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heart cryoablation

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https://www.readbyqxmd.com/read/28832094/initial-experience-of-catheter-ablation-for-cardiac-arrhythmias-in-children-and-adolescents-at-a-newly-built-ablation-centre
#1
Radosław Pietrzak, Piotr Lodziński, Tomasz Książczyk, Paweł Balsam, Monika Gawałko, Grzegorz Opolski, Bożena Werner
BACKGROUND: Catheter ablation (CA) therapy is the first choice treatment in adults with heart rhythm disturbances. The arrhythmias in adults are mainly conditioned by coronary disease. Etiology of arrhythmias in children is mostly associated with inherited heart disorders. According to the current guidelines the CA is widely used in children, indicating the need to make it more achievable in pediatric population. AIM: To assess efficacy and safety of CA in children with different types of arrhythmias on the initial learning curve at newly built Ablation Center in The Independent Pediatric Hospital of Medical University of Warsaw...
August 23, 2017: Kardiologia Polska
https://www.readbyqxmd.com/read/28818088/assessment-of-the-effect-of-left-atrial-cryoablation-enhanced-by-ganglionated-plexi-ablation-in-the-treatment-of-atrial-fibrillation-in-patients-undergoing-open-heart-surgery
#2
Jiří Bárta, Radim Brát
BACKGROUND: The aim of our study was to investigate, whether enhancement of left atrial cryoablation by ablation of the autonomic nervous system of left atrium leads to influencing the outcomes of surgical treatment of atrial fibrillation in patients with structural heart disease undergoing open-heart surgery. METHODS: The observed patient file consisted of 100 patients, who have undergone a combined open-heart surgery at our department between July 2012 and December 2014...
August 17, 2017: Journal of Cardiothoracic Surgery
https://www.readbyqxmd.com/read/28803547/cryoablation-of-cardiophrenic-angle-lymph-node-metastases-a-case-report
#3
Xiaomei Luo, Weibing He, Xinan Long, Gang Fang, Zhonghai Li, Rongrong Li, Kecheng Xu, Lizhi Niu
BACKGROUND: Cardiophrenic angle lymph node metastases are relatively rare. Surgical resection is the main treatment for cardiophrenic angle lymph node metastasis, but it is not always possible. CASE PRESENTATION: Here, we report our initial experience with cryoablation of a cardiophrenic angle lymph node metastasis from liver cancer. As the cardiophrenic angle lymph node metastasis was located close to the heart, about 200 mL of 0.9% saline was injected into the pericardium to separate the heart from the target area...
August 14, 2017: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/28687669/atrioventricular-nodal-reentrant-tachycardia-in-patients-with-congenital-heart-disease-outcome-after-catheter-ablation
#4
MULTICENTER STUDY
John Papagiannis, Daniel Joseph Beissel, Ulrich Krause, Michel Cabrera, Marta Telishevska, Stephen Seslar, Christopher Johnsrude, Charles Anderson, Svjetlana Tisma-Dupanovic, Diana Connelly, Dimosthenis Avramidis, Christopher Carter, Laszlo Kornyei, Ian Law, Nicholas Von Bergen, Jan Janusek, Jennifer Silva, Eric Rosenthal, Mark Willcox, Peter Kubus, Gabriele Hessling, Thomas Paul
BACKGROUND: The relationship of atrioventricular nodal reentrant tachycardia to congenital heart disease (CHD) and the outcome of catheter ablation in this population have not been studied adequately. METHODS AND RESULTS: A multicenter retrospective study was performed on patients with CHD who had atrioventricular nodal reentrant tachycardia and were treated with catheter ablation. There were 109 patients (61 women), aged 22.1±13.4 years. The majority, 86 of 109 (79%), had CHD resulting in right heart pressure or volume overload...
July 2017: Circulation. Arrhythmia and Electrophysiology
https://www.readbyqxmd.com/read/28506919/novel-dyeless-and-fluoro-less-approach-to-cryoballoon-pulmonary-vein-occlusion-assessment
#5
Boaz Avitall, Arthur Kalinski, G Stephen Kocheril, Timothy G Laske, Nicolas Coulombe
BACKGROUND: Pulmonary vein (PV) occlusion is essential for PV isolation (PVI) using the cryoballoon. Currently occlusion is arbitrarily determined using fluoroscopy and contrast media. This study aimed to create an objective measure without utilizing excessive fluoroscopy and using no contrast media. OBJECTIVE: To ensure PV occlusion without fluoroscopy and contrast dye. METHODS: In 4 in vivo hearts 113 PV occlusions were tested with a 50% cold dye saline mix at 4°C...
May 13, 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/28449531/ablation-of-atrial-fibrillation-single-shot-techniques-poised-to-dominate-rhythm-control-strategies-the-future-is-here
#6
EDITORIAL
Antonis S Manolis
Over the recent years, the advent of single-shot techniques, such as circular catheter and cryoballoon ablation, has ushered in a new era in the catheter ablation approach and rhythm control strategies of patients with atrial fibrillation (AF). These techniques make it easier to navigate the heart and have the potential to decrease the threshold for, expand the access to, and increase patient and physician acceptance of rhythm-control therapies, that may lead to reduction of the AF disease burden and its socioeconomic impact...
March 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28165525/cryoablation-for-treatment-of-cardiac-arrhythmias-results-of-the-european-heart-rhythm-association-survey
#7
Jian Chen, Radoslaw Lenarczyk, Serge Boveda, Roland Richard Tilz, Antonio Hernandez-Madrid, Pawel Ptaszynski, Janis Pudulis, Nikolaos Dagres
The purpose of this survey was to assess the current practice in Europe regarding cryoablation for treatment of different cardiac arrhythmias. The data are based on an electronic questionnaire sent to members of the European Heart Rhythm Association Research Network. Responses were received from 49 centres in 18 countries. The results show that cryoablation for supraventricular tachycardia in European centres is an alternative to radiofrequency ablation, which is in accordance with guidelines. There is reasonable consensus regarding clinical results and complications of cryoablation procedure...
February 1, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/28078383/effects-of-triple-cryoenergy-application-on-lesion-formation-and-coronary-arteries-in-the-developing-myocardium
#8
Ulrich Krause, Filipe D Abreu da Cunha, David Backhoff, Claudius Jacobshagen, Sophia Klehs, Heike E Schneider, Thomas Paul
To improve long-term outcome after cryoablation of substrates of supraventricular tachycardia, application of two and three consecutive freeze-thaw cycles has been performed. The effect of triple freeze-thaw cycles on lesion formation within developing myocardium and coronary arteries, however, has not been studied yet. In eight piglets (mean age 15 weeks, weight 15-20 kg), 30 cryolesions (three consecutive freeze-thaw cycles) were applied to the atrial aspect of both AV valve annuli (n = 18) as well as to ventricular myocardium below the valves (n = 12)...
April 2017: Pediatric Cardiology
https://www.readbyqxmd.com/read/27943134/cooling-dynamics-a-new-predictor-of-long-term-efficacy-of-atrioventricular-nodal-reentrant-tachycardia-cryoablation
#9
Mario Matta, Matteo Anselmino, Marco Scaglione, Marco Vitolo, Federico Ferraris, Paolo Di Donna, Domenico Caponi, Davide Castagno, Fiorenzo Gaita
PURPOSE: Catheter ablation of the slow pathway is the most effective treatment for atrioventricular nodal reentrant tachycardia (AVNRT). Cryoenergy, compared to radiofrequency, relates to lower heart block risk but higher incidence of AVNRT recurrences. The aims of this study are to confirm the safety and efficacy of AVNRT cryoablation and to identify predictors of long-term recurrences. METHODS: Among 241 patients undergoing AVNRT cryoablation, 239 (99.2%) experienced acute effective cryoablation of the slow pathway, and no procedure-related complications were reported...
December 10, 2016: Journal of Interventional Cardiac Electrophysiology: An International Journal of Arrhythmias and Pacing
https://www.readbyqxmd.com/read/27784660/cryoablation-of-atrial-fibrillation
#10
REVIEW
Florian Hintringer
BACKGROUND: Atrial fibrillation (AF) affects 1-2% of the population, and its prevalence is estimated to at least double in the next 50 years as the population ages. AREAS OF AGREEMENT: AF results in impaired quality of life and even increased mortality. Drugs frequently fail to stabilize sinus rhythm. AREAS OF CONTROVERSY: Catheter ablation is a valuable treatment alternative, even as a first-line therapy in selected cases. However, catheter ablation of AF is challenging, even for experienced operators...
December 2016: British Medical Bulletin
https://www.readbyqxmd.com/read/27660579/catheter-ablation-to-treat-supraventricular-arrhythmia-in-children-and-adults-with-congenital-heart-disease-what-we-know-and-where-we-are-going
#11
REVIEW
Patricia E Thomas, Scott L Macicek
BACKGROUND: Catheter ablation has been used to manage supraventricular arrhythmia in children since 1990. This article reviews the history of catheter ablation used to treat arrhythmia in children and discusses new frontiers in the field. We also address ablation in adult patients with a history of congenital heart disease (CHD) that was diagnosed and initially treated in childhood. METHODS: We conducted an evidence-based literature review to gather available data on ablation for supraventricular tachycardia in children and adult patients with CHD...
2016: Ochsner Journal
https://www.readbyqxmd.com/read/27633251/ventricular-fibrillation-treated-by-cryotherapy-to-the-right-ventricular-outflow-tract-a-case-report
#12
Paramdeep S Dhillon, Giulia Domenichini, Hanney Gonna, Anthony Li, Nadia Sunni, Michael Mahmoudi, Mark M Gallagher
BACKGROUND: Arrhythmias originating from the right ventricular outflow tract are generally considered benign but cases of cardiac arrest have been described, usually associated with polymorphic ventricular tachycardia or extrasystoles with short coupling intervals. CASE PRESENTATION: We report the case of a 54-year-old Caucasian woman with symptomatic right ventricular outflow tract arrhythmias without structural heart disease who suffered a ventricular fibrillation arrest without prior malignant clinical features...
September 15, 2016: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/27525722/cryoballoon-ablation-during-atrial-fibrillation-is-associated-with-faster-temperature-drop-and-lower-freezing-temperatures
#13
Giacomo Mugnai, Darragh Moran, Erwin Ströker, Diego Ruggiero, Hugo Enrique Coutino-Moreno, Ken Takarada, Valentina De Regibus, Rajin Choudhury, Saverio Iacopino, Pasquale Filannino, Vincent Umbrain, Stefan Beckers, Pedro Brugada, Carlo de Asmundis, Gian-Battista Chierchia
PURPOSE: Our aim was to analyse the temperature behaviour during second-generation cryoballoon ablation (CB-A) in patients with ongoing atrial fibrillation (AF) compared with those in sinus rhythm (SR). METHODS: Consecutive patients with drug-resistant AF who underwent pulmonary vein (PV) isolation by CB-A from April 2014 to May 2015 were analysed. The exclusion criteria were any contraindication for the procedure including the presence of an intracavitary thrombus, uncontrolled heart failure, contraindications to general anaesthesia and cardioversion to SR during the ablation procedure...
December 2016: Journal of Interventional Cardiac Electrophysiology: An International Journal of Arrhythmias and Pacing
https://www.readbyqxmd.com/read/27506821/multicenter-experience-with-catheter-ablation-for-ventricular-tachycardia-in-lamin-a-c-cardiomyopathy
#14
MULTICENTER STUDY
Saurabh Kumar, Alexander F A Androulakis, Jean-Marc Sellal, Philippe Maury, Estelle Gandjbakhch, Xavier Waintraub, Anne Rollin, Pascale Richard, Philippe Charron, Samuel H Baldinger, Ciorsti J Macintyre, Bruce A Koplan, Roy M John, Gregory F Michaud, Katja Zeppenfeld, Frederic Sacher, Neal K Lakdawala, William G Stevenson, Usha B Tedrow
BACKGROUND: Lamin A/C (LMNA) cardiomyopathy is a genetic disease with a proclivity for ventricular arrhythmias. We describe the multicenter experience with percutaneous catheter ablation of sustained monomorphic ventricular tachycardia (VT) in LMNA cardiomyopathy. METHODS AND RESULTS: Twenty-five consecutive LMNA mutation patients from 4 centers were included (mean age, 55±9 years; ejection fraction, 34±12%; VT storm in 36%). Complete atrioventricular block was present in 11 patients; 3 patients were on mechanical circulatory support for severe heart failure...
August 2016: Circulation. Arrhythmia and Electrophysiology
https://www.readbyqxmd.com/read/27422985/partial-ik1-blockade-destabilizes-spiral-wave-rotation-center-without-inducing-wave-breakup-and-facilitates-termination-of-reentrant-arrhythmias-in-ventricles
#15
Yasunori Kushiyama, Haruo Honjo, Ryoko Niwa, Hiroki Takanari, Masatoshi Yamazaki, Yoshio Takemoto, Ichiro Sakuma, Itsuo Kodama, Kaichiro Kamiya
It has been reported that blockade of the inward rectifier K(+) current (IK1) facilitates termination of ventricular fibrillation. We hypothesized that partial IK1 blockade destabilizes spiral wave (SW) re-entry, leading to its termination. Optical action potential (AP) signals were recorded from left ventricles of Langendorff-perfused rabbit hearts with endocardial cryoablation. The dynamics of SW re-entry were analyzed during ventricular tachycardia (VT), induced by cross-field stimulation. Intercellular electrical coupling in the myocardial tissue was evaluated by the space constant...
September 1, 2016: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/27387491/a-case-report-of-primary-cardiac-myxofibrosarcoma-presenting-with-severe-congestive-heart-failure
#16
Kosuke Ujihira, Akira Yamada, Naritomo Nishioka, Yutaka Iba, Ryushi Maruyama, Katsuhiko Nakanishi, Ai Shimizu, Kanako C Hatanaka, Tomoko Mitsuhashi, Toshiya Shinohara, Hatsue Ishibashi Ueda
BACKGROUND: Primary cardiac sarcomas are extremely rare. Furthermore, the myxofibrosarcomas are one of the rarest forms of cardiac sarcomas, and its prognosis is known to be quite poor. CASE PRESENTATION: This is a case of a 23-year-old man who presented with acute severe congestive heart failure caused by almost complete obstruction of the mitral valve due to a large left atrial tumor. The patient required endotracheal intubation before his arrival to the hospital, and underwent an emergent surgical excision of the tumor...
July 7, 2016: Journal of Cardiothoracic Surgery
https://www.readbyqxmd.com/read/27248647/cox-maze-iv-cryoablation-and-postoperative-heart-failure-in-mitral-valve-surgery-patients
#17
Gabriella Boano, Meriam Åström Aneq, Jennie Kemppi, Farkas Vánky
OBJECTIVE: The indications for and the risk and benefit of concomitant surgical ablation for atrial fibrillation (AF) have not been fully delineated. Our aim was to survey whether the Cox-maze IV procedure is associated with postoperative heart failure (PHF) or other adverse short-term outcomes after mitral valve surgery (MVS). DESIGN: Consecutive patients with AF undergoing MVS with (n = 50) or without (n = 66) concomitant Cox-maze IV cryoablation were analysed regarding perioperative data and one-year mortality...
February 2017: Scandinavian Cardiovascular Journal: SCJ
https://www.readbyqxmd.com/read/27220934/-double-chambered-right-ventricle-with-annuloaortic-ectasia-report-of-a-case
#18
Fumiaki Kimura, Sentarou Nakanishi, Hiroyuki Kamiya
A 61-year-old man presented with lower leg edema, left-sided parasternal systolic heart murmur, and electrocardiographic abnormalities. Transthoracic echocardiography revealed myocardial hypertrophy and severe obstruction of the outflow tract of the right ventricle (RV) with a gradient of 134 mmHg. Cardiac catheterization confirmed the presence of double chambered right ventricle, with a pressure gradient of 84 mmHg between RV inlet and outlet. Chest computed tomography showed his aortic root enlarged to 55 mm...
May 2016: Kyobu Geka. the Japanese Journal of Thoracic Surgery
https://www.readbyqxmd.com/read/27033794/-application-of-cryoablation-in-%C3%A2-minimally-invasive-mitral-valve-surgery
#19
Xiaobing Li, Limimg Liu, Long Song, Cheng Luo, Benli Yang, Yuhong Liu
OBJECTIVE: To summarize the clinical data of patients who experienced cryoablation in minimally invasive mitral valve surgery and to explore safety and effectiveness of the surgery.
 METHODS: We retrospectively collected the clinical data of patients who experienced cryoablation in minimally invasive mitral valve surgery in Department of Cardiovascular of Second Xiangya Hospital from August 2013 to July 2015. Through a right side (4-6 cm) thoracotomy, femoral cannulation and aortic cross-clamp by Chitwood clamper was performed, left atrium was entered from interatrial groove...
March 28, 2016: Zhong Nan da Xue Xue Bao. Yi Xue Ban, Journal of Central South University. Medical Sciences
https://www.readbyqxmd.com/read/26988292/monocyte-toll-like-receptor-expression-in-patients-with-atrial-fibrillation
#20
Kadri Murat Gurses, Duygu Kocyigit, Muhammed Ulvi Yalcin, Hande Canpinar, Hikmet Yorgun, Mehmet Levent Sahiner, Ergun Baris Kaya, Mehmet Ali Oto, Necla Ozer, Dicle Guc, Kudret Aytemir
Atrial fibrillation (AF) is the most common sustained arrhythmia. Inflammation has been suggested to play a vital role in the pathogenesis. Previous studies have investigated expression of inflammatory markers in AF. Several studies have focused on the effects of toll-like receptors (TLRs) on heart in terms of capability of modulating inflammation. In this study, we aimed to investigate whether peripheral monocyte TLR expression was associated with the AF presence, and recurrence of AF after cryoablation, as a reflection of inflammatory status...
May 1, 2016: American Journal of Cardiology
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