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radiofrequency ablations

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https://www.readbyqxmd.com/read/28732391/a-new-intraductal-radiofrequency-ablation-device-for-inoperable-biliopancreatic-tumors-complicated-by-obstructive-jaundice-the-ignite-1-study
#1
Wim Laleman, Schalk van der Merwe, Len Verbeke, Dirk Vanbeckevoort, Raymond Aerts, Hans Prenen, Eric Van Cutsem, Chris Verslype
Background and study aims Biliary stenting of unresectable malignant bile duct obstruction is generally accepted as the standard of care but it can be hampered by tumor ingrowth and stent dysfunction. We aimed to test the feasibility, safety, and biliary patency rate of a new endoscopically applied intraductal radiofrequency ablation (RFA) device. Patients and methods Eighteen patients with inoperable malignant biliary obstruction underwent endoscopic retrograde cholangiopancreatography (ERCP)-directed RFA and stenting...
July 21, 2017: Endoscopy
https://www.readbyqxmd.com/read/28731366/chondromyxoid-fibroma-of-the-distal-fibula-treated-by-percutaneous-radiofrequency-ablation
#2
Tamar Berenstein-Weyel, Ehud Lebel, Daniela Katz, Yaakov Applbaum, Amos Peyser
BACKGROUND: Percutaneous radiofrequency ablation (RFA) has been shown to be an effective treatment for soft tissue lesions and also benign bone tumors, especially osteoid osteoma. There are limited data regarding this technique in other bone tumors, specifically larger and more aggressive ones. PURPOSES: To describe the use of RFA as a definitive treatment and an alternative to traditional open surgery for the treatment of chondromyxoid fibroma (CMF), a benign but locally aggressive bone tumor...
May 2017: Journal of Orthopaedic Surgery
https://www.readbyqxmd.com/read/28730773/thermal-ablation-may-improve-outcomes-in-patients-with-colorectal-liver-metastasis-a-case-control-study
#3
Loukia S Poulou, Loukas Thanos, Panayiotis D Ziakas, Emmanouel Merikas, Apostolos Achimastos, Constantine Gennatas, Konstantinos N Syrigos
PURPOSE: Local thermal ablation may extend the scope of palliative therapy in patients with colorectal liver metastasis. We performed a retrospective, case-controlled study to compare patients with colorectal liver metastases that were treated with percutaneous radiofrequency (RF) or microwave (MW) thermal ablation, against the control group of chemotherapy alone. METHODS: We described baseline demographics, ablation sessions, procedure duration and related complications...
May 2017: Journal of B.U.ON.: Official Journal of the Balkan Union of Oncology
https://www.readbyqxmd.com/read/28730772/a-comparative-study-of-laparoscopic-microwave-ablation-with-laparoscopic-radiofrequency-ablation-for-colorectal-liver-metastasis
#4
Bo Yang, Yuwei Li
PURPOSE: Laparoscopic thermal ablation is a common alternative to surgical resection for treating colorectal liver metastasis, particularly for metastases located in difficult-to-reach regions. This study aimed to compare the short- and longterm outcomes of laparoscopic radiofrequency ablation (LRFA) and laparoscopic microwave ablation (LMWA) used for treating colorectal liver metastasis. METHODS: Data from patients with colorectal liver metastasis who had undergone LRFA or LMWA from January 2010 to January 2016 were examined...
May 2017: Journal of B.U.ON.: Official Journal of the Balkan Union of Oncology
https://www.readbyqxmd.com/read/28728304/-percutaneous-microwave-radiofrequency-ablation-liver-partition-and-portal-vein-embolization-for-planned-hepatectomy-for-colorectal-liver-metastases-with-insufficient-future-liver-remnant
#5
Y B Zhang, D F Hong, X M Fan, Z Y Luo, G L Shen
No abstract text is available yet for this article.
July 23, 2017: Zhonghua Zhong Liu za Zhi [Chinese Journal of Oncology]
https://www.readbyqxmd.com/read/28727719/intercostal-neuralgia-occurring-as-a-complication-of-splanchnic-nerve-radiofrequency-ablation-in-a-patient-with-chronic-pancreatitis
#6
Saipriya Tewari, Anil Agarwal, Sujeet K Gautam, Rajashree Madabushi
Our intent is to report a case of intercostal neuralgia occuring as a complication of splanchnic radiofreqency ablation (RFA), due to a breach in the integrity of the insulating sheath of the RFA needle.A 48-year-old man presented to our pain clinic with upper abdominal pain due to chronic pancreatitis, recalcitrant to medical management. We decided to perform bilateral splanchnic nerve RFA in this patient. After confirmation of bilateral correct needle placement under fluoroscopic guidance and sensorimotor testing, RFA was performed on the right side uneventfully...
July 2017: Pain Physician
https://www.readbyqxmd.com/read/28727707/continuing-anti-thrombotic-medication-during-low-to-intermediate-risk-spinal-procedures-a-retrospective-evaluation
#7
Noud van Helmond, Wesley Day, Kenneth B Chapman
BACKGROUND: The current American Society of Regional Anesthesia (ASRA) guidelines recommend discontinuing anti-thrombotic therapy prior to any interventional spine procedures to decrease the incidence of bleeding complications. However, discontinuing anti-thrombotics may pose considerable danger in terms of cerebrovascular and cardiovascular events. Recent evidence suggests that some spinal interventions may still be performed safely with anti-thrombotics on board and some practitioners thus elect to continue certain anti-thrombotics for these procedures...
July 2017: Pain Physician
https://www.readbyqxmd.com/read/28726002/ultrasound-guided-radiofrequency-ablation-using-a-new-electrode-with-an-electromagnetic-position-sensor-for-hepatic-tumors-difficult-to-place-an-electrode-a-preliminary-clinical-study
#8
Tae Wook Kang, Min Woo Lee, Kyoung Doo Song, Hyunchul Rhim, Hyo Keun Lim, Wonseok Kang, Kyunga Kim
PURPOSE: To evaluate whether a new electrode embedded with an electromagnetic position sensor (EMPS) improves the technical feasibility of percutaneous radiofrequency ablation (RFA) in patients with hepatic tumors difficult to place an electrode under ultrasonography (US) guidance and to assess short-term therapeutic efficacy and safety. MATERIALS AND METHODS: This prospective study was approved by the institutional review board, and written informed consent was obtained from all patients...
July 19, 2017: Cardiovascular and Interventional Radiology
https://www.readbyqxmd.com/read/28725325/left-atrial-appendage-volume-and-plasma-docosahexaenoic-acid-levels-are-associated-with-atrial-fibrillation-recurrence-after-catheter-ablation
#9
Tomoyuki Shiozawa, Kazunori Shimada, Gaku Sekita, Hidemori Hayashi, Haruna Tabuchi, Seiji Miura, Shinichiro Fujimoto, Tomoyasu Kadoguchi, Shohei Ouchi, Tatsuro Aikawa, Hamad Al Shahi, Shuhei Takahashi, Tetsuro Miyazaki, Masataka Sumiyoshi, Yuji Nakazato, Hiroyuki Daida
BACKGROUND: Risk factors for atrial fibrillation (AF) recurrence in patients who have undergone AF catheter ablation have not been fully clarified. The objective of this study was to assess whether the left atrium (LA) and LA appendage (LAA) volumes, and cardio-metabolic markers such as polyunsaturated fatty acids (PUFAs) levels were associated with AF recurrence. METHODS: Seventy-seven consecutive patients with AF (mean age, 59 ± 8 years; male, 81%; paroxysmal AF, 64%) undergoing catheter ablation were enrolled...
June 2017: Cardiology Research
https://www.readbyqxmd.com/read/28723304/the-quest-for-durable-lesions-in-catheter-ablation-of-atrial-fibrillation-technological-advances-in-radiofrequency-catheters-and-balloon-devices
#10
Tilman Maurer, Karl-Heinz Kuck
Atrial fibrillation is the most common cardiac arrhythmia and represents a growing clinical, social and economic challenge. Catheter ablation for symptomatic atrial fibrillation has evolved from an experimental procedure into a widespread therapy and offers a safe and effective treatment option. A prerequisite for durable PVI are transmural and contiguous circumferential lesions around the pulmonary veins. However, electrical reconnection of initially isolated pulmonary veins remains a primary concern and is a dominant factor for arrhythmia recurrence during long-term follow up...
July 19, 2017: Expert Review of Medical Devices
https://www.readbyqxmd.com/read/28722702/radiofrequency-ablation-of-hepatic-tumor-subjective-assessment-of-the-perilesional-vascular-network-on-contrast-enhanced-computed-tomography-before-and-after-ablation-can-reliably-predict-the-risk-of-local-recurrence
#11
Sireesha Yedururi, Silanath Terpenning, Sanjay Gupta, Patricia Fox, Sooyoung Shin Martin, Claudius Conrad, Evelyne M Loyer
OBJECTIVE: To determine whether simple, subjective analysis of the perilesional vascular network can predict the risk of local recurrence after radiofrequency ablation (RFA) of liver malignancies on contrast-enhanced computed tomography (CECT). METHODS: Contrast-enhanced computed tomography's 103 patients (59 men and 44 women; mean age, 63 years (range, 31-84 years) with 134 lesions who underwent RFA between 2000 and 2010 were retrospectively analyzed. The primary tumors include colorectal carcinoma (58 patients), hepatocellular carcinoma (n = 13), breast carcinoma (n = 8), neuroendocrine tumor (n = 5), and others (n = 19)...
July 2017: Journal of Computer Assisted Tomography
https://www.readbyqxmd.com/read/28721494/a-comprehensive-characterization-of-parameters-affecting-high-frequency-irreversible-electroporation-lesions
#12
Tyler Miklovic, Eduardo L Latouche, Matthew R DeWitt, Rafael V Davalos, Michael B Sano
Several focal therapies are being investigated clinically to treat tumors in which surgery is contraindicated. Many of these ablation techniques, such as radiofrequency ablation and microwave ablation, rely on thermal damage mechanisms which can put critical nerves or vasculature at risk. Irreversible electroporation (IRE) is a minimally invasive, non-thermal technique to destroy tumors. A series of short electric pulses create nanoscale defects in the cell membrane, eventually leading to cell death. Typical IRE protocols deliver a series of 50-100 µs monopolar pulses...
July 18, 2017: Annals of Biomedical Engineering
https://www.readbyqxmd.com/read/28721452/enhanced-efficacy-of-radiofrequency-ablation-for-hepatocellular-carcinoma-using-a-novel-vascular-disrupting-agent-ckd-516
#13
Su Jung Ham, YoonSeok Choi, Seul-I Lee, Jinil Kim, Young Il Kim, Jin Wook Chung, Kyung Won Kim
BACKGROUND: CKD-516 is a novel vascular disrupting agent that shuts down intratumoral blood flow. We therefore hypothesized that concomitant administration of CKD-516 would enhance the therapeutic efficacy of radiofrequency ablation (RFA) by reducing heat sink effects. We assessed the effects of the combination of CKD-516 and RFA in a rat orthotopic hepatocellular carcinoma (HCC) model. METHODS: Rat HCC cells (N1-S1) were engrafted into the hepatic lobe of Sprague-Dawley (SD) rats...
July 18, 2017: Hepatology International
https://www.readbyqxmd.com/read/28721349/hepatocellular-carcinoma-early-stage-management-challenges
#14
REVIEW
Derek J Erstad, Kenneth K Tanabe
Hepatocellular carcinoma (HCC) is a major cause of cancer death and is increasing in incidence. This review focuses on HCC surveillance and treatment of early-stage disease, which are essential to improving outcomes. Multiple societies have published HCC surveillance guidelines, but screening efforts have been limited by noncompliance and overall lack of testing for patients with undiagnosed chronic liver disease. Treatment of early-stage HCC has become increasingly complex due to expanding therapeutic options and better outcomes with established treatments...
2017: Journal of Hepatocellular Carcinoma
https://www.readbyqxmd.com/read/28720474/nitrous-oxide-cryotherapy-for-treatment-of-esophageal-squamous-cell-neoplasia-initial-multicenter-international-experience-with-a-novel-portable-cryoballoon-ablation-system-with-video
#15
Marcia Irene Canto, Julian Abrams, Hannah Kunzli, Bas Weusten, Yoshihiro Komatsu, Blair Jobe, Charles J Lightdale
BACKGROUND AND AIMS: Early esophageal squamous cell neoplasia (ESCN) can be successfully treated by endoscopic mucosal resection (EMR), endoscopic submucosal dissection (ESD), or radiofrequency ablation (RFA). A new portable, battery-powered cryotherapy system using nitrous oxide (cryoballoon focal ablation system (CbFAS) has been used for Barrett's esophagus. It consists of a small hand-held device containing liquid nitrous oxide, which converts to gas within a low-pressure-compliant through-the-scope balloon and freezes targeted mucosa in contact with the balloon...
July 15, 2017: Gastrointestinal Endoscopy
https://www.readbyqxmd.com/read/28718950/radiofrequency-ablation-for-the-management-of-thyroid-nodules-a-critical-appraisal-of-the-literature
#16
REVIEW
Roberto Cesareo, Andrea Palermo, Valerio Pasqualini, Roberto Cianni, Gianluigi Gaspa, Silvia Manfrini, Claudio Maurizio Pacella
The majority of benign thyroid nodules are asymptomatic, remain stable in size, and do not require treatment. However, a minority of patients with growing nodules may have local symptoms or cosmetic concerns, and thus demand surgical therapy. The timely use of ultrasound-guided, minimally invasive thermal therapies has changed the natural history of benign, enlarging thyroid nodules (TNs). These procedures produce persistent shrinkage of TNs and an improvement of local symptoms. Among the various procedures, percutaneous ethanol injection (PEI) represents the first-line treatment for thyroid cysts, while in solid cold nodules, laser and radiofrequency ablation (RFA) have proven to be very effective and safe techniques in producing significant volume reduction that remains stable over several years...
July 18, 2017: Clinical Endocrinology
https://www.readbyqxmd.com/read/28718606/-interventional-treatment-of-venous-insufficiency
#17
Barbara Ney, Rolf P Engelberger, Amin Dabiri, Jean-François Lüthi, Andreas Erdmann, Caroline Krieger, Sébastien Déglise, Thierry Merminod, Philippe Kern, Lucia Mazzolai
Interventional treatment of venous insufficiency has been revolutionized by endovascular techniques. Some of these techniques, and particularly thermal ablation (endovenous laser, radiofrequency) are now recommended as first-line therapy in the latest international guidelines. This is because of less post-operative pain, a shorter leave from employment and similar or lower recurrence rate. Endovenous techniques allow safer and more efficient treatment of certain particular conditions : small saphenous vein, ulcers, and recurrent varicose veins...
March 15, 2017: Revue Médicale Suisse
https://www.readbyqxmd.com/read/28718039/a%C3%A2-decade-of-atrial-fibrillation-ablation-shifts-in-patient-characteristics-and-procedural-outcomes
#18
C Teunissen, N Clappers, R J Hassink, J F van der Heijden, F H Wittkampf, P Loh
BACKGROUND: Over the past decade, radiofrequency catheter ablation (RFCA) of atrial fibrillation (AF) has evolved into a frequently performed procedure. The aim of this study was to monitor changes in patient characteristics, procedural characteristics, outcomes and complications over the past 10 years. METHODS: All consecutive patients who underwent primary RFCA treatment of AF in the University Medical Center Utrecht from 2005-2015 were included. In all patients, the primary ablation strategy was pulmonary vein (PV) antrum isolation without additional substrate modification...
July 17, 2017: Netherlands Heart Journal
https://www.readbyqxmd.com/read/28718001/a-new-device-for-fiducial-registration-of-image-guided-navigation-system-for-liver-rfa
#19
Nobutaka Doba, Hiroyuki Fukuda, Kazushi Numata, Yoshiteru Hao, Kouji Hara, Akito Nozaki, Masaaki Kondo, Makoto Chuma, Katsuaki Tanaka, Shigeo Takebayashi, Norihiro Koizumi, Akira Kobayashi, Junichi Tokuda, Shin Maeda
PURPOSE: Radiofrequency ablation for liver tumors (liver RFA) is widely performed under ultrasound guidance. However, discriminating between the tumor and the needle is often difficult because of cavitation caused by RFA-induced coagulation. An unclear ultrasound image can lead to complications and tumor residue. Therefore, image-guided navigation systems based on fiducial registration have been developed. Fiducial points are usually set on a patient's skin. But the use of internal fiducial points can improve the accuracy of navigation...
July 17, 2017: International Journal of Computer Assisted Radiology and Surgery
https://www.readbyqxmd.com/read/28716699/bridge-to-success-a-better-method-of-cryoablation-for-atrioventricular-nodal-reentrant-tachycardia-in-children
#20
Charitha D Reddy, Scott R Ceresnak, Kara S Motonaga, Kishor Avasarala, Christine Feller, Anthony Trela, Debra Hanisch, Anne M Dubin
BACKGROUND: Cryoablation for AVNRT is associated with higher recurrence rates than radiofrequency ablation(RF). Junctional tachycardia marks procedural success with RF, but no such indicator exists for cryoablation. OBJECTIVE: To determine the impact of voltage mapping plus longer ablation lesions on mid-term success of cryoablation for children with AVNRT. METHODS: A single-center retrospective analysis was performed of pediatric patients with AVNRT who underwent cryoablation from 2011-2015...
July 14, 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
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