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Chlorhexidine

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https://www.readbyqxmd.com/read/28811083/phenotypic-chlorhexidine-and-triclosan-susceptibility-in-clinical-staphylococcus-aureus-isolates-in-australia
#1
C Hughes, J Ferguson
Antiseptics such as chlorhexidine gluconate and triclosan are widely used in healthcare settings for both skin antisepsis and decolonisation of Staphylococcus aureus. We determined the minimum inhibitory concentration (MIC) of 198 methicillin susceptible and resistant Staphylococcus aureus clinical isolates to both chlorhexidine and triclosan using an agar dilution method. Of these, 10% (19/198) showed a raised MIC to chlorhexidine and 3% (6/198) showed an elevated MIC to triclosan. The multilocus sequence type (MLST) of each isolate was predicted using a binary method, and although ST93-MRSA-IV was the most common, ST22-MRSA-IV was shown to have statistically higher chlorhexidine MIC values compared with non ST22-MRSA-IV isolates (z = -8...
August 12, 2017: Pathology
https://www.readbyqxmd.com/read/28809751/influence-of-topical-iodine-containing-antiseptics-used-during-delivery-on-recall-rate-of-congenital-hypothyroidism-screening-program
#2
Majid Valizadeh, Farzaneh Moezzi, Zohreh Khavassi, Mohammad Movahedinia, Seideh Mazloomzadeh, Ladan Mehran
BACKGROUND: The proportion of newborns recalled during neonatal screening programs for congenital hypothyroidism (CH) varies substantially by country and may be higher in settings where povodine iodine (PVP-I) is used during delivery. We assessed this hypothesis by substituting PVP-I for chlorhexidine (CHL) and evaluated the reduction in the recall rate of the Irainian newborn screening program. METHODS: This study investigated 2282 neonates of mothers admitted to a local hospital for delivery between December 2012 and October 2013...
August 15, 2017: Journal of Pediatric Endocrinology & Metabolism: JPEM
https://www.readbyqxmd.com/read/28808700/effect-of-chlorhexidine-and-ethanol-on-microleakage-of-composite-resin-restoration-to-dentine
#3
Iman Ramezanian Nik, Ehsan Baradaran Naseri, Sara Majidinia, Sara Ramezanian Nik, Mohammad Jafari Giv
OBJECTIVE: To evaluate the effect of chlorhexidine and ethanol on microleakage of composite resin restoration to dentine. METHODS: Class II cavities with dentinal margin were prepared on 96 premolar teeth. All specimens were acid-etched, rinsed and dried. Then the samples were randomly divided into four groups according to pre-treatment of the dentine: no treatment (control group); treatment with 100% ethanol for 60 s (group 2); treatment with 2% chlorhexidine for 60 s (group 3); 100% ethanol for 60 s and then 2% chlorhexidine for 60 s (group 4)...
2017: Chinese Journal of Dental Research
https://www.readbyqxmd.com/read/28803661/daily-bathing-strategies-and-cross-transmission-of-multidrug-resistant-organisms-impact-of-chlorhexidine-impregnated-wipes-in-a-multidrug-resistant-gram-negative-bacteria-endemic-intensive-care-unit
#4
Jesus Ruiz, Paula Ramirez, Esther Villarreal, Monica Gordon, Inmaculada Saez, Alfonso Rodríguez, María Jesús Castañeda, Álvaro Castellanos-Ortega
BACKGROUND: Health-care associated infections are a major cause of morbidity and mortality in critical care units. The aim of this study is to evaluate the effectiveness of chlorhexidine gluconate (CHG)-impregnated wipes in the daily bathing of patients in an intensive care unit (ICU) to prevent cross-transmission and colonization by multidrug-resistant organisms (MDROs) METHODS: Prospective cohort study with an intervention of 11 months. The intervention consisted of using CHG-impregnated wipes for the daily bathing of patients on mechanical ventilation or colonized by MDROs...
August 10, 2017: American Journal of Infection Control
https://www.readbyqxmd.com/read/28799984/lidocaine-spray-as-a-local-analgesic-for-intravenous-cannulation-a-randomized-clinical-trial
#5
Joris Datema, Jeroen Veldhuis, Jolita Bekhof
OBJECTIVES: Lidocaine spray is an effective analgesic of mucous membranes. Lidocaine spray is also used during intravenous (i.v.) cannulation, especially in children. However, the analgesic effect of lidocaine spray during i.v. cannulation has not been studied. We aimed to assess the analgesic effectiveness of lidocaine spray during i.v. cannulation. METHODS: We conducted a randomized, double-blinded, placebo-controlled trial in seventeen healthy adults who received an i...
August 10, 2017: European Journal of Emergency Medicine: Official Journal of the European Society for Emergency Medicine
https://www.readbyqxmd.com/read/28799881/prevalence-and-microbiological-characteristics-of-qaca-b-positive-methicillin-resistant-staphylococcus-aureus-isolates-in-a-surgical-intensive-care-unit
#6
Oh-Hyun Cho, Ki-Ho Park, Ji Young Song, Jeong Min Hong, Taeeun Kim, Sun In Hong, Sunjoo Kim, In-Gyu Bae
The increasing use of chlorhexidine for methicillin-resistant Staphylococcus aureus (MRSA) decolonization has raised concerns about the emergence of resistance to or tolerance of this antiseptic. We examined the frequency and characteristics of qacA/B chlorhexidine tolerance genes among MRSA isolates in a surgical intensive care unit (ICU) where MRSA-colonized patients are decolonized by chlorhexidine bathing. The MRSA isolates were evaluated for chlorhexidine susceptibility, mupirocin resistance, molecular typing, agr functionality, and the heterogeneous vancomycin-intermediate S...
August 11, 2017: Microbial Drug Resistance: MDR: Mechanisms, Epidemiology, and Disease
https://www.readbyqxmd.com/read/28797593/osteo-cutaneous-acanthamoebiasis-in-a-non-immunocompromised-patient-with-a-favorable-outcome
#7
Megha Sharma, Shashi Sharma Sudhan, Sonali Sharma, Kirti Megha, Ritambhra Nada, Sumeeta Khurana
Osteo-cutaneous form is a rare presentation of acanthamoebiasis. We present the first such case from India in an apparently healthy male who developed cutaneous lesion with bone involvement after traumatic inoculation of Acanthamoeba cysts. The diagnosis was established by routine microbiological techniques and confirmed by 18SrRNA gene sequencing. Aggressive therapy with terbinafine, chlorhexidine, rifampicin and co-trimoxazole was successful in clearing the lesion and preventing encephalitis.
August 7, 2017: Parasitology International
https://www.readbyqxmd.com/read/28797303/combined-antioxidant-effects-of-neem-extract-bacteria-red-blood-cells-and-lysozyme-possible-relation-to-periodontal-disease
#8
Leali Heyman, Yael Houri-Haddad, Samuel N Heyman, Isaac Ginsburg, Yossi Gleitman, Osnat Feuerstein
BACKGROUND: The common usage of chewing sticks prepared from Neem tree (Azadirachta indica) in India suggests its potential efficacy in periodontal diseases. The objective of this study is to explore the antibacterial effects of Neem leaf extract on the periodontophatic bacteria Porphyromonas gingivalis and Fusobacterium nucleatum, and its antioxidant capacities alone and in combination with bacteria and polycationic peptides that may be at the site of inflammation. METHODS: Neem leaf extract was prepared by ethanol extraction...
August 10, 2017: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/28796148/pain-and-antisepsis-after-ocular-administration-of-povidone-iodine-versus-chlorhexidine
#9
Carmen Oakley, Penny Allen, Joobin Hooshmand, Brendan J T Vote
PURPOSE: To investigate ocular bacterial count before and after antisepsis with aqueous chlorhexidine (AC) or povidone-iodine (PI) and to assess discomfort with each agent. METHODS: Bacterial swabs were taken from participants' eyes before and after antisepsis. These underwent microscopy, culture, and sensitivity testing. Aqueous chlorhexidine drops were administered to left eyes and PI to right eyes. Participants rated their pain (scale 0-10) for each eye but were blinded to the type of drop...
August 8, 2017: Retina
https://www.readbyqxmd.com/read/28794410/oral-health-related-quality-of-life-in-patients-with-stroke-a-randomized-clinical-trial-of-oral-hygiene-care-during-outpatient-rehabilitation
#10
Ruoxi Dai, Otto L T Lam, Edward C M Lo, Leonard S W Li, Colman McGrath
This study was to evaluate the effectiveness of oral hygiene care in improving oral health- and health-related quality of life (OHRQoL and HRQoL) among patients receiving outpatient stroke rehabilitation. Subjects were randomized to: (1) a conventional oral hygiene care programme (COHCP) comprising a manual toothbrush, and oral hygiene instruction, or (2) an advanced oral hygiene care programme (AOHCP) comprising a powered toothbrush, 0.2% chlorhexidine mouthrinse, and oral hygiene instruction. The interventional period lasted for 3 months, followed by a 3-month observational period...
August 9, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28791559/laparoscopic-lens-fogging-solving-a-common-surgical-problem-in-standard-and-robotic-laparoscopes-via-a-scientific-model
#11
Todd G Manning, Nathan Papa, Marlon Perera, Shannon McGrath, Daniel Christidis, Munad Khan, Richard O'Beirne, Nicholas Campbell, Damien Bolton, Nathan Lawrentschuk
BACKGROUND: Laparoscopic lens fogging (LLF) hampers vision and impedes operative efficiency. Attempts to reduce LLF have led to the development of various anti-fogging fluids and warming devices. Limited literature exists directly comparing these techniques. We constructed a model peritoneum to simulate LLF and to compare the efficacy of various anti-fogging techniques. MATERIALS AND METHODS: Intraperitoneal space was simulated using a suction bag suspended within an 8 L container of water...
August 8, 2017: Surgical Endoscopy
https://www.readbyqxmd.com/read/28790056/alcoholic-versus-aqueous-chlorhexidine-for-skin-antisepsis-the-avalanche-trial
#12
RANDOMIZED CONTROLLED TRIAL
Daniel Charles, Clare F Heal, Meth Delpachitra, Michael Wohlfahrt, Debbie Kimber, Julie Sullivan, Sheldon Browning, Sabine Saednia, Alexandra Hardy, Jennifer Banks, Petra Buttner
BACKGROUND: Preoperative skin antisepsis is routine practice. We compared alcoholic chlorhexidine with aqueous chlorhexidine for skin antisepsis to prevent surgical site infection after minor skin excisions in general practice. METHODS: We conducted this prospective, multicentre, randomized controlled trial in 4 private general practices in North Queensland, Australia, from October 2015 to August 2016. Consecutive adult patients presenting for minor skin excisions were randomly assigned to undergo preoperative skin antisepsis with 0...
August 8, 2017: CMAJ: Canadian Medical Association Journal, Journal de L'Association Medicale Canadienne
https://www.readbyqxmd.com/read/28790050/anaphylaxis-after-disinfection-with-2-chlorhexidine-wand-applicator
#13
Sameer Bahal, Samriti Sharma, Lene Heise Garvey, Vasantha Nagendran
A 54-year-old man with end-stage renal failure attended for dialysis. Within seconds of applying 2% w/v chlorhexidine (ChloraPrep 3 mL Wand Applicator) to the skin surrounding the insertion point of his dialysis catheter (Tesio catheter), he developed pruritus, urticaria, shortness of breath, hypotension and reduced responsiveness. Treatment for anaphylaxis was initiated with rapid improvement of his symptoms, and he made a full recovery. Allergy to chlorhexidine was confirmed with skin testing, and the patient was warned against all future exposure to chlorhexidine...
August 8, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28774612/biomarkers-of-end-of-shift-exposure-to-disinfection-byproducts-in-nurses
#14
Solomon Ioannou, Xanthi D Andrianou, Pantelis Charisiadis, Konstantinos C Makris
Increased disinfectant use commonly takes place in hospitals and other health care settings. A cross-sectional study among active nurses in two Cypriot public hospitals (n=179) was conducted to examine the prevalence of exposure to disinfection byproducts (DBPs), such as trihalomethanes (THMs) using both self-reported information and biomarker measurements. The objectives of this study were to: i) quantify the magnitude and variability of occupational exposure to disinfectants/DBPs in nurses, ii) generate job exposure matrices (JEM) and job task exposure matrices (JTEM) for disinfectants, and iii) assess the major determinants of urinary THMs in nurses...
August 2017: Journal of Environmental Sciences (China)
https://www.readbyqxmd.com/read/28774122/cellulose-nanocrystal-membranes-as-excipients-for-drug-delivery-systems
#15
Ananda M Barbosa, Eduardo Robles, Juliana S Ribeiro, Rafael G Lund, Neftali L V Carreño, Jalel Labidi
In this work, cellulose nanocrystals (CNCs) were obtained from flax fibers by an acid hydrolysis assisted by sonochemistry in order to reduce reaction times. The cavitation inducted during hydrolysis resulted in CNC with uniform shapes, and thus further pretreatments into the cellulose are not required. The obtained CNC exhibited a homogeneous morphology and high crystallinity, as well as typical values for surface charge. Additionally, CNC membranes were developed from CNC solution to evaluation as a drug delivery system by the incorporation of a model drug...
December 12, 2016: Materials
https://www.readbyqxmd.com/read/28773797/novel-cavity-disinfectants-containing-quaternary-ammonium-monomer-dimethylaminododecyl-methacrylate
#16
Wen Zhou, Biao Ren, Xuedong Zhou, Hockin H K Xu, Michael D Weir, Mingyun Li, Mingye Feng, Jiyao Li, Xin Xu, Lei Cheng
This study was set to assess the possible benefits of novel cavity disinfectants with 5% dimethylaminododecyl methacrylate (DMADDM); and compare the effectiveness of saliva microbial-aging method with water-aging in measuring the changing of resin-dentin bond strength. Three cavity disinfectants were tested: 0.2% Chlorhexidine (CHX); 5% DMADDM; and 5% DMADDM + 0.2% CHX. Microtensile bond strength (μTBS) test was performed after microbial-aging with saliva microbial or water aging for one month. Hydroxyproline (HYP), the production of collagen degradation, was measured spectrophotometrically...
August 9, 2016: Materials
https://www.readbyqxmd.com/read/28769900/intrinsic-and-extrinsic-aspects-on-campylobacter-jejuni-biofilms
#17
Roberta T Melo, Eliane P Mendonça, Guilherme P Monteiro, Mariana C Siqueira, Clara B Pereira, Phelipe A B M Peres, Heriberto Fernandez, Daise A Rossi
Biofilm represents a way of life that allows greater survival of microorganisms in hostile habitats. Campylobacter jejuni is able to form biofilms in vitro and on surfaces at several points in the poultry production chain. Genetic determinants related to their formation are expressed differently between strains and external conditions are decisive in this respect. Our approach combines phylogenetic analysis and the presence of seven specific genes linked to biofilm formation in association with traditional microbiology techniques, using Mueller Hinton and chicken juice as substrates in order to quantify, classify, determine the composition and morphology of the biomass of simple and mixed biofilms of 30 C...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28767690/a-simplified-prevention-bundle-with-dual-hand-hygiene-audit-reduces-early-onset-ventilator-associated-pneumonia-in-cardiovascular-surgery-units-an-interrupted-time-series-analysis
#18
Kang-Cheng Su, Yu Ru Kou, Fang-Chi Lin, Chieh-Hung Wu, Jia-Yih Feng, Shiang-Fen Huang, Tao-Fen Shiung, Kwei-Chun Chung, Yu-Hsiu Tung, Kuang-Yao Yang, Shi-Chuan Chang
BACKGROUND: To investigate the effect of a simplified prevention bundle with alcohol-based, dual hand hygiene (HH) audit on the incidence of early-onset ventilation-associated pneumonia (VAP). METHODS: This 3-year, quasi-experimental study with interrupted time-series analysis was conducted in two cardiovascular surgery intensive care units in a medical center. Unaware external HH audit (eHH) performed by non-unit-based observers was a routine task before and after bundle implementation...
2017: PloS One
https://www.readbyqxmd.com/read/28766815/rhamnolipids-and-lactonic-sophorolipids-natural-antimicrobial-surfactants-for-oral-hygiene
#19
M Elshikh, I Moya-Ramírez, H Moens, S Roelants, W Soetaert, R Marchant, I M Banat
AIMS: To assess the efficacy of rhamnolipid (mixture of mono- and di-rhamnolipid congeners, purified monorhamnolipid, dirhamnolipid and lactonic sophorolipid biosurfactants against pathogens important for oral hygiene. METHODS AND RESULTS: Acquired and produced biosurfactants were fully characterised to allow the antimicrobial activity to be assigned to the biosurfactant congeners. Antimicrobial activity was assessed using the resazurin aided microdilution method...
August 2, 2017: Journal of Applied Microbiology
https://www.readbyqxmd.com/read/28765589/comparing-the-action-of-ht61-and-chlorhexidine-on-natural-and-model-staphylococcus-aureus-membranes
#20
Alasdair Tm Hubbard, Anthony Rm Coates, Richard D Harvey
HT61 and chlorhexidine (CHX) are both putative membrane-active antimicrobials, which non-specifically target the anionic lipids abundant in bacterial membranes. In model systems, the ability of these antimicrobials to partition into lipid monolayers and increase the permeability of lipid bilayers is dependent upon the presence and proportion of anionic lipids such as phosphatidylglycerol. Despite their apparent similarity in membrane affinity, we have found that HT61 and CHX differ in the extent to which they affect membrane integrity...
August 2, 2017: Journal of Antibiotics
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