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https://www.readbyqxmd.com/read/28100348/-right-coronary-artery-spasm-induced-acute-inferior-wall-myocardial-infarction-complicating-electrical-storm-a-case-report
#1
J Liang, Y J Zhou, H Y Han
No abstract text is available yet for this article.
January 25, 2017: Zhonghua Xin Xue Guan Bing za Zhi
https://www.readbyqxmd.com/read/28069274/extended-bipolar-left-ventricular-pacing-as-a-possible-therapy-for-late-electrical-storm-induced-by-cardiac-resynchronization-therapy
#2
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/28031851/a-good-excuse-for-skipping-the-test-electrical-storm-in-a-teenager
#3
Patrícia Rodrigues, António Pinheiro-Vieira, Marília Loureiro, Sílvia Álvares, Diana Anjo, Carla Roque, Maria João Sousa, Severo Torres
We describe the case of a teenager with a structurally normal heart that presented with torsades de pointes and cardiac arrest. He had a history of epilepsy in childhood, mild cognitive impairment and cognitive visual dysfunction. The baseline electrocardiogram had prominent J waves and a marked early repolarization pattern in all the leads, with normal QT interval. We discuss the differential diagnosis for this interesting case, as well as the patient's management.
December 2016: Oxford Medical Case Reports
https://www.readbyqxmd.com/read/28024555/innovative-approaches-to-arrhythmic-storm-the-growing-role-of-interventional-procedures
#4
REVIEW
Lena Rivard, Jason Andrade
Arrhythmic or electrical storm (AES) is a clinical condition characterized by 3 or more sustained ventricular arrhythmia episodes leading to appropriate device therapy in a 24-hour period and is associated with very high mortality. The clinical presentation is dramatic, and the management remains challenging. Although pharmacologic treatment and sedation are still part of the initial treatment, newer approaches that include ablation (endocardial, epicardial, or alternative procedures), sympathetic blockade (pharmacologic or by interventional sympathetic denervation), and mechanical hemodynamic support are used increasingly in this setting...
January 2017: Canadian Journal of Cardiology
https://www.readbyqxmd.com/read/28019045/autonomic-modulation-for-the-treatment-of-ventricular-arrhythmias-therapeutic-use-of-percutaneous-stellate-ganglion-blocks
#5
Marat Fudim, Richard Boortz-Marx, Chetan B Patel, Albert Y Sun, Jonathan P Piccini
Ventricular tachycardia (VT), ventricular fibrillation (VF) and electrical storm are commonly encountered emergency conditions in cardiac and surgical intensive care units. In most cases, recurrent ventricular arrhythmias or electrical storm are associated with a heightened sympathetic tone. These arrhythmias can be difficult to treat and may be refractory to beta-blockade, antiarrhythmic therapy, sedation, and mechanical hemodynamic support. While monomorphic ventricular tachycardia and PVC-triggered polymorphic ventricular tachycardia may sometimes be amenable to successful ablation, some patients may be too critically ill to make such an approach feasible...
December 26, 2016: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/28012204/thorax-percutaneous-approach-for-epicardial-ventricular-ablation-in-a-patient-with-electrical-storm
#6
Gaetano Barbato, Valeria Carinci, Sergio Fortiparri, Piercamillo Pavesi, Francesco Pergolini, Giuseppe DI Pasquale
Subxiphoid puncture is considered the standard approach for epicardial ablation of ventricular arrhythmia but in some cases this access is impracticable due to the patient's anatomy. We describe the case of a patient with electrical storm and abnormal subdiaframmatic anatomy that precluded the usual subxiphoid approach. In this patient the pericardial space was gained through a direct thorax puncture at the fifth intercostals space close to the mammary line. The tools and technique utilized in this case were similar to what is usually used for traditional subxiphoid puncture...
December 24, 2016: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/28007361/a-perfect-storm-tyrosine-kinase-inhibitor-associated-polymorphic-ventricular-tachycardia
#7
Alexander Beyer, Beejal Ganti, Allen Majkrzak, Nik Theyyunni
BACKGROUND: Oral tyrosine kinase inhibitors (TKIs) are becoming increasingly common in oncology practice due to ease of administration and patient preference. This class of medications is relatively unknown to emergency physicians. CASE REPORT: Here we present a case of electrical storm (ES) thought to be associated with ibrutinib, a TKI. The ES was unabated despite antidysrhythmic therapy and electrical cardioversion, and was treated with supportive care, which eventually included the use of extracorporeal membrane oxygenation...
December 19, 2016: Journal of Emergency Medicine
https://www.readbyqxmd.com/read/27932426/extracorporeal-membrane-oxygenation-for-hemodynamic-support-of-ventricular-tachycardia-ablation
#8
Francesca Baratto, Federico Pappalardo, Teresa Oloriz, Caterina Bisceglia, Pasquale Vergara, John Silberbauer, Nicolò Albanese, Manuela Cireddu, Giuseppe D'Angelo, Ambra Licia Di Prima, Fabrizio Monaco, Gabriele Paglino, Andrea Radinovic, Damiano Regazzoli, Simona Silvetti, Nicola Trevisi, Alberto Zangrillo, Paolo Della Bella
BACKGROUND: We report the experience in a cohort of consecutive patients receiving extracorporeal membrane oxygenation during catheter ablation of unstable ventricular tachycardia (VT) at our center. METHODS AND RESULTS: From 2010 to 2015, extracorporeal membrane oxygenation was initiated in 64 patients (average age: 63±15 years; left ventricular ejection fraction in 27±9%; cardiogenic shock in 23%, and electrical storm in 62% of patients) undergoing 74 unstable VT catheter ablation procedures...
December 2016: Circulation. Arrhythmia and Electrophysiology
https://www.readbyqxmd.com/read/27885616/phytoplankton-dynamics-of-a-subtropical-reservoir-controlled-by-the-complex-interplay-among-hydrological-abiotic-and-biotic-variables
#9
Yi-Ming Kuo, Jiunn-Tzong Wu
This study was conducted to identify the key factors related to the spatiotemporal variations in phytoplankton abundance in a subtropical reservoir from 2006 to 2010 and to assist in developing strategies for water quality management. Dynamic factor analysis (DFA), a dimension-reduction technique, was used to identify interactions between explanatory variables (i.e., environmental variables) and abundance (biovolume) of predominant phytoplankton classes. The optimal DFA model significantly described the dynamic changes in abundances of predominant phytoplankton groups (including dinoflagellates, diatoms, and green algae) at five monitoring sites...
December 2016: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/27867801/ram-scb-simulations-of-electron-transport-and-plasma-wave-scattering-during-the-october-2012-double-dip-storm
#10
V K Jordanova, W Tu, Y Chen, S K Morley, A-D Panaitescu, G D Reeves, C A Kletzing
Mechanisms for electron injection, trapping, and loss in the near-Earth space environment are investigated during the October 2012 "double-dip" storm using our ring current-atmosphere interactions model with self-consistent magnetic field (RAM-SCB). Pitch angle and energy scattering are included for the first time in RAM-SCB using L and magnetic local time (MLT)-dependent event-specific chorus wave models inferred from NOAA Polar-orbiting Operational Environmental Satellites (POES) and Van Allen Probes Electric and Magnetic Field Instrument Suite and Integrated Science observations...
September 2016: Journal of Geophysical Research. Space Physics
https://www.readbyqxmd.com/read/27833686/first-report-of-survival-in-refractory-ventricular-fibrillation-after-dual-axis-defibrillation-and-esmolol-administration
#11
Kevin M Boehm, Daniel C Keyes, Laura E Mader, J Michelle Moccia
There is a subset of patients who suffer a witnessed ventricular fibrillation (VF) arrest and despite receiving reasonable care with medications (epinephrine and amiodarone) and multiple defibrillations (3+ attempts at 200 joules of biphasic current) remain in refractory VF (RVF), also known as electrical storm. The mortality for these patients is as high as 97%. We present the case of a patient who, with a novel approach, survived RVF to outpatient follow up.
November 2016: Western Journal of Emergency Medicine
https://www.readbyqxmd.com/read/27751294/electrical-storm-in-dilated-cardiomyopathy-treated-using-epicardial-radiofrequency-ablation-as-a-first-line-therapy
#12
Massimiliano Faustino, Tullio Agricola, Borejda Xyheri, Enrico Di Girolamo, Luigi Leonzio, Carmine Pizzi
We report a patient with non-ischemic dilated cardiomyopathy and low left ventricular systolic function (28%) presenting with an electrical storm originated in epicardial scar and ablated by radiofrequency. This case report suggests that a strategy of epicardial catheter ablation is reasonable for the patient presenting with electrical storm related to structural disease with a low left ventricular ejection fraction.
September 2016: Indian Heart Journal
https://www.readbyqxmd.com/read/27687334/heat-wave-a-trigger-of-electrical-storm-in-a-patient-with-brugada-syndrome
#13
Isabel Molina Borao, Naiara Calvo Galiano, Javier Urmeneta Ulloa, Elena Rivero Fernández, Teresa Olóriz Sanjuan, Antonio Asso Abadía
No abstract text is available yet for this article.
December 2016: Revista Española de Cardiología
https://www.readbyqxmd.com/read/27670627/simultaneous-noninvasive-recording-of-skin-sympathetic-nerve-activity-and-electrocardiogram
#14
Anisiia Doytchinova, Jonathan L Hassel, Yuan Yuan, Hongbo Lin, Dechun Yin, David Adams, Susan Straka, Keith Wright, Kimberly Smith, David Wagner, Changyu Shen, Vicenta Salanova, Chad Meshberger, Lan S Chen, John C Kincaid, Arthur C Coffey, Gang Wu, Yan Li, Richard J Kovacs, Thomas H Everett, Ronald Victor, Yong-Mei Cha, Shien-Fong Lin, Peng-Sheng Chen
BACKGROUND: Sympathetic nerve activity is important to cardiac arrhythmogenesis. OBJECTIVE: The purpose of this study was to develop a method for simultaneous noninvasive recording of skin sympathetic nerve activity (SKNA) and electrocardiogram (ECG) using conventional ECG electrodes. This method (neuECG) can be used to adequately estimate sympathetic tone. METHODS: We recorded neuECG signals from the skin of 56 human subjects. The signals were low-pass filtered to show the ECG and high-pass filtered to show nerve activity...
January 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/27646458/combined-right-ventricular-outflow-tract-epicardial-and-endocardial-late-potential-ablation-for-treatment-of-brugada-storm-a-case-report-and-review-of-the-literature
#15
Sandeep A Saha, Kousik Krishnan, Christopher Madias, Richard G Trohman
A 34-year-old man with Brugada syndrome (BrS) presented with electrical storm, manifested as multiple appropriate shocks from his implantable cardioverter-defibrillator over a period of 7 hours. He had not tolerated prior treatment with quinidine, and had self-discontinued cilostazol citing persistent palpitations. After stabilization with intravenous isoproterenol, an electrophysiology study was performed but no spontaneous or induced ventricular ectopic beats were identified. A three-dimensional (3D) endocardial electro-anatomic map of the right ventricular outflow tract (RVOT), pulmonic valve, and pulmonary artery, as well as a 3D epicardial map of the RVOT, were created...
December 2016: Cardiology and Therapy
https://www.readbyqxmd.com/read/27635070/conversion-to-purkinje-related-monomorphic-ventricular-tachycardia-after-ablation-of-ventricular-fibrillation-in-ischemic-heart-disease
#16
Keita Masuda, Akihiko Nogami, Kenji Kuroki, Miyako Igarashi, Yukio Sekiguchi, Yuki Komatsu, Shinya Kowase, Kenji Kurosaki, Shuzo Nishihara, Koichiro Niwa, Taketsugu Tsuchiya, Masayuki Igawa, Kazutaka Aonuma
BACKGROUND: Catheter ablation is an effective therapy for ventricular fibrillation (VF) arising from the Purkinje system in ischemic heart disease. However, some patients experience newly emergent monomorphic ventricular tachycardia (VT) after the ablation of VF. We evaluated the prevalence and mechanism of monomorphic VT after VF ablation. METHODS AND RESULTS: Twenty-one consecutive patients with primary VF because of ischemic heart disease who underwent catheter ablation were retrospectively analyzed...
September 2016: Circulation. Arrhythmia and Electrophysiology
https://www.readbyqxmd.com/read/27618484/imaging-hydrological-processes-in-headwater-riparian-seeps-with-time-lapse-electrical-resistivity
#17
Mark R Williams, Anthony R Buda, Kamini Singha, Gordon J Folmar, Herschel A Elliott, John P Schmidt
Delineating hydrologic and pedogenic factors influencing groundwater flow in riparian zones is central in understanding pathways of water and nutrient transport. In this study, we combined two-dimensional time-lapse electrical resistivity imaging (ERI) (depth of investigation approximately 2 m) with hydrometric monitoring to examine hydrological processes in the riparian area of FD-36, a small (0.4 km(2) ) agricultural headwater basin in the Valley and Ridge region of east-central Pennsylvania. We selected two contrasting study sites, including a seep with groundwater discharge and an adjacent area lacking such seepage...
September 12, 2016: Ground Water
https://www.readbyqxmd.com/read/27581243/-updated-esc-guideline-innovations-for-the-treatment-of-ventricular-arrhythmias-and-recommendations-for-prevention-of-sudden-cardiac-death
#18
L Eckardt, T Deneke
The 2015 European Society of Cardiology Guidelines for the management of patients with ventricular arrhythmias and the prevention of sudden cardiac death is an update of the former 2006 European/American guidelines. This new consensus document gives a detailed overview on prevention and therapy of ventricular arrhythmias and sudden cardiac death. This includes detailed discussion of channelopathies and various cardiomyopathies. Gaps in evidence are identified and also discussed. DNA analysis and postmortem assessment in sudden cardiac death victims is for the first time part of these new recommendations...
September 2016: Herzschrittmachertherapie & Elektrophysiologie
https://www.readbyqxmd.com/read/27510622/potassium-channels-in-the-cx43-gap-junction-perinexus-modulate-ephaptic-coupling-an-experimental-and-modeling-study
#19
Rengasayee Veeraraghavan, Joyce Lin, James P Keener, Robert Gourdie, Steven Poelzing
It was recently demonstrated that cardiac sodium channels (Nav1.5) localized at the perinexus, an intercalated disc (ID) nanodomain associated with gap junctions (GJ), may contribute to electrical coupling between cardiac myocytes via an ephaptic mechanism. Impairment of ephaptic coupling by acute interstitial edema (AIE)-induced swelling of the perinexus was associated with arrhythmogenic, anisotropic conduction slowing. Given that Kir2.1 has also recently been reported to localize at intercalated discs, we hypothesized that Kir2...
October 2016: Pflügers Archiv: European Journal of Physiology
https://www.readbyqxmd.com/read/27479203/acute-outcome-of-treating-patients-admitted-with-electrical-storm-in-a-tertiary-care-centre
#20
Mukund A Prabhu, Narayanan Namboodiri, Srinivas Prasad Bv, S P Abhilash, Anees Thajudeen, Kumar V K Ajith
BACKGROUND: Electrical storm (ES) is a life threatening emergency. There is little data available regarding acute outcome of ES. AIMS: The study aimed to analyze the acute outcome of ES, various treatment modalities used, and the factors associated with mortality. METHODS: This is a retrospective observational study involving patients admitted with ES at our centre between 1/1/2007 and 31/12/2013. RESULTS: 41 patients (mean age 54...
November 2015: Indian Pacing and Electrophysiology Journal
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