PubMed Journals Articles About "Impregnated With Silver Nanoparticles AgTive Cannulation Central Venous" 
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Showing "impregnated with silver nanoparticles AgTive cannulation Central Venous" PubMed Articles 1–25 of 27,000+
Nanoparticle based agents often applied as coatings on biomaterials have shown promise in delivering the improved sterility against variety of microbes. In the present study, silk fibers (SF) were coated with chitosan impregnated with silver nanoparticles (Ag-C-SF). These Ag-C-SF fibers were characterized using scanning electron microscopy (SEM) with energy dispersive X-ray analysis, atomic force microscopy (AFM), Infra Red spectroscopy, Thermogravimetric Analysis and Microbiological assay techniques. AFM s...
Objectives- The purpose of this study was to determine whether junior residents had higher rates of first cannulation and overall success at central venous catheter insertions with the use of ultrasound (US) guidance compared to the landmark technique. Methods- We conducted a secondary analysis of data from a prospective randomized controlled study of junior residents from January 2007 through September 2008, which assessed the impact of simulation training on central venous catheter insertion success rates...
Venipuncture and intravenous cannulation are the most common painful procedures performed on children. The most widely used topical anesthetic is eutectic mixture of local anesthetics (EMLA). EMLA use is associated with a transient cutaneous vasoconstriction which can make it difficult to identify veins. We assessed with a prospective, multicenter, observational study whether EMLA interferes with venipuncture and intravenous cannulation. The primary study outcome was a success at first attempt in the course...
Biocidal Efficacy of Silver Impregnated Contact Lens Storage Cases In vitro.
PURPOSE: Silver-impregnated contact lens (CL) storage cases aim to reduce microbial contamination of storage cases during use, however there are limited data on their effectiveness. This study evaluated early anti-microbial activity of silver-impregnated CL cases and silver release characteristics in-vitro. METHODS: Three silver-impregnated CL storage cases Microblock, i-clean(R) and Nano-case(R) were evaluated. The test organisms included the ISO14729 panel and 2 clinical isolates, Delftia acidovorans and...
Rifampicin-miconazole-impregnated catheters save cost in jugular venous sites with tracheostomy.
Antimicrobial-impregnated catheters are more expensive than standard catheters (S-C). A higher incidence of catheter-related bloodstream infection (CRBSI) has been found in jugular venous access with tracheostomy than without tracheostomy. The objective of this study was to determine central venous catheter (CVC)-related costs (considering only the cost of the CVC, diagnosis of CRBSI, and antimicrobial agents used to treat CRBSI) using rifampicin-miconazole-impregnated catheters (RM-C) or S-C in jugular ven...
On the Fluorescence of Luminol in a Silver Nanoparticles Complex.
The photophysical properties of luminol in a silver nanoparticles complex have been studied by steady-state and time resolved fluorescence spectroscopy. The effect of the serum albumin on the luminol fluorescence in the silver nanoparticles has been also investigated. It was found that the fluorescence quantum yield value of luminol in a silver nanoparticles complex is ϕ = 0.00407. The decrease of the average fluorescence lifetime value of the luminol in the silver nanoparticles complex was found to be...
Persistent left superior vena cava: implications during central venous cannulation.
BACKGROUND: External ventricular drainage (EVD) placement for temporary cerebrospinal fluid (CSF) diversion is a frequent therapeutic procedure. Several types of EVD catheters are currently available, some of which have an antibacterial effect. This study compares the rates of CSF infections in patients with different types of EVD catheters. METHODS: This is a retrospective study of 403 patients with a total of 529 implanted EVDs. We analyze the occurrence of EVD-associated infections, microbiological diagn...
Silver nanoparticles were synthesized by biological method using cultural filtrate of Klebsiella pneumoniae cultured under simulated microgravity and silver nitrate solution as precursor. The nanoparticles exhibited typical plasmon absorption maximum of silver nanoparticles between 405 and 407nm. Spherical silver nanoparticles were found to have size between 15 and 37nm by TEM analysis. XRD pattern corresponding to planes (111), (200), (220) (311) revealed the crystalline nature of the biosynthesized silver...
Real-Time Ultrasound-Aided Central Vein Cannulation Failure Rate: Establishing a Benchmark.
BACKGROUND: The use of real-time two-dimensional B-mode ultrasound (RTUS)-aided central venous access device (CVAD) insertion has been recommended by health-care agencies, but a realistic failure rate for bedside attempts is unknown. METHODS: The failure rate of RTUS-aided CVAD insertion is estimated using data from adult inpatients and outpatients referred to a tertiary referral radiology department for a new CVAD insertion during the 2.5-year period ending February 29, 2008. Cannulation failure, complicat...
OBJECTIVE:: The antimetabolite drug, 5-fluorouracil, inhibits microbial growth. Coating of central venous catheters with 5-fluorouracil may reduce the risk of catheter infection. Our objective was to compare the safety and efficacy of central venous catheters externally coated with 5-fluorouracil with those coated with chlorhexidine and silver sulfadiazine. DESIGN:: Prospective, single-blind, randomized, active-controlled, multicentered, noninferiority trial. SETTING:: Twenty-five US medical center intensiv...
Central Venous Access Via External Jugular Vein in Children.
OBJECTIVE:: To determine the success rate and complications of using the external jugular (EJ) vein for central venous access in pediatric patients. METHODS:: Prospective cohort study of children who underwent attempts at EJ vein central venous access while receiving care in an 11-bed pediatric intensive care unit at an urban children's hospital. RESULTS:: Over a period of 15 months, 50 patients had EJ venous cannulation attempts. Central venous access was achieved in 45 patients (90%). Successful central v...
Silver nanoparticle (AgNP)-impregnated rice husks/rice hush ash (RHs/RHA) were successfully synthesized, and their potential application as antibacterial materials in water disinfection was investigated with particular attention given to the use of both white rice husk ash (WRHA) and black rice husk ash (BRHA) produced by the combustion of RHs as AgNP supports. AgNPs, with diameter of ∼20 nm, were anchored tightly onto RHA, with the emplacement of the AgNPs on these supports increasing the antibacterial a...
An aerosol-seed-assisted hybrid chemical route to synthesize anisotropic bimetallic nanoparticles.
Herein we report the development of anisotropic bimetallic nanoparticles where aerosol gold nanoparticles served as the seeds for the continuous deposition of silver atoms on their surfaces. Initially, aerosol gold nanoparticles were formed by spark discharge and then injected into a silver precursor solution in an impinging device. The gold nanoparticles acted as the seed particles, and catalyzed the reduction of the added silver ions in the presence of ultrasound to yield bimetallic (gold core-silver shel...
Interaction of silver nanoparticles with Tacaribe virus.
ABSTRACT: BACKGROUND: Silver nanoparticles possess many unique properties that make them attractive for use in biological applications. Recently they received attention when it was shown that 10 nm silver nanoparticles were bactericidal, which is promising in light of the growing number of antibiotic resistant bacteria. An area that has been largely unexplored is the interaction of nanomaterials with viruses and the possible use of silver nanoparticles as an antiviral agent. RESULTS: This research focuses o...
A facile method was developed for preparing uniform silver nanoparticles with small particle sizes of less than 10 nm at high concentrations, in which aniline was used to reduce silver nitrate (AgNO(3)) to silver nanoparticles in the presence of dodecylbenzenesulfonic acid (DBSA) as a stabilizer. Upon the addition of excess NaOH to the DBSA-aniline-AgNO(3) (DAA) system, the formation of silver nanoparticles was almost complete in just 2 min at 90 °C (in 94% yield). The average size of those resultant silve...
Bioconversion of Silver Salt into Silver Nanoparticles Using Different Microorganisms.
Abstract Recently, silver nanoparticles have generated enough interest due to their immense usage. Until now chemical synthesis has been a fast method to produce nanoparticles, but the release of environmental pollutants has raised caution. So a more subtle biochemical approach is in research. Three microorganisms, Aspergillus flavus, Phoma exigua and Bacillus megaterium, were selected to reduce silver nitrate to silver nanoparticles in aqueous form. All three microorganisms showed varying reducing capacity...
Silver nanocomposite films are found to be very effective material for anti-bacterial application. In the present work, sodium carboxylmethyl cellulose silver nanocomposite films (SCMC SNCF) were tried for antibacterial applications. To enhance their applicability novel film-silver nanoparticle-curcumin composites have been developed. SCMC SNCF are developed from sodium carboxylmethyl cellulose (SCMC), N,N ( 1 )-methylenebisacrylamide (MBA) and silver nitrate solution. These films were characterized by FTIR...
We aimed to compare the effectiveness of various catheters for prevention of catheter-related infection and to evaluate whether specific catheters are superior to others for reducing catheter-related infections. We identified randomised, controlled trials that compared different types of central venous catheter (CVC), evaluating catheter-related infections in a systematic search of articles published from January 1996 to November 2009 via Medline, Embase, Web of Science, and the Cochrane Central Register of...
A facile methodology has been developed by anchoring silver nanoparticles on to the macroporous methacrylic acid copolymer beads for disinfection of water in this study. Methacrylic acid copolymer beads are prepared by suspension polymerization technique. Silver nanoparticles formed on these copolymer beads by chemical reduction method are stable and are not washed away by water washing. Their stability is due to the interaction of nanoparticles with the carboxylic functional group on the copolymer beads. C...
ABSTRACT: Tween 80 (polysorbate 80) has been used as a reducing agent and protecting agent to prepare stable water-soluble silver nanoparticles on a large scale through a one-pot process, which is simple and environmentally friendly. Silver ions can accelerate the oxidation of Tween 80 and then get reduced in the reaction process. The well-ordered arrays such as ribbon-like silver nanostructures could be obtained by adjusting the reaction conditions. High-resolution transmission electron microscopy confirms...
Lectin sensitized anisotropic silver nanoparticles for detection of some bacteria.
A method of bacteria detection by sensitized anisotropic silver nanoparticles is presented. Anisotropic silver nanoparticles with two bands of surface plasmon resonance (SPR) are prepared and sensitized with potato lectin. These nanoparticles are able to detect three bacterial species: Escherichia coli, Bacillus subtilis and Staphylococcus aureus. The interaction of these bacteria with such nanoparticles induces drastic changes in optical spectra of nanoparticles that are correlated with bacteria titer. The...
Liquid injection atomic layer deposition of silver nanoparticles.
Silver nanoparticles are being developed for applications in plasmonics, catalysts and analytical methods, amongst others. Herein, we demonstrate the growth of silver nanoparticles using an atomic layer deposition (ALD) process for the first time. The silver was deposited from pulses of the organometallic precursor (hfac)Ag(1,5-COD) ((hexafluoroacetylacetonato)silver(I)(1,5-cyclooctadiene)) dissolved in a 0.1 M toluene solution. Catalytic oxidative dehydrogenation of the silver was achieved using intermitte...
Stabilisation of silver and copper nanoparticles in a chemically modified chitosan matrix.
This work describes the stabilisation of silver and copper nanoparticles in chemically modified chitosan colloidal solution. Chitosan-N-2-methylidene-hydroxy-pyridine-6-methylidene hydroxy thiocarbohydrazide (CSPTH) was used as a stabilising and reducing agent for silver and copper nanoparticles. The modified chitosan derivatives and the synthesised nanoparticles were characterised by Fourier transform infrared (FT-IR) spectroscopy, Ultraviolet-visible (UV-Vis) spectroscopy and X-ray diffraction (XRD). Part...
BACKGROUND: Cannulation of small arteries and veins in young children can be challenging. Although anesthesiologists frequently use ultrasound for placement of central venous lines and nerve blocks, its use for cannulation of small, peripheral vessels is less helpful. Ultrasound systems (7-15 MHz) currently used in clinical practice focus poorly at the sub-10-mm space and thus lack the resolution to allow accurate ultrasound-guided cannulation of small vessels. High-frequency micro-ultrasound (HFMU) is a n...
