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radio-frequency ablation

Farid Bekara, Julian Vitse, Sergiu Fluieraru, Raphael Masson, Antoine De Runz, Vera Georgescu, Guillaume Bressy, Jean Louis Labbé, Benoit Chaput, Christian Herlin
Debridement is a crucial component of wound management. Recent technologies such as hydrosurgery (Versajet), ultrasound therapy (the MIST therapy device), or plasma-mediated bipolar radio-frequency ablation therapy (Coblation) seem to represent interesting alternatives for wound debridement. The purpose of this systematic review was to describe, evaluate, and compare these three recently developed methods for the management of chronic wounds. In January 2016, an electronic database search was conducted of MEDLINE, PubMed Central, and Embase for articles concerning these three innovative methods for the management of chronic wounds...
March 5, 2018: Archives of Plastic Surgery
Venkataram Mysore, Omprakash H Mahadevappa, Shyamanta Barua, Imran Majid, Vishalakshi Viswanath, Ramesh M Bhat, Suresh Talwar, Salim Thurakkal, Sanjeev J Aurangabadkar, Manas Chatterjee, Anil Ganjoo
Background: Currently, the standard protocol regarding the performance of procedures on patients receiving or having recently received isotretinoin (13- cis -retinoic acid) states that the procedures should not be performed. The recommendations in standard books and drug insert require discontinuation of isotretinoin for 6 months before performing cosmetic procedures, including waxing, dermabrasion, chemical peels, laser procedures, or incisional and excisional cold-steel surgery. These recommendations have been followed for over two decades despite little evidence for the stated increased risk of scarring...
October 2017: Journal of Cutaneous and Aesthetic Surgery
Alaa Abd-Elsayed, Antonioius Anis, Alan David Kaye
PURPOSE OF REVIEW: Peripheral nerve pain is common among patients with typical management including the use of pain medications, neuropathic agents, steroid injections, and nerve blocks. Additionally, the use of pulsed radiofrequency (PRF) and radiofrequency ablation (RFA) can be used in the management of chronic peripheral nerve pain. Previous studies investigating the effectiveness of RFA and PRF, typically case reports, have demonstrated that peripheral nerve RFA and PRF have the potential to provide relief of chronic pain for long duration...
January 25, 2018: Current Pain and Headache Reports
Suvi Renkonen, Antti A Mäkitie, Leif Bäck
Objectives: Benign enlargement of the lingual tonsils due to various causes may cause symptoms that warrant treatment. Conventional lingual tonsillectomy remains a challenging procedure, and there is no established standard procedure. We aimed to review the patients receiving different methods of lingual tonsil surgery for various indications at our institute. Methods: Retrospective clinical data on all patients with an ablative operation of the tongue base during the 8-year period between 2007 and 2014 at the Helsinki University Hospital, Helsinki, Finland, were reviewed...
2018: Clinical Medicine Insights. Ear, Nose and Throat
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
Xuyang Sun, Zhi-Zhu He, Zhong-Shan Deng, Yi-Xin Zhou, Jing Liu
BACKGROUND: Radio-frequency ablation has been an important physical method for tumor hyperthermia therapy. The conventional rigid electrode boards are often uncomfortable and inconvenient for performing surgery on irregular tumors, especially for those tumors near the joints, such as ankles, knee-joints or other facets like finger joints. MATERIAL AND METHODS: We proposed and demonstrated a highly conformable tumor ablation strategy through introducing liquid metal bath as conformable soft electrodes...
November 23, 2017: Minimally Invasive Therapy & Allied Technologies: MITAT
Cesare Corrado, Nejib Zemzemi
Computational models of heart electrophysiology achieved a considerable interest in the medical community as they represent a novel framework for the study of the mechanisms underpinning heart pathologies. The high demand of computational resources and the long computational time required to evaluate the model solution hamper the use of detailed computational models in clinical applications. In this paper, we present a multi-front eikonal algorithm that adapts the conduction velocity (CV) to the activation frequency of the tissue substrate...
January 2018: Medical Image Analysis
Hikmet Yorgun, Uğur Canpolat, Banu Evranos, Kudret Aytemir
Left atrial appendage (LAA) is a well-known source of focal atrial tachycardias (AT). Although radio-frequency (RF) energy is the most commonly used technique in such cases, there was an option other than epicardial approach when RF technique fails. Cryoballoon technology is primarily developed to be used for pulmonary vein isolation (PVI). Also, there was no report regarding the isolation of LAA by using cryo-balloon in patients with focal AT. In this case, for the first time in the literature, we successfully isolated the LAA because of failed attempts of RF ablation for focal AT in whom the surface electrogram showed a sinus rhythm while arrhythmia continues inside the LAA...
November 2017: Indian Pacing and Electrophysiology Journal
Jason G Andrade, Marc W Deyell, Mariano Badra, Jean Champagne, Marc Dubuc, Peter Leong-Sit, Laurent Macle, Paul Novak, Jean-Francois Roux, John Sapp, Anthony Tang, Atul Verma, George A Wells, Paul Khairy
INTRODUCTION: Pulmonary vein isolation (PVI) is an effective therapy for paroxysmal atrial fibrillation (AF), but it has limitations. The two most significant recent advances have centred on the integration of real-time quantitative assessment of catheter contact force into focal radio frequency (RF) ablation catheters and the development of dedicated ablation tools capable of achieving PVI with a single ablation lesion (Arctic Front cryoballoon, Medtronic, Minneapolis, MN, USA). Although each of these holds promise for improving the clinical success of catheter ablation of AF, there has not been a rigorous comparison of these advanced ablation technologies...
October 5, 2017: BMJ Open
Long Yu, Qi Jin, Zhaoye Zhou, Liqun Wu, Bin He
OBJECTIVE: Noninvasive imaging of cardiac electrical activity promises to provide important information regarding the underlying arrhythmic substrates for successful ablation intervention and further understanding of the mechanism of such lethal disease. The aim of this study is to evaluate the performance of a novel three-dimensional (3D) cardiac activation imaging technique to noninvasively localize and image origins of focal ventricular arrhythmias in patients undergoing radio frequency ablation...
October 2, 2017: IEEE Transactions on Bio-medical Engineering
Dwight A Meglan, Wener Lv, Richard J Cohen, Cameron N Riviere
BACKGROUND: Present treatments for ventricular tachycardia have significant drawbacks. To ameliorate these drawbacks, it may be advantageous to employ an epicardial robotic walker that performs mapping and ablation with precise control of needle insertion depth. This paper examines the feasibility of such a system. METHODS: This paper describes techniques for epicardial mapping and depth-controlled ablation with the robotic walker. The mapping technique developed for the current form of the system uses a single equivalent moving dipole model combined with the navigation capability of the walker...
2017: Robotic Surgery: Research and Reviews
T A Bin Traiki, O M Fisher, S J Valle, R N Parikh, M A Kozman, D Glenn, M Power, W Liauw, N A Alzahrani, D L Morris
PURPOSE: To analyze the outcomes of patients developing pulmonary metastases (PM) following cytoreductive surgery (CRS) and perioperative intra-peritoneal chemotherapy (IPC) for colorectal cancer (CRC) with peritoneal carcinomatosis. PATIENTS AND METHODS: A retrospective analysis of patients undergoing CRS/IPC for CRC from 1996 to 2016 was performed. Lung-specific disease-free and patient overall survival was analyzed. Patients undergoing percutaneous lung ablative therapy (PLAT) for PM were compared to patients receiving systemic chemotherapy alone...
October 2017: European Journal of Surgical Oncology
Maurizio Soresi, Anna Licata, Lydia Giannitrapani, Giuseppe Montalto
No abstract text is available yet for this article.
September 2017: Annals of Hepatology
Mayur Brahmania, Osman Ahmed, Melissa Kelley, David Wong, Matthew Kowgier, Korosh Khalili, Rob Beecroft, Eberhard L Renner, Hemant Shah, Jordan Feld, Harry L A Janssen, Morris Sherman
INTRODUCTION: Radiofrequency ablation (RFA) is a recommended curative intent treatment option for patients with early stage hepatocellular carcinoma (HCC). We investigated if wait times for RFA were associated with residual tumor, tumor recurrence, need for liver transplantation, or death. MATERIAL AND METHODS: We conducted a retrospective study of patients diagnosed with HCC between January 2010 and December 2013 presenting to University Health Network (UHN) in Toronto, Canada...
September 2017: Annals of Hepatology
Luming Sun, Gang Zou, Fenhe Zhou, Yingjun Yang, Dick Oepkes, Tao Duan
OBJECTIVES: To report a cohort of dichorionic triamniotic (DCTA) triplets with access to contemporary fetal interventions. DESIGN: Prospective study. SETTING: A regional referral center for the diagnosis and management of complicated multiple pregnancies. POPULATION: All DCTA triplets receiving consultation and prenatal care at our center from 2010 to 2015. METHODS: The following management alternatives for DCTA were offered: 1) expectant management; 2) reduction of one or two fetus of the monochorionic (MC) component using radiofrequency ablation (RFA) after 16 weeks or potassium chloride (KCL) before 16 weeks, respectively; 3) reduction of the isolated fetus using KCL before 16 weeks...
October 3, 2017: Journal of Maternal-fetal & Neonatal Medicine
Amin Amali, Maziar Motiee-Langroudi, Babak Saedi, Sara Rahavi-Ezabadi, Ali Karimian, Behrooz Amirzargar
STUDY OBJECTIVES: To compare the efficacy of modified radiofrequency tissue ablation (MRFTA) with uvulopalatopharyngoplasty (UPPP) based on both subjective and objective outcome measures in patients with mild to moderate obstructive sleep apnea (OSA). METHODS: Forty patients with mild to moderate OSA were randomly divided into UPPP and MRFTA groups. Evaluation was made based on the apneahypopnea index (AHI), Sleep Apnea Quality of Life Index (SAQLI) and Epworth Sleepiness Scale (ESS), immediately before the surgery and 6 months postoperatively...
September 15, 2017: Journal of Clinical Sleep Medicine: JCSM: Official Publication of the American Academy of Sleep Medicine
Dagmar Kollmann, Nazia Selzner, Markus Selzner
BACKGROUND: Liver transplantation (LT) is the only cure for patients diagnosed with unresectable hepatocellular carcinoma (HCC), and HCC has become the leading indication for LT in the USA. The shortage of liver grafts results in a significant waiting time for LT with the risk of tumour progression. Treating HCCs during the waiting time prior to transplantation (bridging therapy) is an attractive strategy to reduce the risk of exceeding the tumour criteria for transplantation. Studies on bridging therapy are heterogenous and due to ethical issues, mostly of retrospective design...
July 28, 2017: Langenbeck's Archives of Surgery
Anurag Chahal, Prathiba Rajalakshmi, Shah A Khan, Shishir Rastogi, Deep N Srivastava, Shivanand Gamanagatti
PURPOSE: To evaluate the technical and clinical success of radiofrequency ablation of osteoid osteoma and analyze the factors responsible for clinical success. We also tried to investigate the role of follow-up computed tomography (CT) imaging. MATERIALS AND METHODS: This is a prospective study approved by the institute's ethics committee involving 87 patients with appendicular osteoid osteoma. CT-guided radio frequency ablation was performed using a bipolar ablation system...
April 2017: Indian Journal of Radiology & Imaging
Giada Gerboni, Joseph D Greer, Paul F Laeseke, Gloria L Hwang, Allison M Okamura
Robotic needle steering will improve percutaneous radio-frequency ablation (RFA) in the liver by performing distributed ablations without requiring multiple punctures of the liver capsule, thus enabling the treatment of large or multifocal tumors. However, state-of-the-art asymmetric-tip robotic needle steering systems do not yet achieve clinically relevant curvature. This work presents the design and development of a highly articulated needle that enables distributed RFA in liver tissue under ultrasound (US) image guidance...
July 2017: IEEE Robotics and Automation Letters
Elena A Kaye, Majid Maybody, Sebastien Monette, Stephen B Solomon, Amitabh Gulati
BACKGROUND: Dysfunction of the Sacroiliac Joint (SIJ) is one of the key sources of low back pain. For prolonged pain relief, some patients undergo fluoroscopic guided radio-frequency (RF) ablation of SIJ, during which a number of RF probes are inserted to create thermal lesions that disrupt the posterior sacral nerve supply. This procedure is minimally invasive, laborious, time-consuming and costly. To study if High Intensity Focused Ultrasound (HIFU) ablation is a feasible alternative approach to SIJ pain treatment, we performed experiments using HIFU to ablate SIJ in the swine model...
2017: Journal of Therapeutic Ultrasound
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