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Journal of Electrocardiology

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https://www.readbyqxmd.com/read/28109524/torsades-de-pointes-with-high-dose-loperamide
#1
Patrick M Kozak, Amanda K Harris, John A McPherson, Dan M Roden
CASE: A 41year-old male presented with torsades de pointes. The patient was taking over 100mg of loperamide per day to self-medicate for chronic pain. Coronary angiography, cardiac magnetic resonance imaging, and genetic testing were negative for pre-disposing ischemia, cardiomyopathy, or genetic variant respectively. CONCLUSIONS: Patients without predisposing genetic or cardiac abnormalities are at risk of life-threatening QTc prolongation and torsades with use of high-dose loperamide...
January 16, 2017: Journal of Electrocardiology
https://www.readbyqxmd.com/read/28109525/wire-and-needle-potentials-facilitating-transseptal-puncture
#2
Konstantin M Heinroth, Thomas Hartkopf, Alexander Plehn, Joachim Wilhelm, Susanne Unverzagt, Stefan Frantz, Alexander Schirdewan
BACKGROUND: Transseptal puncture for left heart interventions became a routine procedure guided by fluoroscopy and echocardiography. The use of intracardiac potentials derived from the sheath-transseptal-needle/guidewire-combination may provide helpful information to increase safety of this procedure. METHODS AND RESULTS: We recorded the intracardiac potentials from the sheath-transseptal-needle/guidewire-combination during the transseptal puncture procedure in 31 consecutive patients (mean age 67...
January 15, 2017: Journal of Electrocardiology
https://www.readbyqxmd.com/read/28108014/electrocardiographic-spatial-loops-indicate-organization-of-atrial-fibrillation-minutes-before-ablation-related-transitions-to-atrial-tachycardia
#3
Tina Baykaner, Rishi Trikha, Junaid A B Zaman, David E Krummen, Paul J Wang, Sanjiv M Narayan
BACKGROUND: During ablation for atrial fibrillation (AF), it is challenging to anticipate transitions to organized tachycardia (AT). Defining indices of this transition may help to understand fibrillatory conduction and help track therapy. OBJECTIVE: To determine the timescale over which atrial fibrillation (AF) organizes en route to atrial tachycardia (AT) using the ECG referenced to intracardiac electrograms. METHODS: In 17 AF patients at ablation (58...
January 15, 2017: Journal of Electrocardiology
https://www.readbyqxmd.com/read/28093191/re-galen-wagner-another-perspective
#4
LETTER
Charles Maynard
No abstract text is available yet for this article.
January 12, 2017: Journal of Electrocardiology
https://www.readbyqxmd.com/read/28081851/a-new-use-for-maximum-deflection-index-detection-of-intraventricular-dyssynchrony
#5
Durmuş Yıldıray Şahin, Onur Kaypaklı, Gökhan Gözübüyük, Mevlüt Koç
AIM: CRT has been shown to be very beneficial for patients with reduced LVEF, symptomatic HF and increased QRS width. But many patients do not benefit from CRT. Maximum deflection index (MDI) is a quantitive measure of the rapidity of depolarization of the myocardium. In previous studies, high MDI was found to indicate epicardial origin of ventricular tachycardia. We aimed to detect the relationship between echocardiographic intraventricular dyssynchrony and MDI. METHODS: We included 144 patients with HF, QRS≥120ms, LBBB, NYHA II-IV, LVEF<35% and scheduled for CRT (90 male, 54 female; mean age 65...
December 30, 2016: Journal of Electrocardiology
https://www.readbyqxmd.com/read/28069274/extended-bipolar-left-ventricular-pacing-as-a-possible-therapy-for-late-electrical-storm-induced-by-cardiac-resynchronization-therapy
#6
Dimitrios Asvestas, Richard Balasubramaniam, Mark Sopher, John Paisey, Girish G Babu
Although cardiac resynchronization therapy (CRT) has become a well-established treatment option for patients with drug-refractory severe systolic heart failure, there has been some evidence of adverse proarrhythmic events. We report a case of a patient with ischemic cardiomyopathy who underwent CRT with a defibrillator for primary prevention of sudden cardiac death. Two years after the implantation, the patient presented with electrical storm, which was completely terminated by modifying the left ventricular (LV) pacing configuration from true to extended bipolar LV pacing...
December 30, 2016: Journal of Electrocardiology
https://www.readbyqxmd.com/read/28081852/brugada-sign-in-a-patient-with-hyperkalemia-due-to-rhabdomyolysis-in-hypothermia
#7
Kristóf Tomcsányi, János Tomcsányi
The Brugada sign may appear as an indication of severe hyperkalemia. This phenomena has recently been called as the "Brugada phenocopy". Hyperthermia and hypothermia may lead to rhabdomyolysis. Rhabdomyolysis is a syndrome characterized by muscle necrosis and the release of intracellular muscle constituents into the circulation. We present a case where rhabdomyolysis-related delayed hyperkalemia showed Brugada sign on the ECG mimicking ventricular tachycardia.
December 29, 2016: Journal of Electrocardiology
https://www.readbyqxmd.com/read/28073434/two-to-one-crtd-pacing-when-the-t-wave-and-the-p-wave-interact
#8
Hilmi Alnsasra, Moti Haim, Aref Alnsasra, Yuval Konstantino
We presented a unique phenomenon of 2:1 cardiac resynchronization therapy pacing due to T wave oversensing. Ultimately, by utilizing a unique feature of integrated bipolar sensing, we succeeded to eliminate the T wave oversensing signals, and restore 1:1 CRTD pacing. Importantly, this feature enabled us to overcome the T wave oversensing issue, without the need to decrease the ventricular sensitivity, which could potentially interfere with ventricular arrhythmia detection and appropriate shock delivery when required...
December 29, 2016: Journal of Electrocardiology
https://www.readbyqxmd.com/read/28069275/optimal-configuration-of-adhesive-ecg-patches-suitable-for-long-term-monitoring-of-a-vectorcardiogram
#9
Muammar M Kabir, Erick A Perez-Alday, Jason Thomas, Golriz Sedaghat, Larisa G Tereshchenko
The purpose of this study was to develop optimal configuration of adhesive ECG patches placement on the torso, which would provide the best agreement with the Frank orthogonal ECGs. Ten seconds of orthogonal ECG followed by 3-5min of ECGs using patches at 5 different locations simultaneously on the torso were recorded in 50 participants at rest in sitting position. Median beat was generated for each ECG and 3 patch ECGs that best correlate with orthogonal ECGs were selected for each participant. For agreement analysis, spatial QRS-T angle, spatial QRS and T vector characteristics, spatial ventricular gradient, roundness, thickness and planarity of vectorcardiographic (VCG) loops were measured...
December 29, 2016: Journal of Electrocardiology
https://www.readbyqxmd.com/read/28069273/does-antiarrhythmic-drugs-premedication-improve-electrical-cardioversion-success-in-persistent-atrial-fibrillation
#10
Elisabetta Toso, Mario Iannaccone, Domenico Caponi, Francesco Rotondi, Antonio Santoro, Cristina Gallo, Marco Scaglione, Fiorenzo Gaita
AIMS: Aim of this study is to evaluate the impact of antiarrhythmic drugs (AADs) administration for at least one month before ECV on the acute and long term success rate of the procedure. METHODS: 1313 consecutive persistent AF patients were enrolled in 3 different centers (Turin, Asti and Avellino): 692 patients received AADs before and after ECV (group A), 621 patients were treated only after the procedure, at discharge (group B). Primary end point was the restoration and maintenance of sinus rhythm acutely and at a long-term follow up...
December 29, 2016: Journal of Electrocardiology
https://www.readbyqxmd.com/read/27979413/a-forgotten-cause-of-wide-complex-tachycardia
#11
Vivek Reddy, Yaoyun Sarah Shen, Shanker Kundumadam, Pradeep Kathi, Mazhar H Khan
Wide complex tachycardia secondary to an acute overdose from TCA's is a well-documented phenomenon. In this case we present a wide complex tachycardia after clear documentation of no acute overdose, which responded to standard treatment for TCA toxicity. These findings combined with chronic electrocardiographic abnormalities were suggestive of an acute on chronic TCA toxicity.
November 28, 2016: Journal of Electrocardiology
https://www.readbyqxmd.com/read/27919411/sudden-death-risk-stratification-beyond-the-ejection-fraction-based-approach
#12
LETTER
Konstantinos A Gatzoulis, Christos-Konstantinos Antoniou, Dimitrios Tousoulis
No abstract text is available yet for this article.
November 27, 2016: Journal of Electrocardiology
https://www.readbyqxmd.com/read/28012557/exercise-testing-for-long-term-follow-up-in-arrhythmogenic-right-ventricular-cardiomyopathy
#13
Daniel Karlsson, Jan Engvall, Agota Alfoldine Ando, Meriam Åström Aneq
OBJECTIVES: We investigated arrhythmia, electrocardiography and physical work capacity (PWC) in the follow-up of ARVC. DESIGN: Twenty-three patients (13 men; age 41±12years) fulfilling diagnostic criteria were re-investigated after at least five years. RESULTS: Ventricular arrhythmia during exercise testing (ET) was present in 14 patients (61%) and showed variation between examinations. In eleven (48%), complex ventricular ectopic activity was observed at peak exercise or immediately thereafter...
October 28, 2016: Journal of Electrocardiology
https://www.readbyqxmd.com/read/27916321/exercise-induced-quantitative-microvolt-t-wave-alternans-in-hypertrophic-cardiomyopathy
#14
Murillo de Oliveira Antunes, Nelson Samesima, Horacio Gomes Pereira Filho, Afonso Yoshikiro Matsumoto, Richard L Verrier, Carlos Alberto Pastore, Edmundo Arteaga-Fernández, Charles Mady
BACKGROUND/PURPOSE: Patients with hypertrophic cardiomyopathy (HCM) have elevated risk for sudden cardiac death (SCD). Our study aimed to quantitatively characterize microvolt T-wave alternans (TWA), a potential arrhythmia risk stratification tool, in this HCM patient population. METHODS: TWA was analyzed with the quantitative modified moving average (MMA) in 132 HCM patients undergoing treadmill exercise testing, grouped according to Maron score risk factors as high-risk (H-Risk, n=67,), or low-risk (L-Risk, n=65, without these risk factors)...
October 28, 2016: Journal of Electrocardiology
https://www.readbyqxmd.com/read/28041584/hemodynamics-of-his-bundle-pacing
#15
REVIEW
Luca Alberti, Paolo Pieragnoli, Giuseppe Ricciardi, Luigi Padeletti
This review will focus on the feasibility of long term His bundle pacing and its effects on left ventricle (LV) hemodynamics. Compared with right ventricular pacing, His bundle pacing results in a more physiological electro-mechanical activation that contributes to preserve LV function. Moreover some studies showed a similar effect to biventricular pacing in patients with heart failure and left bundle branch block. Recent observations indicate that His bundle pacing should be considered as an optimal site to pace right ventricle in patients who are candidates for cardiac resynchronization therapy...
January 2017: Journal of Electrocardiology
https://www.readbyqxmd.com/read/28010929/dr-galen-wagner-1939-2016-as-an-academic-writer-an-overview-of-his-peer-reviewed-scientific-publications
#16
REVIEW
Olle Pahlm, Cees A Swenne, Sumche Man, Yama Fakhri, Brett D Atwater, Ljuba Bacharova, Lia Bang, Yochai Birnbaum, Esben Carlsson, Peter Clemmensen, Henrik Engblom, Leonard S Gettes, Peer Grande, Nina Hakacova, Lene Holmvang, Birgit Jurlander, Zak Loring, Ulrika Pahlm, Jonas Pettersson, Michael Ringborn, Niels Risum, Maria Sejersten-Ripa, Leif Sörnmo, David G Strauss, Robbert Zusterzeel, Stafford G Warren
No abstract text is available yet for this article.
January 2017: Journal of Electrocardiology
https://www.readbyqxmd.com/read/27939927/special-issue-of-the-journal-of-electrocardiology-to-commemorate-dr-galen-wagner-1939-2016
#17
EDITORIAL
Brett D Atwater, Ljuba Bacharova, Olle Pahlm, Cees A Swenne
No abstract text is available yet for this article.
January 2017: Journal of Electrocardiology
https://www.readbyqxmd.com/read/27939926/galen-wagner-m-d-ph-d-1939-2016-as-international-mentor-of-young-investigators-in-electrocardiology
#18
REVIEW
Cees A Swenne, Olle Pahlm, Brett D Atwater, Ljuba Bacharova
This paper describes a substantial part of the international mentoring network of students and young investigators in electrocardiology that developed around Dr. Galen Wagner (1939-2016), including many experiences of his mentees and co-mentors. The paper is meant to stimulate thinking about international mentoring as a means to achieve important learning experiences and personal development of young investigators, to intensify international scientific cooperation, and to stimulate scientific production.
January 2017: Journal of Electrocardiology
https://www.readbyqxmd.com/read/27914634/position-of-st-deviation-measurements-relative-to-the-j-point-impact-for-ischemia-detection
#19
Sumche Man, C Cato Ter Haar, Marjolein C de Jongh, Arie C Maan, Martin J Schalij, Cees A Swenne
BACKGROUND: There is no consensus about the time instant relative to the J point where ST deviation has to be measured for detection of acute ischemia in the ECG. METHODS: We analyzed 53 ECGs, recorded preceding emergency catheterization of acute coronary syndrome patients with a completely occluded culprit artery (cases), and 88 control ECGs recorded in the cardiology outpatient clinic. ECG-amplitude measurements were made every 10 ms, between 20 ms before till 80 ms after the J point...
January 2017: Journal of Electrocardiology
https://www.readbyqxmd.com/read/27894598/the-research-practicum-and-international-research-interdisciplinary-school-iris-initiatives-in-memory-of-professor-galen-s-wagner-m-d-phd
#20
LETTER
Ljuba Bacharova, Samuel J Bell, Jonathan Lipton, Eric Eisenstein, Gulmira Kudaiberdieva, Marilyn Wagner, Ioana Mozos, Aleksandra Misak, Nina Hakacova
No abstract text is available yet for this article.
January 2017: Journal of Electrocardiology
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