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https://www.readbyqxmd.com/read/29748933/common-genitourinary-catheters-a-systematic-approach-for-the-radiologist
#1
Helen Hr Kim, Sheryl Tulin-Silver, Richard N Yu, Jeanne S Chow
Catheters are commonly used to treat and diagnose urinary tract abnormalities in the pediatric population. This pictorial essay reviews commonly placed genitourinary catheters imaged by radiography, fluoroscopy, computed tomography (CT) and ultrasonography (US). The purpose of the catheter, how the catheter is placed, and the imaging findings associated with appropriately positioned catheters as well as misplaced and displaced catheters are described. It is important for radiologists to recognize common genitourinary catheters, and be familiar with their normal and abnormal positions as displacement is often first recognized by diagnostic imaging...
May 10, 2018: Pediatric Radiology
https://www.readbyqxmd.com/read/29665026/anhydrous-polymer-based-coating-with-sustainable-controlled-release-functionality-for-facile-efficacious-impregnation-and-delivery-of-antimicrobial-peptides
#2
Kaiyang Lim, Rathi Saravanan, Kian Long Kelvin Chong, Hwee Mian Sharon Goh, Ray Rong Yuan Chua, Paul Anantharajah Tambyah, Matthew Wook Chang, Kimberly A Kline, Susanna Su Jan Leong
Anhydrous polymers are actively explored as alternative materials to overcome limitations of conventional hydrogel-based antibacterial coating. However, the requirement for strong organic solvent in polymerization reactions often necessitates extra protection steps for encapsulation of target biomolecules, lowering encapsulation efficiency and increasing process complexity. This study reports a novel coating strategy that allows direct solvation and encapsulation of antimicrobial peptides (HHC36) into anhydrous polycaprolactone (PCL) polymer-based dual layer coating...
April 17, 2018: Biotechnology and Bioengineering
https://www.readbyqxmd.com/read/29626618/comparative-activity-of-silver-based-antimicrobial-composites-for-urinary-catheters
#3
Nikhil Thokala, Carmel Kealey, James Kennedy, Damien B Brady, Joseph Farrell
Biomedical polymers are an integral component in a wide range of medical device designs due to their range of desirable properties. However, extensive use of polymer materials in medical devices have also been associated with an increasing incidence of patient infections. Efforts to address this issue have included the incorporation of antimicrobial additives for developing novel antimicrobial polymeric materials. Silver with its high toxicity towards bacteria, oligodynamic effect and good thermal stability has been employed as an additive for polymeric medical devices...
April 4, 2018: International Journal of Antimicrobial Agents
https://www.readbyqxmd.com/read/29492256/a-case-report-of-squamous-cell-carcinoma-in-a-suprapubic-urinary-catheter-tract-surgical-excision-and-simultaneous-colostomy-formation
#4
Sinan Khadhouri, Dupinderjit Singh Rye, Manish Powari, Ian R Daniels, John S McGrath
Squamous cell carcinoma (SCC) arising from a suprapubic cystostomy tract is a rare complication of long-term suprapubic catheterization (SPC). A 53-year-old man with paraplegia secondary to spina bifida presented with a painful granulomatous lesion around his SPC site that was being treated with silver nitrate cauterization in the community. Consequently, he developed a sacral pressure sore due to reduced mobility from the pain. He also had increasing difficulties with defaecation secondary to his spina bifida...
February 2018: Journal of Surgical Case Reports
https://www.readbyqxmd.com/read/29215338/evaluation-of-antimicrobial-durability-and-anti-biofilm-effects-in-urinary-catheters-against-enterococcus-faecalis-clinical-isolates-and-reference-strains
#5
Didem Kart, Ayşe Semra Kustimur, Meral Sağıroğlu, Ayşe Kalkancı
BACKGROUND: Enterococcus faecalis, Escherichia coli, Staphylococcus epidermidis, Pseudomonas aeruginosa and Candida albicans biofilms are major causes of catheter-associated urinary tract infections. Antimicrobial-coated or impregnated urinary catheters are seen as a possible way to prevent these infections. AIMS: To determine the biofilm-forming ability of 89 E. faecalis isolates from urinary tract infections and to compare several urinary catheters for antimicrobial durability and the inhibitory effects on biofilm formation of different laboratory strains and clinical isolates of E...
December 1, 2017: Balkan Medical Journal
https://www.readbyqxmd.com/read/29204271/genome-sequencing-and-analysis-of-the-first-spontaneous-nanosilver-resistant-bacterium-proteus-mirabilis-strain-scdr1
#6
Amr T M Saeb, Khalid A Al-Rubeaan, Mohamed Abouelhoda, Manojkumar Selvaraju, Hamsa T Tayeb
Background: P. mirabilis is a common uropathogenic bacterium that can cause major complications in patients with long-standing indwelling catheters or patients with urinary tract anomalies. In addition, P. mirabilis is a common cause of chronic osteomyelitis in Diabetic foot ulcer (DFU) patients. We isolated P. mirabilis SCDR1 from a Diabetic ulcer patient. We examined P. mirabilis SCDR1 levels of resistance against Nanosilver colloids, the commercial Nanosilver and silver containing bandages and commonly used antibiotics...
2017: Antimicrobial Resistance and Infection Control
https://www.readbyqxmd.com/read/29046846/bi-layer-sandwich-film-for-antibacterial-catheters
#7
Gerhard Franz, Florian Schamberger, Hamideh Heidari Zare, Sara Felicitas Bröskamp, Dieter Jocham
Background: Approximately one quarter of all nosocomial infections can be attributed to the urinary tract. The infections are supposed to be mainly caused by implantations of urethral catheters and stents. A new catheter design is introduced with the aim to lower the high number of nosocomial urethral infections. In order to avoid limitations to use, the design is first applied to conventional commercially available balloon catheters. Results: The main feature of the design is a sandwich layer on both sides of the catheter wall, which is composed of a fragmented base layer of silver capped by a thin film of poly( p -xylylene)...
2017: Beilstein Journal of Nanotechnology
https://www.readbyqxmd.com/read/28830785/antibacterial-and-anti-encrustation-biodegradable-polymer-coating-for-urinary-catheter
#8
Eyas Dayyoub, Marion Frant, Shashank Reddy Pinnapireddy, Klaus Liefeith, Udo Bakowsky
Bacterial biofilm and crystalline deposits are the common causes of failure of long-term indwelling urinary catheter. Bacteria colonise the catheter surface causing serious infections in the urinary tract and encrustations that can block the catheter and induce trauma in patients. In this study, the strategy used to resist bacterial adhesion and encrustation represents a combination of the antibacterial effects of norfloxacin and silver nanoparticles and the PLGA-based neutralisation of alkali products of urea hydrolysis gained through the degradation of the polymer in an aqueous milieu...
October 5, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/28745297/foley-catheters-functionalised-with-a-synergistic-combination-of-antibiotics-and-silver-nanoparticles-resist-biofilm-formation
#9
Rajendran Mala, Antony Annie Aglin, Arul Selvaraj Ruby Celsia, Sivalingam Geerthika, Narbahvi Kiruthika, Chinnathambi VazagaPriya, Kumarapillai Srinivasa Kumar
Foley catheters are inevitable in health care unit. Pathogens colonise and form biofilm on catheter causing catheter-associated urinary tract infection. Therefore, the authors aimed to functionalise catheter to resist biofilm formation. The authors impregnated urinary catheters with a synergistic combination of antibiotics and silver nanoparticles (SNPs) to evaluate antibiofilm efficacy in vitro and in vivo. SNPs were synthesised using Spirulina platensis. Synergy between the SNPs and antibiotics was determined by the checker-board method...
August 2017: IET Nanobiotechnology
https://www.readbyqxmd.com/read/28623661/graphene-nanolayers-as-a-new-method-for-bacterial-biofilm-prevention-preliminary-results
#10
Łucja Dybowska-Sarapuk, Andrzej Kotela, Jakub Krzemiński, Marta Wróblewska, Halina Marchel, Magdalena Romaniec, Paweł Łęgosz, Małgorzata Jakubowska
Biofilms are microbial communities of surface-attached cells embedded in a self-produced extracellular matrix. They have been found to play a role in a wide variety of infections, including catheter-related urinary tract and bloodstream infections, and, therefore remain a significant source of morbidity and mortality among the world's population. Recently, much attention has been devoted to the prevention of biofilm formation on implant surfaces. Nanomaterials such as graphene, characterized by antibacterial activity and low toxicity to human cells, are promising candidates for biomedical applications...
July 1, 2017: Journal of AOAC International
https://www.readbyqxmd.com/read/28578163/efficacy-and-safety-of-urinary-catheters-with-silver-alloy-coating-in-patients-with-spinal-cord-injury-a-multicentric-pragmatic-randomized-controlled-trial-the-escale-trial
#11
Xavier Bonfill, David Rigau, Manuel Esteban-Fuertes, Juana M Barrera-Chacón, María L Jáuregui-Abrisqueta, Sebastian Salvador, Carolina M Alemán-Sánchez, Albert Borau, Manuel Bea-Muñoz, Begoña Hidalgo, Maria J Andrade, Juan R Espinosa, María José Martínez-Zapata
BACKGROUND: Patients with spinal cord injury (SCI) who carry indwelling urinary catheters have an increased risk of urinary tract infection (UTI). Antiseptic silver alloy-coated (SAC) silicone urinary catheters prove to be a promising intervention to reduce UTIs; however, current evidence cannot be extrapolated to patients with SCI. PURPOSE: This study aimed to assess the efficacy of SAC urinary catheters for preventing catheter-associated urinary tract infections...
May 31, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/28526271/an-in-vitro-urinary-catheterization-model-that-approximates-clinical-conditions-for-evaluation-of-innovations-to-prevent-catheter-associated-urinary-tract-infections
#12
R Y R Chua, K Lim, S S J Leong, P A Tambyah, B Ho
BACKGROUND: Catheter-associated urinary tract infections (CAUTI) account for approximately 25% of nosocomial infections globally, and often result in increased morbidity and healthcare costs. An additional concern is the presence of microbial biofilms which are major reservoirs of bacteria, especially antibiotic-resistant bacteria, in catheters. Since introduction of the use of closed drainage systems, innovations to combat CAUTI have not led to significant improvements in clinical outcomes...
May 17, 2017: Journal of Hospital Infection
https://www.readbyqxmd.com/read/28247658/-comparative-evaluation-of-the-efficacy-of-uncoated-and-coated-with-silver-silicone-urethral-catheters-for-prevention-of-urinary-tract-infections-among-patients-of-the-intensive-care-unit
#13
COMPARATIVE STUDY
V I Sergevnin, N M Klyuchareva, D P Antipin, E N Laricheva
The goal of the research is to compare and evaluate the efficiency of using silver - coated silicone urinary catheters and catheters without coating for prevention urinary tract infections. MATERIALS AND METHODS: The study included 57 adult patients of intensive care unit, which have silicone bladder catheters "Foley" without coating, and 57 patients were catheterized using catheters coated with silver. We revealed symptomatic and asymptomatic urinary tract infections in our research...
April 2016: Urologii︠a︡
https://www.readbyqxmd.com/read/28211358/a-prospective-interventional-study-to-examine-the-effect-of-a-silver-alloy-and-hydrogel-coated-catheter-on-the-incidence-of-catheter-associated-urinary-tract-infection
#14
P Hy Chung, C Wy Wong, C Kc Lai, H K Siu, D Nc Tsang, K Y Yeung, D Km Ip, P Kh Tam
INTRODUCTION: Catheter-associated urinary tract infection is a major hospital-acquired infection. This study aimed to analyse the effect of a silver alloy and hydrogel-coated catheter on the occurrence of catheter-associated urinary tract infection. METHODS: This was a 1-year prospective study conducted at a single centre in Hong Kong. Adult patients with an indwelling urinary catheter for longer than 24 hours were recruited. The incidence of catheter-associated urinary tract infection in patients with a conventional latex Foley catheter without hydrogel was compared with that in patients with a silver alloy and hydrogel-coated catheter...
February 17, 2017: Hong Kong Medical Journal, Xianggang Yi Xue za Zhi
https://www.readbyqxmd.com/read/28100054/efficacy-of-silver-hydrophilic-poly-p-xylylene-on-preventing-bacterial-growth-and-biofilm-formation-in-urinary-catheters
#15
Hamideh Heidari Zare, Viktorija Juhart, Attila Vass, Gerhard Franz, Dieter Jocham
Catheter associated urinary tract infections (CAUTI), caused by several strains of bacteria, are a common complication for catheterized patients. This may eventually lead to a blockage of the catheter due to the formation of a crystalline or amorphous biofilm. Inhibiting bacteria should result in a longer application time free of complaints. This issue has been investigated using an innovative type of silver-coated catheter with a semipermeable cap layer to prevent CAUTI. In this work, two different types of silver catheters were investigated, both of which were capped with poly(p-xylylene) (PPX-N) and exhibited different surface properties that completely changed their wetting conduct with water...
January 18, 2017: Biointerphases
https://www.readbyqxmd.com/read/27612730/the-potential-of-photo-deposited-silver-coatings-on-foley-catheters-to-prevent-urinary-tract-infections
#16
Ian Richard Cooper, Mauro Pollini, Federica Paladini
Catheter-associated urinary tract infection (CAUTI) represents one of the most common causes of morbidity and mortality. The resistance demonstrated by many microorganisms to conventional antibiotic therapies and the increasing health-care costs have recently encouraged the definition of alternative preventive strategies, which can have a positive effect in the management of infections. Antimicrobial urinary catheters have been developed through the photo-chemical deposition of silver coatings on the external and luminal surfaces...
December 1, 2016: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/27575798/nurse-driven-catheter-associated-urinary-tract-infection-reduction-process-and-protocol-development-through-an-academic-practice-partnership
#17
Pamela Johnson, Anna Gilman, Alicia Lintner, Ellen Buckner
Translating evidence-based practices to the bedside can be facilitated by an active academic-practice partnership between nursing faculty and frontline nursing staff. A collaborative effort between the university's academic nurses and the medical center's clinical nurses explored, created, implemented, and evaluated an evidence-based nurse-driven protocol for decreasing the rate of catheter-associated urinary tract infections. The nurse-driven protocol was piloted in 4 intensive care units and included nurse-driven orders for catheter discontinuation, utilization of smaller bore urinary catheters, addition of silver-based cleansing products for urinary catheter care, and education of staff on routine catheter care and maintenance...
October 2016: Critical Care Nursing Quarterly
https://www.readbyqxmd.com/read/27461341/application-of-targeted-molecular-and-material-property-optimization-to-bacterial-attachment-resistant-meth-acrylate-polymers
#18
Kevin Adlington, Nam T Nguyen, Elizabeth Eaves, Jing Yang, Chien-Yi Chang, Jianing Li, Alexandra L Gower, Amy Stimpson, Daniel G Anderson, Robert Langer, Martyn C Davies, Andrew L Hook, Paul Williams, Morgan R Alexander, Derek J Irvine
Developing medical devices that resist bacterial attachment and subsequent biofilm formation is highly desirable. In this paper, we report the optimization of the molecular structure and thus material properties of a range of (meth)acrylate copolymers which contain monomers reported to deliver bacterial resistance to surfaces. This optimization allows such monomers to be employed within novel coatings to reduce bacterial attachment to silicone urinary catheters. We show that the flexibility of copolymers can be tuned to match that of the silicone catheter substrate, by copolymerizing these polymers with a lower Tg monomer such that it passes the flexing fatigue tests as coatings upon catheters, that the homopolymers failed...
September 12, 2016: Biomacromolecules
https://www.readbyqxmd.com/read/27328334/catheter-associated-urinary-tract-infections-and-other-infections-in-patients-hospitalized-for-acute-stroke-a-prospective-cohort-study-of-two-different-silicone-catheters
#19
Karin Stenzelius, Liselott Laszlo, Magdalena Madeja, Hélène Pessah-Rasmusson, Magnus Grabe
OBJECTIVE: Catheter-associated urinary tract infection (CAUTI) is the most common healthcare-associated infection. The primary aim of this study was to investigate whether the use of a silicone catheter coated with an ultrathin layer of a combination of the noble metals gold, palladium and silver (BIP™-silicone catheter) could reduce the incidence of CAUTI and antibiotic prescription compared with a standard silicone catheter in a cohort of acute neurological patients suffering primarily from stroke...
December 2016: Scandinavian Journal of Urology
https://www.readbyqxmd.com/read/27207160/first-report-of-macroscopic-biofilm-formation-caused-by-candida-albicans-on-silver-hydrogel-coated-urinary-catheters
#20
Mehmet Burak Selek, Tuğba Kula Atik, Bayhan Bektöre, Bülent Atik, Serkan Demir, Orhan Baylan, Mustafa Özyurt
We report macroscopic biofilms on silver hydrogel-coated urinary catheters in 2 patients from 2 different intensive care units. The catheters were removed on observation of a white, jelly layer on the catheters, respectively, 9 and 21 days after insertion. Yeast cells and pseudohyphal structures were observed with microscopy. Both isolates were identified as Candida albicans. To our knowledge, these are the first cases demonstrating the formation of macroscopic biofilm layers on silver nitrate-coated catheters in the literature...
October 1, 2016: American Journal of Infection Control
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