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Monopolar radiofrequency

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https://www.readbyqxmd.com/read/28556393/evaluation-of-the-safety-and-efficacy-of-a-monopolar-nonablative-radiofrequency-device-for-the-improvement-of-vulvo-vaginal-laxity-and-urinary-incontinence
#1
Shelena Lalji, Paula Lozanova
BACKGROUND AND OBJECTIVE: Vaginal childbirth, natural process of aging, congenital factors, and surgical interventions are considered the main causes of vulvo-vaginal laxity driven by changes in collagen and elastin fibers. This causes a loss of strength and flexibility within the vaginal wall. As a result, women may experience lack of sensation and stress urinary incontinence (SUI)-the condition of involuntary loss of urine associated with activities that cause an increase in intra-abdominal pressure (eg, sneezing, coughing, and lifting)...
May 29, 2017: Journal of Cosmetic Dermatology
https://www.readbyqxmd.com/read/28485289/comparative-assessment-of-monopolar-and-bipolar-radiofrequency-surgery-of-inferior-turbinate
#2
RANDOMIZED CONTROLLED TRIAL
Hasan Emre Koçak, Bengül Altaş, Salih Aydın, Ümit Taşkın, Mehmet Faruk Oktay, Mustafa Suphi Elbistanlı, Ayşe Pelin Yiğider
OBJECTIVE: The aim of this study was to compare early outcomes of monopolar (MP) and bipolar (BP) radiofrequency (RF) treatment of inferior turbinate hypertrophy from the perspective of both the patient and the surgeon. STUDY DESIGN: Prospective, randomized, single-blind study. MATERIALS AND METHODS: Seventy-one patients with inferior turbinate hypertrophy resistant to medical treatment. BP RF was used in 36 patients and MP RF in 35 patients, respectively...
July 10, 2016: Otolaryngologia Polska
https://www.readbyqxmd.com/read/28474275/comparison-of-mono-and-bipolar-radiofrequency-ablation-in-benign-thyroid-disease
#3
Yücel Korkusuz, Alexander Mader, Daniel Gröner, Shadi Ahmad, Oscar Maximilian Mader, Frank Grünwald, Christian Happel
PURPOSE: Radiofrequency ablation (RFA) is an approved minimal invasive method for the treatment of benign thyroid nodules. Several experimental, mainly ex vivo animal studies have compared the effectiveness of different RFA procedures in liver tissue. The aim of this retrospective clinical study was to evaluate the difference between monopolar and bipolar RFA in thyroid tissue considering thyroid volume reduction, patient discomfort and ultrasound evaluation. METHODS: Eighteen patients with symptomatic complex benign thyroid nodules were treated in a single RFA session...
May 4, 2017: World Journal of Surgery
https://www.readbyqxmd.com/read/28474219/impact-of-radiofrequency-energy-on-intraoperative-outcomes-of-laparoscopic-colectomy-for-cancer-in-obese-patients
#4
Diletta Cassini, Michelangelo Miccini, Matteo Gregori, Farshad Manoochehri, Gianandrea Baldazzi
Nowadays laparoscopic approach is accepted as a valid alternative to open surgery for the treatment of colorectal cancer. Several studies consider this approach to be safe and feasible also in obese patients, even if dissection in these patients may require a longer operative time and involve higher blood loss. To facilitate laparoscopic approach, more difficult in these patients, several energy sources for laparoscopic dissection and sealing, has been adopted recently. The aim of this study is to investigate the possible intraoperative advantages of radiofrequency energy in terms of blood loss and operative time in obese patients undergoing laparoscopic resection for cancer...
May 4, 2017: Updates in Surgery
https://www.readbyqxmd.com/read/28445542/no-touch-radiofrequency-ablation-using-multiple-electrodes-an-in-vivo-comparison-study-of-switching-monopolar-versus-switching-bipolar-modes-in-porcine-livers
#5
Won Chang, Jeong Min Lee, Jeong Hee Yoon, Dong Ho Lee, Sang Min Lee, Kyoung Bun Lee, Bo Ram Kim, Tae-Hyung Kim, Seunghyun Lee, Joon Koo Han
OBJECTIVE: To evaluate the in vivo technical feasibility, efficiency, and safety of switching bipolar (SB) and switching monopolar (SM) radiofrequency ablation (RFA) as a no-touch ablation technique in the porcine liver. MATERIALS AND METHODS: The animal care and use committee approved this animal study and 16 pigs were used in two independent experiments. In the first experiment, RFA was performed on 2-cm tumor mimickers in the liver using a no-touch technique in the SM mode (2 groups, SM1: 10 minutes, n = 10; SM2: 15 minutes, n = 10) and SB-mode (1 group, SB: 10 minutes, n = 10)...
2017: PloS One
https://www.readbyqxmd.com/read/28440238/thermal-ablation-of-pancreatic-cyst-with-a-prototype-endoscopic-ultrasound-capable-radiofrequency-needle-device-a-pilot-feasibility-study
#6
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/28403104/effect-of-bipolar-pulsed-radiofrequency-on-refractory-chronic-cervical-radicular-pain-a-report-of-two-cases
#7
Min Cheol Chang
RATIONALE: Despite undergoing transforaminal epidural steroid injection (TFESI), many patients complain of persisting cervical radicular pain. For the management of chronic cervical radicular pain, clinicians are widely applying pulsed radiofrequency (PRF) stimulation to dorsal root ganglions (DRGs). To enhance the effect of PRF stimulation, we conducted bipolar PRF stimulation in 2 patients with chronic cervical radicular pain that was refractory to monopolar PRF and repeated TFESIs...
April 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28248888/comparison-between-bipolar-pulsed-radiofrequency-and-monopolar-pulsed-radiofrequency-in-chronic-lumbosacral-radicular-pain-a-randomized-controlled-trial
#8
RANDOMIZED CONTROLLED TRIAL
Min Cheol Chang, Yun Woo Cho, Sang Ho Ahn
BACKGROUND: Chronic lumbosacral radicular pain is a challenging medical problem with respect to therapeutic management. Many patients with lumbosacral radicular pain complain of persistent leg pain after transforaminal epidural steroid injection. Nowadays, pulsed radiofrequency (PRF) stimulation on the dorsal root ganglion (DRG) is widely used for controlling lumbosacral radicular pain. METHODS: We evaluated the effect of bipolar PRF on the DRG for the management of lumbosacral radicular pain...
March 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28246508/no-touch-radiofrequency-ablation-a-comparison-of-switching-bipolar-and-switching-monopolar-ablation-in-ex-vivo-bovine-liver
#9
Won Chang, Jeong Min Lee, Sang Min Lee, Joon Koo Han
OBJECTIVE: To evaluate the feasibility, efficiency, and safety of no-touch switching bipolar (SB) and switching monopolar (SM) radiofrequency ablation (RFA) using ex vivo bovine livers. MATERIALS AND METHODS: A pork loin cube was inserted as a tumor mimicker in the bovine liver block; RFA was performed using the no-touch technique in the SM (group A1; 10 minutes, n = 10, group A2; 15 minutes, n = 10) and SB (group B; 10 minutes, n = 10) modes. The groups were compared based on the creation of confluent necrosis with sufficient safety margins, the dimensions, and distance between the electrode and ablation zone margin (DEM)...
March 2017: Korean Journal of Radiology: Official Journal of the Korean Radiological Society
https://www.readbyqxmd.com/read/28191716/clinical-efficacy-and-safety-evaluation-of-a-novel-fractional-unipolar-radiofrequency-device-on-facial-tightening-a-preliminary-report
#10
Dong Hye Suh, Eun Jung Byun, Sang Jun Lee, Kye Yong Song, Hei Sung Kim
BACKGROUND: Previous studies have shown that radiofrequency (RF) energy is safe and effective for improving skin laxity. Unlike monopolar and bipolar devices, little has been studied with the unipolar hand piece. OBJECTIVES: We sought to evaluate the safety and efficacy of a novel fractional unipolar RF device on facial tightening. PATIENTS AND METHODS: This was a retrospective, single-center study of 14 subjects with age-related facial laxity who underwent five sessions of fractional unipolar RF at an interval of 2 weeks, and then followed-up for 3 months...
February 13, 2017: Journal of Cosmetic Dermatology
https://www.readbyqxmd.com/read/28161079/effect-of-single-treatment-surface-cooled-radiofrequency-therapy-on-vaginal-laxity-and-female-sexual-function-the-viveve-i-randomized-controlled-trial
#11
RANDOMIZED CONTROLLED TRIAL
Michael Krychman, Christopher G Rowan, Bruce B Allan, Leonard DeRogatis, Scott Durbin, Ashley Yacoubian, Deborah Wilkerson
INTRODUCTION: Vaginal laxity is a highly prevalent and undertreated medical condition. AIM: To evaluate the efficacy and safety of surface-cooled, monopolar radiofrequency (RFc) therapy for the treatment of vaginal laxity in the VIVEVE I trial. METHODS: The VIVEVE I trial was a prospective, randomized, single-blinded, and sham-controlled study. Nine study centers in Canada, Italy, Spain, and Japan participated. Women presenting with vaginal laxity were screened and informed consent was obtained...
February 2017: Journal of Sexual Medicine
https://www.readbyqxmd.com/read/28128685/scar-remodeling-with-the-association-of-monopolar-capacitive-radiofrequency-electric-stimulation-and-negative-pressure
#12
Giovanni Nicoletti, Paola Perugini, Sara Bellino, Priscilla Capra, Alberto Malovini, Omar Jaber, Marco Tresoldi, Angela Faga
OBJECTIVE: A study was established to objectively assess the effects of low-intensity electromagnetic and electric stimulation plus negative pressure on mature scars. BACKGROUND: Radiofrequency plus negative pressure therapy demonstrated a favorable reorganization and regeneration of the collagen and elastic fibers and was proposed for the treatment of cellulitis and skin stretch marks. METHODS: Twenty-six mature scars in 20 Caucasian patients (15 females and 5 males) were enrolled in the study...
May 2017: Photomedicine and Laser Surgery
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
#13
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/27862748/potential-of-a-no-touch-pincer-ablation-procedure-that-uses-a-multipolar-radiofrequency-ablation-system-to-prevent-intrasubsegmental-recurrence-of-small-and-single-hepatocellular-carcinomas
#14
Yusuke Kawamura, Kenji Ikeda, Shunichiro Fujiyama, Tetsuya Hosaka, Masahiro Kobayashi, Satoshi Saitoh, Hitomi Sezaki, Norio Akuta, Fumitaka Suzuki, Yoshiyuki Suzuki, Yasuji Arase, Hiromitsu Kumada
OBJECTIVE: The aim of this study was to clarify the usefulness of a no-touch pincer ablation procedure that uses bipolar electrodes to prevent intrasubsegmental tumor recurrence after radiofrequency ablation (RFA) for patients with hepatocellular carcinoma (HCC). METHODS: We studied 303 consecutive patients with HCC (single nodule and tumor diameter ≤30 mm) who received RFA between January 2005 and April 2015; 268 patients received touch ablation using a monopolar or bipolar RFA device, and 35 received no-touch ablation using a bipolar RFA device...
November 15, 2016: Hepatology Research: the Official Journal of the Japan Society of Hepatology
https://www.readbyqxmd.com/read/27782774/effect-of-change-in-portal-vein-flow-rates-on-hepatic-ablations-created-with-a-bipolar-radiofrequency-ablation-device
#15
Gerald D Dodd, Anthony C Lanctot, Kimberly E Lind
Purpose To investigate the effect of change in portal vein flow rates on the size and shape of ablations created by a bipolar radiofrequency (RF) ablation device. Materials and Methods This study was exempt from institutional animal care and use committee review. An in vitro bovine liver model perfused with autologous blood via the portal vein at three flow rates (60, 80, 100 mL/min per 100 g of liver) was used. Four ablations, two bipolar and two monopolar (control probe), were made in each of five livers perfused at each flow rate...
May 2017: Radiology
https://www.readbyqxmd.com/read/27776095/ultrasound-guided-cervical-medial-branch-radiofrequency-neurotomy-can-multitined-deployment-cannulae-be-the-solution
#16
Roderick J Finlayson, Atikun Thonnagith, Maria Francisca Elgueta, Jordi Perez, John-Paul B Etheridge, De Q H Tran
BACKGROUND AND OBJECTIVES: Novel multitined cannulae constitute an attractive option for ultrasound-guided radiofrequency neurotomy of cervical medial branches. The deployment tines increase the cannula's active area, thus altering its lesion size. Despite their theoretical benefits, multitined cannulae have not been assessed. In this bench study, we sought to investigate the lesions produced by a standard 18-gauge and 2 commercially available multitined deployment cannulae. We created ex vivo models to evaluate lesion morphology at a periosteal interface using approach angles likely to be encountered during an ultrasound-guided technique...
January 2017: Regional Anesthesia and Pain Medicine
https://www.readbyqxmd.com/read/27738072/surgery-for-supraventricular-tachycardia-and-congenital-heart-defects-long-term-efficacy-of-the-combined-approach-in-adult-patients
#17
Alessandro Giamberti, Francesca R Pluchinotta, Massimo Chessa, Alessandro Varrica, Raffaele Vitale, Alessandro Frigiola, Carlo Pappone, Marco Ranucci
AIMS: Supraventricular arrhythmias are a major cause of morbidity and mortality in adult patients with congenital heart disease (CHD). Intraoperative ablation offers an alternative for patients who failed ablation procedures or are requiring concomitant surgical intervention. We present our long-term results with the surgical treatment of arrhythmias in adults with CHD (ACHD) undergoing elective cardiac surgery and the clinical predictors for arrhythmia recurrence. METHODS AND RESULTS: Between 2002 and 2013, 80 consecutive patients with CHD, mean age of 39 years, underwent intraoperative ablation with monopolar irrigated radiofrequency during cardiac surgery procedures...
October 12, 2016: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/27663055/effects-on-the-distal-radioulnar-joint-of-ablation-of%C3%A2-triangular-fibrocartilage-complex-tears-with-radiofrequency-energy
#18
Michaela Huber, Markus Loibl, Christoph Eder, Richard Kujat, Michael Nerlich, Sebastian Gehmert
PURPOSE: This cadaver study investigated the temperature profile in the wrist joint and distal radioulnar joint (DRUJ) during radiofrequency energy (RFE) application for triangular fibrocartilage complex resection. METHODS: An arthroscopic partial resection of the triangular fibrocartilage complex using monopolar and bipolar RFE was simulated in 14 cadaver limbs. The temperature was recorded simultaneously in the DRUJ and at 6 other anatomic locations of the wrist during RFE application...
November 2016: Journal of Hand Surgery
https://www.readbyqxmd.com/read/27650284/real-time-us-ct-mr-fusion-imaging-for-percutaneous-radiofrequency-ablation-of-hepatocellular-carcinoma
#19
Su Joa Ahn, Jeong Min Lee, Dong Ho Lee, Sang Min Lee, Jung-Hwan Yoon, Yoon Jun Kim, Jeong-Hoon Lee, Su Jong Yu, Joon Koo Han
BACKGROUND & AIMS: Although ultrasonography (US) guided radiofrequency ablation (RFA) is a commonly used treatment option for early hepatocellular carcinoma (HCC), inconspicuous tumors on US limits its feasibility. Thus, we prospectively determined whether real-time US-CT/MR fusion imaging can improve the technical feasibility of RFA compared with B-mode US, and help predict local tumor progression after RFA in patients with HCC. METHODS: A total of 216 patients with 243 HCCs ⩽5cm referred for RFA were prospectively enrolled...
February 2017: Journal of Hepatology
https://www.readbyqxmd.com/read/27647190/fluoroscopy-guided-bipolar-radiofrequency-thermocoagulation-treatment-for-discogenic-low-back-pain
#20
Li Zhang, Xin-Li Ding, Xu-Li Zhao, Jun-Nan Wang, Yan-Ping Li, Ming Tian
BACKGROUND: The efficacy of percutaneous intradiscal radiofrequency thermocoagulation (PIRFT) for the treatment of discogenic low back pain (LBP) remains controversial. However, all the PIRFT studies utilized monopolar radiofrequency thermocoagulation (RFTC). The aim of this study was to investigate the safety and efficacy of bipolar RFTC for the treatment of discogenic LBP. METHODS: A total of 23 patients with discogenic LBP were treated with single-level bipolar RFTC...
October 5, 2016: Chinese Medical Journal
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