of Noninvasive Electrocardiology
https://www.readbyqxmd.com/read/27411891/left-bundle-branch-block-and-complete-heart-block-complicating-inferior-myocardial-infarction
#18
Jillian S Gruber, Brad Stair, Mehmet Aktas, Katia Bravo-Jaimes
Left bundle branch block following inferior myocardial infarction remains uncommon and scarcely reported in the literature. We describe a rare presentation of a 58-year-old male patient who developed left bundle branch block and third degree atrioventricular block after inferior myocardial infarction requiring permanent pacemaker placement. Pathophysiology, impact on mortality, and management options are discussed.
January 2017: Annals of Noninvasive Electrocardiology
https://www.readbyqxmd.com/read/27265641/dynamic-changes-in-high-sensitivity-cardiac-troponin-i-are-associated-with-dynamic-changes-in-sum-absolute-qrst-integral-on-surface-electrocardiogram-in-acute-decompensated-heart-failure
#19
Larisa G Tereshchenko, Albert Feeny, Erica Shelton, Thomas Metkus, Andrew Stolbach, Ernest Mavunga, Shannon Putman, Frederick K Korley
BACKGROUND: A three-dimensional electrocardiographic (ECG) metric, the sum absolute QRST integral (SAI QRST), predicts ventricular arrhythmias in heart failure (HF) patients with implantable cardioverter defibrillator and mechanical response to cardiac resynchronization therapy. We hypothesized that there is an association between patient-specific changes in SAI QRST and myocardial injury as measured by high-sensitivity troponin I (hsTnI). METHODS: Sum absolute integral QRST on resting 12-lead ECG and hsTnI were measured simultaneously, every 3 hours, and during 12-hour observation period in a prospective cohort of emergency department patients (n = 398; mean age 57...
January 2017: Annals of Noninvasive Electrocardiology
https://www.readbyqxmd.com/read/27253398/racial-and-ethnic-differences-in-electrocardiographic-features-of-takotsubo-cardiomyopathy
#20
LETTER
Federico Guerra, Alessandro Capucci
No abstract text is available yet for this article.
January 2017: Annals of Noninvasive Electrocardiology
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