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Annals of Noninvasive Electrocardiology

Kimmo Koivula, Kjell Nikus, Juho Viikilä, Jyrki Lilleberg, Heini Huhtala, Yochai Birnbaum, Markku Eskola
BACKGROUND: Both Q waves and T-wave inversion (TWI) in the presenting ECG are associated with a progressed stage of myocardial infarction, possibly with less potential for myocardial salvage with reperfusion therapy. Combining the diagnostic information from the Q- and T-wave analyses could improve the prognostic work-up in ST-elevation myocardial infarction (STEMI) patients. METHODS: We sought to determine the prognostic impact of Q waves and TWI in the admission ECG on patient outcome in STEMI...
September 6, 2018: Annals of Noninvasive Electrocardiology
Antonio Bayés de Luna, Adrián Baranchuk, César Niño Pulido, Manuel Martínez-Sellés, Antonio Bayés-Genís, Roberto Elosua, Marcelo V Elizari
The advanced interatrial block (A-IAB) (P ≥ 120 ms plus ± pattern in II, III and aVF) corresponds at atrial level, to right or left advanced bundle branch block at ventricular level, and it is well known that these patterns may be seen transiently in relation to taquicardia or bradycardia (tachycardia or bradycardia dependent right or left bundle branch block). We present for the first time, the same phenomenon at atrial level. In one case, the A-IAB appears in relation to tachycardization and in the other disappears during a pause induced by ventricular premature complex...
September 2, 2018: Annals of Noninvasive Electrocardiology
Daniel Cortez, Nandita Sharma, Jason R Imundo
INTRODUCTION: Noncompaction cardiomyopathy (NCCM) patients may develop sustained ventricular arrhythmias (VA). Currently no known electrocardiogram (ECG) parameter has demonstrated predictive value for VA development. The spatial QRS-T angle has demonstrated ability to identify VA in other cardiomyopathy populations. METHODS: A total of 39 patients with NCCM, defined by compact to non-compact ratio of >2.3 by magnetic resonance imaging, were assessed. The first ECG taken at time of MRI was assessed utilizing the heart rate, the QRS duration (QRSd), the corrected QT interval (QTc), and the spatial QRS-T angle (SPQRS-T angle, three-dimensional angle between the QRS and T-wave vectors) were assessed...
August 27, 2018: Annals of Noninvasive Electrocardiology
Affan Irfan, Yabing Li, Aruni Bhatnagar, Elsayed Z Soliman
BACKGROUND: Although the harmful effect of tobacco exposure on cardiovascular disease (CVD) and its risk factors are well established, the constituents of cigarette-smoke and the pathophysiological mechanism involved are unknown. Recently, deep terminal negativity of P wave in V1 (DTNPV1) has emerged as a marker of left atrial abnormality that predicts atrial fibrillation, stroke, and death due to all-cause or CVD. Therefore, we examined the association between serum cotinine levels with abnormal DTNPV1 using the Third National Health and Nutrition Examination Survey...
August 27, 2018: Annals of Noninvasive Electrocardiology
Sengottuvel Senthilnathan, Rajesh Patel, Mariyappa Narayanan, Gireesan Katholil, Madhukar Pandurang Rao Janawadkar, Thimmakudy Sambasiva Radhakrishnan, Krishna K Sharma
BACKGROUND: The role of underlying mechanisms of yogic strategies which exert beneficiary effects on cardiac autonomic control is poorly understood. We have performed heart rate variability (HRV) analysis on subjects performing yogic methods and control subjects who mimic them through paced breathing and focused attention tasks using external cues. METHODS: Heart rate (HR) time series is generated from electrocardiogram measured from subjects of yogic group (YG); performing yogic practices (n = 15), paced breathing group (PBG); involved in breathing exercises cued at breathing rates (BR) from 3 to 15 cycles per minute (cpm) (n = 23), normal breathing group (NBG) under regular breathing (n = 15), and subjects performing three different cognitive tasks designated as focused attention group (FAG), (n = 24)...
August 22, 2018: Annals of Noninvasive Electrocardiology
Pattara Rattanawong, Jirat Chenbhanich, Poemlarp Mekraksakit, Wasawat Vutthikraivit, Pakawat Chongsathidkiet, Nath Limpruttidham, Narut Prasitlumkum, Eugene H Chung
BACKGROUND: Brugada syndrome (BrS) is an inherited arrhythmic disease linked to SCN5A mutations. It is controversial whether SCN5A mutation carriers possess a greater risk of major arrhythmic events (MAE). We examined the association of SCN5A mutations and MAE in BrS patients. METHODS: We comprehensively searched the databases of MEDLINE and EMBASE from inception to September 2017. Included studies were published cohort and case-control studies that compared MAE in BrS patients with and without SCN5A mutations...
August 20, 2018: Annals of Noninvasive Electrocardiology
Kyndaron Reinier, Aapo L Aro, Audrey Uy-Evanado, Carmen Rusinaru, Harpriya S Chugh, Takahiro Shiota, Jonathan Jui, Sumeet S Chugh
BACKGROUND: Early diagnosis and therapy improves outcomes in heart failure with severely reduced left ventricular ejection fraction (LVEF ≤35%), but some patients may remain undiagnosed. We hypothesized that a combination of electrocardiogram (ECG) markers may identify individuals with severely reduced LVEF. METHODS: From a community-based study in the Northwest US (the Oregon Sudden Unexpected Death Study), we evaluated the prevalence of conventional ECG markers by LVEF...
August 20, 2018: Annals of Noninvasive Electrocardiology
Martin Ibarrola
Myocardial bridges are a congenital anomaly in which a segment of the coronary artery takes a "tunneled" intramuscular course. Few reports have associated myocardial bridges with left-ventricular dysfunction in patients with ischemia. Intermittent left bundle branch block is a conduction disturbance that has been described to be associated with myocardial bridges and cardiac memory. This study reports unusual associations of multiple myocardial bridges, angina, left-ventricular dysfunction, intermittent left bundle branch block, and cardiac memory...
August 17, 2018: Annals of Noninvasive Electrocardiology
Tanawat Attachaipanich, Rungroj Krittayaphong
BACKGROUND: Fragmented QRS (fQRS) complex is an electrocardiographic pattern that reflects the inhomogeneity of ventricular depolarization. The aims of this study were to determine the prognostic significance of fQRS for predicting in-hospital life-threatening arrhythmic complications in ST-elevation myocardial infarction (STEMI) patients, and to identify the most appropriate duration of cardiac rhythm monitoring in STEMI patients with fQRS. METHODS: Patients diagnosed with and treated for STEMI at Siriraj Hospital (Bangkok, Thailand) during 2009-2012 were enrolled...
August 17, 2018: Annals of Noninvasive Electrocardiology
Javier García-Niebla, Andrés Ricardo Pérez-Riera, Raimundo Barbosa-Barros, Jorge Díaz-Muñoz, Rodrigo Daminello-Raimundo, Luiz Carlos de Abreu, Kjell Nikus
Right ventricular involvement in inferior myocardial infarction is a marker of poor prognosis. We present a case of a 62-year-old man with very recent onset of acute chest pain and cardiac shock with the triad of elevated jugular venous pressure, distension of the jugular veins on inspiration, and clear lung fields. In addition, the admission electrocardiogram showed a slurring J wave or lambda-like wave and conspicuous ST segment depression in several leads, predominantly in the lateral precordial (V4-V6), all clinical-electrocardiographic features of ominous prognosis...
August 14, 2018: Annals of Noninvasive Electrocardiology
Andrés Ricardo Pérez-Riera, Raimundo Barbosa-Barros, Rodrigo Daminello-Raimundo, Luiz Carlos de Abreu, Kjell Nikus
Ebstein's anomaly is a congenital heart disease where the most important anatomic feature is the inferior displacement of the tricuspid valve leaflets. Vectorcardiographic features are mainly forgotten and electrocardiographic features may be unrecognized by cardiologists handling adult patients.
August 14, 2018: Annals of Noninvasive Electrocardiology
Alexandre Gamet, Bruno Degand, François Le Gal, Nicolas Bidegain, Anne Delaubier, Brigitte Gilbert-Dussardier, Luc Christiaens, Rodrigue Garcia
BACKGROUND: Patient prognosis in type 1 myotonic dystrophy (DM1) is very poor. Annual 24-hour holter ECG monitoring is recommended but its relevance is debated. Main objective was to determine whether holter ECG parameters could predict global death in DM1 patients and secondarily to assess whether they could predict cardiovascular events and sudden cardiac death, to compare DM1 patients and healthy controls, and to assess their evolution in DM1 over a 5-year period. METHODS: This retrospective study included genetically confirmed DM1...
August 12, 2018: Annals of Noninvasive Electrocardiology
Nicola Tarantino, Francesco Santoro, Francesca Guastafierro, Luigi F M Di Martino, Maria Scarcia, Riccardo Ieva, Antonio Ruggiero, Andrea Cuculo, Enrica Mariano, Matteo Di Biase, Natale Daniele Brunetti
BACKGROUND: Persistent ST-segment elevation in acute coronary syndrome is associated with both short and long-term complications. By contrast, there is limited information about ST-elevation and its evolution during takotsubo (stress) cardiomyopathy (TTC). AIM: To evaluate whether persistent downsloping ST-elevation in the early stages of TTC might correlate with short and long-term clinical events. METHODS: One-hundred fifty-eight consecutive subjects with TTC were prospectively enrolled and assessed by electrocardiogram...
July 9, 2018: Annals of Noninvasive Electrocardiology
Guo-Liang Li, Ardan M Saguner, Guy Hugues Fontaine, Robert Frank
The Epsilon wave was first identified in 1977. Four decades of progress help people to better understand its pathological electrogenesis and diagnostic value. Currently, the Epsilon wave is on the list of the 2010 Task Force recommendations for the diagnosis of arrhythmogenic right ventricular dysplasia (ARVD). In this review, we provide the history of the first recording of the Epsilon wave in coronary artery disease and Uhl's anomaly, subsequently leading to the signal averaging technique to record late potentials...
July 5, 2018: Annals of Noninvasive Electrocardiology
Mikko Jalanko, Heikki Väänänen, Mika Tarkiainen, Petri Sipola, Pertti Jääskeläinen, Kirsi Lauerma, Tiina Laitinen, Tomi Laitinen, Mika Laine, Tiina Heliö, Johanna Kuusisto, Matti Viitasalo
BACKGROUND: Hypertrophic cardiomyopathy (HCM) is characterized by ventricular repolarization abnormalities and risk of ventricular arrhythmias. Our aim was to study the association between the phenotype and ventricular repolarization dynamics in HCM patients. METHODS: HCM patients with either the MYBPC3-Q1061X or TPM1-D175N mutation (n = 46) and control subjects without mutation and hypertrophy (n = 35) were studied with 24-hr ambulatory ECG recordings by measuring time intervals of rate-adapted QT (QTe), maximal QT, and T-wave apex to wave end (TPE) intervals and the QTe/RR slope...
July 4, 2018: Annals of Noninvasive Electrocardiology
Joseph Allencherril, Yama Fakhri, Henrik Engblom, Einar Heiberg, Marcus Carlsson, Jean-Luc Dubois-Rande, Sigrun Halvorsen, Trygve S Hall, Alf-Inge Larsen, Svend Eggert Jensen, Hakan Arheden, Dan Atar, Peter Clemmensen, Maria Sejersten Ripa, Yochai Birnbaum
BACKGROUND: Anterolateral myocardial infarction (MI) is traditionally defined on the electrocardiogram by ST-elevation (STE) in I, aVL, and the precordial leads. Traditional literature holds STE in lead aVL to be associated with occlusion proximal to the first diagonal branch of the left anterior descending coronary artery. However, concomitant ischemia of the inferior myocardium may theoretically lead to attenuation of STE in aVL. We compared segmental distribution of myocardial area at risk (MaR) in patients with and without STE in aVL...
July 4, 2018: Annals of Noninvasive Electrocardiology
Younghoon Kwon, Jeffrey R Misialek, Daniel Duprez, David R Jacobs, Alvaro Alonso, Susan R Heckbert, Ying Y Zhao, Susan Redline, Elsayed Z Soliman
INTRODUCTION: Sleep-disordered breathing (SDB) has been linked to sudden cardiac death (SCD) but the mechanism is unclear. Abnormal QRS-T angle, a novel electrocardiographic (ECG) marker of ventricular repolarization, has been linked to adverse cardiovascular outcomes including SCD. We hypothesized that individuals with SDB have more pronounced abnormality in QRS-T angle. METHODS: We performed a cross-sectional analysis from the Multi-Ethnic Study of Atherosclerosis (MESA) Exam Sleep ancillary study...
July 2, 2018: Annals of Noninvasive Electrocardiology
Gianluigi Guida, Anna Rita Sorbo, Riccardo Fenici, Donatella Brisinda
BACKGROUND: P-wave duration, its dispersion and signal-averaged ECG, are currently used markers of vulnerability to atrial fibrillation (AF). However, since tangential atrial currents are better detectable at the body surface as magnetic than electric signals, we investigated the accuracy of magnetocardiographic mapping (MCG), recorded in unshielded clinical environments, as predictor of AF occurrence. METHODS: MCG recordings, in sinus rhythm (SR), of 71 AF patients and 75 controls were retrospectively analyzed...
June 27, 2018: Annals of Noninvasive Electrocardiology
Emrah Bozbeyoğlu, Emre Aslanger, Özlem Yıldırımtürk, Barış Şimşek, Can Yücel Karabay, Mustafa Aytek Şimşek, Ahmet İlker Tekkeşin, Muzaffer Değertekin, Ömer Kozan
BACKGROUND: It may sometimes be difficult to differentiate subtle ST-segment elevation (STE) due to anterior myocardial infarction (MI) from benign variant (BV) STE. Recently, two related formulas were proposed for this purpose. However, they have never been tested in an external population. MATERIALS AND METHODS: Consecutive patients from May 2017 to January 2018, who were admitted with the diagnosis of acute anterior STEMI, were enrolled. Electrocardiograms were systematically reviewed and only subtle ones were included...
June 25, 2018: Annals of Noninvasive Electrocardiology
Narut Prasitlumkum, Veraprapas Kittipibul, Nath Limpruttidham, Pattara Rattanawong, Pakawat Chongsathidkiet, Thosaporn Boondarikpornpant
INTRODUCTION: Atrial fibrillation (AF) is known as the most common arrhythmia and an independent risk factor for mortality. Recent studies suggest that AF is associated with morbidity and mortality in Takotsubo cardiomyopathy (TTC). However, a systematic review and meta-analysis of the literature have not been done. We assessed the association between AF in patients with TTC and mortality by a systematic review of the literature and a meta-analysis. METHODS: We comprehensively searched the databases of MEDLINE and EMBASE from inception to January 2018...
June 25, 2018: Annals of Noninvasive Electrocardiology
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