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radiofrequency ablations

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https://www.readbyqxmd.com/read/28101960/effects-of-antegrade-accessory-pathway-conduction-on-qrs-terminal-vector-in-patients-with-pre-excitation-syndrome
#1
Renguang Liu, Q I Chen, Yang Chen, Yingjie Zhang, Zhaolong Xu, Gaopin Wang
BACKGROUND: Ventricle pre-excitation through accessory pathway changes QRS initial vector, and manifests as delta wave on ECG. However, QRS terminal vector can also be affected. METHODS: 158 patients who had single accessory pathway (AP) with antegrade conduction capacity were included and divided into 2 groups according to the ECG with or without delta wave. In 150 patients had delta wave (overt AP group) on ECG, classical pre-excitation syndrome was diagnosed before radiofrequency ablation (RFCA)...
January 19, 2017: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/28101217/safety-and-effectiveness-of-percutaneous-radiofrequency-ablation-in-early-stage-renal-cell-carcinoma
#2
Hang Liu, Changzhong Gao, Hualong Yu
The purpose of this study was to analyze the safety and effectiveness of percutaneous radiofrequency ablation (RFA) in early stage renal cell carcinoma. A total of 76 patients suffering from early stage renal cell carcinoma were selected and randomly assigned into the observation group (41 cases) or the control group (35 cases). Percutaneous RFA was used in the observation group, while retroperitoneoscopic radical operation of renal cell carcinoma was used in the control group, and the operative effects were compared...
December 2016: Oncology Letters
https://www.readbyqxmd.com/read/28101203/short-term-effect-analysis-of-radiofrequency-ablation-combined-chemotherapy-on-middle-and-late-period-non-small-cell-lung-cancer
#3
Shuo Yu, Zhen Zhou Wu, Hong Tao Si, Sai Yang, Guang Mao Liu, Xiao Dong Zhao
In this study, we investigated the effect of radiofrequency ablation (RFA) combined chemotherapy on middle and late period non-small cell lung cancer (NSCLC). In total, 85 cases of middle and late period NSCLC patients were selected, and were randomly divided into the RFA combined chemotherapy group, RFA treatment group and chemotherapy group. After treatment, the three groups were followed up for computed tomography (CT) scan, and were analyzed for the effect of RFA combined chemotherapy on middle and late period NSCLC...
December 2016: Oncology Letters
https://www.readbyqxmd.com/read/28100967/anesthetic-management-in-radiofrequency-catheter-ablation-of-ventricular-tachycardia
#4
REVIEW
Yi Deng, Payam S Naeini, Mehdi Razavi, Charles D Collard, Daniel A Tolpin, James M Anton
Radiofrequency catheter ablation is increasingly being used to treat patients who have ventricular tachycardia, and anesthesiologists frequently manage their perioperative care. This narrative review is intended to familiarize anesthesiologists with preprocedural, intraprocedural, and postprocedural implications of this ablation. Ventricular tachycardia typically arises from structural heart disease, most often from scar tissue after myocardial infarction. Many patients thus affected will benefit from radiofrequency catheter ablation in the electrophysiology laboratory to ablate the foci of arrhythmogenesis...
December 2016: Texas Heart Institute Journal
https://www.readbyqxmd.com/read/28099460/impact-of-radiofrequency-ablation-induced-glisson-s-capsule-associated-complications-in-patients-with-hepatocellular-carcinoma
#5
Toru Wakamatsu, Sadahisa Ogasawara, Tetsuhiro Chiba, Masayuki Yokoyama, Masanori Inoue, Naoya Kanogawa, Tomoko Saito, Eiichiro Suzuki, Yoshihiko Ooka, Akinobu Tawada, Osamu Yokosuka
BACKGROUND: Radiofrequency ablation (RFA) is commonly used to locally treat hepatocellular carcinoma (HCC). However, when tumors are close to the Glisson's capsule, RFA may induce injury in this region, complicating therapeutic efforts. We investigated the impact of RFA-induced Glisson's capsule-associated complications on liver function and prognosis of HCC patients. METHODS: We retrospectively reviewed our patient database and found 170 early-stage HCC patients treated via RFA from April 2004 to December 2012...
2017: PloS One
https://www.readbyqxmd.com/read/28099329/evaluation-of-efficacy-of-transcatheter-arterial-chemoembolization-combined-with-computed-tomography-guided-radiofrequency-ablation-for-hepatocellular-carcinoma-using-magnetic-resonance-diffusion-weighted-imaging-and-computed-tomography-perfusion-imaging-a
#6
Guo-Liang Shao, Jia-Ping Zheng, Li-Wen Guo, Yu-Tang Chen, Hui Zeng, Zheng Yao
BACKGROUND: The purpose of this study is to evaluate the efficacy of transcatheter arterial chemoembolization (TACE) combined with computed tomography-guided radiofrequency ablation (CT-RFA) in the treatment of hepatocellular carcinoma (HCC) using magnetic resonance diffusion weighted imaging (MR-DWI) and CT perfusion imaging (CT-PI). METHODS: From January 2008 to January 2014, a total of 522 HCC patients receiving TACE combined with CT-RFA were included in this study...
January 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28097603/comprehensive-preclinical-evaluation-of-a-multi-physics-model-of-liver-tumor-radiofrequency-ablation
#7
Chloé Audigier, Tommaso Mansi, Hervé Delingette, Saikiran Rapaka, Tiziano Passerini, Viorel Mihalef, Marie-Pierre Jolly, Raoul Pop, Michele Diana, Luc Soler, Ali Kamen, Dorin Comaniciu, Nicholas Ayache
PURPOSE: We aim at developing a framework for the validation of a subject-specific multi-physics model of liver tumor radiofrequency ablation (RFA). METHODS: The RFA computation becomes subject specific after several levels of personalization: geometrical and biophysical (hemodynamics, heat transfer and an extended cellular necrosis model). We present a comprehensive experimental setup combining multimodal, pre- and postoperative anatomical and functional images, as well as the interventional monitoring of intra-operative signals: the temperature and delivered power...
January 17, 2017: International Journal of Computer Assisted Radiology and Surgery
https://www.readbyqxmd.com/read/28096727/new-radiofrequency-device-to-reduce-bleeding-after-core-needle-biopsy-experimental-study-in-a-porcine-liver-model
#8
Sanghyeok Lim, Hyunchul Rhim, Min Woo Lee, Kyoung Doo Song, Tae Wook Kang, Young-Sun Kim, Hyo Keun Lim
OBJECTIVE: To evaluate the in vivo efficiency of the biopsy tract radiofrequency ablation for hemostasis after core biopsy of the liver in a porcine liver model, including situations with bleeding tendency and a larger (16-gauge) core needle. MATERIALS AND METHODS: A preliminary study was performed using one pig to determine optimal ablation parameters. For the main experiment, four pigs were assigned to different groups according to heparinization use and biopsy needle caliber...
January 2017: Korean Journal of Radiology: Official Journal of the Korean Radiological Society
https://www.readbyqxmd.com/read/28095774/multiple-focal-and-macroreentrant-left-atrial-tachycardias-originating-from-a-spontaneous-scar-at-the-contiguous-aorta-left-atrium-area-in-a-patient-with-hypertrophic-cardiomyopathy-a-case-report
#9
Kyoichiro Yazaki, Yoichi Ajiro, Fumiaki Mori, Masahiro Watanabe, Kei Tsukamoto, Takashi Saito, Keiko Mizobuchi, Kazunori Iwade
BACKGROUND: Spontaneous scar-related left atrial tachycardia (AT) is a rare arrhythmia. We describe a patient with hypertrophic cardiomyopathy (HCM) who developed multiple, both focal and macroreentrant left ATs associated with a spontaneous scar located at the aorta-left atrium (LA) contiguous area. CASE PRESENTATION: A 65-year-old man with HCM complained of palpitations. Twelve-lead electrocardiogram showed narrow QRS tachycardia with 2:1 atrioventricular conduction...
January 17, 2017: BMC Cardiovascular Disorders
https://www.readbyqxmd.com/read/28095539/a-proposed-method-for-upper-eyelid-and-infrabrow-tightening-using-a-transcutaneous-temperature-controlled-radiofrequency-device-with-opaque-plastic-eye-shields
#10
Douglas J Key, Lauren Boudreaux
BACKGROUND: Laxity of the eyelid and periorbital area, a common manifestation of aging, is usually addressed via blepharoplasty and/ or fat transfer. Given the trend toward safer, less invasive treatments preferred by those patients reticent to undergo more invasive procedures, viable alternatives have been sought. Transcutaneous temperature controlled radiofrequency (TTCRF) integrates non- invasive super cial RF treatment with automatic temperature feedback control of energy deposition, as a stimulator of overall collagen remodeling; however, the globe of the eye is particularly sensitive to RF energy...
November 1, 2016: Journal of Drugs in Dermatology: JDD
https://www.readbyqxmd.com/read/28091728/value-of-nonrigid-registration-of-pre-procedure-mr-with-post-procedure-ct-after-radiofrequency-ablation-for-hepatocellular-carcinoma
#11
Juil Park, Jeong Min Lee, Dong Ho Lee, Ijin Joo, Jeong Hee Yoon, Jin Young Park, Ernst Klotz
PURPOSE: To evaluate the value of pre-radiofrequency ablation (RFA) MR and post-RFA CT registration for the assessment of the therapeutic response of hepatocellular carcinoma (HCC). MATERIALS AND METHODS: A total of 178 patients with single HCC who received RFA as an initial treatment and had available pre-RFA MR and post-RFA CT images were included in this retrospective study. Two independent readers (one experienced radiologist, one inexperienced radiologist) scored the ablative margin (AM) of treated tumors on a four-point scale (1, residual tumor; 2, incomplete AM; 3, borderline AM; 4, sufficient AM), in two separate sessions: (1) visual comparison between pre-and post-RFA images; (2) with addition of nonrigid registration for pre- and post-RFA images...
January 13, 2017: Cardiovascular and Interventional Radiology
https://www.readbyqxmd.com/read/28090681/excess-of-exercise-increases-the-risk-of-atrial-fibrillation
#12
REVIEW
A Müssigbrodt, A Weber, J Mandrola, Y van Belle, S Richter, M Döring, A Arya, P Sommer, A Bollmann, G Hindricks
An interesting and still not well-understood example for old medical wisdom "Sola dosis facit venenum" is the increased prevalence of atrial fibrillation (AF) in athletes. Numerous studies have shown a fourfold to eightfold increased risk of AF in athletes compared to the normal population. Analysis of the existing data suggests a dose-dependent effect of exercise. Moderate exercise seems to have a protective effect and decreases the risk of AF, whereas excessive exercise seems to increase the risk of AF. The described cases illustrate clinical manifestations within the spectrum of AF in elderly athletes, that is, exercise-induced AF, vagal AF, chronic AF, and atrial flutter...
January 16, 2017: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/28089850/impact-of-radiofrequency-ablation-treatment-of-barrett-s-esophagus-on-esophageal-adenocarcinoma-a-comparative-modeling-analysis
#13
Sonja Kroep, Curtis R Heberle, Kit Curtius, Chung Yin Kong, Iris Lansdorp-Vogelaar, Ayman Ali, W Asher Wolf, Nicholas J Shaheen, Stuart J Spechler, Joel H Rubenstein, Norman S Nishioka, Stephen J Meltzer, William D Hazelton, Marjolein van Ballegooijen, Angela C Tramontano, G Scott Gazelle, E Georg Luebeck, John M Inadomi, Chin Hur
No abstract text is available yet for this article.
January 12, 2017: Clinical Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/28089454/the-role-of-adenosine-challenge-in-catheter-ablation-for-atrial-fibrillation-a-systematic-review-and-meta-analysis
#14
Alex J A McLellan, Saurabh Kumar, Catherine Smith, Liang-Han Ling, Sandeep Prabhu, Jonathan M Kalman, Peter M Kistler
AIMS: Adenosine may unmask dormant PV conduction and facilitate consolidation of PV isolation. We performed a meta-analysis to determine the impact of adenosine administration on clinical outcomes in patients undergoing PVI. METHODS: References and electronic databases reporting AF ablation and adenosine following PVI were searched through to 22nd November 2015. The impact of adenosine on freedom from AF was assessed in twenty publications after radiofrequency ablation (RFA), and in four publications after cryoablation to achieve PVI...
January 8, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28089202/cryoballoon-ablation-versus-radiofrequency-ablation-for-atrial-fibrillation
#15
REVIEW
Bruno Reissmann, Andreas Metzner, Karl-Heinz Kuck
No abstract text is available yet for this article.
December 14, 2016: Trends in Cardiovascular Medicine
https://www.readbyqxmd.com/read/28089031/role-of-radiofrequency-ablation-in-esophageal-squamous-dysplasia-and-early-neoplasia
#16
EDITORIAL
Wei-Chung Chen, Herbert Wolfsen
No abstract text is available yet for this article.
February 2017: Gastrointestinal Endoscopy
https://www.readbyqxmd.com/read/28081593/percutaneous-cryoablation-for-hepatocellular-carcinoma
#17
Kyoung Doo Song
Local ablation therapy is considered as a conventional treatment option for patients with early stage hepatocellular carcinoma (HCC). Although radiofrequency (RF) ablation is widely used for HCC, the use of cryoablation has been increasing as newer and safer cryoablation systems have developed. The thermodynamic mechanism of freezing and thawing used in cryoablation is the Joule-Thomson effect. Cryoablation destroys tissue via direct tissue destruction and vascular-related injury. A few recent comparative studies have shown that percutaneous cryoablation for HCCs is comparable to percutaneous RF ablation in terms of long term therapeutic outcomes and complications...
December 2016: Clinical and Molecular Hepatology
https://www.readbyqxmd.com/read/28081587/clinical-significance-and-predictive-factors-of-early-massive-recurrence-after-radiofrequency-ablation-in-patients-with-a-single-small-hepatocellular-carcinoma
#18
Ju-Yeon Cho, Moon Seok Choi, Gil Sun Lee, Won Sohn, Jemma Ahn, Dong-Hyun Sinn, Geum-Youn Gwak, Yong-Han Paik, Joon Hyeok Lee, Kwang Cheol Koh, Seung Woon Paik
BACKGROUND/AIMS: Radiofrequency ablation (RFA) is one of the most frequently applied curative treatments in patients with a single small hepatocellular carcinoma (HCC). However, the clinical significance of and risk factors for early massive recurrence after RFA-a dreadful event limiting further curative treatment-have not been fully evaluated. METHODS: In total, 438 patients with a single HCC of size ≤3 cm who underwent percutaneous RFA as an initial treatment between 2006 and 2009 were included...
December 2016: Clinical and Molecular Hepatology
https://www.readbyqxmd.com/read/28070766/radiofrequency-ablation-combined-with-transarterial-chemoembolization-versus-hepatectomy-for-patients-with-hepatocellular-carcinoma-within-milan-criteria-a-retrospective-case-control-study
#19
A K Bholee, K Peng, Z Zhou, J Chen, L Xu, Y Zhang, M Chen
PROPOSAL: To compare the effectiveness of TACE + RFA with hepatectomy in patients with HCC within Milan criteria. METHODS: It is a retrospective matched case-control study from January 2006 to December 2010 in a tertiary cancer center. 74 patients with HCC within Milan criteria initially treated with TACE + RFA were identified and compared with 148 matched controls selected from a pool of 782 patients who received hepatectomy. Patients were matched with respect to age, gender, tumor size and number, AFP and liver function test...
January 9, 2017: Clinical & Translational Oncology
https://www.readbyqxmd.com/read/28070060/the-brugada-syndrome%C3%A3-from-gene-to-therapy
#20
Antonio Curcio, Giuseppe Santarpia, Ciro Indolfi
It is almost a quarter of century that a pioneering work of 2 researchers named Brugada brought the entire scientific community to understanding the molecular, clinical, and electrophysiological aspects of a distinctive syndrome. It affects mainly young adults with syncope and/or sudden cardiac death caused by polymorphic ventricular tachycardia or ventricular fibrillation in the absence of any sign of cardiac degeneration or alteration. Although the involvement of the epicardial layer of the right ventricular outflow tract, and the requirement of pharmacologic challenge for unveiling concealed forms, have been fully characterized, many areas of uncertainties remain to be elucidated, such as the unpredictable usefulness of programmed ventricular stimulation, the role of radiofrequency catheter ablation for reducing ST-segment elevation, and the value of risk stratification in patients diagnosed with upper displacement of right precordial leads...
January 7, 2017: Circulation Journal: Official Journal of the Japanese Circulation Society
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