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https://www.readbyqxmd.com/read/28800169/global-multi-electrode-contact-mapping-plus-ablation-with-a-single-catheter-preclinical-and-preliminary-experience-in-humans-with-atrial-fibrillation
#1
Hans Kottkamp, Fabian Moser, Andreas Rieger, Doreen Schreiber, Christian Pönisch, Monica Trofin
INTRODUCTION: One question for the technological advancement of catheter ablation of atrial fibrillation (AF) is whether a creative new concept can combine and even improve the diagnostic mapping options of single-tip and basket catheters with the simplicity of the use of balloon catheters for ablation. Herein, we describe the first in-human experience with a single catheter offering such a complete solution. METHODS AND RESULTS: A new catheter (Globe®) with a distal multi-electrode array consisting of 16 ribs with 122 gold-plated electrodes was used...
August 11, 2017: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/28795289/beyond-pulmonary-vein-isolation-the-role-of-additional-sites-in-catheter-ablation-of-atrial-fibrillation
#2
REVIEW
Li-Wei Lo, Yenn-Jiang Lin, Shih-Lin Chang, Yu-Feng Hu, Fa-Po Chung, Shih-Ann Chen
PURPOSE OF REVIEW: Pulmonary vein (PV) isolation is the cornerstone of atrial fibrillation (AF) ablation. However, the long-term procedural outcome remains suboptimal and there is a frequent need for repeat ablation procedure, especially in patients with non-paroxysmal AF. The review article summarizes the rationales, recent evidences, and strategies of ablation of extra-PV sites and its clinical outcomes. RECENT FINDINGS: It is a consensus that durable PV isolations are a definite therapy in patients with paroxysmal AF...
August 9, 2017: Current Cardiology Reports
https://www.readbyqxmd.com/read/28790104/first-in-man-analysis-of-the-relationship-between-electrical-rotors-from-noninvasive-panoramic-mapping-and-atrial-fibrosis-from-magnetic-resonance-imaging-in-patients-with-persistent-atrial-fibrillation
#3
Christian Sohns, Christine Lemes, Andreas Metzner, Thomas Fink, Mikhail Chmelevsky, Tilman Maurer, Margarita Budanova, Vladislav Solntsev, Walther H W Schulze, Wieland Staab, Shibu Mathew, Christian Heeger, Bruno Reißmann, Eugene Kholmovski, Dietmar Kivelitz, Feifan Ouyang, Karl-Heinz Kuck
BACKGROUND: Late gadolinium enhancement (LGE) cardiovascular magnetic resonance (CMR) imaging can be used to evaluate characteristics of atrial fibrosis. The novel noninvasive epicardial and endocardial electrophysiology system (NEEES) allows for the identification of sources with rotor activity. This study describes a new technique to examine the relationship between rotors and LGE signal intensity in patients with persistent atrial fibrillation (PERS) scheduled for ablation. METHODS AND RESULTS: Ten consecutive patients underwent pulmonary vein isolation for persistent atrial fibrillation...
August 2017: Circulation. Arrhythmia and Electrophysiology
https://www.readbyqxmd.com/read/28769816/signal-reconstruction-of-pulmonary-vein-recordings-using-a-phenomenological-mathematical-model-application-to-pulmonary-vein-isolation-therapy
#4
Harry D Green, Glyn Thomas, John R Terry
Atrial fibrillation (AF), the most prevalent cardiac arrhythmia, is commonly initiated by ectopic beats originating from a small myocardial sleeve extending over the pulmonary veins. Pulmonary vein isolation therapy attempts to isolate the pulmonary veins from the left atrium by ablating tissue, commonly by using radiofrequency ablation. During this procedure, the cardiologist records electrical activity using a lasso catheter, and the activation pattern recorded is used as a guide toward which regions to ablate...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28768468/predictive-value-of-exercise-induced-atrial-natriuretic-peptide-secretion-for-the-presence-of-left-atrial-low-voltage-areas-in-patients-with-persistent-atrial-fibrillation
#5
Ran Yin, Zhongming Yang, Jingtian Peng, Bingong Li, Yongnan Fu, Zheqi Zheng
Objectives Left atrial (LA) low-voltage areas (LVAs) are a strong predictor of atrial fibrillation (AF) recurrence after pulmonary vein isolation (PVI). However, a non-invasive method for evaluating LA-LAVs has not been established yet. The objective of our study was to assess the predictive value of the plasma atrial natriuretic peptide (ANP) level for the presence of LA-LVAs in patients with persistent AF (PeAF). Methods Seventy-two PeAF patients underwent an exercise stress test preprocedurally. LA voltage maps were created after PVI...
August 2017: Acta Cardiologica
https://www.readbyqxmd.com/read/28766268/unusual-timing-of-a%C3%A2-common-complication-after-pulmonary-vein-isolation
#6
K Van Kolen, E Ströker, Y De Greef
No abstract text is available yet for this article.
August 1, 2017: Netherlands Heart Journal
https://www.readbyqxmd.com/read/28765764/focal-ablation-for-atrial-tachycardia-from-the-double-exit-of-the-marshall-bundle-inducing-atrial-fibrillation
#7
Jung Yeon Chin, Jong Woo Kim, Ki-Woon Kang
Atrial fibrillation (AF) from the ligament/vein of Marshall (LOM/VOM) has previously been described. We report the case of a 23-year-old woman with an antiarrhythmic drug-resistant AF induced by two distinct atrial tachycardias (ATs). Focal ablation of these ATs from the double-exit of the Marshall bundle using a three-dimensional map eliminated AF triggering, even though pulmonary vein electrical isolation is the cornerstone for paroxysmal AF. Such mechanisms are important as triggering factors to plan ablation for paroxysmal AF...
August 2017: Journal of Arrhythmia
https://www.readbyqxmd.com/read/28765758/clinical-benefits-of-deep-sedation-with-a-supraglottic-airway-while-monitoring-the-bispectral-index-during-catheter-ablation-of-atrial-fibrillation
#8
Satoru Hida, Masao Takemoto, Akihiro Masumoto, Takahiro Mito, Kazuhiro Nagaoka, Hiroshi Kumeda, Yuki Kawano, Ryota Aoki, Honsa Kang, Atsushi Tanaka, Atsutoshi Matsuo, Kiyoshi Hironaga, Teiji Okazaki, Kiyonobu Yoshitake, Kei-Ichiro Tayama, Ken-Ichi Kosuga
BACKGROUND: Pulmonary vein antrum isolation (PVAI) under sedation has proven to be a useful strategy for catheter ablation of atrial fibrillation (AF). METHODS: To evaluate the clinical benefits of respiratory management using supraglottic airways (SGAs) under deep sedation while monitoring the bispectral (BIS) index during the PVAI and the durations from admission to the catheterization room to starting the radiofrequency energy delivery (Time α), and from starting the radiofrequency energy delivery to completion of the PVAI (Time β), X-ray time, frequency of dislocations of the three-dimensional maps (D3DM), procedure-related complications, and proportion of an AF-free rate 15 months after the PVAI (PAFFR) in patients who received deep sedation without SGAs (Group A: n=48) and those with SGAs (Group B: n=51) were evaluated...
August 2017: Journal of Arrhythmia
https://www.readbyqxmd.com/read/28765756/wavefront-direction-and-cycle-length-affect-left-atrial-electrogram-amplitude
#9
Kazuki Iso, Ichiro Watanabe, Rikitake Kogawa, Yasuo Okumura, Koichi Nagashima, Keiko Takahashi, Ryuta Watanabe, Masaru Arai, Kimie Ohkubo, Toshiko Nakai, Atsushi Hirayama, Mizuki Nikaido
BACKGROUND: The relationship between atrial electrogram (EGM) characteristics in atrial fibrillation (AF) and those in sinus rhythm (SR) are generally unknown. The activation rate and direction may affect EGM characteristics. We examined characteristics of left atrial (LA) EGMs obtained during pacing from different sites. METHODS: The study included 10 patients undergoing pulmonary vein isolation for AF. Atrial EGMs were recorded from a 64-pole basket catheter placed in the LA, and bipolar EGM amplitudes from the distal electrode pair (1-2) and proximal electrode pair (6-7) from 8 splines were averaged...
August 2017: Journal of Arrhythmia
https://www.readbyqxmd.com/read/28765754/radiofrequency-catheter-ablation-is-effective-for-atrial-fibrillation-patients-with-hypertrophic-cardiomyopathy-by-decreasing-left-atrial-pressure
#10
Hiroki Ikenaga, Yukiko Nakano, Noboru Oda, Kazuyoshi Suenari, Akinori Sairaku, Takehito Tokuyama, Hiroshi Kawazoe, Hiroya Matsumura, Shunsuke Tomomori, Yasuki Kihara
BACKGROUND: Radiofrequency catheter ablation (RFCA) for atrial fibrillation (AF) refractory to medical therapy remains controversial in patients with hypertrophic cardiomyopathy (HCM); the acute effects on the direct left atrial (LA) pressure are not completely understood. METHODS: We consecutively studied patients with HCM (n=15) and without HCM (NHCM, n=106) who underwent extensive encircling pulmonary vein isolation for drug-refractory AF. We compared clinical parameters, echocardiographic parameters, electrophysiological parameters, LA pressures using hemodynamic catheterization and recurrence rate in both groups...
August 2017: Journal of Arrhythmia
https://www.readbyqxmd.com/read/28765086/spectrum-of-atrial-arrhythmias-using-the-ligament-of-marshall-in-patients-with-atrial-fibrillation
#11
Aman Chugh, Hitinder S Gurm, Kavita Krishnasamy, Mohammed Saeed, Watchara Lohawijarn, Kyle Hornsby, Ryan Cunnane, Hamid Ghanbari, Rakesh Latchamsetty, Thomas Crawford, Krit Jongnarangsin, Frank Bogun, Hakan Oral, Fred Morady
BACKGROUND: The role of the ligament of Marshall (LOM) in patients with atrial fibrillation (AF) has not been well defined. OBJECTIVE: The purpose of this study was to describe the role of the LOM in patients with AF and related arrhythmias. METHODS: Fifty-six patients (mean age 63 ± 11 years; persistent AF in 48 [86%]; ejection fraction 0.49 ± 0.13; left atrial diameter 4.7 ± 0.6 cm) with LOM-mediated arrhythmias were included. RESULTS: A LOM-pulmonary vein (PV) connection was present in 18 patients (32%) and was eliminated with radiofrequency (RF) ablation at the left lateral ridge or crux (n = 12), at the mitral annulus (n = 3), or with alcohol/ethanol (EtOH) ablation of the vein of Marshall (VOM; n = 3)...
July 29, 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/28761672/adjunctive-interpulmonary-isthmus-ablation-has-no-added-effects-on-atrial-fibrillation-recurrence
#12
Shunichi Higashiya, Hirosuke Yamaji, Takashi Murakami, Kazuyoshi Hina, Hiroshi Kawamura, Masaaki Murakami, Shigeshi Kamikawa, Issei Komatsubara, Shozo Kusachi
OBJECTIVE: Data on the efficacy of adjunctive interpulmonary isthmus ablation following completion of extensive encircling pulmonary vein isolation (EEPVI) on atrial fibrillation (AF) recurrence have still been insufficient. We aimed to compare the AF recurrence between EEPVI with and without adjunctive interpulmonary isthmus ablation. METHODS: We enrolled 200 consecutive patients with paroxysmal AF (first session) who underwent EEPVI with double-Lasso technique...
2017: Open Heart
https://www.readbyqxmd.com/read/28761022/vagal-denervation-in-atrial-fibrillation-ablation-a-comprehensive-review
#13
Tolga Aksu, Tümer Erdem Güler, Ferit Onur Mutluer, Mehmet Ali Oto
Although pulmonary vein isolation is accepted as an established interventional treatment in paroxysmal atrial fibrillation (AF), alternative modalities are being investigated because of the high recurrence rates of nonparoxysmal forms. One of the alternative ablation approaches is ablation or modification of vagal ganglionated plexi (VGP). The technique has not only been used in vagally mediated AF but also investigated in paroxysmal and nonparoxysmal AF. Clinical studies demonstrate significant discrepancy related with detection of VGP sites or ablation targets and definition of procedurel end-points, so far...
July 25, 2017: Anatolian Journal of Cardiology
https://www.readbyqxmd.com/read/28760469/delayed-electroanatomic-mapping-after-surgical-ablation-for-persistent-atrial-fibrillation
#14
Alan Bulava, Ales Mokracek, Vojtech Kurfirst
BACKGROUND: Long-term efficacy of catheter-based treatment of persistent atrial fibrillation is unsatisfactory. Minimally invasive surgical ablation techniques have been developed recently but their true efficacy has never been systematically tested. METHODS: Seventy patients (median age 63.5 years) with persistent atrial fibrillation underwent epicardial thoracoscopic radiofrequency pulmonary vein (PV) isolation, linear ablation, Marshal ligament disruption, and exclusion of the left atrial appendage...
July 29, 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/28758063/acquired-systemic-to-pulmonary-venous-shunt-or-persistent-left-superior-vena-cava-a-rare-right-to-left-shunt-case-based-discussion
#15
Alexandre Gamet, Pascale Raud-Raynier, Thomas Kerforne, Stéphane Velasco, Luc Christiaens
Cardiac shunts are often described in congenital or pediatric populations, but systemic-to-pulmonary venous shunts in adult patients are reported in literature in isolated case reports. We present the case of a 70-year-old female with a left superior vena cava (SVC) draining into the left atrium by the left superior pulmonary vein, with a complete right-to-left shunt of the superior venous circulation caused by a former catheter thrombosis in the right SVC. Diagnosis was suspected after a contrast echocardiography showing an exclusive perfusion of left heart after intravenous injection and confirmed by helical computed tomography with three-dimensional reconstruction...
July 2017: Journal of Cardiovascular Echography
https://www.readbyqxmd.com/read/28752725/optional-caval-filter-in-kidney-cancer-patients-with-tumor-thrombus-level-i-and-ii
#16
Marco Grasso, Salvatore Blanco, Vittorio Segramora, Emanuele C Grasso, Davide Leni, Grazia M Conti
BACKGROUND: Kidney diseases which require a radical surgical approach can come up complicated by the presence of a thrombus of the renal vein or the inferior vena cava (IVC). The overwhelming majority of these cases concern the presence of a kidney tumor, especially renal cell carcinoma (RCC). Kidney tumor presenting with thrombus extension into the IVC represents a difficult operative challenge, especially for the risk of thrombus dislocation due to the manipulation of the IVC during tumor isolation, which may result in pulmonary embolism (PE)...
July 27, 2017: Minerva Urologica e Nefrologica, the Italian Journal of Urology and Nephrology
https://www.readbyqxmd.com/read/28750697/temperature-controlled-radiofrequency-ablation-for-pulmonary-vein-isolation-in-patients-with-atrial-fibrillation
#17
Jin Iwasawa, Jacob S Koruth, Jan Petru, Libor Dujka, Stepan Kralovec, Katerina Mzourkova, Srinivas R Dukkipati, Petr Neuzil, Vivek Y Reddy
BACKGROUND: Saline irrigation improved the safety of radiofrequency (RF) ablation, but the thermal feedback for energy titration is absent. OBJECTIVES: To allow temperature-controlled irrigated ablation, a novel irrigated RF catheter was designed with a diamond-embedded tip (for rapid cooling) and 6 surface thermocouples to reflect tissue temperature. High-resolution electrograms (EGMs) from the split-tip electrode allowed rapid lesion assessment. The authors evaluated the preclinical and clinical performance of this catheter for pulmonary vein (PV) isolation...
August 1, 2017: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/28747031/role-of-triggers-and-substrate-in-heart-failure-based-atrial-fibrillation-is-pulmonary-vein-isolation-still-the-cornerstone-of-atrial-fibrillation-therapy
#18
EDITORIAL
Reza Wakili, Dobromir Dobrev
No abstract text is available yet for this article.
September 15, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28747027/colchicine-for-prevention-of-post-cardiac-procedure-atrial-fibrillation-meta-analysis-of-randomized-controlled-trials
#19
Mohsin Salih, Aiman Smer, Richard Charnigo, Mohamed Ayan, Yousef H Darrat, Mahmoud Traina, Gustavo X Morales, Luigi DiBiase, Andrea Natale, Claude S Elayi
BACKGROUND: Development of atrial fibrillation after certain cardiac procedures is a common medical problem. The inflammatory process plays an important role in the pathogenesis of post-cardiac procedure atrial fibrillation (PCP-AF). Colchicine, a potent anti-inflammatory agent, has been used in several studies to reduce the risk of PCP-AF. This meta-analysis of randomized controlled trials (RCTs) was conducted to assess the efficacy of colchicine in prevention of PC-PAF. METHODS: We searched PubMed, EMBASE, Web of Science, Cochrane Library database and Google Scholar for RCTs, using terms "Atrial fibrillation, atrial, or fibrillation and colchicine"...
September 15, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28746223/decreasing-incidence-and-mortality-among-hospitalized-patients-suffering-a-ventilator-associated-pneumonia-analysis-of-the-spanish-national-hospital-discharge-database-from-2010-to-2014
#20
Javier de Miguel-Díez, Ana López-de-Andrés, Valentín Hernández-Barrera, Isabel Jiménez-Trujillo, Manuel Méndez-Bailón, José M de Miguel-Yanes, Benito Del Rio-Lopez, Rodrigo Jiménez-García
The aim of this study was to describe trends in the incidence and outcomes of ventilator-associated pneumonia (VAP) among hospitalized patients in Spain (2010-2014).This is a retrospective study using the Spanish national hospital discharge database from year 2010 to 2014. We selected all hospital admissions that had an ICD-9-CM code: 997.31 for VAP in any diagnosis position. We analyzed incidence, sociodemographic and clinical characteristics, procedures, pathogen isolations, and hospital outcomes.We identified 9336 admissions with patients suffering a VAP...
July 2017: Medicine (Baltimore)
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