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Non-Ablative Transvaginal Radiofrequency in the Treatment of Stress Urinary Incontinence: Review of the Literature

Open Journal of Obstetrics and Gynecology 2023年第2期13卷 133-141页

作者： Haley Calcagnotto Laura Leite Vittoria Dreher Longo Gustavo Messinger Piva Thais Gasperin alexandra maria flores bordignon Renata Rauber Felkl Jose Mauro Madi Gabriela Françoes Rostirolla Obstetric and Gynecology Department Caxias do Sul University Caxias do Sul Brazil Caxias do Sul University Caxias do Sul Brazil

Background: Urinary incontinence is defined as the involuntary loss of urine, which can affect up to 45% of women after menopause. Radiofrequency is a non-invasive procedure that involves the application of an electromagnetic wave that through heat generation promotes neocollagenesis and neoeslatinogenesis in the vaginal epithelium. This energy-based technology has been studied as a potential alternative for the treatment of genitourinary syndrome of menopause and urinary incontinence. Objective: To review the recent literature (from 2020 to June 2022) on the use of transvaginal radiofrequency in the treatment of stress urinary incontinence, by searching articles at databases of Capes, PubMed Cochrane and Scielo. Methods: The descriptor terms “Urinary Incontinence/therapy” [Majr] AND “Urinary Incontinence, Stress/therapy” [Majr] AND RADIOFREQUENCY-Search Results-PubMed, [“woman” OR “women”] AND [“urinary incontinence” OR “stress urinary incontinence”] AND Radiofrequency were used, with a filter for the period 2020 to 2022. Conclusion: The studies evaluated in this review demonstrated significant results of radiofrequency in the resolution or reduction of complaints of women with urinary incontinence, especially stress urinary incontinence, but most of these studies presented a low methodological quality. There is, therefore, a lack of studies with longer follow-ups, evaluation of cost-effectiveness, randomized clinical trials with objective outcomes and the use of validated questionnaires with international acceptance.

关键词： Radiofrequency Urinary Incontinence Genitourinary Syndrome of Meno-pause Vaginal Atrophy

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Terahertz Modulation of Hexagonal-Shaped Metamaterials Employing ZnO Quantum Dots

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Open Journal of Inorganic Non 2019年第1期9卷 1-13页

作者： Clarissa D. Vázquez-Colón Alvaro flores-Pacheco Janeth alexandra García-Monge Juan Adrián Zepeda-Galvéz Daniel Shreiber Arturo Ayón The University of Texas at San Antonio San Antonio Texas USA Departamento de Física Universidad de Sonora Hermosillo Sonora México US Army Research Laboratory Aberdeen Proving Ground MD USA

The utilization of UV excitation to verify the terahertz (THz) wave modulation of hexagonal-shaped metamaterial (MM) arrays coated with synthesized photoluminescent, down-shifting ZnO quantum dots (QDs) of two different radius sizes, namely, 3.00 nm (pH 10) and 2.12 nm (pH 12), respectively is reported. In order to characterize the behavior of the MM before and after deployment of the ZnO QDs, THz time domain spectroscopy in transmission mode was employed. Upon exposure to UV excitation, the collected amplitude modulation values were 9.21% for the pH 12 and 4.55% for the pH 10 ZnO QDs, respectively. It is anticipated that the ability to actively tune the performance of otherwise passive structures will promote the proliferation of THz signal modulation devices in the near future.

关键词： Terahertz Metamaterials Quantum Dots Terahertz Spectroscopy Modulation

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