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https://www.readbyqxmd.com/read/27909512/concomitant-left-atrial-appendage-clipping-during-minimally-invasive-mitral-valve-surgery-technically-feasible-and-safe
#1
Ashraf Alqaqa Md, Shabiah Martin Md, Aiman Hamdan Md Facc, Fayez Shamoon Md Facc, Kourosh T Asgarian DO
BACKGROUND: It is believed that most of thrombi form in the left atrial appendage (LAA)before they emboli. Different surgical and percutaneouse approaches were suggested to manage the LAA. In this study we are evaluating the safety of clipping the LAA via minithoractotomy approach. METHOD: All consecutive patients who had minimally invasive mitral valve surgery with concomitant LAA clipping between December 2012 and February 2014 were included in the study. LAA exclusion was performed using AtriClip® LAA Exclusion System (Cincinnati, Ohio, AtriCure®)...
June 2016: Journal of Atrial Fibrillation
https://www.readbyqxmd.com/read/26759947/-neuroendovascular-treatment-for-cerebral-embolism-in-a-patient-just-after-aortic-valve-replacement%C3%AF-report-of-a-case
#2
Motoyuki Kumagai, Junichiro Nishizawa, Daisuke Heima, Kazuhiro Takatoku, Yoshihiko Watanabe, Yasuzumi Matsui, Hidenori Miyake
A 67-year-old woman suffered from severe aortic stenosis and atrial fibrillation, and underwent aortic valve replacement with a St. Jude Medical Regent 23-mm valve and pulmonary vein isolation using an AtriCure Isolator Synergy.At 6 days after the operation, she experienced sudden onset of atrial fibrillation, left side paralysis, and dysarthria. Right internal carotid artery embolism was diagnosed via magnetic resonance imaging, and we promptly performed neuroendovascular therapy with a Solitaire FR. Neuroendovascular treatment succeeded, and her neurological function was restored to near-normal...
December 2015: Kyobu Geka. the Japanese Journal of Thoracic Surgery
https://www.readbyqxmd.com/read/26387721/the-ablate-trial-safety-and-efficacy-of-cox-maze-iv-using-a-bipolar-radiofrequency-ablation-system
#3
RANDOMIZED CONTROLLED TRIAL
Jonathan M Philpott, Christian W Zemlin, James L Cox, Mack Stirling, Michael Mack, Robert L Hooker, Allen Morris, David A Heimansohn, James Longoria, Divyakant B Gandhi, Patrick M McCarthy
BACKGROUND: The Cox Maze-IV procedure (CMP-IV) has replaced the Cox Maze-III procedure as the most common approach for the surgical treatment of atrial fibrillation (AF). The Food and Drug Administration-regulated AtriCure Bipolar Radiofrequency Ablation of Permanent Atrial Fibrillation (ABLATE) trial sought to demonstrate the safety and efficacy of the CMP-IV performed with the Synergy ablation system (AtriCure, Inc, Cincinnati, OH). METHODS: Fifty-five patients (aged 70...
November 2015: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/26339727/freezing-equals-freezing-performance-of-two-cryoablation-devices-in-concomitant-mitral-valve-repair
#4
Julia Goette, Timo Weimar, Martina Vosseler, Michael Raab, Ulrike Walle, Markus Czesla, Nicolas Doll
Background Recent guidelines have recommended the addition of ablation in cardiac surgery for patients presenting with atrial fibrillation (AF). Currently available cryoablation devices use either nitrous oxide or argon gas as cooling agent. Our study aimed to compare success rates of two different devices currently available on the market and applied during concomitant cardiac surgery. Methods Between 2009 and 2012, data were collected from 120 consecutive patients in whom either the aluminum cryoICE ablation probe (AtriCure, Inc...
September 4, 2015: Thoracic and Cardiovascular Surgeon
https://www.readbyqxmd.com/read/26306127/the-left-atrial-appendage-target-for-stroke-reduction-in-atrial-fibrillation
#5
REVIEW
Basel Ramlawi, Walid K Abu Saleh, James Edgerton
A patient with atrial fibrillation (AF) has a greater than 5% annual risk of major stroke, a 5-fold increase compared to the general population. While anticoagulation remains the standard stroke prevention strategy, the nature of lifelong anticoagulation inevitably carries an increased risk of bleeding, increased stroke during periods of interruption, increased cost, and significant lifestyle modification. Many patients with atrial fibrillation have had their left atrial appendage (LAA) ligated or excised by surgeons during cardiac surgery, a decision based largely on intuition and with no clear evidence of efficacy in stroke risk reduction...
April 2015: Methodist DeBakey Cardiovascular Journal
https://www.readbyqxmd.com/read/24225239/-primary-experience-of-treating-23-lone-atrial-fibrillation-patients-with-a-completely-thoracoscopic-modified-maze-procedure
#6
Yan Li, Qiu-Ming Hu, Chun-Lei Xu, Wen Zeng, Yi-Xin Jia, Xu Meng
OBJECTIVE: To evaluate the safety and feasibility of a completely thoracoscopic modified Maze procedure for treatment of patients with lone atrial fibrillation(AF). METHODS: From September 2010 to October 2011, completely thoracoscopic modified Maze procedure was performed in 23 patients with lone atrial fibrillation (14 paroxysmal AF and 9 persistent AF). All patients were either refractory or intolerant to antiarrhythmic drug therapy or already experienced unsuccessful catheter-based ablation...
August 2013: Zhonghua Xin Xue Guan Bing za Zhi
https://www.readbyqxmd.com/read/22437797/performance-of-a-novel-dual-electrode-bipolar-radiofrequency-ablation-device-a-chronic-porcine-study
#7
Rochus K Voeller, Andreas Zierer, Richard B Schuessler, Ralph J Damiano
OBJECTIVE: : Over recent years, a variety of energy sources, including bipolar radiofrequency, have been used to replace the traditional incisions of the Cox-Maze procedure for the surgical treatment of atrial fibrillation (AF). The purpose of this study was to evaluate the safety and efficacy of a novel dual-electrode bipolar radiofrequency ablation device Synergy (Atricure, Inc., Cincinnati, OH USA) for AF in a chronic porcine model. METHODS: : Six domestic pigs underwent a modified Cox-Maze IV procedure without cardiopulmonary bypass using the Synergy device...
January 2011: Innovations: Technology and Techniques in Cardiothoracic and Vascular Surgery
https://www.readbyqxmd.com/read/22436925/wide-variations-in-energy-delivery-using-an-impedance-controlled-algorithm-in-bipolar-radiofrequency-ablation-evidence-against-fixed-time-ablation
#8
Spencer J Melby, Andreas Zierer, Rochus K Voeller, Shelly C Lall, Marci S Bailey, Marc R Moon, Richard B Schuessler, Ralph J Damiano
OBJECTIVE: : Bipolar radiofrequency ablation recently has been used to replace many of the incisions of the Cox-Maze procedure in the surgical treatment of atrial fibrillation. The unique aspect of this technology is that it uses an algorithm based on changes in tissue conductance to determine the energy required to achieve a transmural lesion instead of relying on predetermined time and/or temperature criteria to determine ablation duration, as with most other ablation technologies. The purpose of this study was to determine variations in the different parameters of ablation needed to create transmural lesions in human atria...
March 2007: Innovations: Technology and Techniques in Cardiothoracic and Vascular Surgery
https://www.readbyqxmd.com/read/22305553/chronic-performance-of-a-novel-radiofrequency-ablation-device-on-the-beating-heart-limitations-of-conduction-delay-to-assess-transmurality
#9
Anson M Lee, Abdulhameed Aziz, Kal L Clark, Richard B Schuessler, Ralph J Damiano
OBJECTIVE: The creation of consistently transmural lesions with epicardial ablation on the beating heart has represented a significant challenge for current technology. This study examined the chronic performance of the AtriCure Coolrail device (AtriCure Inc, West Chester, Ohio), an internally cooled, bipolar radiofrequency ablation device designed for off-pump epicardial ablation. The study also examined the reliability of using acute intraoperative conduction delay to evaluate lesion integrity...
October 2012: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/21906756/exclusion-of-the-left-atrial-appendage-with-a-novel-device-early-results-of-a-multicenter-trial
#10
MULTICENTER STUDY
Gorav Ailawadi, Marc W Gerdisch, Richard L Harvey, Robert L Hooker, Ralph J Damiano, Thomas Salamon, Michael J Mack
OBJECTIVE: Up to 90% of embolic strokes that occur in patients with atrial fibrillation originate from the left atrial appendage. Exclusion of the left atrial appendage during cardiac surgery may decrease the future risk of stroke, especially in patients with atrial fibrillation or at high risk for developing atrial fibrillation. We report the initial results of a multicenter Food and Drug Administration trial to assess the safety and efficacy of a novel left atrial appendage exclusion clip...
November 2011: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/21211273/-the-application-of-atricure-bipolar-radiofrequency-system-in-ablation-of-different-parts-and-different-times-of-pig-heart-atrium-and-the-analysis-of-transmural-lesions
#11
Pei-sheng Liu, Xin Chen, Ming Liu
OBJECTIVE: To analyze the transmural lesions of different parts of the pig heart atrium received different times of ablation applied with Atricure bipolar radiofrequency system. METHODS: Six fresh (ex vivo time<20 min) pig hearts with atrium preserved intact were used as the experimental objects and experimental groups were divided according to the ablation position. The Atricure bipolar radiofrequency system was applied in the ablation of the parts of the atrium, such as posterior wall of left atrium, anterior wall of left atrium, anterior wall of right atrium and posterior wall of left atrium close to mitral posterior ring...
December 15, 2010: Zhonghua Wai Ke za Zhi [Chinese Journal of Surgery]
https://www.readbyqxmd.com/read/20122702/efficacy-of-a-novel-bipolar-radiofrequency-ablation-device-on-the-beating-heart-for-atrial-fibrillation-ablation-a-long-term-porcine-study
#12
Rochus K Voeller, Andreas Zierer, Shelly C Lall, Shun-ichiro Sakamoto, Richard B Schuessler, Ralph J Damiano
OBJECTIVE: Over recent years, a variety of energy sources have been used to replace the traditional incisions of the Cox maze procedure for the surgical treatment of atrial fibrillation. This study evaluated the safety and efficacy of a new bipolar radiofrequency ablation device for atrial ablation in a long-term porcine model. METHODS: Six pigs underwent a Cox maze IV procedure on a beating heart off cardiopulmonary bypass using the AtriCure Isolator II bipolar ablation device (AtriCure, Inc, Cincinnati, Ohio)...
July 2010: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/19959142/animal-studies-of-epicardial-atrial-ablation
#13
Richard B Schuessler, Anson M Lee, Spencer J Melby, Rochus K Voeller, Sydney L Gaynor, Shun-Ichiro Sakamoto, Ralph J Damiano
The Cox maze procedure is an effective treatment of atrial fibrillation, with a long-term freedom from recurrence greater than 90%. The original procedure was highly invasive and required cardiopulmonary bypass. Modifications of the procedure that eliminate the need for cardiopulmonary bypass have been proposed, including use of alternative energy sources to replace cut-and-sew lesions with lines of ablation made from the epicardium on the beating heart. This has been challenging because atrial wall muscle thickness is extremely variable, and the muscle can be covered with an epicardial layer of fat...
December 2009: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/19748103/efficacy-of-a-cooled-bipolar-epicardial-radiofrequency-ablation-probe-for-creating-transmural-myocardial-lesions
#14
Mark A Wood, Amy L Ellenbogen, Vishesh Pathak, Kenneth A Ellenbogen, Vigneshwar Kasarajan
OBJECTIVE: Creation of transmural myocardial lesions with epicardial surgical devices to treat atrial fibrillation is difficult. A new cooled bipolar radiofrequency ablation probe was used to create transmural myocardial lesions under controlled conditions. METHODS: The Coolrail (AtriCure, Inc, West Chester, Ohio) is a handheld probe with 2 parallel 30-mm long radiofrequency conductors. Conductors are cooled by water irrigation. Lesions were delivered to epicardial surface of isolated bovine myocardium sliced 3- to 8-mm thick, with blood flow beneath tissue at 0 or 0...
February 2010: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/19595214/-intraoperative-treatment-for-atrial-fibrillation-using-bi-polar-radiofrequency-ablation-system-a-clinical-report-of-91-cases
#15
COMPARATIVE STUDY
Yong-qiang Cui, Xu Meng, Yan Li, Jian-gang Wang, Wen Zeng, Feng Gao, Chun-lei Xu
OBJECTIVE: To observe the short and mid-term therapeutic effects of Bi-polar ablation systems for intraoperative treatment of atrial fibrillation (AF). METHODS: From March 2005 to January 2007, 91 patients received intraoperative treatment of atrial fibrillation with Bi-polar ablation systems, including 5 cases of paroxysmal atrial fibrillation and 86 persistent/permanent cases. The main concomitant heart diseases were rheumatic mitral valve diseases. Atricure Dry Ablation System was used for 37 cases and Cardioblate Irrigated Ablation System for 54 cases...
April 1, 2009: Zhonghua Wai Ke za Zhi [Chinese Journal of Surgery]
https://www.readbyqxmd.com/read/18693117/surgical-left-atrial-appendage-occlusion-evaluation-of-a-novel-device-with-magnetic-resonance-imaging
#16
Sacha P Salzberg, Alan Marc Gillinov, Anelechi Anyanwu, Javier Castillo, Farzan Filsoufi, David H Adams
OBJECTIVE: Management of the left atrial appendage (LAA) is considered an important adjunct to ablation in cardiac surgical patients with atrial fibrillation (AF). However, current surgical techniques, both cut-and-sew and stapling, have been associated with incomplete LAA occlusion and complications. Using cardiac magnetic resonance imaging (MRI), we studied the safety and effectiveness of a new device for LAA occlusion in a primate model. METHODS: Seven adult baboons underwent off-pump placement of an LAA clip (AtriCure Inc...
October 2008: European Journal of Cardio-thoracic Surgery
https://www.readbyqxmd.com/read/17564059/-prevention-of-atrial-fibrillation-during-the-acute-postoperative-period-following-open-heart-surgery-by-pulmonary-vein-antrum-isolation-using-bipolar-radiofrequency-ablation
#17
Yoshio Nakayama, T Ueda, Y Hamada, T Kawata
We evaluated the effectiveness of pulmonary vein isolation (PVI) with bipolar radiofrequency ablation in prevention of atrial fibrillation during the acute postoperative period following open-heart surgery. Twenty-six patients with paroxysmal atrial fibrillation (PAF) underwent elective open-heart surgery combined with PVI using bipolar radiofrequency ablation from October 2004 to January 2006. They consisted of 17 male and 9 female with the mean age of 64.2 +/- 8.6 years. Their structural heart disease included coronary artery disease, aortic valve disease, and mitral valve disease...
June 2007: Kyobu Geka. the Japanese Journal of Thoracic Surgery
https://www.readbyqxmd.com/read/14587157/epicardial-electroanatomical-mapping-for-intraoperative-evaluation-of-bilateral-pulmonary-vein-isolation
#18
Pedro Adragão, João Queirós E Melo, Diogo Cavaco, Carlos Aguiar, José Neves, Miguel Abecasis, Teresa Santiago, Dipali Chotalal, Daniel Bonhorst, Ricardo Seabra-Gomes
UNLABELLED: Eight patients (pts; 2 female, 58 +/- 12 yrs) with paroxysmal atrial fibrillation (AF) (duration 39 +/- 20 months) underwent AF surgery, with concomitant myocardial revascularization in 2 pts and myomectomy in 1 (HOCM). AF was idiopathic in the remaining 5 pts. AF surgery consisted of bilateral isolation of the pulmonary veins (PV) using radiofrequency (RF) energy applied epicardially by a heptapolar catheter (Thermaline) in 5 pts and by a new system (Atricure) in 3 pts. For the former, each set of 7 simultaneous applications aimed at a maximum duration of 2 + 2 min...
July 2003: Portuguese Journal of Cardiology: An Official Journal of the Portuguese Society of Cardiology
https://www.readbyqxmd.com/read/12643412/atricure-bipolar-radiofrequency-clamp-for-intraoperative-ablation-of-atrial-fibrillation
#19
A Marc Gillinov, Patrick M McCarthy
PURPOSE: This work reports our initial evaluation and clinical experience with the Atricure bipolar radiofrequency (RF) system for intraoperative ablation of atrial fibrillation (AF). DESCRIPTION: The Atricure system includes a bipolar RF clamp and an RF generator. Lines of conduction block are created by delivery of RF energy (75 volts, 750 milliamps) to tissue compressed between the jaws of the clamp. Energy delivery is continued until the lesion is transmural, indicated by steady and reduced conductance between electrodes in the clamp...
December 2002: Annals of Thoracic Surgery
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