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Synthetic Mesh

Lewis Chan, Vincent Tse
PURPOSE: The mid-urethral synthetic sling (MUS) procedure has become the standard of care for treatment of female stress urinary incontinence. However, a small number of patients will have complications following MUS including failure, obstructive voiding, sling erosion, or chronic pain. This paper discusses the role of 2D and 3D ultrasound imaging in the evaluation of the female patient with complications following placement of a synthetic mid-urethral sling. RESULTS: The MUS is easily visualized as an echogenic structure on ultrasound and can be imaged by transperineal, transvaginal and introital approaches...
March 12, 2018: World Journal of Urology
Ruben D Trochez, Steven Lane, Jonathan Duckett
INTRODUCTION AND HYPOTHESIS: The use of mesh for vaginal prolapse gained popularity during the 1990s. More recently, concerns have been raised regarding the safety of mesh procedures. Mesh can be inserted vaginally, laparoscopically or via an open abdominal route, but there are few data comparing the outcomes. Most previous published data relate to small numbers of procedures. METHODS: This was a review of data submitted to the British Society of Urogynaecology (BSUG) database of all cases reporting the use of mesh placed vaginally or abdominally (open or laparoscopic) between January 2006 and December 2016...
March 12, 2018: International Urogynecology Journal
Heye Zhang, Zhifan Gao, Lin Xu, Xingjian Yu, Ken C L Wong, Huafeng Liu, Ling Zhuang, Pengcheng Shi
The prominent advantage of meshfree method, is the way to build the representation of computational domain, based on the nodal points without any explicit meshing connectivity. Therefore, meshfree method can conveniently process the numerical computation inside interested domains with large deformation or inhomogeneity. In this paper, we adopt the idea of meshfree representation into cardiac medical image analysis in order to overcome the difficulties caused by large deformation and inhomogeneous materials of the heart...
2018: IEEE Journal of Translational Engineering in Health and Medicine
Chris Steffi, Dong Wang, Chee Hoe Kong, Zuyong Wang, Poon Nian Lim, Zhilong Shi, Eng San Thian, Wilson Wang
Estrogen, a steroid hormone, plays an important role in modulating osteoclast proliferation and development. Estrogen deficiency boosts osteoclast activity, leading to osteoporosis in elderly women. In this study, 17-ß estradiol (E2) loaded poly(ε-caprolactone) (PCL)/silk fibroin (SF) electrospun microfibers was developed as a proposed localized E2 delivery system to treat osteoporotic fractures. PCL is a synthetic polymer known for its biocompatibility and excellent mechanical properties. The bioactivity of PCL was enhanced by mixing it with natural silk fibroin (SF) polymer that has low immunogenicity and inherent bioactivity...
March 7, 2018: ACS Applied Materials & Interfaces
Dawei Wang, Stanley E Gilliland Iii, Xinbei Yi, Kayla Logan, Denver R Heitger, Heather R Lucas, Wei-Ning Wang
Efficient oxidation from arsenite [As(III)] to arsenate [As(V)], which is less toxic and more readily to be adsorbed by adsorbents, is important for the remediation of arsenic pollution. In this paper, we report a metal organic framework (MIL-100(Fe)) filter to efficiently remove arsenic from synthetic groundwater. With commercially available iron mesh as a substrate, MIL-100(Fe) is implanted through an in-situ growth method. MIL-100(Fe) is able to capture As(III) due to its microporous structure, superior surface area, and ample active sites for As adsorption...
March 7, 2018: Environmental Science & Technology
Zoltán Fekete, Szilvia Körösi, Gábor Németh
INTRODUCTION: The prevalence of pelvic organ prolapse (POP) with aging is escalating alarmingly, and now becoming a growing epidemic among the elderly. Synthetic transvaginal mesh (TVM) has been employed with increasing popularity in the treatment of POP until the end of the last decade. After the U.S. Drug and Food Administration (FDA) warnings in the years 2008 and 2011, the number of vaginal mesh operations has decreased dramatically. AIM: The aim of the study was to evaluate and compare the anti-POP effectivity, the anti-stress incontinence (anti-SUI) efficacy, and the late (36 months) post-operative complications of the anterior vaginoplasty and the TVM operations...
March 2018: Orvosi Hetilap
Alex Mowat, Declan Maher, Kaven Baessler, Corina Christmann-Schmid, Nir Haya, Christopher Maher
BACKGROUND: Posterior vaginal wall prolapse (also known as 'posterior compartment prolapse') can cause a sensation of bulge in the vagina along with symptoms of obstructed defecation and sexual dysfunction. Interventions for prevention and conservative management include lifestyle measures, pelvic floor muscle training, and pessary use. We conducted this review to assess the surgical management of posterior vaginal wall prolapse. OBJECTIVES: To evaluate the safety and effectiveness of any surgical intervention compared with another surgical intervention for management of posterior vaginal wall prolapse...
March 5, 2018: Cochrane Database of Systematic Reviews
Sabrina Trippoli, Erminia Caccese, Giorgio Tulli, Pierluigi Ipponi, Claudio Marinai, Andrea Messori
BACKGROUND: In the clinical literature on abdominal hernia repair, no sound criteria have been established to support the use of biological meshes as opposed to synthetic ones. Furthermore, the information on biological meshes is quite scarce, and so their place in therapy has not yet been defined. METHODS: The treatment of primary and incisional ventral hernia was the target intervention evaluated in our analysis. Our study consisted of the following phases: a) Identification of the biologic meshes available on the market; b) Literature search focused on efficacy and safety of these meshes; c) Analysis of the findings derived from the literature search...
March 1, 2018: International Journal of Surgery
Michael J Fitzgerald, Sarah Ullrich, Kumar Singh, Oren Misholy, Peter Kingham, Mary S Brady
Parastomal hernia repair remains a significant surgical challenge. Recurrence after standard "keyhole" or primary suture repair is common. We adopted and modified a new technique using a construct shaped like an inverted top hat. We review our experience over the last six years in the first 30 patients (31 consecutive procedures). Of these 31 procedures, six (19%) resulted in a parastomal hernia recurrence with a median follow-up of 31 months (range 0.5-80). Four of the recurrences occurred in our initial experience, when we constructed the top hat of xenograft alone...
February 22, 2018: American Journal of Surgery
Haibin Chen, Zichun Zhong, Yiwei Yang, Jiawei Chen, Linghong Zhou, Xin Zhen, Xuejun Gu
The aim of this study is to develop an internal-external correlation model for internal motion estimation for lung cancer radiotherapy. Deformation vector fields that characterize the internal-external motion are obtained by respectively registering the internal organ meshes and external surface meshes from the 4DCT images via a recently developed local topology preserved non-rigid point matching algorithm. A composite matrix is constructed by combing the estimated internal phasic DVFs with external phasic and directional DVFs...
February 27, 2018: Scientific Reports
Lukas Hrachowina, Guillem Domènech-Gil, Antonio Pardo, Michael S Seifner, Isabel Gracia, Carles Cané, Albert Romano-Rodriguez, Sven Barth
A new method for the site-selective synthesis of nanowires has been developed to enable material growth with defined morphology and at the same time different composition on the same chip surface. The chemical vapour deposition approach for the growth of these nanowire-based resistive devices using micromembranes can be easily modified and represents a simple, adjustable fabrication process for the direct integration of nanowire meshes in multifunctional devices. This proof-of-concept study includes the deposition of SnO2, WO3 and Ge nanowires on the same chip...
February 27, 2018: ACS Sensors
Fernando Ruiz-Jasbon, Kristina Ticehurst, Jukka Ahonen, Jonny Norrby, Marie-Lois Ivarsson
Background and Objectives: The role of long-term degradable implants in reducing the risk of chronic postoperative pain after inguinal hernia repair is still unclear. A pilot study using a synthetic long-term resorbable mesh in Lichtenstein repair showed good results regarding pain and discomfort in patients with indirect inguinal hernia (IH) without recurrences, but higher recurrence rate in patients with direct inguinal hernia (DH). The purpose of this study was to assess the incidence of pain and early recurrence in patients with LIH surgically treated with the TEP technique using a long-term degradable mesh...
January 2018: JSLS: Journal of the Society of Laparoendoscopic Surgeons
Jean-Philippe Lucot, Michel Cosson, Georges Bader, Philippe Debodinance, Cherif Akladios, Delphine Salet-Lizée, Patrick Delporte, Denis Savary, Philippe Ferry, Xavier Deffieux, Sandrine Campagne-Loiseau, Renaud de Tayrac, Sébastien Blanc, Sandrine Fournet, Arnaud Wattiez, Richard Villet, Marion Ravit, Bernard Jacquetin, Xavier Fritel, Arnaud Fauconnier
BACKGROUND: Laparoscopic mesh sacropexy (LS) or transvaginal mesh repair (TVM) are surgical techniques used to treat cystoceles. Health authorities have highlighted the need for comparative studies to evaluate the safety of surgeries with meshes. OBJECTIVE: To compare the rate of complications, and functional and anatomical outcomes between LS and TVM. DESIGN, SETTING, AND PARTICIPANTS: Multicenter randomized controlled trial from October 2012 to April 2014 in 11 French public hospitals...
February 19, 2018: European Urology
K Mitura, S Kozieł
BACKGROUND: In low-resource countries, a suture repair is still in common use due to the limited access to commercial mesh implants. The search for less expensive alternatives to the synthetic meshes has led to using mosquito nets. Sterilized mosquito net appears to be a low-cost and commonly available product that closely resembles commercially available meshes. However, the extent to which sterilization alters the structure of mosquito nets is still unknown. The aim of this research was to assess the effects of different sterilization types on physico-mechanical properties of mosquito nets...
February 22, 2018: Hernia: the Journal of Hernias and Abdominal Wall Surgery
Connie Wang, Alana L Christie, Philippe E Zimmern
INTRODUCTION: To study the evolution of type of presenting symptoms after mid-urethral sling (MUS) placement relative to the interval between placement and subsequent synthetic sling removal (SSR) for complication(s). METHODS: An IRB-approved, prospectively maintained database of women who underwent SSR was retrospectively reviewed for demographics, interval between MUS placement and SSR, history of chronic pain syndromes and recurrent urinary tract infections (RUTI), anti-incontinence and prolapse repairs, and MUS-related symptoms at presentation, including storage dysfunction, voiding dysfunction, RUTI, vaginal pain, non-vaginal pain, mesh exposure, and urinary incontinence (UI)...
February 21, 2018: Neurourology and Urodynamics
Gal Y Kreitman, Ryan J Elias, David W Jeffery, Gavin L Sacks
Volatile sulfur compounds (VSCs), particularly low molecular weight sulfhydryls like hydrogen sulfide (H 2 S) and methanethiol (MeSH), are often observed in wines with sulfurous off-aromas. Recent work has shown both H 2 S and MeSH can increase up to a few µM (> 40 µg/L) during anoxic storage, but the identity of the latent sources of these sulfhydryls is still disputed. This review critically evaluates the latent precursors and pathways likely to be responsible for the loss and formation of these sulfhydryls during wine storage based on the existing enology literature as well as studies from food chemistry, geochemistry, biochemistry, and synthetic chemistry...
February 16, 2018: Critical Reviews in Food Science and Nutrition
Sarah Shafaat, Naside Mangir, Sabiniano R Regureos, Christopher R Chapple, Sheila MacNeil
AIMS: Pelvic organ prolapse and stress urinary incontinence affect 40-50% of postmenopausal women worldwide. Polypropylene meshes have been extensively used for the surgical intervention of these disorders; however, these meshes can lead to severe complications in some patients. The need for synthetic materials more suited for use in pelvic floor repair is widely accepted. This study aims to develop an electrospun 17-β-estradiol releasing polyurethane (PU) scaffold that not only provides the appropriate mechanical support but can also stimulate new extracellular matrix (ECM) production and angiogenesis...
February 13, 2018: Neurourology and Urodynamics
Lorna Jane Cook, Tibor Kovacs
The use of novel devices such as acellular dermal matrices (ADMs) to support the lower pole in implant-based breast reconstructions (IBBRs) has been described as one of the most important advances in breast reconstructive surgery following mastectomy. However, the majority of outcomes studies focus primarily on providing evidence for the rates of short-term complications associated with their use, as opposed to their reported benefits. Given the high costs associated with using ADMs, together with an increasing number of alternative, cheaper synthetic products entering the market, it is important to clarify whether their use is actually justified and whether the alternative products offer equivalent or superior outcomes...
2018: Ecancermedicalscience
Ming Li, Yupeng Chen, Li-Bo Mao, Yuan Jiang, Mingfeng Liu, Qiaoling Huang, Zhiyang Yu, Shutao Wang, Shu-Hong Yu, Changjian Lin, Xiang Yang Liu, Helmut Cölfen
Like their biogenic counterparts, synthetic minerals with hierarchical architectures should exhibit (multiple) structural functions, which nicely bridge the boundaries between engineering and functional materials. Nevertheless, design of bio-inspired mineralization approaches to thin coatings with distinct micro-/nano-textures remains challenging in the realm of materials chemistry. Herein, a general morphosynthetic method based on seeded mineralization was extended to achieve prismatic-type thin CaCO3 coatings on fibrous substrates for oil/water separation applications...
February 13, 2018: Langmuir: the ACS Journal of Surfaces and Colloids
Lucheng Li, Guoren Xu, Huarong Yu, Jia Xing
Dynamic membranes (DMs) have been of great interest in recent years because they can reduce energy consumption and costs during wastewater treatment. Dynamic membranes are a promising technology for the removal of low-density, non-degradable micro-particles, such as plastics, which are an increasingly prevalent wastewater contaminant. These micro-particles are not easily removed via conventional sedimentation and result in increased operation and maintenance costs in downstream unit processes. In this study, DMs were formed on a 90 μm supporting mesh through filtration of a synthetic wastewater...
January 29, 2018: Science of the Total Environment
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