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https://www.readbyqxmd.com/read/28441822/-clinical-features-and-outcomes-of-radiofrequency-catheter-ablation-of-atrial-flutter-in-children
#1
H Jiang, X M Li, Y Zhang, H J Liu, M T Li, H Y Ge
Objective: To explore the clinical features of atrial flutter (AFL) and evaluate the efficacy of radiofrequency catheter ablation (RFCA) for AFL in children. Method: Data were collected and analyzed on 50 consecutive pediatric AFL patients (male 37/female 13) who underwent electrophysiology study and RFCA from February 2009 to November 2016 in a case observational study. The average age was (6.2±3.5) years and body weight was (23.7±13.5) kg. Heart structure was normal in 26 patients. Twenty-four patients had congenital heart disease (CHD) and among them 22 patients underwent repaired surgery before...
April 2, 2017: Zhonghua Er Ke za Zhi. Chinese Journal of Pediatrics
https://www.readbyqxmd.com/read/28441818/-to-further-deepen-the-understanding-of-radiofrequency-a-blation-in-the-treatment-of-pediatric-arrhythmia
#2
F Li
No abstract text is available yet for this article.
April 2, 2017: Zhonghua Er Ke za Zhi. Chinese Journal of Pediatrics
https://www.readbyqxmd.com/read/28441700/ultrasound-based-renal-sympathetic-denervation-for-the-treatment-of-therapy-resistant-hypertension-a-single-center-experience
#3
Karl Fengler, Robert Höllriegel, Thomas Okon, Thomas Stiermaier, Karl-Philipp Rommel, Stephan Blazek, Christian Besler, Max von Roeder, Martin Petzold, Gerhard Schuler, Philipp Lurz
INTRODUCTION: The effectiveness of renal sympathetic denervation (RDN) as a treatment for therapy-resistant hypertension has been doubted as the Simplicity-HTN-3 trial was unable to show any treatment benefit over sham procedure. This might partly be explained by a high procedural variability in treatment with radiofrequency-based catheters. Recently, newer systems for RDN, like ultrasound-based devices, have been introduced into practice. To date however, data on their effectiveness for the treatment of resistant hypertension are scarce...
June 2017: Journal of Hypertension
https://www.readbyqxmd.com/read/28441152/cryoablation-in-the-management-of-barrett-s-esophagus
#4
Anouk Overwater, Bas L A M Weusten
PURPOSE OF REVIEW: Providing an overview on types of cryotherapy for esophageal application and their role in the management of Barrett's esophagus. RECENT FINDINGS: Recent studies have involved multiple types of cryotherapy including cryospray techniques that use either liquid nitrogen or carbon dioxide as the cryogenic fluid, and the CryoBalloon focal ablation device that uses nitrous oxide. Overall, studies report cryotherapy to be safe and effective in eradicating Barrett's epithelium...
April 24, 2017: Current Opinion in Gastroenterology
https://www.readbyqxmd.com/read/28440351/characterization-of-benign-thyroid-nodules-with-hyperspace-hyper-spectral-analysis-for-characterization-in-echography-before-and-after-percutaneous-laser-ablation-a-pilot-study
#5
Simona Granchi, Enrico Vannacci, Elena Biagi
AIMS: To evaluate the capability of the HyperSPACE (Hyper SPectral Analysis for Characterization in Echography) method in tissue characterization, in order to provide information for the laser treatment of benign thyroid nodules in respect of conventional B-mode images and elastography. MATERIAL AND METHODS: The method, based on the spectral analysis of the raw radiofrequency ultrasonic signal, was applied to characterize the nodule before and after laser treatment...
April 22, 2017: Medical Ultrasonography
https://www.readbyqxmd.com/read/28440249/innovations-in-pediatric-cataract-surgery
#6
Sudarshan Kumar Khokhar, Ganesh Pillay, Esha Agarwal, Manish Mahabir
Advances in technology have made surgery in children safer and faster. The management of pediatric cataract has made rapid progress in the past decade with the availability of safer anesthesia, newer technique's, more predictable intraocular lens (IOL) power calculation, a better understanding of neurobiology, genetics, amblyopia management, improved IOL designs for preventing visual axis opacification, and adjuvant postoperative care. Modern vitrectomy machines with minimally invasive instruments, radiofrequency, diathermy, and plasma blades help immensely in complicated cases...
March 2017: Indian Journal of Ophthalmology
https://www.readbyqxmd.com/read/28440238/thermal-ablation-of-pancreatic-cyst-with-a-prototype-endoscopic-ultrasound-capable-radiofrequency-needle-device-a-pilot-feasibility-study
#7
Maria Moris, Mustafa Atar, Abdurrahman Kadayifci, Murli Krishna, Ariston Librero, Eugene Richie, William Brugge, Michael B Wallace
BACKGROUND AND OBJECTIVES: Pancreatic cysts are evaluated by endoscopic ultrasound and fine needle aspiration (EUS). The only accepted treatment is pancreatectomy, which is associated with morbidity and mortality. This study evaluated the optimal thermal dosimetry of a novel radiofrequency ablation device using a standard electrosurgical unit in ex vivo cyst models. METHODS: A modified EUS 22-gauge monopolar needle prototype with a tip electrode connected to a standard electrosurgical unit (Erbe USA, Marietta, GA, USA) was used to induce a subboiling point temperature...
March 2017: Endoscopic Ultrasound
https://www.readbyqxmd.com/read/28439625/-direct-mpr-a-useful-tool-for-oblique-ct-fluoroscopy-assisted-puncture
#8
Rui Sato, Takeshi Aramaki, Kiichiro Yoza, Kenji Iwai, Michihisa Moriguchi, Koiku Asakura, Masahiro Endo, Takahiro Ito
OBJECTIVE: Conventional multiplanar reconstruction (MPR) imaging can be used as a tool for planning oblique puncture procedures, but it takes a few minutes to reconstruct and is not appropriate for real-time CT fluoroscopy-assisted puncture. Recently, new MPR technology has been used that requires only 8 s and makes it possible to obtain a nearly real-time CT fluoroscopy-assisted oblique puncture. We refer to it as "direct MPR." This is the first clinical report of this technique. METHODS: Since February 2016, we have performed real-time, CT-guided oblique punctures with this new technology, "direct MPR," using an angio-CT system...
April 24, 2017: Cardiovascular and Interventional Radiology
https://www.readbyqxmd.com/read/28439618/-radiofrequency-current-or-cryoballoon-for-ablation-of-atrial-fibrillation-hot-or-cold
#9
B Reissmann, K-H Kuck, A Metzner
Atrial fibrillation (AF) is the most common form of cardiac arrhythmia. The aim of therapy in symptomatic patients is the establishment of a stable sinus rhythm (SR). Catheter ablation with isolation of the pulmonary veins is the essential component of all forms of ablation therapy and provides the most effective treatment option. The most frequently used technologies for pulmonary vein isolation (PVI) are radiofrequency current (RFC)-based and cryoballoon (CB)-guided ablation. Irrespective of the simplification of PVI, CB ablation is characterized by a short learning curve and short procedural times and demonstrated non-inferiority with respect to safety and efficacy when directly compared to RFC ablation for the treatment of patients with paroxysmal AF; however, the clinical outcome in patients with persistent AF is often insufficient when performing pulmonary vein isolation (PVI) alone for stabilization of SR...
April 24, 2017: Herz
https://www.readbyqxmd.com/read/28439517/incidence-and-risk-factors-for-organ-space-infection-after-radiofrequency-assisted-hepatectomy-or-ablation-of-liver-tumors-in-a-single-center-more-than-meets-the-eye
#10
Ioannis Karavokyros, Stamatios Orfanos, Anastasios Angelou, Antonia Meropouli, Dimitrios Schizas, John Griniatsos, Emmanouil Pikoulis
INTRODUCTION: Surgical site infections (SSIs) and especially organ/space infection (O/SI) after resection or ablation of liver tumors are associated with increased morbidity and mortality. A secondary blood stream infection (BSI) is considered an O/SI but the exact prevalence is unknown. We aimed to investigate the incidence of O/SI and BSIs in a cohort of consecutive patients after liver resection or ablation, to seek for a possible connection between them and to search for potential risk factors...
2017: Frontiers in Surgery
https://www.readbyqxmd.com/read/28438130/the-safety-and-efficacy-of-percutaneous-intraductal-radiofrequency-ablation-in-unresectable-malignant-biliary-obstruction-a-single-institution-experience
#11
Wei Cui, Wenzhe Fan, Mingjian Lu, Yingqiang Zhang, Wang Yao, Jiaping Li, Yu Wang
BACKGROUND: Patients with unresectable malignant biliary obstruction have limited life expectancy because of limited stent patency and tumor progression. The aim of our study was to retrospectively evaluate the safety and efficacy of combining intraductal RFA with biliary metal stent placement for patients with malignant biliary obstruction. METHODS: Patients who received percutaneous intraductal RFA and biliary stent placement for malignant biliary obstruction between 2013 and 2015 were identified...
April 24, 2017: BMC Cancer
https://www.readbyqxmd.com/read/28436813/rf-heating-of-gold-cup-and-conductive-plastic-electrodes-during-simultaneous-eeg-and-mri
#12
Mukund Balasubramanian, William M Wells, John R Ives, Patrick Britz, Robert V Mulkern, Darren B Orbach
PURPOSE: To investigate the heating of EEG electrodes during magnetic resonance imaging (MRI) scans and to better understand the underlying physical mechanisms with a focus on the antenna effect. MATERIALS AND METHODS: Gold cup and conductive plastic electrodes were placed on small watermelons with fiberoptic probes used to measure electrode temperature changes during a variety of 1.5T and 3T MRI scans. A subset of these experiments was repeated on a healthy human volunteer...
2017: Neurodiagnostic Journal
https://www.readbyqxmd.com/read/28436636/-iodine-131-joint-radio-frequency-ablation-treatment-for-child-with-hyperthyroidism-goiter-one-case-report
#13
Yonghua Chen, Li Liang, Yanlan Fang, Chunlin Wang, Linfa Li, Tian'an Jiang
A 12-year-old girl presented with a history of cervical mass, and one week of throat discomfort and dyspnea. Five years ago, the patient was diagnosed as Hashimoto's thyroiditis and hyperthyroidism; she received antithyroid drug treatment, but the result was not satisfactory. B-ultrasonic showed that the size of thyroid gland was 8.1 cm×3.2 cm in the left and 8.2 cm×4.8 cm in the right. After iodine 131 combined with radiofrequency ablation (RFA) treatment, throat discomfort and recumbent breathing difficulties disappeared, and B-ultrasonic showed that the size of thyroid reduced to 2...
January 25, 2017: Zhejiang da Xue Xue Bao. Yi Xue Ban, Journal of Zhejiang University. Medical Sciences
https://www.readbyqxmd.com/read/28434661/retrospective-review-of-percutaneous-image-guided-ablation-of-oligometastatic-prostate-cancer-a-single-institution-experience
#14
Andrew J Erie, Jonathan M Morris, Brian T Welch, A Nicholas Kurup, Adam J Weisbrod, Thomas D Atwell, Grant D Schmit, Eugene D Kwon, Matthew R Callstrom
PURPOSE: To retrospectively review and report the efficacy and safety of percutaneous image-guided ablation (cryoablation or radiofrequency ablation) in the treatment of oligometastatic prostate cancer. MATERIALS AND METHODS: An institutional registry was retrospectively reviewed and revealed 16 patients with oligometastatic prostate cancer (median age, 67 y; range, 50-86 y) who underwent percutaneous image-guided ablation to treat 18 metastatic sites. A subgroup of 7 patients with 8 metastases were androgen-deprivation therapy (ADT)-naïve and underwent ablation to delay initiation of ADT...
April 20, 2017: Journal of Vascular and Interventional Radiology: JVIR
https://www.readbyqxmd.com/read/28434449/electrical-superior-vena-cava-isolation-using-a-novel-pace-and-ablate-technique-under-diaphragmatic-electromyography-monitoring
#15
Shinsuke Miyazaki, Shigeki Kusa, Hitoshi Hachiya, Hiroshi Taniguchi, Takayuki Niida, Sadamitsu Ichijo, Kenzo Hirao, Yoshito Iesaka
BACKGROUND: Diaphragmatic compound motor action potential (CMAP) amplitude monitoring is a standard technique to anticipate phrenic nerve injury during cryoballoon ablation. OBJECTIVE: The purpose of this study was to evaluate the feasibility of a novel superior vena cava isolation (SVCI) technique using simultaneous pacing and ablation through the tip of a single mapping/ablation catheter. METHODS: Fifty-four patients with atrial fibrillation were included...
May 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/28434446/revisiting-pulmonary-vein-isolation-alone-for-persistent-atrial-fibrillation-a-systematic-review-and-meta-analysis
#16
Aleksandr Voskoboinik, Jeremy T Moskovitch, Nadav Harel, Prashanthan Sanders, Peter M Kistler, Jonathan M Kalman
BACKGROUND: Early studies demonstrated relatively low success rates for pulmonary vein isolation (PVI) alone in patients with persistent atrial fibrillation (PeAF). However, the advent of new technologies and the observation that additional substrate ablation does not improve outcomes have created a new focus on PVI alone for treatment of PeAF. OBJECTIVE: The purpose of this study was to systematically review the recent medical literature to determine current medium-term outcomes when a PVI-only approach is used for PeAF...
May 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/28434049/a-prospective-study-of-the-safety-and-efficacy-of-a-combined-bipolar-radiofrequency-intense-pulsed-light-and-infrared-diode-laser-treatment-for-global-facial-photoaging
#17
Min Jiang, Fang Yan, Mathew Avram, Zhong Lu
The clinical features of photoaging include: skin texture changes, laxity, rhytides, pigmentary changes, and vascular changes such as erythema and telangiectasias. In order to meet patients' increasing demands for improving all aspects of photoaging at one office visit, employing a multi-modality treatment for all aspects of photoaging has become increasingly desirable for the physician and patient alike. We examine a novel device that employs bipolar radiofrequency (RF), intense pulsed light (IPL), and infrared diode laser...
April 23, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28433987/radiofrequency-lesions-through-deep-brain-stimulation-electrodes-in-movement-disorders-case-report-and-review-of-the-literature
#18
Javier Pérez-Suárez, Cristina V Torres Díaz, Lydia López Manzanares, Marta Navas García, Jesús Pastor, Patricia Barrio Fernández, Rafael G de Sola
BACKGROUND: Although there are few reports of radiofrequency lesions performed through deep brain stimulation (DBS) electrodes in patients with movement disorders, experience with this method is scarce. METHODS: We present 2 patients who had been previously treated with DBS of subthalamic nuclei (STN) and the ventral intermediate (VIM) nucleus of the thalamus for Parkinson's disease and essential tremor, respectively, and underwent a radiofrequency lesion through their DBS electrodes after developing a hardware infection...
April 22, 2017: Stereotactic and Functional Neurosurgery
https://www.readbyqxmd.com/read/28433934/amino-acid-functionalized-gadofullerene-nanoparticles-with-superior-antitumor-activity-via-destruction-of-tumor-vasculature-in%C3%A2-vivo
#19
Yue Zhou, Ruijun Deng, Mingming Zhen, Jie Li, Mirong Guan, Wang Jia, Xue Li, Ying Zhang, Tong Yu, Toujun Zou, Zhigao Lu, Jun Guo, Lei Sun, Chunying Shu, Chunru Wang
Researchers have been puzzled of the therapy of malignant tumors and the current therapeutic strategies are always accompanied by toxicity or side effects. Developing efficient nanodrugs could reduce the dosage and greatly improve the therapeutic effects in cancer treatments. Here we initially reported a novel kind of gadofullerene nanoparticles functionalized with amino acid (β-alanine), which exhibited a superior antitumor activity in hepatoma H22 models via a novel therapeutic mechanism. The involvement of β-alanine improved the tumor inhibition rate up to 76...
April 14, 2017: Biomaterials
https://www.readbyqxmd.com/read/28433436/subharmonic-aided-pressure-estimation-for-monitoring-interstitial-fluid-pressure-in-tumors-calibration-and-treatment-with-paclitaxel-in-breast-cancer-xenografts
#20
Valgerdur G Halldorsdottir, Jaydev K Dave, Andrew Marshall, Anya I Forsberg, Traci B Fox, John R Eisenbrey, Priscilla Machado, Ji-Bin Liu, Daniel A Merton, Flemming Forsberg
Interstitial fluid pressure (IFP) in rats with breast cancer xenografts was non-invasively estimated using subharmonic-aided pressure estimation (SHAPE) versus an invasive pressure monitor. Moreover, monitoring of IFP changes after chemotherapy was assessed. Eighty-nine rats (calibration n = 25, treatment n = 64) were injected with 5 × 10(6) breast cancer cells (MDA-MB-231). Radiofrequency signals were acquired (39 rats successfully imaged) with a Sonix RP scanner (BK Ultrasound, Richmond, BC, Canada) using a linear array (L9-4, transmit/receive: 8/4 MHz) after administration of Definity (Lantheus Medical Imaging, North Billerica, MA, USA; 180 μL/kg) and compared with readings from an invasive pressure monitor (Stryker, Berkshire, UK)...
April 19, 2017: Ultrasound in Medicine & Biology
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