نتایج جستجو برای: radiofrequency interference

تعداد نتایج: 114522  

Journal: :Circulation. Cardiovascular interventions 2014
Felix Mahfoud Stefan Tunev Jennifer Ruwart Daniel Schulz-Jander Bodo Cremers Dominik Linz Thomas Zeller Deepak L Bhatt Krishna Rocha-Singh Michael Böhm Robert J Melder

BACKGROUND In selected patients with hypertension, renal artery (RA) stenting is used to treat significant atherosclerotic stenoses. However, blood pressure often remains uncontrolled after the procedure. Although catheter-based renal denervation (RDN) can reduce blood pressure in certain patients with resistant hypertension, there are no data on the feasibility and safety of RDN in stented RA....

Journal: :Circulation. Arrhythmia and electrophysiology 2014
Vincent J H M van Driel Kars G E J Neven Harry van Wessel Bastiaan C du Pré Aryan Vink Pieter A F M Doevendans Fred H M Wittkampf

BACKGROUND Radiofrequency ablation inside pulmonary vein (PV) ostia can cause PV stenosis. A novel alternative method of ablation is irreversible electroporation, but the long-term response of PVs to electroporation ablation is unknown. METHODS AND RESULTS In ten 6-month-old pigs (60-75 kg), the response of PVs to circular electroporation and radiofrequency ablation was compared. Ten consecut...

2015
Yue Song Jingjing Zheng Mingwei Yan Weidong Ding Kui Xu Qingyu Fan Zhao Li Chunfeng Zhao

BACKGROUND To evaluate the potential effects of irreversible electroporation ablation on the Achilles tendon in a rabbit model and to compare the histopathological and biomechanical changes between specimens following electroporation ablation and radiofrequency ablation. METHODS A total of 140 six-month-old male New Zealand rabbits were used. The animals were randomly divided into two groups,...

2017
Takashi Iwata Aya Yamamoto Kantaro Hara Shoji Hanada

Radiofrequency cautery is widely used in minor surgery. However, it has not been considered to fit for major surgery. Herein, we report two cases of pneumothorax surgery using lowthermal coagulation by this general-purpose radiofrequency cautery device. Case 1: A 47-year-old male underwent bullectomy with a general radiofrequency cautery. We used Elleman® Surgitron PellevéTM S5 (Elleman Interna...

2014
NOPNARUEPORN RONGSAARD

Fractional Erbium:Glass 1550nm laser is a fractional photothemolysis (FP) laser with high effectiveness in atrophic acne scars treatment. Recently, fractional bipolar radiofrequency (RF) has been introduced to improve the efficacy and reduce side effects of the FP. Objective: The objective of the study was to compare the effectiveness and side effects of fractional bipolar radiofrequency with f...

2014
Wei Wei Jun-Bo Ge Yu Zou Li Lin Ying Cai Xue-Bo Liu Wen-Qing Zhu

BACKGROUND The relationship between focal pulmonary vein potential and atrial fibrillation (AF) has been confirmed. Pulmonary vein (PV) isolation and circumferential pulmonary vein ablation have been the most commonly used procedures of radiofrequency ablation. However, few studies have investigated the relationship between anatomical characteristics of PV and AF recurrences after radiofrequenc...

Journal: :Pain physician 2012
Stephan Klessinger

BACKGROUND Degenerative spondylolisthesis is one of the major causes for low back pain. Morphological abnormalities of the zygapophysial joints are a predisposing factor in the development of degenerative spondylolisthesis. Therefore, radiofrequency neurotomy seems to be a rational therapy. OBJECTIVES To determine if radiofrequency neurotomy is effective for patients with low back pain and de...

2017
Stephen Mackey

The goal of the U.S. Department of Transportation (DOT) Global Positioning System (GPS) Adjacent Band Compatibility Assessment is to evaluate the adjacent radiofrequency band power levels that can be tolerated by GPS and Global Navigation Satellite System (GNSS) receivers and to advance the Department’s understanding of the extent to which such power levels impact devices used for transportatio...

Journal: :مجله غدد درون ریز و متابولیسم ایران 0
دکتر مهدی هدایتی m hedayati endocrine research center of shaheed beheshti university of medical sciences, tehran, i.r. iran. دکتر نصراله رضایی قلعه n rezaei-ghaleh endocrine research center of shaheed beheshti university of medical sciences, tehran, i.r. iran. دکتر آرش اردوخانی a ordookhani endocrine research center of shaheed beheshti university of medical sciences, tehran, i.r. iran. دکتر فریدون عزیزی f azizi endocrine research center of shaheed beheshti university of medical sciences, tehran, i.r. iran.

introduction: determination of thyrotropin, total and free thyroxine and triiodothyronine are widely used as diagnostic methods for thyroid function evaluation. there have been numerous reports of interferences in thyroid hormone immunoassays. herein, a prominent positive interference is reported for a radioimmunoassay kit of total triiodothyronine. materials and methods: in this study, a total...

Journal: :The American journal of cardiology 1991
J J Langberg M Chin D J Schamp M A Lee J Goldberger D N Pederson M Oeff M D Lesh J C Griffin M M Scheinman

Percutaneous catheter ablation using radiofrequency energy can be used to interrupt atrioventricular (AV) conduction in patients with supraventricular tachycardia refractory to drugs. Results of radiofrequency ablation of the AV junction using a custom-designed catheter with a large, 3-mm-long distal electrode, 2-mm interelectrode spacing, and a shaft with increased torsional rigidity were comp...

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