Read by QxMD icon Read

electrical storm

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
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.
September 26, 2016: Revista Española de Cardiología
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. OBJECTIVES: (1) To develop a method for simultaneous noninvasive recording of skin sympathetic nerve activity (SKNA) and electrocardiogram (ECG) using conventional ECG electrodes. (2) This method (neuECG) can be used to adequately estimate the sympathetic tone. METHODS: We recorded neuECG signals from the skin in 56 human subjects. The signals were low pass filtered to show the ECG and high pass filtered to show nerve activity...
September 23, 2016: Heart Rhythm: the Official Journal of the Heart Rhythm Society
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...
September 19, 2016: Cardiology and Therapy
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
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
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
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
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
Francisca Tatiana Moreira Pereira, Eduardo Arrais Rocha, Marcelo de Paula Martins Monteiro, Neiberg de Alcantara Lima, Carlos Roberto Martins Rodrigues Sobrinho, Roberto da Justa Pires Neto
BACKGROUND: The outcome of Chagas disease patients after receiving implantable cardioverter defibrillator (ICD) is still controversial. OBJECTIVE: To compare clinical outcomes after ICD implantation in patients with chronic Chagas cardiomyopathy (CCC) and ischemic heart disease (IHD). METHODS: Prospective study of a population of 153 patients receiving ICD (65 with CCC and 88 with IHD). The devices were implanted between 2003 and 2011. Survival rates and event-free survival were compared...
August 2016: Arquivos Brasileiros de Cardiologia
Ahmed Karim Talib, Yoshiaki Yui, Takashi Kaneshiro, Yukio Sekiguchi, Akihiko Nogami, Kazutaka Aonuma
Placement of an implantable cardioverter-defibrillator (ICD) is the only powerful treatment modality for Brugada syndrome in patients presenting with ventricular fibrillation (VF). For those whose first presentation is an electrical storm, pharmacologic therapy is typically used to control VF followed by ICD implantation. We report an alternative approach whereby, before ICD implantation, emergency catheter ablation of the VF-triggering premature ventricular contraction (PVC) resulted in long-term VF-free survival...
June 2016: Journal of Arrhythmia
L I Li, Yuan-Li Zhou, Xue-Jing Zhang, Hua-Ting Wang
The present study reports a case of electrical storm occurring in a 43-year-old woman with dilated cardiomyopathy. The patient suffered from a cardiac electrical storm, with 98 episodes of ventricular tachycardia rapidly degenerating to ventricular fibrillation in hospital. The patient was converted with a total of 120 defibrillations. Recurrent ventricular tachycardia/fibrillation was initiated by premature ventricular beats. The patient did not respond to the use of amiodaronum. However, the administration of esmolol stabilized the patient's heart rhythm...
July 2016: Experimental and Therapeutic Medicine
S Aguiar Rosa, M Oliveira, B Valente, P Silva Cunha, L Almeida Morais, R Cruz Ferreira
No abstract text is available yet for this article.
June 23, 2016: Medicina Intensiva
Stéphane Boulé, Marc Sémichon, Laurence Guédon-Moreau, Élodie Drumez, Claude Kouakam, Christelle Marquié, François Brigadeau, Salem Kacet, Charlotte Potelle, William Escande, Zouheir Souissi, Dominique Lacroix, Alain Duhamel, Didier Klug
BACKGROUND: Little is known about the long-term outcomes of patients who receive an implantable cardioverter-defibrillator (ICD) for purely secondary prevention indications. AIMS: To assess the rates and predictors of appropriate therapies over a very long-term follow-up period in this population. METHODS: Between June 2003 and August 2006, 239 consecutive patients with structural left ventricular disease and a secondary prophylaxis indication for ICD therapy (survivors of life-threatening ventricular tachyarrhythmias) were prospectively enrolled...
June 21, 2016: Archives of Cardiovascular Diseases
Mukund A Prabhu, Srinivas B V Prasad, S P Abhilash, Anees Thajudeen, Balasubramoniam K R, Narayanan Namboodiri
PURPOSE: Left sympathetic cardiac denervation (LSCD) may be beneficial in treating electrical storm (ES) of varied aetiologies. The present study analyse the outcome and long term follow up of LSCD in treating ES. METHODS: This is a retrospective study of patients with ES who underwent LSCD. RESULTS: Nine patients (majority males (88.89 %), median age 52 years, IQR 50.5-56.5) underwent LSCD. Coronary artery disease was the commonest substrate (7 (77...
June 18, 2016: Journal of Interventional Cardiac Electrophysiology: An International Journal of Arrhythmias and Pacing
Masato Segawa, Koji Fukuda, Makoto Nakano, Masateru Kondo, Hiroyuki Satake, Michinori Hirano, Hiroaki Shimokawa
BACKGROUND: The time course and factors correlating with ventricular tachyarrhythmias (VTs) after introduction of corticosteroid therapy in patients with cardiac sarcoidosis remain to be elucidated. METHODS AND RESULTS: We examined 68 consecutive patients with cardiac sarcoidosis in the Tohoku University Hospital from October 1998 to September 2014 (age: 57±11 years old; male:female 18:50) and evaluated VTs after initiation of steroid therapy. VTs were defined as documented ventricular tachycardia or ventricular fibrillation lasting for more than 30 seconds or resulting in cardiovascular collapse, or appropriate implantable cardioverter defibrillator therapy...
June 2016: Circulation. Arrhythmia and Electrophysiology
Federico Guerra, Pietro Palmisano, Gabriele Dell'Era, Matteo Ziacchi, Ernesto Ammendola, Paolo Bonelli, Francesca Patani, Claudio Cupido, Chiara Devecchi, Michele Accogli, Eraldo Occhetta, Lucio Santangelo, Mauro Biffi, Giuseppe Boriani, Alessandro Capucci
BACKGROUND: Electrical storm (ES) is defined as 3 or more episodes of ventricular fibrillation (VF) or ventricular tachycardia (VT) within 24 hours and is associated with increased cardiac and all-cause mortality. OBJECTIVE: The purpose of this study was to test whether aggressive implantable cardioverter-defibrillator (ICD) programming can be associated with ES. METHODS: The OBSERVational registry On long-term outcome of ICD patients (OBSERVO-ICD) is a multicenter, retrospective registry enrolling all consecutive patients undergoing ICD implantation from 2010 to 2012 in 5 Italian high-volume arrhythmia centers...
October 2016: Heart Rhythm: the Official Journal of the Heart Rhythm Society
Bo Zhao, Zizhen Wu, Ulrich Müller
Cochlear hair cells convert sound-induced vibration into electrical signals. FAM65B mutations cause hearing loss by an unknown mechanism. Using biochemistry and stochastic optical reconstruction microscopy (STORM), we show here that Fam65b oligomers form a circumferential ring near the basal taper of the mechanically sensitive stereocilia of murine hair cells. Taperin, a second protein near the taper, forms a dense-core-like structure that is disrupted in the absence of Fam65b. Stereocilia of Fam65b-deficient murine hair cells start to develop, but mechanotransduction is affected and stereocilia deteriorate...
2016: ELife
Yuichi Hori, Shiro Nakahara, Sohtaro Mine, Naofumi Anjo, Akiko Fujii, Yoshihiko Ueda, Isao Taguchi
A 65-year-old man with non-ischemic cardiomyopathy, underwent an autopsy 2 months after the successful ablation of a sustained left ventricular (LV) summit ventricular tachycardia (VT). The patient died due to interstitial pneumonia from amiodarone use. The earliest activation sites of the VT were documented from both inside the anterior interventricular vein (AIV) and epicardial surface. The diameter of the AIV was 3-4 mm, and the radiofrequency (RF) lesion inside the AIV was a slight lesion due to high impedance with a high temperature...
May 13, 2016: Heart and Vessels
Michael O Rivett, Mark O Cuthbert, Richard Gamble, Lucy E Connon, Andrew Pearson, Martin G Shepley, John Davis
Dynamic impact to the water environment of deicing salt application at a major highway (motorway) interchange in the UK is quantitatively evaluated for two recent severe UK winters. The contaminant transport pathway studied allowed controls on dynamic highway runoff and storm-sewer discharge to a receiving stream and its subsequent leakage to an underlying sandstone aquifer, including possible contribution to long-term chloride increases in supply wells, to be evaluated. Logged stream electrical-conductivity (EC) to estimate chloride concentrations, stream flow, climate and motorway salt application data were used to assess salt fate...
September 15, 2016: Science of the Total Environment
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"