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Journal of Electrocardiology

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https://www.readbyqxmd.com/read/29454650/author-s-re-sponse-to-letter-to-the-editor-from-hay%C3%A4-rl%C3%A4-o%C3%A4-lu-m-et-al
#1
LETTER
Metin Cagdas
No abstract text is available yet for this article.
February 8, 2018: Journal of Electrocardiology
https://www.readbyqxmd.com/read/29454649/relationship-between-vectorcardiographic-qrs-area-myocardial-scar-quantification-and-response-to-cardiac-resynchronization-therapy
#2
Uyên Châu Nguyên, Simon Claridge, Kevin Vernooy, Elien B Engels, Reza Razavi, Christopher A Rinaldi, Zhong Chen, Frits W Prinzen
PURPOSE: To investigate the relationship between vectorcardiography (VCG) and myocardial scar on cardiac magnetic resonance (CMR) imaging, and whether combining these metrics may improve cardiac resynchronization therapy (CRT) response prediction. METHODS: Thirty-three CRT patients were included. QRSarea , Tarea and QRSTarea were derived from the ECG-synthesized VCG. CMR parameters reflecting focal scar core (Scar2SD , Gray2SD ) and diffuse fibrosis (pre-T1, extracellular volume [ECV]) were assessed...
February 8, 2018: Journal of Electrocardiology
https://www.readbyqxmd.com/read/29452709/late-restored-cardiac-function-after-successful-resynchronization-by-right-posterior-accessory-pathway-ablation-in-wolff-parkinson-white-syndrome-associated-dilated-cardiomyopathy
#3
Kun-Lang Wu, Shuenn-Nan Chiu, Chun-An Chen, Chun-Wei Lu, Wei-Chieh Tseng, Jou-Kou Wang, Mei-Hwan Wu
No abstract text is available yet for this article.
February 8, 2018: Journal of Electrocardiology
https://www.readbyqxmd.com/read/29402396/total-occlusion-of-the-left-main-coronary-artery-presenting-as-st-elevation-myocardial-infarction
#4
Yun-Tao Zhao, Hang Zhou, Ruiqi Shi, Bin Wang
An ECG pattern of widespread ST depression in six or more precordial and inferior leads, accompanied by ST-segment elevation in the aVR and/or V1 leads, is typical of the non-ST-segment elevation myocardial infarction (NSTEMI) pattern associated left main (LM) artery occlusion, but this ECG pattern is really associated with a subocclusion of the LM, or in the case that the LM was occluded with the presence of collateral circulation. There are few reports of ST-elevation myocardial infarction (STEMI) due to acute total LM occlusion...
February 2, 2018: Journal of Electrocardiology
https://www.readbyqxmd.com/read/29395105/new-formula-for-defining-normal-and-prolonged-qt-in-patients-with-bundle-branch-block
#5
Lior Yankelson, Aviram Hochstadt, Ben Sadeh, Benley Pick, Ariel Finkelstein, Raphael Rosso, Sami Viskin
OBJECTIVES: To predict the QT interval in the presence of normal QRS for patients with left bundle branch block (LBBB). BACKGROUND: There is no acceptable method for simple and reliable QT correction for patients with bundle branch block (BBB). METHODS: We measured the QT interval in patients with new onset LBBB who had a recent electrocardiogram with narrow QRS for comparison. 48 patients who developed in-hospital LBBB were studied. Patients who had similar heart rate before and after LBBB were included...
January 30, 2018: Journal of Electrocardiology
https://www.readbyqxmd.com/read/29395104/renal-denervation-as-a-second-line-option-in-a-patient-with-electrical-storm-resistant-to-medical-treatment-and-conventional-radiofrequency-catheter-ablation
#6
Dirk Prochnau, Matthias Hoyme
Electrical storm (ES) represents a critical state of electrical instability. We describe a patient with coronary artery disease, mechanical aortic valve replacement, and reduced left ventricular function with recurrent ICD shocks. Despite medical treatment with beta-blocker and amiodarone, and after successful ablation of different VT morphologies in combination with substrate modification, ES could not be controlled. We performed renal denervation (RDN) to reduce arrhythmic burden. Thereafter, patient remained free from sustained and non-sustained VTs at 6-month follow-up...
January 30, 2018: Journal of Electrocardiology
https://www.readbyqxmd.com/read/29366496/normal-values-of-the-ventricular-gradient-and-qrs-t-angle-derived-from-the-pediatric-electrocardiogram
#7
Vivian P Kamphuis, Nico A Blom, Erik W van Zwet, Sumche Man, Arend D J Ten Harkel, Arie C Maan, Cees A Swenne
BACKGROUND: Normal values of the mathematically-synthesized vectorcardiogram (VCG) are lacking for children. Therefore, the objective of this study was to assess normal values of the pediatric synthesized VCG (spatial QRS-T angle [SA] and ventricular gradient [VG]). METHODS: Electrocardiograms (ECGs) of 1263 subjects (0-24 years) with a normal heart were retrospectively selected. VCGs were synthesized by the Kors matrix. Normal values (presented as 2nd and 98th percentiles) were assessed by quantile regression with smoothing by splines...
January 6, 2018: Journal of Electrocardiology
https://www.readbyqxmd.com/read/29331308/a-tribute-in-life-to-the-world-icon-of-the-cardiology-of-heights-dr-dante-pe%C3%A3-aloza-from-peru
#8
REVIEW
Jorge Luis Sotomayor-Perales, Edgardo Schapachnik, Raimundo Barbosa-Barros, Andrés Ricardo Pérez-Riera
No abstract text is available yet for this article.
January 4, 2018: Journal of Electrocardiology
https://www.readbyqxmd.com/read/29310923/changes-in-spatial-qrs-t-angle-and-qtc-interval-in-patients-with-traumatic-brain-injury-with-or-without-intra-abdominal-hypertension
#9
Wojciech Dabrowski, Todd T Schlegel, Jaroslaw Wosko, Radoslaw Rola, Ziemowit Rzecki, Manu L N G Malbrain, Andrzej Jaroszynski
No abstract text is available yet for this article.
December 23, 2017: Journal of Electrocardiology
https://www.readbyqxmd.com/read/29290387/exercise-induced-left-bundle-branch-block-a-case-report-with-stress-echocardiographic-assessment
#10
Jesper Jensen, Juliane Theilade, Thomas Kümler
We report the case of a 51-year-old male who presented with exertional chest discomfort and dyspnea concurring with an exercise-induced left bundle branch block (EI-LBBB). Possible underlying causes and treatment options are presented and discussed. The case represents the first stress-echocardiographic assessment of a case with EI-LBBB, performed in order to document a possible left ventricular dyssynchrony during the EI-LBBB and thereby the possible treatment option of biventricular pacemaker implantation...
December 21, 2017: Journal of Electrocardiology
https://www.readbyqxmd.com/read/29304992/proximal-rca-occlusion-producing-anterior-st-segment-elevation-q-waves-and-t-wave-inversion
#11
Brooks Walsh, Ken Grauer, Edward R Tuohy, Stephen W Smith
An ST segment elevation myocardial infarction (STEMI) that produces anterior ST segment elevation (STE) is typically caused by acute occlusion of the left anterior descending (LAD) artery. Anterior STE, however, may also be caused by acute occlusion of either the proximal right coronary artery (RCA) or the right ventricular marginal branch (RVB). It has been thought that, in contrast to occlusions of the LAD, proximal RCA/RVB occlusion rarely causes Q waves in the right precordial leads. We present a case where a proximal RCA occlusion produced not only anterior STE, but also anterior T wave inversions and anterior Q waves...
December 19, 2017: Journal of Electrocardiology
https://www.readbyqxmd.com/read/29277286/the-relationship-between-the-s-wave-in-lead-1-and-recurrence-of-rvot-pvc-ablation
#12
Hacı Murat Güneş, Gültekin Günhan Demir, Oğuz Karaca, Filiz Kızılırmak Yılmaz, Ersin İbişoğlu, Tayyar Gökdeniz, Mehmet Onur Omaygenç, Ekrem Güler, Gamze Babur Güler, Ümeyir Savur, Beytullah Çakal, İrfan Barutçu, Fethi Kılıçaslan
BACKGROUND: Radiofrequency catheter ablation (CA) is a common non-pharmacological treatment option for ventricular premature contractions (PVCs) originating from right ventricular outflow tract (RVOT). In this study, we aimed to investigate the relationship between recurrence after CA for RVOT-PVC and S-wave in lead 1 that was shown to be associated with RVOT depolarization. METHODOLOGY: A total of 104 patients who were referred to our clinic for CA for idiopathic RVOT-PVC between 2012 and 2015years were enrolled...
December 14, 2017: Journal of Electrocardiology
https://www.readbyqxmd.com/read/29275956/lyme-carditis-early-occurrence-and-prolonged-recovery
#13
Jianwei Fu Md, Luna Bhatta
Lyme carditis is an uncommon manifestation of early disseminated Lyme disease. This case illustrates a 66-year-old male with complaints of fatigue, myalgias, and fever after a tick bite 3days earlier. A large erythema migrans was found on the chest wall. Initial electrocardiogram showed sinus rhythm with second degree 2:1 atrioventricular (AV) block, which progressed to intermittent complete AV block rapidly. He was treated with intravenous ceftriaxone. Over the course of 2-weeks of antibiotic therapy, the intermittent high-grade AV block improved slowly and progressively...
December 14, 2017: Journal of Electrocardiology
https://www.readbyqxmd.com/read/29331309/what-is-the-predictive-value-of-st-segment-depression-in-inferior-leads-in-first-acute-anterior-myocardial-infarction
#14
Mert İlker Hayıroğlu, Muhammed Keskin, Ahmet Okan Uzun, Ceyhan Türkkan, Ahmet İlker Tekkeşin, Ömer Kozan
BACKGROUND: Electrical phenomenon and remote myocardial ischemia are the main factors of ST segment depression in inferior leads in acute anterior myocardial infarction (AAMI). We investigated the prognostic value of the sum of ST segment depression amplitudes in inferior leads in patients with first AAMI treated with primary percutaneous coronary intervention. (PPCI). METHODS: In this prospective analysis, we evaluated the in-hospital prognostic impact of the sum of ST segment depression in inferior leads on 206 patients with first AAMI...
December 12, 2017: Journal of Electrocardiology
https://www.readbyqxmd.com/read/29273233/eligibility-of-cardiac-resynchronization-therapy-patients-for-subcutaneous-implantable-cardioverter-defibrillators
#15
Ghassan Moubarak, Pierre Maison-Blanche, Olivier Thomas
The eligibility for subcutaneous implantable cardioverter-defibrillators (S-ICD) was assessed among patients already implanted with cardiac resynchronization therapy (CRT). We included 20 patients (15 men, age 73±10years, LVEF 35±10%). Seventeen (85%) patients were eligible for S-ICDs: 11 (55%) patients on only 1 vector and 6 (30%) patients on 2 or 3 vectors. Patients who were eligible on 2-3 vectors had narrower paced QRS than patients who were not eligible or were eligible on only one vector (133±18ms vs 167±17ms, p=0...
December 8, 2017: Journal of Electrocardiology
https://www.readbyqxmd.com/read/29275955/inter-and-intra-observer-variability-of-visual-fragmented-qrs-scoring-in-ischemic-and-non-ischemic-cardiomyopathy
#16
Bert Vandenberk, Tomas Robyns, Griet Goovaerts, Mathias Claeys, Frederik Helsen, Sofie Van Soest, Christophe Garweg, Joris Ector, Sabine Van Huffel, Rik Willems
BACKGROUND: Fragmented QRS (fQRS) on a 12-lead ECG has been linked with adverse outcome. However, the visual scoring of ECGs is prone to inter- and intra-observer variability. METHODS: Five observers, two experienced and three novel, assessed fQRS in 712 digital ECGs, 100 were re-evaluated to assess intra-observer variability. Fleiss and Cohen's Kappa were calculated and compared between subgroups. RESULTS: The inter-observer variability for assessing fQRS in all leads combined was substantial with a Kappa of 0...
December 7, 2017: Journal of Electrocardiology
https://www.readbyqxmd.com/read/29263012/sinus-node-dysfunction-masquerading-as-complete-atrioventricular-block-in-the-setting-of-atrial-parasystole-after-heart-transplantation
#17
Sudheer R Gorla, Kishore R Raja, Mary C Sokoloski, Sethuraman Swaminathan
Heart transplantation is the gold standard for treatment of end stage heart failure. Atrial parasystole (AP), defined as the presence of an additional dissociated atrial pacemaker on a surface electrocardiogram, has been described to be seen after heart transplantation using biatrial surgical technique. AP may pose a challenge in diagnosing underlying rhythm disturbances in these patients. Here, we report a rare phenomenon of junctional escape rhythm with sinus node dysfunction, mimicking as complete atrioventricular block due to the presence of an AP, in a heart transplant recipient...
December 7, 2017: Journal of Electrocardiology
https://www.readbyqxmd.com/read/29274899/repolarization-in-perfused-myocardium-predicts-reperfusion-ventricular-tachyarrhythmias
#18
Olesya G Bernikova, Ksenia A Sedova, Natalia V Arteyeva, Aleksey O Ovechkin, Sergey N Kharin, Dmitry N Shmakov, Jan E Azarov
BACKGROUND: Aim of the study was to find out which myocardial repolarization parameters predict reperfusion ventricular tachycardia and fibrillation (VT/VF) and determine how these parameters express in ECG. METHODS: Coronary occlusion and reperfusion (30/30min) was induced in 24 cats. Local activation and end of repolarization times (RT) were measured in 88 intramyocardial leads. Computer simulations of precordial electrograms were performed. RESULTS: Reperfusion VT/VF developed in 10 animals...
December 6, 2017: Journal of Electrocardiology
https://www.readbyqxmd.com/read/29273234/body-surface-activation-mapping-of-electrical-dyssynchrony-in-cardiac-resynchronization-therapy-patients-potential-for-optimization
#19
Alan J Bank, Ryan M Gage, Antonia E Curtin, Kevin V Burns, Jeffrey M Gillberg, Subham Ghosh
BACKGROUND: Electrical synchronization is likely improved by cardiac resynchronization therapy (CRT), but is difficult to quantify with 12-lead ECG. We aimed to quantify changes in electrical synchrony and potential for optimization with CRT using a body-surface activation mapping (BSAM) system. METHODS: Standard deviation of activation times (SDAT) was calculated in 94 patients using BSAM at baseline CRT (CRTbl), native, and different CRT configurations. RESULTS: SDAT decreased 20% from native to CRTbl (p<0...
December 6, 2017: Journal of Electrocardiology
https://www.readbyqxmd.com/read/29287718/noninvasive-clues-for-diagnosing-ventricular-tachycardia-mechanism
#20
REVIEW
Andres Enriquez, Michael Riley, Francis Marchlinski
The electrophysiologic mechanisms responsible for the initiation and maintenance of ventricular tachycardia (VT) include enhanced automaticity, triggered activity and reentry. Differentiating between these three mechanisms can be challenging for the clinician and usually requires an invasive electrophysiology study. Establishing the underlying VT mechanism in a particular patient is helpful to define the optimal therapeutic approach, including the selection of pharmacologic agents or delineation of an ablation strategy...
November 21, 2017: Journal of Electrocardiology
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