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Annals of Noninvasive Electrocardiology

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https://www.readbyqxmd.com/read/29984535/-lambda-wave-st-elevation-is-associated-with-severe-prognosis-in-stress-takotsubo-cardiomyopathy
#1
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
https://www.readbyqxmd.com/read/29978588/epsilon-waves-milestones-in-the-discovery-and-progress
#2
REVIEW
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
https://www.readbyqxmd.com/read/29974557/fibrosis-and-wall-thickness-affect-ventricular-repolarization-dynamics-in-hypertrophic-cardiomyopathy
#3
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
https://www.readbyqxmd.com/read/29971868/the-significance-of-st-elevation-in-avl-in-anterolateral-myocardial-infarction-an-assessment-by-cardiac-magnetic-resonance-imaging
#4
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
https://www.readbyqxmd.com/read/29963729/sleep-disordered-breathing-and-electrocardiographic-qrs-t-angle-the-mesa-study
#5
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
https://www.readbyqxmd.com/read/29947446/predictive-value-of-unshielded-magnetocardiographic-mapping-to-differentiate-atrial-fibrillation-patients-from-healthy-subjects
#6
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
https://www.readbyqxmd.com/read/29938879/a-tale-of-two-formulas-differentiation-of-subtle-anterior-mi-from-benign-st-segment-elevation
#7
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
https://www.readbyqxmd.com/read/29938868/the-presence-of-atrial-fibrillation-in-takotsubo-cardiomyopathy-is-predictive-of-mortality-systematic-review-and-meta-analysis
#8
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
https://www.readbyqxmd.com/read/29938866/association-of-qrs-t-angle-and-heart-rate-variability-with-major-cardiac-events-and-mortality-in-hemodialysis-patients
#9
Dimitrios Poulikakos, Katerina Hnatkova, Debasish Banerjee, Marek Malik
INTRODUCTION: Mortality in hemodialysis (HD) patients is high with significant proportion attributed to fatal arrhythmias. In a pilot study, we showed that intradialytic electrocardiographic (ECG) monitoring can yield stable profiles of selected repolarisation descriptors and heart rate variability (HRV) parameters. This study investigated the relationship of these ECG markers with major adverse cardiac events (MACE) and mortality. METHODS: Continuous ECGs were obtained during HD and repeated five times at 2-week intervals...
June 25, 2018: Annals of Noninvasive Electrocardiology
https://www.readbyqxmd.com/read/29932268/fragmented-qrs-and-mortality-in-patients-undergoing-percutaneous-intervention-for-st-elevation-myocardial-infarction-systematic-review-and-meta-analysis
#10
Napatt Kanjanahattakij, Pattara Rattanawong, Tanawan Riangwiwat, Narut Prasitlumkum, Nath Limpruttidham, Pakawat Chongsathidkiet, Wasawat Vutthikraivit, Erin Crossey
BACKGROUND: Fragmented QRS reflects disturbances in the myocardium predisposing the heart to ventricular tachyarrhythmias. Recent studies suggest that fragmented QRS (fQRS) is associated with mortality in ST-elevation myocardial infarction (STEMI) patients who underwent percutaneous coronary intervention (PCI). However, a systematic review and meta-analysis of the literature has not been done. We assessed the association between fQRS and overall mortality in STEMI patients who subsequently underwent PCI by a systematic review and meta-analysis...
June 22, 2018: Annals of Noninvasive Electrocardiology
https://www.readbyqxmd.com/read/29932265/left-bundle-branch-block-epidemiology-etiology-anatomic-features-electrovectorcardiography-and-classification-proposal
#11
REVIEW
Andrés R Pérez-Riera, Raimundo Barbosa-Barros, Marianne P C de Rezende Barbosa, Rodrigo Daminello-Raimundo, Luiz C de Abreu, Kjell Nikus
In left bundle branch block (LBBB), the ventricles are activated in a sequential manner with alterations in left ventricular mechanics, perfusion, and workload resulting in cardiac remodeling. Underlying molecular, cellular, and interstitial changes manifest clinically as changes in size, mass, geometry, and function of the heart. Cardiac remodeling is associated with progressive ventricular dysfunction, arrhythmias, and impaired prognosis. Clinical and diagnostic notions about LBBB have evolved from a simple electrocardiographic alteration to a critically important finding affecting diagnostic and clinical management of many patients...
June 22, 2018: Annals of Noninvasive Electrocardiology
https://www.readbyqxmd.com/read/29911325/questionable-validity-of-left-ventricular-hypertrophy-cutoff-values-in-morbidly-and-super-morbidly-obese-patients
#12
Justyna Domienik-Karłowicz, Zuzanna Rymarczyk, Wojciech Lisik, Katarzyna Kurnicka, Michał Ciurzyński, Maksymilian Bielecki, Maciej Kosieradzki, Piotr Pruszczyk
BACKGROUND: Current diagnostic ECG criteria of left ventricular hypertrophy in obese patients are still lacking. OBJECTIVE: To assess the current ECG diagnostic criteria of LVH, and to validate our previously proposed criteria in a group of patients with morbid obesity. METHODS: A group of consecutive 429 obese patients (MOP) with BMI of at least 35 kg/m2 (mean age 38.6 ± 8.9 years, BMI 48.7 ± 9.0 kg/m2 ; 323 females, 106 males) were included...
June 17, 2018: Annals of Noninvasive Electrocardiology
https://www.readbyqxmd.com/read/29873439/the-role-of-baseline-and-post-procedural-frontal-plane-qrs-t-angles-for-cardiac-risk-assessment-in-patients-with-acute-stemi
#13
Tugce Colluoglu, Zulkif Tanriverdi, Baris Unal, Emin Evren Ozcan, Huseyin Dursun, Dayimi Kaya
BACKGROUND: To our knowledge, no study so far investigated the importance of post-procedural frontal QRS-T angle f(QRS-T) in ST segment elevation myocardial infarction (STEMI). The aim of our study was to investigate the role of baseline and post-procedural f(QRS-T) angles for determining high risk STEMI patients, and the success of reperfusion. METHODS: A total of 248 patients with first acute STEMI that underwent primary percutaneous coronary intervention (pPCI) or thrombolytic therapy (TT) between 2013 and 2014 were included in this study...
June 6, 2018: Annals of Noninvasive Electrocardiology
https://www.readbyqxmd.com/read/29863781/ultra-short-heart-rate-variability-recording-reliability-the-effect-of-controlled-paced-breathing
#14
Hiago M Melo, Thiago C Martins, Lucas M Nascimento, Alexandre A Hoeller, Roger Walz, Emílio Takase
BACKGROUND: Recent studies have reported that Heart Rate Variability (HRV) indices remain reliable even during recordings shorter than 5 min, suggesting the ultra-short recording method as a valuable tool for autonomic assessment. However, the minimum time-epoch to obtain a reliable record for all HRV domains (time, frequency, and Poincare geometric measures), as well as the effect of respiratory rate on the reliability of these indices remains unknown. METHODS: Twenty volunteers had their HRV recorded in a seated position during spontaneous and controlled respiratory rhythms...
June 4, 2018: Annals of Noninvasive Electrocardiology
https://www.readbyqxmd.com/read/29856099/impact-of-st-segment-resolution-on-clinical-outcome-in-patients-with-st-segment-elevation-myocardial-infarction-and-preserved-left-ventricular-function
#15
Ahmed Bendary, Wael Tawfeek, Mohamed Mahros, Mohamed Salem
BACKGROUND: Patients with successful reperfusion and preserved left ventricular ejection fraction (LVEF) after ST-segment myocardial infarction (STEMI)have always been thought to have low risk for adverse events. Great interest is focused on finding simple, noninvasive tools to refine risk stratification among them. OBJECTIVES: We hypothesized that degree of ST-segment resolution (STR) after STEMI can identify high-risk group among patients with LVEF ≥ 50% following STEMI...
June 1, 2018: Annals of Noninvasive Electrocardiology
https://www.readbyqxmd.com/read/29856088/seven-years-follow-up-of-early-repolarisation-patterns-in-french-elite-special-forces
#16
Nicolas-Charles Roche, Pierre-Laurent Massoure, Jean-Claude Deharo, Philippe Paule, Laurent Fourcade
BACKGROUND: The early repolarization pattern (ERP) may be a marker of increased risk for sudden cardiac death (SCD). Influence of ethnicity on the ERP has not been extensively studied. The aim of this study was to evaluate the epidemiology of ERP in a male multiethnic population. METHODS: ECG analysis was performed among consecutive recruits from the French Foreign Legion. ERP was characterized by a J-point elevation ≥0.1 mV in two continuous inferior-lateral leads, and high amplitude early repolarization (HAER-potentially malignant pattern) by an elevation ≥0...
June 1, 2018: Annals of Noninvasive Electrocardiology
https://www.readbyqxmd.com/read/29846029/a-novel-use-of-cardiac-resynchronization-therapy-defibrillator-device-in-hypertrophic-cardiomyopathy
#17
Serkan Cay, Ozcan Ozeke, Firat Ozcan, Dursun Aras, Serkan Topaloglu
Dual-chamber implantable cardioverter-defibrillator is generally used in patients with atrioventricular block and hypertrophic cardiomyopathy with preserved left ventricular ejection fraction. In the current case, a cardiac resynchronization therapy-defibrillator device was implanted in a patient with non-obstructive hypertrophic cardiomyopathy with preserved ejection fraction and atrioventricular block to achieve both more physiological pacing and life-threatening ventricular arrhythmia management.
May 30, 2018: Annals of Noninvasive Electrocardiology
https://www.readbyqxmd.com/read/29846022/predictive-value-of-the-baseline-electrocardiogram-st-segment-pattern-in-cardiogenic-shock-results-from-the-cardshock-study
#18
Tuija Javanainen, Heli Tolppanen, Johan Lassus, Markku S Nieminen, Alessandro Sionis, Jindrich Spinar, José Silva-Cardoso, Matias Greve Lindholm, Marek Banaszewski, Veli-Pekka Harjola, Raija Jurkko
BACKGROUND: The most common aetiology of cardiogenic shock (CS) is acute coronary syndrome (ACS), but even up to 20%-50% of CS is caused by other disorders. ST-segment deviations in the electrocardiogram (ECG) have been investigated in patients with ACS-related CS, but not in those with other CS aetiologies. We set out to explore the prevalence of different ST-segment patterns and their associations with the CS aetiology, clinical findings and 90-day mortality. METHODS: We analysed the baseline ECG of 196 patients who were included in a multinational prospective study of CS...
May 30, 2018: Annals of Noninvasive Electrocardiology
https://www.readbyqxmd.com/read/29806716/comparison-of-four-lbbb-definitions-for-predicting-mortality-in-patients-receiving-cardiac-resynchronization-therapy
#19
Marek Jastrzębski, Piotr Kukla, Roksana Kisiel, Kamil Fijorek, Paweł Moskal, Danuta Czarnecka
BACKGROUND: Left bundle branch block (LBBB) is considered an important prognostic parameter in cardiac resynchronization therapy (CRT). We aimed to evaluate, in a sizeable cohort of patients with CRT, long-term mortality, and morbidity according to four different electrocardiographic definitions of LBBB. METHODS: This longitudinal cohort study included consecutive patients who underwent CRT device implantation in our institution in years 2006-2014. Two endpoints were assessed: (a) death from any cause or urgent heart transplantation, and (b) death from any cause or heart failure admission...
May 28, 2018: Annals of Noninvasive Electrocardiology
https://www.readbyqxmd.com/read/29736948/chest-lead-st-j-amplitudes-using-arm-electrodes-as-reference-instead-of-the-wilson-central-terminal-in-smartphone-ecg-applications-influence-on-st-elevation-myocardial-infarction-criteria-fulfillment
#20
Thomas Lindow, Henrik Engblom, Ardavan Khoshnood, Ulf Ekelund, Marcus Carlsson, Olle Pahlm
BACKGROUND: "Smartphone 12-lead ECG" for the assessment of acute myocardial ischemia has recently been introduced. In the smartphone 12-lead ECG either the right or the left arm can be used as reference for the chest electrodes instead of the Wilson central terminal. These leads are labeled "CR leads" or "CL leads." We aimed to compare chest-lead ST-J amplitudes, using either CR or CL leads, to those present in the conventional 12-lead ECG, and to determine sensitivity and specificity for the diagnosis of STEMI for CR and CL leads...
May 7, 2018: Annals of Noninvasive Electrocardiology
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