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RF ablation

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https://www.readbyqxmd.com/read/29350539/effectiveness-and-safety-of-ct-guided-percutaneous-radiofrequency-ablation-of-adrenal-metastases
#1
Kang Zhou, Jie Pan, Ning Yang, Hai-Feng Shi, Jian Cao, Yu-Mei Li, Hong-Zhi Zhang, Ke-Fei Wang, Shao-Hui Chen
OBJECTIVE: The imaging-guided percutaneous radiofrequency (RF) ablation of adrenal metastases is a relatively new treatment procedure, compared to the more widespread application of the technique for the treatment of liver and renal cancers, the present study aims to evaluate the safety and efficacy of the computed tomography (CT)-guided percutaneous radiofrequency ablation of adrenal metastases in a cohort of patients. METHODS: Thirty-three patients with 38 adrenal metastases who received percutaneous CT-guided radiofrequency ablation between 2012 to 2015 were retrospectively reviewed...
January 19, 2018: British Journal of Radiology
https://www.readbyqxmd.com/read/29345381/durable-lesion-formation-while-avoiding-esophageal-injury-during-ablation-of-atrial-fibrillation-lessons-learned-from-late-gadolinium-mr-imaging
#2
Mihail G Chelu, Alan K Morris, Eugene G Kholmovski, Jordan B King, Gagandeep Kaur, Michelle A Silver, Joshua E Cates, Frederick T Han, Nassir F Marrouche
INTRODUCTION: Adequate catheter/atrial tissue contact is critical for lesion formation during radiofrequency (RF) ablation of atrial fibrillation (AF). Late gadolinium enhancement magnetic resonance imaging (LGE-MRI) is a unique tool for the evaluation of lesion formation and detection of acute esophageal injury. METHODS: LGE-MRIs were obtained prior, within 24 hours of, and at 115±62 days after first AF ablation in 36 patients. The Visitag module of CARTO3 was used to collect contact force (CF) and duration from a CF sensing ablation catheter for each registered ablation point...
January 18, 2018: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/29336937/the-combination-of-stereo-eeg-and-radiofrequency-ablation
#3
Hélène Catenoix, Pierre Bourdillon, Marc Guénot, Jean Isnard
SEEG-guided radiofrequency thermocoagulation (SEEG-guided RFTC), a combination of Stereo-electroencephalography (SEEG) and radiofrequency thermocoagulation (RFTC), has been performed since 2001 in drug resistant epilepsy. The interest of this procedure is to aim at total or partial destruction of the epileptogenic zone, as tailored in each individual patient by the SEEG exploration. These multiple SEEG-guided RFTC lesions of epileptic foci are produced by using a radiofrequency generator connected to the electrode contacts...
January 9, 2018: Epilepsy Research
https://www.readbyqxmd.com/read/29326290/functional-lesional-neurosurgery-for-tremor-a-systematic-review-and-meta-analysis
#4
REVIEW
Sebastian R Schreglmann, Joachim K Krauss, Jin Woo Chang, Kailash P Bhatia, Georg Kägi
BACKGROUND: This work evaluates the consistency, effect size and incidence of persistent side effects of lesional neurosurgical interventions in the treatment of tremor due to Parkinson's disease (PD), essential tremor (ET), multiple sclerosis (MS) and midbrain lesions. METHODS: Systematic review and meta-analysis according to PRISMA-P guidelines. Random effects meta-analysis of standardised mean difference based on a peer-reviewed protocol (PROSPERO no. CRD42016048049)...
January 11, 2018: Journal of Neurology, Neurosurgery, and Psychiatry
https://www.readbyqxmd.com/read/29325036/evaluation-of-left-atrial-linear-ablation-using-contiguous-and-optimized-radiofrequency-lesions-the-aline-study
#5
Michael Wolf, Milad El Haddad, Joël Fedida, Philippe Taghji, Katarina Van Beeumen, Teresa Strisciuglio, Jan De Pooter, Caroline Lepièce, Yves Vandekerckhove, René Tavernier, Mattias Duytschaever, Sébastien Knecht
Aims: Achieving block across linear lesions is challenging. We prospectively evaluated radiofrequency (RF) linear ablation at the roof and mitral isthmus (MI) using point-by-point contiguous and optimized RF lesions. Methods and results: Forty-one consecutive patients with symptomatic persistent AF underwent stepwise contact force (CF)-guided catheter ablation during ongoing AF. A single linear set of RF lesions was delivered at the roof and posterior MI according to the 'Atrial LINEar' (ALINE) criteria, i...
January 8, 2018: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/29315411/improving-procedural-and-one-year-outcome-after-contact-force-guided-pulmonary-vein-isolation-the-role-of-interlesion-distance-ablation-index-and-contact-force-variability-in-the-close-protocol
#6
Thomas Phlips, Philippe Taghji, Milad El Haddad, Michael Wolf, Sébastien Knecht, Yves Vandekerckhove, René Tavernier, Mattias Duytschaever
Aims: We have recently shown that a contact force (CF)-guided ablation protocol respecting region-specific criteria of lesion contiguity and lesion depth ('CLOSE' protocol) is associated with high incidence of acute durable pulmonary vein (PV) isolation (PVI) and a high single-procedure arrhythmia-free survival at 1 year. In the present study, we compared efficiency, safety, and efficacy of 'CLOSE'-guided PVI to conventional CF-guided PVI (CONV-CF). Methods and results: Fifty consecutive paroxysmal atrial fibrillation (AF) patients underwent PV encircling using a CF-sensing catheter targeting an interlesion distance (ILD) ≤6 mm and ablation index (AI) ≥400 and ≥550 at posterior and anterior wall ('CLOSE' group)...
January 4, 2018: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/29305676/impact-of-3d-mapping-on-procedural-characteristics-and-outcomes-in-cryoballoon-pulmonary-vein-isolation-for-atrial-fibrillation
#7
Emily N Guhl, Evan Adelstein, Andrew Voigt, Norman C Wang, Samir Saba, Sandeep K Jain
PURPOSE: The use of 3D mapping during cryoballoon pulmonary vein isolation (PVI) is optional with added cost but potential benefit in aiding vein identification, reducing fluoroscopy, and post-ablation testing. Data are limited evaluating procedural characteristics and outcomes in patients undergoing cryoballoon PVI with mapping vs. no mapping. In the present study, we compare procedural characteristics and recurrence-free rates in patients undergoing cryoballoon PVI among patients using CARTO®, NavX™, or no mapping system...
January 5, 2018: Journal of Interventional Cardiac Electrophysiology: An International Journal of Arrhythmias and Pacing
https://www.readbyqxmd.com/read/29298526/comparison-of-radiofrequency-and-transoral-robotic-surgery-in-obstructive-sleep-apnea-syndrome-treatment
#8
Engin Aynacı, Murat Karaman, Burak Kerşin, Mahmut Ozan Fındık
INTRODUCTION: Radiofrequency tissue ablation (RFTA) and transoral robotic surgery (TORS) are the methods used in OSAS surgery. We also aimed to compare the advantages and disadvantages of RF and TORS as treatment methods applied in OSAS patients in terms of many parameters, especially apnea hypopnea index (AHI). MATERIALS AND METHODS: Patients were classified by performing a detailed examination and evaluation before surgery. 20 patients treated with anterior palatoplasty and uvulectomy -/+ tonsillectomy + RFTA (17 males, 3 females) and 20 patients treated with anterior palatoplasty and uvulectomy -/+  tonsillectomy + TORS (16 males, 4 females) were included in the study...
January 3, 2018: Acta Oto-laryngologica
https://www.readbyqxmd.com/read/29289359/safety-of-uninterrupted-periprocedural-edoxaban-versus-phenprocoumon-for-patients-who-underwent-left-atrial-catheter-ablation-procedures
#9
Marc Kottmaier, Felix Bourier, Hannah Pausch, Tilko Reents, Verena Semmler, Martha Telishevska, Katharina Koch-Büttner, Carsten Lennerz, Sarah Lengauer, Marielouise Kornmayer, Elena Rousseva, Stephanie Brooks, Amir Brkic, Sonia Ammar-Busch, Bernhard Kaess, Roger Dillier, Christian Grebmer, Christoph Kolb, Gabriele Hessling, Isabel Deisenhofer
Data about the safety of edoxaban in patients who underwent left atrial (LA) radiofrequency (RF) ablation procedures are lacking. This study sought to compare the safety of uninterrupted edoxaban with uninterrupted phenprocoumon administration during LA RF ablation for atrial fibrillation and atrial tachycardia. In total, 231 patients (mean age 64 ± 11years, male 71%) who underwent LA RF ablation under continuous oral anticoagulation (OAC) with edoxaban or phenprocoumon were included in the study. Patients on uninterrupted edoxaban (60 mg or 30 mg/day for at least 4 weeks) were matched for gender, age and type of arrhythmia with 2 patients on uninterrupted phenprocoumon (international normalized ratio 2 to 3)...
November 23, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/29286395/benefits-of-cardiac-resynchronization-therapy-in-an-asynchronous-heart-failure-model-induced-by-left-bundle-branch-ablation-and-rapid-pacing
#10
Jingfeng Wang, Zhenning Nie, Haiyan Chen, Xianhong Shu, Zhaohua Yang, Ruiming Yao, Yangang Su, Junbo Ge
It is now well recognized that heart failure (HF) patients with left bundle branch block (LBBB) derive substantial clinical benefits from cardiac resynchronization therapy (CRT), and LBBB has become one of the important predictors for CRT response. The conventional tachypacing-induced HF model has several major limitations, including absence of stable LBBB and rapid reversal of left ventricular (LV) dysfunction after cessation of pacing. Hence, it is essential to establish an optimal model of chronic HF with isolated LBBB for studying CRT benefits...
December 11, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29283343/cardiac-lesion-mapping-in-vivo-using-intracardiac-myocardial-elastography
#11
Ethan Bunting, Clement Papadacci, Elaine Wan, Vincent Sayseng, Julien Grondin, Elisa E Konofagou
Radio frequency (RF) ablation of the myocardium is used to treat various cardiac arrhythmias. The size, spacing, and transmurality of lesions have been shown to affect the success of the ablation procedure; however, there is currently no method to directly image the size and formation of ablation lesions in real time. Intracardiac myocardial elastography (ME) has been previously used to image the decrease in cardiac strain during systole in the ablated region as a result of the lesion formation. However, the feasibility of imaging multiple lesions and identifying the presence of gaps between lesions has not yet been investigated...
January 2018: IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
https://www.readbyqxmd.com/read/29273283/stereotactic-radiofrequency-ablation-for-breast-cancer-liver-metastases
#12
Reto Bale, Michael Richter, Martina Dünser, Elliot Levy, Wolfgang Buchberger, Peter Schullian
PURPOSE: To evaluate outcomes in patients with liver metastases from breast cancer treated with stereotactic radiofrequency (RF) ablation. MATERIALS AND METHODS: A retrospective analysis of 29 stereotactic RF ablation treatment sessions in 26 consecutive patients with 64 biopsy-proven breast cancer liver metastases (BCLMs) was conducted. Patients were included only if systemic treatment failed and all visible BCLMs were treatable. RESULTS: Primary and secondary technical success rates were 96...
December 19, 2017: Journal of Vascular and Interventional Radiology: JVIR
https://www.readbyqxmd.com/read/29258733/percutaneous-radiofrequency-ablation-of-obstructive-right-ventricular-giant-myxoma
#13
Min-Juan Zheng, Jian Yang, Guang-Bin He, Xiao-Dong Zhou, Li-Wen Liu
Surgical resection is the conventional therapeutic action for patients with an obstructive cardiac tumor. However, for patients in poor clinical condition, cardiac surgery can be risky. We report on the successful percutaneous radiofrequency (RF) ablation treatment of a right ventricular giant myxoma in a 70-year-old female with right ventricular outflow tract (RVOT) and pulmonary artery stenosis, who was unable to tolerate surgery. The treatment was effective in relieving RVOT stenosis and improving symptoms...
December 16, 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/29250297/pulmonary-vein-isolation-with-the-multipolar-nmarq%C3%A2-ablation-catheter-efficacy-and-safety-in-acute-and-long-term-follow-up
#14
REVIEW
Siebermair Johannes, Michelle Silver, Wakili Reza
Pulmonary vein isolation (PVI) is an established therapy for atrial fibrillation (AF). One challenge in the catheter-based treatment of this arrhythmia is to develop an effective and safe ablation approach to achieve durable and consistent lesions around the PVs. The multipolar irrigated radiofrequency (RF) ablation catheter nMARQTM was designed as a single-shot device with the aim to achieve these goals. This article reviews the current literature with respect to acute- and long- term success rates after PVI with this circular mapping and ablation device...
April 2017: Journal of Atrial Fibrillation
https://www.readbyqxmd.com/read/29250292/comparison-of-the-efficacy-of-pvac%C3%A2-and-nmarq%C3%A2-for-paroxysmal-atrial-fibrillation
#15
REVIEW
Avishag Laish-Farkash, Mahmoud Suleiman
Pulmonary vein isolation (PVI) has become the mainstay of therapy for atrial fibrillation (AF) and one of the most frequently performed procedures in the cardiac electrophysiology laboratory. PVI by a single-tip radiofrequency (RF) ablation catheter remains a complex and time-consuming procedure, especially in centers with limited experience. In order to simplify the PVI procedure, to shorten it and reduce the complication rate, circular multi-electrode catheters were introduced for simultaneous mapping and ablation...
April 2017: Journal of Atrial Fibrillation
https://www.readbyqxmd.com/read/29250289/mechanistic-insights-into-durable-pulmonary-vein-isolation-achieved-by-second-generation-cryoballoon-ablation
#16
Yasuo Okumura, Ichiro Watanabe, Kazuki Iso, Keiko Takahashi, Koichi Nagashima, Kazumasa Sonoda, Hiroaki Mano, Naoko Yamaguchi, Rikitake Kogawa, Ryuta Watanabe, Masaru Arai, Kimie Ohkubo, Sayaka Kurokawa, Toshiko Nakai, Atsushi Hirayama
Background: The mechanism explaining the efficacy of cryoballoon ablation (CBA) for atrial fibrillation has not been clarified. Methods and Results: We compared lesion characteristics between patients in whom pulmonary vein isolation (PVI) was performed by CBA (n=56) and those by contact force (CF)-based RF ablation (n=56). We evaluated the 3-dimensional PV morphology before and after cryoballoon inflation. After PVI, a 3D left atrial voltage map was created. Pacing (10 mA and 2 ms) was performed within the low voltage area from the ablation line, and electrically unexcitable ablated tissue was identified...
April 2017: Journal of Atrial Fibrillation
https://www.readbyqxmd.com/read/29250282/use-of-oral-steroid-and-its-effects-on-atrial-fibrillation-recurrence-and-inflammatory-cytokines-post-ablation-the-steroid-af-study
#17
Sandia Iskandar, Madhu Reddy, Muhammad R Afzal, Johnson Rajasingh, Moustapha Atoui, Madhav Lavu, Donita Atkins, Sudha Bommana, Linda Umbarger, Misty Jaeger, Rhea Pimentel, Raghuveer Dendi, Martin Emert, Mohit Turagam, Luigi Di Biase, Andrea Natale, Dhanunjaya Lakkireddy
Background: Use of corticosteroids before and after atrial fibrillation (AF) ablation can decrease acute inflammation and reduce AF recurrence. Purpose: To assess the efficacy of oral prednisone in improving the outcomes of pulmonary vein isolation with radiofrequency ablation and its effect on inflammatory cytokine. Methods: A total of 60 patients with paroxysmal AF undergoing radiofrequency ablation were randomized (1:1) to receive either 3 doses of 60 mg daily of oral prednisone or a placebo...
February 2017: Journal of Atrial Fibrillation
https://www.readbyqxmd.com/read/29250270/high-voltage-guided-pulmonary-vein-isolation-in-paroxysmal-atrial-fibrillation
#18
Usama Boles, Enes E Gul, Andres Enriquez, Howard Lee, Dave Riegert, Adrian Andres, Adrian Baranchuk, Damian Redfearn, Benedict Glover, Chris Simpson, Hoshiar Abdollah, Kevin Michael
Background: Ablation of the pulmonary vein (PV) antrum using an electroanatomic mapping system is standard of care for point-by-point pulmonary vein isolation (PVI). Focused ablation at critical areas is more likely to achieve intra-procedural PV isolation and decrease the likelihood for reconnection and recurrence of atrial fibrillation (AF). Therefore this prospective pilot study is to investigate the short-term outcome of a voltage-guided circumferential PV ablation (CPVA) strategy...
February 2017: Journal of Atrial Fibrillation
https://www.readbyqxmd.com/read/29250230/ablation-of-background-tachycardia-in-long-standing-atrial-fibrillation-improving-the-outcomes-by-unmasking-a-residual-atrial-fibrillation-perpetuator
#19
José Carlos Pachón-M, Enrique I Pachón-M, Tomas G Santillana P, Tasso Julio Lobo, Carlos Thiene C Pachón, Juán Carlos Pachón-M, Remy Nelson Albornoz V, Juán Carlos Zerpa A, Felipe Ortencio, Mauricio Arruda
Background: Catheter ablation of long-standing persistent AF (LSAF) remains challenging. Since AF-Nest (AFN) description, we have observed that a stable, protected, fast source firing, namely "Background Tachycardia"(BT), could be hidden beneath the chaotic AF. Following pulmonary vein isolation (PVI)+AFN ablation one or more BT may arise or be induced in 30-40% of patients, which could be the culprit forAF maintenance and ablation recurrences. Methods and Results: We studied 114 patients, from 322 sequential LSAF regular ablations, having spontaneous or induced residual BT after EGM-guided PVI+AFN ablation of LSAF; 55...
August 2017: Journal of Atrial Fibrillation
https://www.readbyqxmd.com/read/29250227/routine-use-of-intracardiac-echocardiography-for-atrial-flutter-ablation-is-associated-with-reduced-fluoroscopy-time-but-not-with-a-reduction-of-radiofrequency-energy-delivery-time
#20
Dalibor Herman, Pavel Osmancik, Jana Zdarska, Radka Prochazkova
Background: The ablation of cavotricuspid-isthmus (CTI) atrial flutter (AFL) dependent atrial flutter could be difficult in patients with complex anatomy of the CTI.The aim of the study was to assess whether the use of intracardiac echocardiography (ICE) was associated with less fluoroscopy time and faster ablations of cavotricuspid isthmus dependent atrial flutter (CTI-AFL). Methods: Patients with an indication for an ablation of a CTI-AFL were enrolled. Patients in which ablation of a CTI-AFLas part of an atrial fibrillation ablation were not included...
August 2017: Journal of Atrial Fibrillation
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