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https://www.readbyqxmd.com/read/28652674/evolution-of-ventricular-outpouching-through-the-fetal-and-postnatal-periods-unabating-dilemma-of-serial-observation-or-surgical-correction
#1
REVIEW
Niraj Kumar Dipak, Sumitra Venkatesh, Shakuntala Prabhu, Sudha Rao
Ventricular outpouching is a rare finding in prenatal sonography and the main differential diagnoses are diverticulum, aneurysm, and pseudoaneurysm in addition to congenital cysts and clefts. The various modes of fetal presentation of congenital ventricular outpouching include an abnormal four-chamber view on fetal two-dimensional echocardiogram, fetal arrhythmia, fetal hydrops, and pericardial effusion. Left ventricular aneurysm (LVA)/nonapical diverticula are usually isolated defects. Apical diverticula are always associated with midline thoracoabdominal defects (epigastric pulsating diverticulum or large omphalocele) and other structural malformations of the heart...
July 2017: Journal of the Saudi Heart Association
https://www.readbyqxmd.com/read/28652611/common-lipid-features-of-lethal-ventricular-tarchyarrhythmias-lvtas-induced-by-myocardial-infarction-and-myocardial-ion-channel-diseases
#2
Jiayan Wu, Qian Wu, Dian Wang, Jing Kong, Wentao Dai, Xingxing Wang, Xiaojun Yu
Lethal ventricular tachyarrhythmia (LVTA) is the most prevalent electrophysiological underpinning of sudden cardiac death (SCD), a condition that occurs in response to multiple pathophysiological abnormalities. The aim of this study was to identify common lipid features of LVTA that were induced by distinct pathophysiological conditions, thereby facilitating the discovery of novel SCD therapeutic targets. Two rat LVTA-SCD models were established to mimic myocardial infarction (MI) and myocardial ion channel diseases...
June 26, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28651348/an-e-e-ratio-on-echocardiography-predicts-the-existence-of-left-atrial-low-voltage-areas-and-poor-outcomes-after-catheter-ablation-for-atrial-fibrillation
#3
Masaharu Masuda, Masashi Fujita, Osamu Iida, Shin Okamoto, Takayuki Ishihara, Kiyonori Nanto, Takashi Kanda, Akihiro Sunaga, Takuya Tsujimura, Yasuhiro Matsuda, Takuya Ohashi, Masaaki Uematsu
Aims: An elevated left atrial pressure has been reported to play an important role in the development of atrial remodelling in atrial fibrillation (AF) patients. The study aimed at elucidating the association between the diastolic early transmitral flow velocity/mitral annular velocity (E/e', a non-invasive surrogate of left atrial pressure) and left atrial low-voltage-area existence, and the prognostic impact of the E/e' on procedural outcomes in patients undergoing AF ablation. Methods and results: Total of 215 consecutive patients were divided into 3 groups based on the estimated left atrial pressure: normal (E/e' < 8...
June 22, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/28646253/-ventricular-tachyarrhythmias-2017
#4
EDITORIAL
Carsten W Israel
No abstract text is available yet for this article.
June 2017: Herzschrittmachertherapie & Elektrophysiologie
https://www.readbyqxmd.com/read/28645806/brugada-syndrome-a-general-cardiologist-s-perspective
#5
REVIEW
Marija M Polovina, Milica Vukicevic, Bojan Banko, Gregory Y H Lip, Tatjana S Potpara
Brugada syndrome (BrS) is one of the commonest inherited primary arrhythmia syndromes typically presenting with arrhythmic syncope or sudden cardiac death (SCD) due to polymorphic ventricular tachycardia and ventricular fibrillation precipitated by vagotonia or fever in apparently healthy adults, less frequently in children. The prevalence of the syndrome (0.01%-0.3%) varies among regions and ethnicities, being the highest in Southeast Asia. BrS is diagnosed by the "coved type" ST-segment elevation≥2mm followed by a negative T-wave in ≥1 of the right precordial leads V1-V2...
June 20, 2017: European Journal of Internal Medicine
https://www.readbyqxmd.com/read/28641796/cardiac-sympathetic-denervation-for-refractory-ventricular-arrhythmias
#6
Marmar Vaseghi, Parag Barwad, Federico J Malavassi Corrales, Harikrishna Tandri, Nilesh Mathuria, Rushil Shah, Julie M Sorg, Jean Gima, Kaushik Mandal, Luis C Sàenz Morales, Yash Lokhandwala, Kalyanam Shivkumar
BACKGROUND: Cardiac sympathetic denervation (CSD) has been shown to reduce the burden of implantable cardioverter-defibrillator (ICD) shocks in small series of patients with structural heart disease (SHD) and recurrent ventricular tachyarrhythmias (VT). OBJECTIVES: This study assessed the value of CSD and the characteristics associated with outcomes in this population. METHODS: Patients with SHD who underwent CSD for refractory VT or VT storm at 5 international centers were analyzed by the International Cardiac Sympathetic Denervation Collaborative Group...
June 27, 2017: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/28641381/supraventricular-tachyarrhythmias-in-patients-with-a-persistent-left-superior-vena-cava
#7
Jongmin Hwang, Hyoung-Seob Park, Jun Kim, Jeong Su Kim, Jong Sung Park, Ki-Hun Kim, Myung Hwan Bae, Sang-Hee Lee, Young Soo Lee, Seongwook Han, Dae-Kyeong Kim, Tae-Joon Cha, Dong Gu Shin, Byung Chun Jung, Yoon-Nyun Kim
Aims: A persistent left superior vena cava (PLSVC) is the most common thoracic venous anomaly. This venous anomaly can impact the evaluation and treatment of supraventricular tachyarrhythmia (SVA). The aim of this study was to assess the proportion and characteristics of PLSVC in adult SVA patients. Methods and results: From July 2002 to July 2012, clinical and procedural data from databases of 10 cardiac electrophysiology laboratories in the Yeungnam region of the Republic of Korea were reviewed...
June 20, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/28639728/prospective-use-of-ablation-index-targets-improves-clinical-outcomes-following-ablation-for-atrial-fibrillation
#8
Ahmed Hussein, Moloy Das, Vivek Chaturvedi, Issa Khalil Asfour, Niji Daryanani, Maureen Morgan, Christina Ronayne, Matthew Shaw, Richard Snowdon, Dhiraj Gupta
AIMS: Late recovery of ablated tissue leading to reconnection of pulmonary veins remains common following radiofrequency catheter ablation for AF. Ablation Index (AI), a novel ablation quality marker, incorporates contact force (CF), time and power in a weighted formula. We hypothesized that prospective use of our previously-published derived AI targets would result in better outcomes when compared to CF-guided ablation. METHODS: 89 consecutive drug-refractory AF patients (49% paroxysmal) underwent AI-guided ablation (AI-group)...
June 22, 2017: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/28629852/bioelectronic-block-of-paravertebral-sympathetic-nerves-mitigates-post-myocardial-infarction-ventricular-arrhythmias
#9
Ray W Chui, Una Buckley, Pradeep S Rajendran, Tina Vrabec, Kalyanam Shivkumar, Jeffrey L Ardell
BACKGROUND: Autonomic dysfunction contributes to induction of ventricular tachyarrhythmia (VT). OBJECTIVE: To determine the efficacy of charge-balanced direct current (CBDC), applied to the T1-T2 segment of the paravertebral sympathetic chain, on VT inducibility post-myocardial infarction (MI). METHODS: In a porcine model, CBDC was applied in acute animals (n=7) to optimize stimulation parameters for sympathetic blockade and in chronic MI animals (n=7) to evaluate the potential for VTs...
June 16, 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/28626989/electrical-isolation-of-the-left-atrial-appendage-by-maze-like-catheter-substrate-modification-a-reproducible-strategy-for-pulmonary-vein-isolation-non-responders
#10
Stefano Bordignon, Laura Perrotta, Daniela Dugo, Fabrizio Bologna, Takahiko Nagase, Alexander Fuernkranz, Kr Julian Chun, Boris Schmidt
INTRODUCTION: The ablation strategy for atrial fibrillation (AF) despite pulmonary vein isolation (PVI) is controversial. Left atrial appendage isolation (LAAI) may contribute to improve outcome. We describe an ablation approach ("Maze-like"-LAAI) that (1) modifies the underlying LA substrate by linear ablation (2) eliminates the LAA as a putative AF trigger site and (3) incorporates an unambiguous procedural endpoint. The role of LAA closure (LAAC) after LAAI was investigated. METHODS: Patients with atrial tachyarrhythmias non-responsive to PVI underwent a LAAI ablation procedure...
June 19, 2017: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/28626201/survival-and-heart-failure-hospitalization-in-patients-with-cardiac-resynchronization-therapy-with-or-without-a-defibrillator-for-primary-prevention-in-japan%C3%A3-analysis-of-the-japan-cardiac-device-treatment-registry-database
#11
Hisashi Yokoshiki, Akihiko Shimizu, Takeshi Mitsuhashi, Hiroshi Furushima, Yukio Sekiguchi, Tetsuyuki Manaka, Nobuhiro Nishii, Takeshi Ueyama, Norishige Morita, Hideo Okamura, Takashi Nitta, Kenzo Hirao, Ken Okumura
BACKGROUND: Randomized control trials comparing the effectiveness of cardiac resynchronization therapy devices, with (CRT-D) or without (CRT-P) a defibrillator, are scarce in heart failure patients with no prior sustained ventricular tachyarrhythmias.Methods and Results:The Japan Cardiac Device Treatment Registry (JCDTR) has data for 2714 CRT-D and 555 CRT-P recipients for primary prevention with an implantation date between January 2011 and August 2015. Of these patients, follow-up data were available for 717...
June 13, 2017: Circulation Journal: Official Journal of the Japanese Circulation Society
https://www.readbyqxmd.com/read/28626178/hypoglycemic-coma-induced-by-the-use-of-succinic-acid-cibenzoline-in-frail-late-stage-elderly-subjects
#12
Yurie Hirata, Shinji Kamei, Fuminori Tatsumi, Masashi Shimoda, Akihito Tanabe, Junpei Sanada, Yoshiro Fushimi, Shintaro Irie, Tomoatsu Mune, Kohei Kaku, Hideaki Kaneto
Succinic acid cibenzoline (CZ) is an antiarrhythmic agent often used for the treatment of tachyarrhythmia. However, hypoglycemia should be avoided in the treatment of diabetes. We herein report two late-stage elderly subjects who experienced a severe and prolonged hypoglycemic coma after the usage of CZ. These cases suggest that, when CZ is administered to elderly subjects with renal dysfunction and/or frailty, we should be aware of the possibility that this medicine may induce hypoglycemia and should adjust the dose as appropriate and monitor the concentration of CZ to avoid severe hypoglycemia...
2017: Internal Medicine
https://www.readbyqxmd.com/read/28625400/successful-treatment-of-ventricular-fibrillation-storm-triggered-by-short-long-short-sequence-time-to-avoid-managed-ventricular-pacing
#13
Hilmi Alnsasra, Yuval Konstantino, Sergiy Bereza, Moti Haim
Sudden cardiac death (SCD) in hypertrophic cardiomyopathy (HCM) is caused by ventricular tachyarrhythmia that can be effectively treated by implantable cardioverter defibrillator (ICD) therapy. We report of a 28-year-old man with HCM and a dual chamber ICD, originally implanted for primary prevention of SCD, (programmed to AAI(R)-DDD(R); managed ventricular pacing (MVP) mode, Medtronic Inc. St Paul, MN USA). He presented with recurrent ICD shocks due to ventricular fibrillation (VF) despite antiarrhythmic therapy...
June 8, 2017: Journal of Electrocardiology
https://www.readbyqxmd.com/read/28614264/extremely-low-frame-rate-digital-fluoroscopy-in-catheter-ablation-of-atrial-fibrillation-a-comparison-of-2-versus-4-frame-rate
#14
Ji Hyun Lee, Jun Kim, Minsu Kim, Jongmin Hwang, You Mi Hwang, Joon-Won Kang, Gi-Byoung Nam, Kee-Joon Choi, You-Ho Kim
Despite the technological advance in 3-dimensional (3D) mapping, radiation exposure during catheter ablation of atrial fibrillation (AF) continues to be a major concern in both patients and physicians. Previous studies reported substantial radiation exposure (7369-8690 cGy cm) during AF catheter ablation with fluoroscopic settings of 7.5 frames per second (FPS) under 3D mapping system guidance. We evaluated the efficacy and safety of a low-frame-rate fluoroscopy protocol for catheter ablation for AF.Retrospective analysis of data on 133 patients who underwent AF catheter ablation with 3-D electro-anatomic mapping at our institute from January 2014 to May 2015 was performed...
June 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28612910/percutaneous-left-atrial-appendage-occlusion-procedures-in-patients-with-heart-failure
#15
Magdalena Szymała, Witold Streb, Katarzyna Mitręga, Tomasz Podolecki, Grzegorz Mencel, Tomasz Kukulski, Zbigniew Kalarus
BACKGROUND: Atrial fibrillation (AF) is the most common supraventricular tachyarrhythmia. The percutaneous left atrial appendage occlusion (LAAO) may be considered for the stroke prophylaxis in patients with nonvalvular AF (NVAF), especially in contraindications for oral anticoagulants (OAC) or high risk of bleeding. The data about implantation, safety, efficacy and follow-up are limited. Moreover, there are no studies on patients with NVAF and heart failure with severe left ventricular systolic dysfunction (left ventricular ejection fraction - LVEF ≤ 35%)...
June 14, 2017: Kardiologia Polska
https://www.readbyqxmd.com/read/28612230/right-atrial-diameter-and-outcome-of-catheter-ablation-of-atrial-fibrillation
#16
Song -Nan Wen, Nian Liu, Rong Bai, Ri-Bo Tang, Rong-Hui Yu, De-Yong Long, Cai-Hua Sang, Chen-Xi Jiang, Song-Nan Li, Jia-Hui Wu, Yan-Fei Ruan, Rong Hu, Xin Du, Xiao-Hui Liu, Jian-Zeng Dong, Chang-Sheng Ma
PURPOSE: While AF is considered more like a left atrial (LA) disease, to what extent the right atrium contributes to the pathogenesis and ablation outcome of AF remains unclear. This study aimed to identify if right atrial diameter (RAD) could predict arrhythmia recurrence after catheter ablation of atrial fibrillation (AF). METHODS: Four hundred and seventy patients with drug-resistant AF [paroxysmal AF (PAF) 196; non-PAF 274] who underwent primary catheter ablation were enrolled...
June 13, 2017: Journal of Interventional Cardiac Electrophysiology: An International Journal of Arrhythmias and Pacing
https://www.readbyqxmd.com/read/28611030/association-between-mutation-size-and-cardiac-involvement-in-myotonic-dystrophy-type-1-an-analysis-of-the-dm1-heart-registry
#17
Caroline Chong-Nguyen, Karim Wahbi, Vincent Algalarrondo, Henri Marc Bécane, Hélène Radvanyi-Hoffman, Pauline Arnaud, Denis Furling, Arnaud Lazarus, Guillaume Bassez, Anthony Béhin, Abdallah Fayssoil, Pascal Laforêt, Tanya Stojkovic, Bruno Eymard, Denis Duboc
BACKGROUND: In myotonic dystrophy type 1, the association between mutation size (CTG expansion) and the severity of cardiac involvement is controversial. METHODS AND RESULTS: We selected 855 patients with myotonic dystrophy type 1 (women, 51%; median age, 37 years), with genetic testing performed at the moment of their initial cardiac evaluation, out of 1014 patients included in the Myotonic Dystrophy Type 1-Heart Registry between January 2000 and December 2015...
June 2017: Circulation. Cardiovascular Genetics
https://www.readbyqxmd.com/read/28610990/atrial-ventricular-differences-in-rabbit-cardiac-voltage-gated-na-currents-basis-for-atrial-selective-block-by-ranolazine
#18
Rachel E Caves, Hongwei Cheng, Stéphanie C Choisy, Hanne C Gadeberg, Simon M Bryant, Jules C Hancox, Andrew F James
BACKGROUND: Class 1 antiarrhythmic drugs are highly effective in restoring and maintaining sinus rhythm in atrial fibrillation patients but carry a risk of ventricular tachyarrhythmia. The antianginal agent ranolazine is a prototypic atrial-selective voltage-gated Na(+) channel blocker but the mechanisms underlying its atrial-selective action remain unclear. OBJECTIVE: The present study examined the mechanisms underlying the atrial-selective action of ranolazine...
June 10, 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/28610957/effectiveness-of-heart-rate-control-on-hemodynamics-in-critically-ill-patients-with-atrial-tachyarrhythmias-managed-by-amiodarone
#19
Joe-Elie Salem, Pauline Dureau, Christian Funck-Brentano, Jean-Sébastien Hulot, Maria El-Aissaoui, Nadia Aissaoui, Saik Urien, Christophe Faisy
Atrial tachyarrhythmias (AT) are common in intensive care unit (ICU) patients and might contribute to hemodynamic instability if heart rate (HR) is persistently too rapid. We aimed to assess if HR control below 115 or 130bpm with amiodarone improves hemodynamics in ICU patients with AT. This observational study included 73 ICU patients with disabling AT receiving amiodarone for HR control. A total of 525 changes (mainly within 4-8h) in mean arterial pressure (MAP) and 167 changes in plasma lactate in response to HR variations above 115 or 130bpm were analyzed...
June 10, 2017: Pharmacological Research: the Official Journal of the Italian Pharmacological Society
https://www.readbyqxmd.com/read/28601469/clinical-course-of-tricuspid-regurgitation-in-repaired-tetralogy-of-fallot
#20
O I Woudstra, J P Bokma, M M Winter, P Kiès, M R M Jongbloed, H W Vliegen, M Groenink, F J Meijboom, B J M Mulder, B J Bouma
BACKGROUND: Little is known on the clinical course of tricuspid regurgitation (TR) in patients with repaired tetralogy of Fallot (rTOF) and which patients are at particular risk. This study aims to determine TR course, characteristics associated with TR progression, and the prognostic relevance of TR in rTOF patients. METHODS: In this dualcenter cohort study, rTOF patients from a prospective national registry with ≥1 cardiac magnetic resonance imaging study and ≥2 echocardiograms available were included...
June 2, 2017: International Journal of Cardiology
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