keyword
MENU ▼
Read by QxMD icon Read
search

ventricular arrhythmia

keyword
https://www.readbyqxmd.com/read/28734879/ventricular-arrhythmias-ablation-in-brugada-syndrome-current-and-future-directions
#1
Carlo Pappone, Josep Brugada
No abstract text is available yet for this article.
July 19, 2017: Revista Española de Cardiología
https://www.readbyqxmd.com/read/28734595/arrhythmias-after-left-ventricular-assist-device-implantation-incidence-and-management
#2
REVIEW
Anis J Kadado, Joseph G Akar, James P Hummel
The use of mechanical circulatory support has become an increasingly common practice in patients with heart failure, whether used as bridge to transplantation or as destination therapy. The last couple of decades has seen a drastic change in the functioning of the left ventricular assist devices (LVAD), changing from the first generation devices running on pulsatile flow to the current continuous flow devices. Atrial and ventricular arrhythmias are common among heart failure patients, and though the systematic circulation is well supported in patients on mechanical circulatory support, these arrhythmias can still be the cause of detrimental symptoms and lead to potentially fatal outcomes...
July 10, 2017: Trends in Cardiovascular Medicine
https://www.readbyqxmd.com/read/28732031/breast-tissue-ablation-with-irreversible-electroporation-in-rabbits-a-safety-and-feasibility-study
#3
Wenlong Zhang, Wanning Wang, Wei Chai, Xiaomei Luo, Jiannan Li, Jian Shi, Liqi Bi, Lizhi Niu
BACKGROUND AND AIM: Irreversible electroporation (IRE) was confirmed to control several solid tumors effectively in vivo. Our preclinical study aimed to assess the feasibility and safety of IRE in the breast of rabbit. METHODS: Thirty New Zealand white rabbits were randomly divided into 3 groups of 10 rabbits (control group, IRE group A, and B). Two mono-electrode needles were inserted into the breast tissue by percutaneous puncture. Electrocardiogram and vital signs were monitored before, during, and after ablation...
2017: PloS One
https://www.readbyqxmd.com/read/28732009/effects-of-local-cardiac-denervation-on-cardiac-innervation-and-ventricular-arrhythmia-after-chronic-myocardial-infarction
#4
Xudong Liu, Lin Sun, Jugang Chen, Yingying Jin, Qing Liu, Zhongnan Xia, Liang Wang, Jingjie Li
BACKGROUND: Modulation of the autonomic nervous system (ANS) has already been demonstrated to display antiarrhythmic effects in patients and animals with MI. In this study, we investigated whether local cardiac denervation has any beneficial effects on ventricular electrical stability and cardiac function in the chronic phase of MI. METHODS: Twenty-one anesthetized dogs were randomly assigned into the sham-operated, MI and MI-ablation groups, respectively. Four weeks after local cardiac denervation, LSG stimulation was used to induce VPCs and VAs...
2017: PloS One
https://www.readbyqxmd.com/read/28730712/slow-conduction-through-an-arc-of-block-a-basis-for-arrhythmia-formation-post-myocardial-infarction
#5
Eugene Patterson, Benjamin J Scherlag, Edward J Berbari, Ralph Lazzara
INTRODUCTION: The electrophysiologic basis for characteristic rate-dependent, constant-late-coupled (390+54 msec) premature ventricular beats (PVBs) present 4-5 days following coronary artery occlusion were examined in 108 anesthetized dogs. METHODS AND RESULTS: Fractionated/double potentials were observed in injured zone bipolar and composite electrograms at prolonged sinus cycle lengths (1296 ± 396 msec). At shorter cycle lengths, conduction of the delayed potential decremented, separating from the initial electrogram by a progressively prolonged isoelectric interval...
July 21, 2017: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/28729840/cardiac-subtype-specific-modeling-of-kv1-5-ion-channel-deficiency-using-human-pluripotent-stem-cells
#6
Maike Marczenke, Ilaria Piccini, Isabella Mengarelli, Jakob Fell, Albrecht Röpke, Guiscard Seebohm, Arie O Verkerk, Boris Greber
The ultrarapid delayed rectifier K(+) current (IKur), mediated by Kv1.5 channels, constitutes a key component of the atrial action potential. Functional mutations in the underlying KCNA5 gene have been shown to cause hereditary forms of atrial fibrillation (AF). Here, we combine targeted genetic engineering with cardiac subtype-specific differentiation of human induced pluripotent stem cells (hiPSCs) to explore the role of Kv1.5 in atrial hiPSC-cardiomyocytes. CRISPR/Cas9-mediated mutagenesis of integration-free hiPSCs was employed to generate a functional KCNA5 knockout...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28729659/identification-of-a-hybrid-myocardial-zone-in-the-mammalian-heart-after-birth
#7
Xueying Tian, Yan Li, Lingjuan He, Hui Zhang, Xiuzhen Huang, Qiaozhen Liu, Wenjuan Pu, Libo Zhang, Yi Li, Huan Zhao, Zhifu Wang, Jianhong Zhu, Yu Nie, Shengshou Hu, David Sedmera, Tao P Zhong, Ying Yu, Li Zhang, Yan Yan, Zengyong Qiao, Qing-Dong Wang, Sean M Wu, William T Pu, Robert H Anderson, Bin Zhou
Noncompaction cardiomyopathy is characterized by the presence of extensive trabeculations, which could lead to heart failure and malignant arrhythmias. How trabeculations resolve to form compact myocardium is poorly understood. Elucidation of this process is critical to understanding the pathophysiology of noncompaction disease. Here we use genetic lineage tracing to mark the Nppa(+) or Hey2(+) cardiomyocytes as trabecular and compact components of the ventricular wall. We find that Nppa(+) and Hey2(+) cardiomyocytes, respectively, from the endocardial and epicardial zones of the ventricular wall postnatally...
July 20, 2017: Nature Communications
https://www.readbyqxmd.com/read/28728742/a-clinical-score-model-to-predict-lethal-events-in-young-patients-%C3%A2-19-years-with-the-brugada-syndrome
#8
M Cecilia Gonzalez Corcia, Juan Sieira, Gudrun Pappaert, Carlo de Asmundis, Gian Battista Chierchia, Andrea Sarkozy, Pedro Brugada
Risk stratification in Brugada syndrome in young patients remains challenging. We investigated the clinical characteristics, prognosis, and risk in young patients with the Brugada syndrome. We studied 95 patients with the Brugada syndrome aged ≤19 years. The median age at diagnosis was 12.9 years. The clinical presentation was sudden cardiac death in 7% and syncope in 21%. The remaining 72% were asymptomatic at diagnosis. Electrical abnormalities were present in 36%, including spontaneous type I electrocardiogram (12%), sinus node dysfunction (9%), atrioventricular block (17%), intraventricular conduction delay (16%), and atrial arrhythmias (8%)...
June 15, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/28728073/sudden-perinatal-death-due-to-rupture-of-congenital-cardiac-diverticulum-pathological-findings-and-medico-legal-investigations-in-malpractice-charge
#9
Matteo Marchesi, Michele Boracchi, Guendalina Gentile, Francesca Maghin, Riccardo Zoja
Congenital diverticula of the left ventricle, very rare malformations, are determined by an abnormal embryonic development of the ventricular wall and can be isolated or associated to other cardiac anomalies. In most of the cases, these pathologies are not symptomatic and in some patients can be associated to ventricular arrhythmia, cardiac rupture with tamponade and sudden death. Authors are presenting the case of a sudden death in an 8-weeks-old newborn due to rupture of a cardiac congenital diverticulum of the left ventricle, discovered only at the moment of the autopsic examination...
July 12, 2017: Legal Medicine
https://www.readbyqxmd.com/read/28727256/localization-of-ventricular-arrhythmias-the-importance-of-evaluating-the-frontal-axis
#10
EDITORIAL
James E Ip
No abstract text is available yet for this article.
July 20, 2017: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/28727191/anterior-pericardial-access-to-facilitate-electrophysiology-study-and-catheter-ablation-of-ventricular-arrhythmias-a-single-tertiary-center-experience
#11
Ali R Keramati, Deeptankar DeMazumder, Satish Misra, Jonathan Chrispin, Fabrizio R Assis, Chava Raghuram, Swati Dey, Hugh Calkins, Harikrishna Tandri
INTRODUCTION: Epicardial ablation is becoming an important part of management in patients with ventricular tachycardia (VT). Posterior epicardial access via the Sosa or Needle-in-Needle (NIN) approach for epicardial VT ablation is considered to be the method of choice for most electrophysiologists. Anterior epicardial access as an alternative technique has recently been proposed, but there is limited data about its safety, efficacy and the rate of immediate complications. In this study, we report our experience with anterior epicardial access between 2009 and 2016...
July 20, 2017: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/28726654/the-safety-and-efficacy-of-amiodarone-and-carvedilol-combination-in-treatment-of-patients-with-severe-cardiac-rhythm-disorders
#12
E Tsetskhladze, I Khintibidze
Different arrhythmias are cause of sudden death in many patients with heart failure. Amiodarone is usually used for prevent this arrhythmias, but it is not drug of choice for treatment the patients with heart failure. We retrospectively analyzed 142 patients with moderate and severe heart failure and history of myocardial infarction. These patients have received amiodarone, carvedilol or combination of these two medications together with standard therapy. In our retrospective analysis, the combination therapy with Amiodarone and Carvedilol had highly significant decrease arrhythmic death compare with carvedilol and amiodarone groups...
June 2017: Georgian Medical News
https://www.readbyqxmd.com/read/28726291/high-dose-humanin-analogue-applied-during-ischemia-exerts-cardioprotection-against-ischemia-reperfusion-injury-by-reducing-mitochondrial-dysfunction
#13
Savitree Thummasorn, Krekwit Shinlapawittayatorn, Siriporn C Chattipakorn, Nipon Chattipakorn
Although the gold standard treatment for acute myocardial infarction is reperfusion therapy, reperfusion itself can cause myocardial damage via induction of cardiac mitochondrial dysfunction. This can lead to increased myocardial infarct size, arrhythmias and left ventricular (LV) dysfunction. Recently, a newly discovered peptide, Humanin, has been shown to exert several beneficial effects including anti-oxidative and anti-apoptosis effects. We recently reported that a Humanin analogue (HNG, 84 μg/kg) given prior to cardiac ischemia exerted cardioprotection against I/R injury, but failed to do so when it was given after ischemia was induced...
July 20, 2017: Cardiovascular Therapeutics
https://www.readbyqxmd.com/read/28725037/bursting-dynamics-in-the-normal-and-failing-hearts
#14
Vladimir E Bondarenko, Andrey L Shilnikov
A failing heart differs from healthy hearts by an array of symptomatic characteristics, including impaired Ca(2+) transients, upregulation of Na(+)/Ca(2+) exchanger function, reduction of Ca(2+) uptake to sarcoplasmic reticulum, reduced K(+) currents, and increased propensity to arrhythmias. While significant efforts have been made in both experimental studies and model development to display the causes of heart failure, the full process of deterioration from a healthy to a failing heart yet remains deficiently understood...
July 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28721212/recent-advances-in-the-management-of-ventricular-tachyarrhythmias
#15
REVIEW
Syeda Atiqa Batul, Brian Olshansky, John D Fisher, Rakesh Gopinathannair
Ventricular arrhythmias are an important cause of cardiovascular morbidity and mortality, particularly in those with structural heart disease, inherited cardiomyopathies, and channelopathies. The goals of ventricular arrhythmia management include symptom relief, improving quality of life, reducing implantable cardioverter defibrillator shocks, preventing deterioration of left ventricular function, reducing risk of arrhythmic death, and potentially improving overall survival. Guideline-directed medical therapy and implantable cardioverter defibrillator implantation remain the mainstay of therapy to prevent sudden cardiac death in patients with ventricular arrhythmias in the setting of structural heart disease...
2017: F1000Research
https://www.readbyqxmd.com/read/28720014/the-impact-of-intrauterine-treatment-on-fetal-tachycardia-a-nationwide-survey-in-japan
#16
Keiko Ueda, Yasuki Maeno, Takekazu Miyoshi, Noboru Inamura, Motoyoshi Kawataki, Mio Taketazu, Masaki Nii, Akiko Hagiwara, Hitoshi Horigome, Makio Shozu, Wataru Shimizu, Satoshi Yasukochi, Hitoshi Yoda, Isao Shiraishi, Heima Sakaguchi, Shinji Katsuragi, Haruhiko Sago, Tomoaki Ikeda
OBJECTIVES: To investigate the clinical course of fetal tachycardia and analyze the impact of intrauterine treatment on the postnatal treatment and patient outcomes. STUDY DESIGN: This was a retrospective review of cases of fetal tachycardia that occurred from 2004 to 2006. Data were collected from questionnaires that were sent to all 750 secondary or tertiary perinatal care centers in Japan. RESULTS: Eighty-two cases (14 with fetal hydrops) were analyzed (supraventricular tachycardia [SVT], n = 52; atrial flutter [AFL], n = 23; and ventricular tachycardia, n = 7)...
July 19, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28719597/pharmacogenomics-study-of-thiazide-diuretics-and-qt-interval-in-multi-ethnic-populations-the-cohorts-for-heart-and-aging-research-in-genomic-epidemiology
#17
A A Seyerle, C M Sitlani, R Noordam, S M Gogarten, J Li, X Li, D S Evans, F Sun, M A Laaksonen, A Isaacs, K Kristiansson, H M Highland, J D Stewart, T B Harris, S Trompet, J C Bis, G M Peloso, J A Brody, L Broer, E L Busch, Q Duan, A M Stilp, C J O'Donnell, P W Macfarlane, J S Floyd, J A Kors, H J Lin, R Li-Gao, T Sofer, R Méndez-Giráldez, S R Cummings, S R Heckbert, A Hofman, I Ford, Y Li, L J Launer, K Porthan, C Newton-Cheh, M D Napier, K F Kerr, A P Reiner, K M Rice, J Roach, B M Buckley, E Z Soliman, R de Mutsert, N Sotoodehnia, A G Uitterlinden, K E North, C R Lee, V Gudnason, T Stürmer, F R Rosendaal, K D Taylor, K L Wiggins, J G Wilson, Y-DI Chen, R C Kaplan, K Wilhelmsen, L A Cupples, V Salomaa, C van Duijn, J W Jukema, Y Liu, D O Mook-Kanamori, L A Lange, R S Vasan, A V Smith, B H Stricker, C C Laurie, J I Rotter, E A Whitsel, B M Psaty, C L Avery
Thiazide diuretics, commonly used antihypertensives, may cause QT interval (QT) prolongation, a risk factor for highly fatal and difficult to predict ventricular arrhythmias. We examined whether common single-nucleotide polymorphisms (SNPs) modified the association between thiazide use and QT or its component parts (QRS interval, JT interval) by performing ancestry-specific, trans-ethnic and cross-phenotype genome-wide analyses of European (66%), African American (15%) and Hispanic (19%) populations (N=78 199), leveraging longitudinal data, incorporating corrected standard errors to account for underestimation of interaction estimate variances and evaluating evidence for pathway enrichment...
July 18, 2017: Pharmacogenomics Journal
https://www.readbyqxmd.com/read/28717114/the-efficacy-of-isochronal-3d-mapping-based-ablation-of-ventricular-arrhythmia
#18
Masahito Suzuki, Junichi Nitta, Yosuke Hayashi, Kikou Lee, Keita Watanabe, Tatsuhiko Hirao, Nobutaka Kato, Yukihiro Inamura, Akira Sato, Masahiko Goya, Kenzo Hirao, Mitsuaki Isobe
Treatment of ventricular arrhythmias (VAs) commonly involves ablating sites showing electrograms with the earliest activity relative to the VA, but there is no threshold value for prematurity guaranteeing success. Ablation of sites with great prematurity can still result in failure.We hypothesized that isochronal map area (ISCA), derived from isochrones indicating electrogram prematurity, could help identify ablation targets in VA patients, as well as predict outcome. Specifically, we hypothesized that smaller ICSA for a given prematurity value would indicate a shallower arrhythmogenic focus leading to a higher likelihood of successful ablation...
July 14, 2017: International Heart Journal
https://www.readbyqxmd.com/read/28715142/cholinesterase-inhibition-reduces-arrhythmias-in-asymptomatic-chagas-disease
#19
Renata Rodrigues Teixeira de Castro, Graciema Porphirio, Sergio Salles Xavier, Ruy Silveira Moraes, Elton Luis Ferlin, Jorge Pinto Ribeiro, Antonio Claudio Lucas da Nóbrega
INTRODUCTION: Parasympathetic dysfunction may play a role in the genesis of arrhythmias in Chagas disease. AIM: This study evaluates the acute effects of pyridostigmine (PYR), a reversible cholinesterase inhibitor, on the occurrence of arrhythmias in patients with Chagas cardiac disease. METHOD: Following a double-blind, randomized, placebo-controlled, cross-over protocol, 17 patients (age 50±2 years) with Chagas cardiac disease type B underwent 24-hour Holter recordings after oral administration of either pyridostigmine bromide (45 mg, 3 times/day) or placebo (PLA)...
July 17, 2017: Cardiovascular Therapeutics
https://www.readbyqxmd.com/read/28712558/catheter-ablation-of-accessory-pathway-14-year-trends-in-utilization-and-complications-in-adults-in-the-united-states
#20
Jalaj Garg, Neeraj Shah, Parasuram Krishnamoorthy, Kathan Mehta, Babak Bozorgnia, Noel G Boyle, Ronald Freudenberger, Andrea Natale
BACKGROUND: The aim of this study was to determine the temporal trends in utilization of catheter ablation of accessory pathways in the United States. METHODS: All patients from the Nationwide Inpatient Sample (NIS) ≥18years of age with a primary diagnosis of anomalous atrioventricular excitation syndrome (International Classification of Diseases, Ninth Edition, Clinical Modification [ICD-9-CM] code 426.7) were included in the study. Patients who underwent catheter ablation were identified using ICD-9-CM procedure code 37...
June 30, 2017: International Journal of Cardiology
keyword
keyword
40462
1
2
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"