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Bioburden

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https://www.readbyqxmd.com/read/28431851/ultraviolet-c-light-as-a-means-of-disinfecting-anesthesia-workstations
#1
Matthew Nottingham, Gene Peterson, Christopher Doern, Michelle Doll, Nadia Masroor, Kakotan Sanogo, Michael Stevens, Gonzalo Bearman
BACKGROUND: Anesthesia workstations (AWs) are a reservoir for pathogenic organisms potentially associated with surgical site infections. This study examined the effectiveness of the Tru-D SmartUVC device (Tru-D LLC, Nashville, TN) on bioburden reduction (BR) on AWs. METHODS: Strips of tissue inoculated with a known concentration of either Staphylococcus aureus, Enterococcus faecalis, or Acinetobacter sp were placed on 22 high-touch surfaces of an AW. Half of the AW surfaces received direct ultraviolet (UV) light exposure and half received indirect exposure...
April 18, 2017: American Journal of Infection Control
https://www.readbyqxmd.com/read/28416646/increasing-patient-safety-by-closing-the-sterile-production-gap-part-3-moist-heat-resistance-of-bioburden
#2
James P Agalloco
Terminal sterilization is considered the preferred means for the production of sterile drug products as it affords enhanced safety for the patient because the formulation is sterilized in its sealed, final container. Despite the obvious patient benefits, the use of terminal sterilization is artificially constrained by unreasonable expectations for the minimum time-temperature process to be used. The core misunderstanding with terminal sterilization is the notion that destruction of a high population of a resistant biological indicator microorganism is required...
April 17, 2017: PDA Journal of Pharmaceutical Science and Technology
https://www.readbyqxmd.com/read/28341262/pulsed-xenon-ultraviolet-light-disinfection-in-a-burn-unit-impact-on-environmental-bioburden-multidrug-resistant-organism-acquisition-and-healthcare-associated-infections
#3
Caroline Green, Jeremy C Pamplin, Kristine N Chafin, Clinton K Murray, Heather C Yun
Portable pulsed xenon ultraviolet disinfection (PPX-UVD) may reduce healthcare associated infections (HAI). There is limited data to inform use in burn intensive care units (BICU), where multidrug-resistant organisms (MDRO), especially gram negative rods (GNR), commonly cause disease. We evaluated PPX-UVD effects on environmental bioburden and rates of HAI and MDRO acquisition in a BICU. PPX-UVD was used for 3 months after standard cleaning of patient and operating rooms (ORs). Settle and touch plates in patient rooms and ORs were obtained after standard cleaning, pre-and post-PPX-UVD...
March 2017: Burns: Journal of the International Society for Burn Injuries
https://www.readbyqxmd.com/read/28336247/surgical-case-order-has-an-effect-on-the-risk-of-subsequent-periprosthetic-joint-infection
#4
Antonia F Chen, Michael M Kheir, Joshua M Greenbaum, Camilo Restrepo, Mitchell G Maltenfort, Javad Parvizi
BACKGROUND: Periprosthetic joint infection (PJI) after total joint arthroplasty (TJA) is a serious complication with multiple etiologies. Prior spine literature has shown that later cases in the day were more likely to develop surgical site infection. However, the effect of case order on PJI after TJA is unknown. This study aims to determine the influence of case order, prior infected case, and terminal cleaning on the risk for a subsequent PJI. METHODS: A retrospective, single-institution study was conducted on 31,499 TJAs performed from 2000 to 2014...
February 20, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28333393/laser-generated-shockwaves-enhance-antibacterial-activity-against-biofilms-in-vitro
#5
William Yao, Edward C Kuan, Nathan C Francis, Maie A St John, Warren S Grundfest, Zachary D Taylor
BACKGROUND AND OBJECTIVES: Bacterial biofilm formation within chronic wound beds, which provides an effective barrier against antibiotics, is a known cause of recalcitrant infections and a significant healthcare burden, often requiring repeated surgical debridements. Laser-generated shockwaves (LGS) is a novel, minimally invasive, and nonthermal modality for biofilm mechanical debridement which utilizes compressive stress waves, generated by photonic absorption in thin titanium films to mechanically disrupt the biofilm...
March 23, 2017: Lasers in Surgery and Medicine
https://www.readbyqxmd.com/read/28323795/assessment-of-severe-extremity-wound-bioburden-at-the-time-of-definitive-wound-closure-or-coverage-correlation-with-subsequent-postclosure-deep-wound-infection-bioburden-study
#6
Michael J Bosse, Clinton K Murray, Anthony R Carlini, Reza Firoozabadi, Theodore Manson, Daniel O Scharfstein, Joseph C Wenke, Mary Zadnik, Renan C Castillo
Infection remains the most common and significant complication after high-energy fractures. The Bioburden Study is a multicenter, prospective, observational cohort study of wound bacterial bioburden and antibiotic care in severe open lower extremity fractures. The aims of this study are to (1) characterize the contemporary extremity wound "bioburden" at the time of definitive wound closure; (2) determine the concordance between polymerase chain reaction results and hospital microbiology; (3) determine, among those who develop deep infections, the concordance between the pathogens at wound closure and at deep infection; and (4) compare the probability of deep infection between those who did and did not receive an appropriate course of antibiotics based on bioburden at the time of wound closure...
April 2017: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/28323456/stratosphere-conditions-inactivate-bacterial-endospores-from-a-mars-spacecraft-assembly-facility
#7
Christina L Khodadad, Gregory M Wong, Leandro M James, Prital J Thakrar, Michael A Lane, John A Catechis, David J Smith
Every spacecraft sent to Mars is allowed to land viable microbial bioburden, including hardy endospore-forming bacteria resistant to environmental extremes. Earth's stratosphere is severely cold, dry, irradiated, and oligotrophic; it can be used as a stand-in location for predicting how stowaway microbes might respond to the martian surface. We launched E-MIST, a high-altitude NASA balloon payload on 10 October 2015 carrying known quantities of viable Bacillus pumilus SAFR-032 (4.07 × 10(7) spores per sample), a radiation-tolerant strain collected from a spacecraft assembly facility...
April 2017: Astrobiology
https://www.readbyqxmd.com/read/28282220/identification-and-characterization-of-early-mission-phase-microorganisms-residing-on-the-mars-science-laboratory-and-assessment-of-their-potential-to-survive-mars-like-conditions
#8
Stephanie A Smith, James N Benardini, David Anderl, Matt Ford, Emmaleen Wear, Michael Schrader, Wayne Schubert, Linda DeVeaux, Andrzej Paszczynski, Susan E Childers
Planetary protection is governed by the Outer Space Treaty and includes the practice of protecting planetary bodies from contamination by Earth life. Although studies are constantly expanding our knowledge about life in extreme environments, it is still unclear what the probability is for terrestrial organisms to survive and grow on Mars. Having this knowledge is paramount to addressing whether microorganisms transported from Earth could negatively impact future space exploration. The objectives of this study were to identify cultivable microorganisms collected from the surface of the Mars Science Laboratory, to distinguish which of the cultivable microorganisms can utilize energy sources potentially available on Mars, and to determine the survival of the cultivable microorganisms upon exposure to physiological stresses present on the martian surface...
March 2017: Astrobiology
https://www.readbyqxmd.com/read/28281241/decellularized-cryopreserved-allografts-as-off-the-shelf-allogeneic-alternative-for-heart-valve-replacement-in-vitro-assessment-before-clinical-translation
#9
Laura Iop, Adolfo Paolin, Paola Aguiari, Diletta Trojan, Elisa Cogliati, Gino Gerosa
Cryopreserved allogeneic conduits are the elective biocompatible choice among currently available substitutes for surgical replacement in end-stage valvulopathy. However, degeneration occurs in 15 years in adults or faster in children, due to recipient's immunological reactions to donor's antigens. Here, human aortic valves were decellularized by TRICOL, based on Triton X-100 and sodium cholate, and submitted to standard cryopreservation (TRICOL-human aortic valves (hAVs)). Tissue samples were analyzed to study the effects of the combined procedure on original valve architecture and donor's cell removal...
March 9, 2017: Journal of Cardiovascular Translational Research
https://www.readbyqxmd.com/read/28256725/influence-of-intravenous-regional-limb-perfusion-with-amikacin-sulfate-on-staphylococcus-aureus-bioburden-in-distal-limb-wounds-in-horses
#10
Russell B Freeland, Samantha L Morello, Melissa DeLombaert, Victora Rajamanickam
OBJECTIVE: To quantify the influence of intravenous regional limb perfusion (IVRLP) with amikacin on bacterial bioburden in limb wounds. STUDY DESIGN: In vivo, experimental. ANIMALS: Four adult horses. METHODS: Full thickness wounds created on each dorsal metacarpus were inoculated with Staphylococcus aureus. One forelimb was randomly assigned to cephalic vein IVRLP with amikacin on days 2, 3, and 4 post-wounding. Biopsies on day 2 prior to IVRLP, and on days 5 and 8 were cultured to quantify wound bioburden (CFU/g)...
March 3, 2017: Veterinary Surgery: VS
https://www.readbyqxmd.com/read/28237738/self-sanitizing-copper-impregnated-surfaces-for-bioburden-reduction-in-patient-rooms
#11
John D Coppin, Frank C Villamaria, Marjory D Williams, Laurel A Copeland, John E Zeber, Chetan Jinadatha
Novel self-sanitizing copper oxide-impregnated solid surfaces have the potential to influence bioburden levels, potentially lowering the risk of transmission of pathogens in patient care environments. Our study showed persistently lower microbial burden over a 30-hour sampling period on a copper-impregnated tray table compared with a standard noncopper surface in occupied patient rooms after thorough initial disinfection.
February 22, 2017: American Journal of Infection Control
https://www.readbyqxmd.com/read/28229323/corr-insights-%C3%A2-what-orthopaedic-operating-room-surfaces-are-contaminated-with-bioburden-a-study-using-the-atp-bioluminescence-assay
#12
William L Hennrikus
No abstract text is available yet for this article.
February 22, 2017: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/28225711/reactive-oxygen-therapy-a-novel-therapy-in-soft-tissue-infection
#13
Matthew Dryden
PURPOSE OF REVIEW: The global burden of disease in skin and soft tissue lesions is enormous. Many chronic, poorly healing lesions get treated with antibiotics despite the lack of evidence for long-term antibiotics. There is a global antibiotic resistance crisis driven largely by inappropriate use of large volumes of antibiotics. One solution is to reduce the selection pressure on bacteria by reducing the volume of antibiotic use in medicine, agriculture and the environment. There are few novel antimicrobials...
April 2017: Current Opinion in Infectious Diseases
https://www.readbyqxmd.com/read/28219826/hot-topics-in-reactive-oxygen-therapy-antimicrobial-and-immunological-mechanisms-safety-and-clinical-applications
#14
REVIEW
Matthew Dryden, Jonathan Cooke, Rami Salib, Rebecca Holding, Sylvia L F Pender, Jill Brooks
Reactive oxygen species (ROS), when combined with various delivery mechanisms, has the potential to become a powerful novel therapeutic agent against difficult-to-treat infections, especially those involving biofilm. It is important in the context of the global antibiotic resistance crisis. ROS is rapidly active in vitro against all Gram-positive and Gram-negative bacteria tested. ROS also has antifungal and antiviral properties. ROS prevents the formation of biofilms caused by a range of bacterial species in wounds and respiratory epithelium...
February 17, 2017: Journal of Global Antimicrobial Resistance
https://www.readbyqxmd.com/read/28213334/reactive-oxygen-a-novel-antimicrobial-mechanism-for-targeting-biofilm-associated-infection
#15
REVIEW
Matthew S Dryden, Jonathan Cooke, Rami J Salib, Rebecca E Holding, Timothy Biggs, Ali A Salamat, Raymond N Allan, Rachel S Newby, Fenella Halstead, Beryl Oppenheim, Thomas Hall, Sophie C Cox, Liam M Grover, Zain Al-Hindi, Lilyann Novak-Frazer, Malcolm D Richardson
Reactive oxygen species (ROS) is a novel therapeutic strategy for topical or local application to wounds, mucosa or internal structures where there may be heavy bacterial bioburden with biofilm and chronic inflammation. Bacterial biofilms are a significant problem in clinical settings owing to their increased tolerance towards conventionally prescribed antibiotics and their propensity for selection of further antibacterial resistance. There is therefore a pressing need for the development of alternative therapeutic strategies that can improve antibiotic efficacy towards biofilms...
February 14, 2017: Journal of Global Antimicrobial Resistance
https://www.readbyqxmd.com/read/28196917/validation-of-milliflex%C3%A2-quantum-for-bioburden-testing-of-pharmaceutical-products
#16
Oliver Gordon, Marcel Goverde, Alexandra Staerk, David Roesti
This article reports the validation strategy used to demonstrate that the Milliflex® Quantum yielded non-inferior results to the traditional bioburden method. It was validated according to USP <1223>, Ph. Eur. 5.1.6 and PDA Technical Report No. 33 and comprised the validation parameters Robustness, Ruggedness, Repeatability, Specificity, Limit of Detection and Quantification, Accuracy, Precision, Linearity, Range and Equivalence in Routine Operation. For the validation, a combination of pharmacopeial ATCC strains as well as a broad selection of in-house isolates was used...
February 14, 2017: PDA Journal of Pharmaceutical Science and Technology
https://www.readbyqxmd.com/read/28182537/inter-rater-and-intra-rater-reliability-outcomes-of-a-rapid-bacteria-counting-system-with-pressure-ulcer-samples
#17
G Nakagami, M Mori, M Yoshida, A Kitamura, A Hayashi, T Miyagaki, S Sasaki, J Sugama, H Sanada
OBJECTIVE: Evaluating bacterial load in pressure ulcers (PUs) is key to combat infection; therefore, using technologies to measure bacterial count can be particularly useful. A rapid bacteria counting system was recently developed and introduced to the wound care field. However, its reliability was not established. This cross-sectional study aimed to evaluate the inter-rater and intra-rater reliability of bacterial count using this rapid counting system. METHOD: We took bacterial swabs from patients with category I or greater PUs to assess inter- and intra-rater reliability...
February 2017: Journal of Wound Care
https://www.readbyqxmd.com/read/28135201/use-of-a-dehydrated-amniotic-membrane-allograft-in-the-treatment-of-lower-extremity-wounds-a-retrospective-cohort-study
#18
Eric J Lullove
Injuries to the skin are extensively costly to the health care system. When caused by metabolic and vascular compromise, these injuries are even more foreboding for patients. They can result in chronic inflammation, reduced mobility, and chronic pain. MATERIALS AND METHODS: Twenty patients were selected from the author's patient population at the West Boca Center for Wound Healing for a retrospective cohort study. Patients underwent a run-in period of 2 weeks, where standard of care was used to clear the wound of bioburden...
January 23, 2017: Wounds: a Compendium of Clinical Research and Practice
https://www.readbyqxmd.com/read/28131655/a-return-to-the-basics-nurses-practices-and-knowledge-about-interventional-patient-hygiene-in-critical-care-units
#19
Azza H El-Soussi, Hayam I Asfour
BACKGROUND: The Nursing profession is struggling to return to basic nursing care to maintain patients' safety. "Interventional patient hygiene" (IPH) is a measurement model for reducing the bioburden of both the patient and health care worker, and its components are hand hygiene, oral care, skin care/antisepsis, and catheter site care. OBJECTIVES: To identify the level of nurses' practice and knowledge about interventional patient hygiene and identify barriers for implementing interventional patient hygiene in critical care units...
January 25, 2017: Intensive & Critical Care Nursing: the Official Journal of the British Association of Critical Care Nurses
https://www.readbyqxmd.com/read/28089965/increasing-patient-safety-by-closing-the-sterile-production-gap-part-2-implementation
#20
James Agalloco
Terminal sterilization is considered the preferred means for the production of sterile drug products as it affords enhanced safety for the patient as the formulation is filled into its final container, sealed and sterilized. Despite the obvious patient benefits, the use of terminal sterilization is artificially constrained by unreasonable expectations for the minimum time-temperature process to be used. The core misunderstanding with terminal sterilization is a fixation that destruction of a high population of a resistant biological indicator is required...
January 15, 2017: PDA Journal of Pharmaceutical Science and Technology
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