Characterizing the 2.4 GHz Spectrum in a Hospital Environment: Modeling and Applicability to Coexistence Testing of Medical Devices

2017 ◽  
Vol 59 (1) ◽  
pp. 58-66 ◽  
Author(s):  
Mohamad Omar Al Kalaa ◽  
Walid Balid ◽  
Hazem H. Refai ◽  
Nickolas J. LaSorte ◽  
Seth J. Seidman ◽  
...  
Keyword(s):  
Medical Devices ◽  
Hospital Environment ◽  
Environment Modeling

Features of use in practical health care of the device «Multi-layer mat with an adhesive surface according to TA 32.50.50-009-21109965-2019, WITH ACCESSORIES»

2021 ◽  
pp. 70-75
Author(s):  
Viktor Yurievich Kozlov ◽  
Larisa Arkadyevna Karaseva
Keyword(s):  
Health Care ◽  
Healthcare Professional ◽  
Medical Devices ◽  
Health Needs ◽  
Hospital Environment ◽  
Healthcare Industry ◽  
Adhesive Surface

A safe hospital environment should fully provide the patient and healthcare professional with the comfort and safety conditions that effectively address vital health needs. To this end, medical devices are manufactured for the healthcare industry to ensure the safety of the hospital environment for patients and medical workers [2, 3].

scholarly journals Bio contamination of surfaces and medical devices in controlled environment areas at a hospital in Morocco

2021 ◽  
Vol 319 ◽  
pp. 01080
Author(s):  
Samira Jaouhar ◽  
Abdelhakim El Ouali Lalami ◽  
Khadija Ouarrak ◽  
Jawad Bouzid ◽  
Mohammed Maoulouaa ◽  
...  
Keyword(s):  
Operating Room ◽  
Medical Devices ◽  
Medical Equipment ◽  
Microbiological Quality ◽  
Hospital Environment ◽  
P Value ◽  
Controlled Environment ◽  
Coagulase Negative Staphylococci ◽  
Burn Unit ◽  
Sterilization Service

The hospital environment, especially medical devices and surfaces, represents a secondary reservoir for pathogens. This work aims to evaluate the microbiological quality of surfaces and medical equipment of controlled environment services (burn unit, operating room, and sterilization service) at a hospital in Meknes (center of Morocco). This study was carried out for three months (September-December of 2017). A total of 63 samples were taken by swabbing technique from different surfaces and medical equipment after bio-cleaning. Identification was performed according to conventional bacteriological methods and by microscopic observation for fungi. The study showed that 68% of the surface was contaminated. The operating room recorded a rate of 93% of contamination (p-value <0.01), 83% for sterilization service, and 47% for burn unit. A percentage of 67% of the isolates were identified as Gram-positive bacteria against 32% Gram-negative bacteria (p-value <0.05). Bacterial identification showed Coagulase-negative Staphylococci (45%), Enterobacter cloacae (14%), Micrococcus sp (10%), Klebsiella pneumoniae, peptostreptococcus sp and Pseudomonas fluorescens (7% for each one), Escherichia coli, and Methicillin-resistant Staphylococcus aureus (5% for each one). These results require corrective action represented by rigorous cleaning and disinfection procedures.

scholarly journals Susceptibility patterns of bacteria isolated from the hospital environment towards disinfectants commonly used for surfaces and medical devices

2021 ◽  
Vol 319 ◽  
pp. 01081
Author(s):  
Samira Jaouhar ◽  
Abdelhakim El Ouali Lalami ◽  
Jawad Bouzid ◽  
Ikrame Zeouk ◽  
Khadija Bekhti
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Medical Devices ◽  
Staphylococcus Epidermidis ◽  
Pathogenic Bacteria ◽  
Hospital Environment ◽  
Gram Positive ◽  
Microdilution Method ◽  
Bacillus Spp ◽  
Didecyldimethylammonium Chloride

This study aimed to evaluate the bactericidal activity of common disinfectants used for surfaces and medical devices. Sodium hypochlorite (D1), disinfectant (D2) composed of N-(3-aminopropyl)-N-dodecylpropane-1,3-diamine, chloride de didecyldimethylammonium, and disinfectant (D3) composed of Didecyldimethylammonium chloride and Polyhexamethylene biguanide hydrochloride, were tested against 15 strains isolated from the hospital environment and four reference bacteria. The microdilution method was performed to assess antimicrobial activity. The susceptibility was evaluated by comparing the minimum inhibitory dilution with the dilution of disinfectant recommended by the manufacture. D1 and D2 were active against Staphylococcus epidermidis, Staphylococcus saprophyticus, Enterobacter cloacae, Escherichia coli, Pseudomonas fluorescens, Methicillin-resistant Staphylococcus aureus, Bacillus spp, Corynebacterium spp, Gram-positive bacillus, Escherichia coli ATCC 25922, Bacillus subtilis ATCC 3366, and Pseudomonas aeruginosa ATCC 27853 strains but not active against Micrococcus spp, and Staphylococcus aureus ATCC 29213. D3 was ineffective against Micrococcus spp, Bacillus Gram Positive, Staphylococcus epidermidis, and Escherichia coli ATCC 25922. Therefore, D1 and D2 can eliminate most pathogenic bacteria in hospitals, in comparison to D3. It is necessary to monitor the antibacterial activity of disinfectants against reference strains but also against those usually present on surfaces. The obtained results could have promising applications in controlling the emergence of nosocomial infections.

scholarly journals Efficacy of moist heat decontamination against various pathogens for the reuse of N95 respirators in the COVID-19 emergency

2020 ◽  
Author(s):  
Ebru Oral ◽  
Keith K Wannomae ◽  
Dmitry Gil ◽  
Rachel Connolly ◽  
Joseph A Gardecki ◽  
...  
Keyword(s):  
Medical Devices ◽  
Healthcare Workers ◽  
Rna Viruses ◽  
Hospital Environment ◽  
Bacterial Spores ◽  
Enveloped Viruses ◽  
Moist Heat ◽  
Disinfection Methods ◽  
High Level ◽  
N95 Respirators

Decontamination of N95 respirators has become critical to alleviate PPE shortages for healthcare workers in the current COVID-19 emergency. The factors that are considered for the effective reuse of these masks are the fit, filter efficiency and decontamination/disinfection level both for SARS-CoV2, which is the causative virus for COVID-19, and for other organisms of concern in the hospital environment such as Staphylococcus aureus or Clostridium difficile.The efficacy of inactivation or eradication against various pathogens should be evaluated thoroughly to understand the level of afforded disinfection. Methods commonly used in the sterilization of medical devices such as ionizing radiation, vaporized hydrogen peroxide, and ethylene oxide can provide a high level of disinfection, defined as a 6 log10 reduction, against bacterial spores, considered the most resistant microorganisms. CDC guidance on the decontamination and reuse of N95s also includes the use of moist heat (60°C, 80% relative humidity, 15-30 min) as a possible recommendation based on literature showing preservation of fit efficiency and inactivation of H1N1 on spiked masks.Here, we explored the efficacy of using moist heat under these conditions as a decontamination method for an N95 respirator (3M 1860S, St. Paul, MN) against various pathogens with different resistance; enveloped RNA viruses, Gram (+/-) bacteria, and non-enveloped viruses.

scholarly journals Transfer of pathogens to and from patients, healthcare providers, and medical devices during care activity—a systematic review and meta-analysis

2018 ◽  
Vol 39 (9) ◽  
pp. 1093-1107 ◽  
Author(s):  
Aline Wolfensberger ◽  
Lauren Clack ◽  
Stefan P. Kuster ◽  
Simone Passerini ◽  
Lona Mody ◽  
...  
Keyword(s):  
Systematic Review ◽  
Medical Devices ◽  
Meta Analysis ◽  
Healthcare Providers ◽  
Sampling Technique ◽  
Hospital Environment ◽  
Cochrane Library ◽  
Systematic Research ◽  
Arcsine Transformation ◽  
The Cochrane Library

AbstractObjectiveThe transfer of pathogens may spread antimicrobial resistance and lead to healthcare-acquired infections. We performed a systematic literature review to generate estimates of pathogen transfer in relation to healthcare provider (HCP) activities.MethodsFor this systematic review and meta-analysis, Medline/Ovid, EMBASE, and the Cochrane Library were searched for studies published before July 7, 2017. We reviewed the literature, examining transfer of pathogens associated with HCP activities. We included studies that (1) quantified transfer of pathogens from a defined origin to a defined destination surface; (2) reported a microbiological sampling technique; and (3) described the associated activity leading to transfer. For studies reporting transfer frequencies, we extracted data and calculated the estimated proportion using Freeman-Tukey double arcsine transformation and the DerSimonian-Laird random-effects model.ResultsOf 13,121 identified articles, 32 were included. Most articles (n=27, 84%) examined transfer from patients and their environment to HCP hands, gloves, and gowns, with an estimated proportion for transfer frequency of 33% (95% confidence interval [CI], 12%–57%), 30% (95% CI, 23%–38%) and 10% (95% CI, 6%–14%), respectively. Other articles addressed transfer involving the hospital environment and medical devices. Risk factor analyses in 12 studies suggested higher transfer frequencies after contact with moist body sites (n=7), longer duration of care (n=5), and care of patients with an invasive device (n=3).ConclusionsRecognizing the heterogeneity in study designs, the available evidence suggests that pathogen transfer to HCPs occurs frequently. More systematic research is urgently warranted to support targeted and economic prevention policies and interventions.

scholarly journals CouldHistoplasma capsulatumBe Related to Healthcare-Associated Infections?

2015 ◽  
Vol 2015 ◽  
pp. 1-11 ◽  
Author(s):  
Laura Elena Carreto-Binaghi ◽  
Lisandra Serra Damasceno ◽  
Nayla de Souza Pitangui ◽  
Ana Marisa Fusco-Almeida ◽  
Maria José Soares Mendes-Giannini ◽  
...  
Keyword(s):  
Medical Devices ◽  
Histoplasma Capsulatum ◽  
Paracoccidioides Brasiliensis ◽  
Etiologic Agent ◽  
Hospital Environment ◽  
Healthcare Associated Infections ◽  
Filamentous Form ◽  
Etiologic Agents ◽  
Cross Transmission ◽  
Healthcare Associated

Healthcare-associated infections (HAI) are described in diverse settings. The main etiologic agents of HAI are bacteria (85%) and fungi (13%). Some factors increase the risk for HAI, particularly the use of medical devices; patients with severe cuts, wounds, and burns; stays in the intensive care unit, surgery, and hospital reconstruction works. Several fungal HAI are caused byCandidaspp., usually from an endogenous source; however, cross-transmission via the hands of healthcare workers or contaminated devices can occur. Although other medically important fungi, such asBlastomyces dermatitidis,Paracoccidioides brasiliensis, andHistoplasma capsulatum, have never been considered nosocomial pathogens, there are some factors that point out the pros and cons for this possibility. Among these fungi,H. capsulatuminfection has been linked to different medical devices and surgery implants. The filamentous form ofH. capsulatummay be present in hospital settings, as this fungus adapts to different types of climates and has great dispersion ability. Although conventional pathogen identification techniques have never identifiedH. capsulatumin the hospital environment, molecular biology procedures could be useful in this setting. More research onH. capsulatumas a HAI etiologic agent is needed, since it causes a severe and often fatal disease in immunocompromised patients.

scholarly journals Vapor H2O2 sterilization as a decontamination method for the reuse of N95 respirators in the COVID-19 emergency

2020 ◽  
Author(s):  
Ebru Oral ◽  
Keith K. Wannomae ◽  
Rachel Connolly ◽  
Joseph Gardecki ◽  
Hui Min Leung ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Staphylococcus Aureus ◽  
Medical Devices ◽  
Healthcare Workers ◽  
Hospital Environment ◽  
Bacterial Spores ◽  
Filter Efficiency ◽  
Plasma Generation ◽  
Log Reduction ◽  
N95 Respirators

There are a variety of methods routinely used in the sterilization of medical devices using hydrogen peroxide (H2O2) including vaporization, plasma generation and ionization. Many of these systems are used for sterilization and are validated for bioburden reduction using bacterial spores.Here, we explored the benefits of using vaporized H2O2 (VHP) treatment of N95 respirators for emergency decontamination and reuse to alleviate PPE shortages for healthcare workers in the COVID-19 emergency. The factors that are considered for the effective reuse of these respirators are the fit, the filter efficiency and the decontamination/disinfection level for SARS-CoV-2, which is the causative virus for COVID-19 and other organisms of concern in the hospital environment such as methicillin-resistant Staphylococcus aureus or Clostridium difficile. WE showed that the method did not affect fit or filter efficiency at least for one cycle and resulted in a >6 log reduction in bacterial spores and >3.8 log reduction in the infectious SARS-CoV2 load on N95 respirators.

Protocol of acceptance, execution and management of positive Covid-19 patient in Interventional Radiology at the AORN Sant’Anna and San Sebastiano of Caserta

2020 ◽  
Author(s):  
Moggio Giovanni ◽  
De Siero Michele ◽  
Ariosto Salvatore ◽  
Ferrara Gabriella ◽  
Boccagna Francesco
Keyword(s):  
Infectious Disease ◽  
Interventional Radiology ◽  
Medical Devices ◽  
Disease Risk ◽  
Hospital Environment ◽  
Care Pathways ◽  
Healthcare Facilities ◽  
Specific Protocol ◽  
Specialty Hospital ◽  
Therapeutic Procedures

The Covid-19 emergency required healthcare facilities to redesign the care pathways in order to avoid the spread of the pandemic. Interventional Radiology which carries out an essential activity in a high specialty hospital environment is exposed at the forefront in all those minimally invasive diagnostic-therapeutic procedures in election and urgency. It was therefore necessary to apply, on the basis of the National, Regional and Company directives, a specific protocol to the patients belonging to the Hospital. A series of procedures have therefore been applied, ranging from acceptance, preparation, pre and post-treatment interventional to reduce the infectious disease risk. However, this protocol is burdened by higher costs due to the increase in PPE to be used and the multiple disposable covers to be placed on screens, medical devices, worktops and angiography equipment. Furthermore, considering the overall times of a procedure, therefore also including the sanitization times of the facilities and the room, there is an evident increase in the room engagement times and the technical difficulties, obviously all this is in favor of the absence of infection of the operators.

scholarly journals Detection of catheter related blood stream infections in an ICU of a tertiary care center in Northern India

2021 ◽  
Vol 8 (2) ◽  
pp. 102-107
Author(s):  
Anjum Farhana ◽  
Humaira Basher ◽  
Seema Alim ◽  
Shoiab Khan
Keyword(s):  
Medical Devices ◽  
Tertiary Care ◽  
Hospital Environment ◽  
Diffusion Method ◽  
Public Health Issue ◽  
Contributory Factor ◽  
Gram Negative Bacteria ◽  
Gram Positive ◽  
Gram Negative ◽  
Microtitre Plate Assay

Indwelling medical devices are frequently used in all health setting with critical care units of hospitals for treatment and intervention in patient care.Microorganisms attach to surfaces resulting in the formation of a biofilm which pose a serious public health issue because of its increased resistance to antimicrobial agents and the potential to cause infections.To determine the proportion of bacterial Biofilms in patients with central venous line and to find out the organisms most commonly associated with it.The study was carried out from January 2019 to September 2020. Positive cultures were obtained from 58 of these 102 samples. The isolates were then tested for in vitro production of biofilm using a microtitre plate assay. All the isolates were subjected to antimicrobial susceptibility tests on Muller-Hinton agar by Kirby Bauer disc diffusion method based on CLSI guidelines. Demographic characteristics of the study subjects showed that among 102 catheterized patients isolated with males 58.82% and 41.1% females. Out of 58 isolates, 62.06% were gram negative bacteria (GNB) and 37.93% were gram positive. was most common isolate 27.58% followed by 20.68%, 15.5%, respectively. The total number of positive slime producers, in this study, was 23(39.6%). The highest number of strong slime producer strains was observed in case of (2 out of 5) (4 out of 12) and 3 out of 16)Antibiotic susceptibility patterns showed increased resistance towards penicillin and beta -lactum group of antibiotics, increased sensitivity to linezolid and vancomycin among gram positive organisms. Among gram negative bacteria increased resistance was seen for cephalosporins and aminigylycosides and least resistance for colistin.Colonization of indwelling medical devices with consequent biofilm production is a likely contributory factor to infections. The microorganisms survive in the hospital environment despite unfavourable conditions such as desiccation, nutrient starvation, and antimicrobial treatment. Resistance to antibiotics ladder is increasing and it’s necessary to take actions to reduce its hindrance in the future. Advanced studies in biofilm will help to prevent the more virulent factors which protect the bacteria from host immunity and to get rid of critical complications in therapy.

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