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1.
J Med Internet Res ; 22(9): e20896, 2020 09 15.
Artigo em Inglês | MEDLINE | ID: mdl-32903196

RESUMO

We explore the opportunities and challenges surrounding the use of disinfection robots to reduce the risk of SARS-CoV-2 transmission in health care and educational settings. Although there is some potential for deploying robots to help with manual cleaning, the evidence base is mixed, and we highlight that there needs to be work to establish and enhance the effectiveness of these robots in inactivating the virus.


Assuntos
Betacoronavirus , Infecções por Coronavirus/prevenção & controle , Desinfecção , Controle de Infecções , Pandemias/prevenção & controle , Pneumonia Viral/prevenção & controle , Robótica/métodos , Infecções por Coronavirus/transmissão , Hospitais , Humanos , Pneumonia Viral/transmissão , Instituições Acadêmicas
2.
Middle East Afr J Ophthalmol ; 27(2): 73-78, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-32874038

RESUMO

The novel coronavirus disease COVID-19 caused by Severe Acute Respiratory Syndrome Coronavirus-2 (SARS-CoV-2) has resulted in a substantial change in eye care and clinical practice. There has been conflicting information and weak evidence on the virus's transmission through tears. Yet, virus detection on cornea and conjunctiva surface as a gateway for infection is not well-studied. Moreover, there have been no reported cases of SARS-CoV-2 transmission through tonometry to date. Thus, this uncertainty has urged this review on evidence-based guidelines and recommendations on tonometer use in the COVID-19 era. The aim of this article is to provide ophthalmologists with recommendations for tonometry practice based on current evidence and best practice guidelines.


Assuntos
Infecções por Coronavirus/transmissão , Glaucoma/diagnóstico , Transmissão de Doença Infecciosa do Paciente para o Profissional/prevenção & controle , Pneumonia Viral/transmissão , Tonometria Ocular/métodos , Betacoronavirus , Túnica Conjuntiva/virologia , Córnea/virologia , Infecções por Coronavirus/prevenção & controle , Infecção Hospitalar/prevenção & controle , Desinfecção , Reutilização de Equipamento , Humanos , Oftalmologia , Pandemias/prevenção & controle , Equipamento de Proteção Individual , Pneumonia Viral/prevenção & controle , Guias de Prática Clínica como Assunto , Lágrimas/virologia
3.
J Bras Nefrol ; 42(2 suppl 1): 18-21, 2020 Aug 26.
Artigo em Inglês, Português | MEDLINE | ID: mdl-32877494

RESUMO

Considering the new coronavirus epidemic (Covid-19), the Brazilian Society of Nephrology, represented by the Peritoneal Steering Committee, in agreement with the and the Dialysis Department, developed a series of recommendations for good clinical practices for peritoneal dialysis (PD) clinics, to be considered during the period of the Covid-19 epidemic. We aim to minimize the disease spread, protecting patients and staff, and ensuring the quality of the treatment provided and adequate follow-up for PD patients. The recommendations suggested at this moment must be adapted to each clinic's reality and the conditions of the structural and human resources, dependent on the adequate financial provision of the public health system for its full implementation.


Assuntos
Betacoronavirus , Infecções por Coronavirus/prevenção & controle , Falência Renal Crônica/terapia , Pandemias/prevenção & controle , Diálise Peritoneal/normas , Pneumonia Viral/prevenção & controle , Brasil , Infecções por Coronavirus/diagnóstico , Infecções por Coronavirus/epidemiologia , Desinfecção/métodos , Desinfecção/normas , Humanos , Falência Renal Crônica/complicações , Máscaras , Nefrologia/normas , Doenças Profissionais/prevenção & controle , Equipe de Assistência ao Paciente , Educação de Pacientes como Assunto , Isolamento de Pacientes/métodos , Isolamento de Pacientes/normas , Diálise Peritoneal/instrumentação , Diálise Peritoneal/métodos , Equipamento de Proteção Individual , Pneumonia Viral/diagnóstico , Pneumonia Viral/epidemiologia , Sociedades Médicas , Telemedicina/legislação & jurisprudência , Telemedicina/métodos , Telemedicina/normas , Unidade Hospitalar de Urologia/organização & administração , Unidade Hospitalar de Urologia/normas
4.
J Nanobiotechnology ; 18(1): 125, 2020 Sep 05.
Artigo em Inglês | MEDLINE | ID: mdl-32891146

RESUMO

Incidents of viral outbreaks have increased at an alarming rate over the past decades. The most recent human coronavirus known as COVID-19 (SARS-CoV-2) has already spread around the world and shown R0 values from 2.2 to 2.68. However, the ratio between mortality and number of infections seems to be lower in this case in comparison to other human coronaviruses (such as severe acute respiratory syndrome coronavirus (SARS-CoV) and Middle East respiratory syndrome coronavirus (MERS-CoV)). These outbreaks have tested the limits of healthcare systems and have posed serious questions about management using conventional therapies and diagnostic tools. In this regard, the use of nanotechnology offers new opportunities for the development of novel strategies in terms of prevention, diagnosis and treatment of COVID-19 and other viral infections. In this review, we discuss the use of nanotechnology for COVID-19 virus management by the development of nano-based materials, such as disinfectants, personal protective equipment, diagnostic systems and nanocarrier systems, for treatments and vaccine development, as well as the challenges and drawbacks that need addressing.


Assuntos
Betacoronavirus , Infecções por Coronavirus , Nanotecnologia/métodos , Pandemias , Pneumonia Viral , Antivirais/administração & dosagem , Betacoronavirus/isolamento & purificação , Técnicas de Laboratório Clínico/métodos , Infecções por Coronavirus/diagnóstico , Infecções por Coronavirus/epidemiologia , Infecções por Coronavirus/prevenção & controle , Infecções por Coronavirus/terapia , Desinfecção/métodos , Portadores de Fármacos , Sistemas de Liberação de Medicamentos , Humanos , Nanoestruturas/administração & dosagem , Equipamento de Proteção Individual , Pneumonia Viral/diagnóstico , Pneumonia Viral/epidemiologia , Pneumonia Viral/terapia , Vacinas Virais/administração & dosagem
5.
Indian J Med Microbiol ; 38(2): 139-143, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-32883925

RESUMO

COVID-19 as a pandemic has spanned across all continents. With the increasing numbers in cases worldwide, even the countries with the best of healthcare facilities are reeling under the burden of the disease. Therefore, in countries with limited access to resources and poor healthcare infrastructure, the low and middle-income countries (LMICs), limiting spread becomes even more challenging. Low- and middle-income countries (LMICs) are severely hit by any outbreak and pandemics and face the lack of infrastructure and problem of overcrowding. Health facilities are compromised and almost exhausted at the time of emergency. There is disruption of normal supply chain, and consumables are not in sufficient quantity. In the current situation, rationalized use of available supplies is important. This paper presents the perspective on the basis of current literature on gaps in various infection prevention and control (IPC) strategies that are being followed currently in LMICs and suggestions for bridging these gaps.


Assuntos
Betacoronavirus/patogenicidade , Controle de Doenças Transmissíveis/organização & administração , Infecções por Coronavirus/epidemiologia , Higiene das Mãos/organização & administração , Pandemias , Pneumonia Viral/epidemiologia , Controle de Doenças Transmissíveis/métodos , Infecções Comunitárias Adquiridas , Infecções por Coronavirus/diagnóstico , Infecções por Coronavirus/prevenção & controle , Países em Desenvolvimento , Desinfecção/métodos , Instalações de Saúde/provisão & distribução , Humanos , Pandemias/prevenção & controle , Equipamento de Proteção Individual/provisão & distribução , Pneumonia Viral/diagnóstico , Pneumonia Viral/prevenção & controle , Guias de Prática Clínica como Assunto
6.
J Bras Nefrol ; 42(2 suppl 1): 15-17, 2020 Aug 26.
Artigo em Inglês, Português | MEDLINE | ID: mdl-32877493

RESUMO

Dialysis units are environments potentially prone to the spread of Covid-19. Patients cannot suspend treatment, and they often have comorbidities, which assigns them a higher risk and worse prognosis. The Brazilian Society of Nephrology prepared this document of good practices, whose technical recommendations deal with general measures that can be implemented to reduce the risk of transmission and prevent the spread of the disease in the unit.


Assuntos
Betacoronavirus , Infecções por Coronavirus/prevenção & controle , Pandemias/prevenção & controle , Pneumonia Viral/prevenção & controle , Diálise Renal/normas , Unidade Hospitalar de Urologia/normas , Brasil , Infecções por Coronavirus/diagnóstico , Infecções por Coronavirus/epidemiologia , Infecções por Coronavirus/transmissão , Desinfecção/métodos , Desinfecção/normas , Humanos , Máscaras , Nefrologia/normas , Isolamento de Pacientes/métodos , Isolamento de Pacientes/normas , Equipamento de Proteção Individual , Pneumonia Viral/diagnóstico , Pneumonia Viral/epidemiologia , Pneumonia Viral/transmissão , Insuficiência Renal Crônica , Sociedades Médicas/normas , Avaliação de Sintomas
7.
S Afr Med J ; 110(9): 835-836, 2020 08 12.
Artigo em Inglês | MEDLINE | ID: mdl-32880262

RESUMO

The stated objective of the COVID-19 lockdown was to allow time to prepare healthcare facilities. Preparation must include administrative and environmental measures, which when combined with personal protective equipment, minimise the risk of the spread of infection to patients and healthcare workers (HCWs) in facilities, allowing HCWs to safely provide essential services during the pandemic and limit the indirect effects of COVID-19 caused by healthcare disruption. We present our model for facility preparation based on colour-coded zones, social distancing, hand hygiene, rapid triage and separate management of symptomatic patients, and attention to infection transmission prevention between HCWs in communal staff areas. This model specifically addresses the challenges in preparing a facility for COVID-19 in a low-resource setting and in rural areas. In addition, we include links to resources to allow workers in low-resource settings to prepare their facilities adequately.


Assuntos
Infecções por Coronavirus/epidemiologia , Assistência à Saúde/organização & administração , Instalações de Saúde , Pessoal de Saúde , Pneumonia Viral/epidemiologia , Instituições de Assistência Ambulatorial , Betacoronavirus , Fortalecimento Institucional , Infecções por Coronavirus/prevenção & controle , Infecções por Coronavirus/transmissão , Desinfecção , Planejamento Ambiental , Desinfecção das Mãos , Hospitais , Humanos , Controle de Infecções , Unidades Móveis de Saúde , Pandemias/prevenção & controle , Equipamento de Proteção Individual/provisão & distribução , Pneumonia Viral/prevenção & controle , Pneumonia Viral/transmissão , África do Sul/epidemiologia , Ventiladores Mecânicos/provisão & distribução
8.
S Afr Med J ; 110(8): 751-752, 2020 06 11.
Artigo em Inglês | MEDLINE | ID: mdl-32880300

RESUMO

In endeavouring to mitigate the spread of the SARS-CoV-2 virus, a concerning practice of spraying individuals with disinfectant via so-called 'disinfection tunnels' has come to light. The Allergy Society of South Africa supports the World Health Organization in strongly condemning all human spraying, owing to lack of efficacy and potential dangers, especially to patients with coexisting allergic conditions.


Assuntos
Anti-Infecciosos Locais/efeitos adversos , Infecções por Coronavirus/prevenção & controle , Desinfetantes/efeitos adversos , Desinfecção/métodos , Pandemias/prevenção & controle , Pneumonia Viral/prevenção & controle , Alergia e Imunologia , Anti-Infecciosos Locais/administração & dosagem , Betacoronavirus , Desinfetantes/administração & dosagem , Humanos , África do Sul , Organização Mundial da Saúde
9.
Neuroradiol J ; 33(5): 353-367, 2020 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-32894991

RESUMO

The ongoing COVID-19 pandemic has forced every radiology set-up to evolve and formulate guidelines for day-to-day functioning. The sub-speciality of neuroradiology, both diagnostic and neuro-intervention, forms a very important part of any radiology or 'neuro-care' set-up. The present document is a consensus statement of the Indian Society of Neuroradiology, prepared after reviewing the available data and working experience. It scientifically tries to answer many questions faced by neuroradiologists everyday in practice. It encompasses simple things such as which patients need to be imaged, what precautions are essential, the work-flows, cleaning of radiology equipment, how to carry out neuro-interventions in COVID-suspect patients, and what procedures/tests to avoid, or their alternatives, to minimise the spread of COVID infection both to the patients and health care personnel. As radiology set-ups can be large, every sub-speciality may have certain precautions which will not be covered in general guidelines, and this document tries to answer those for neuroradiologists. Carefully evolved Standards of Operating Procedure (SOPs) and guidelines are the need of the hour to guide in providing uninterrupted and adequate services to the needy without compromising the safety of the specialised work force and facilities involved.


Assuntos
Infecções por Coronavirus/prevenção & controle , Controle de Infecções/métodos , Neuroimagem/métodos , Pandemias/prevenção & controle , Pneumonia Viral/prevenção & controle , Radiologia Intervencionista/métodos , Pessoal Técnico de Saúde , Betacoronavirus , Desinfecção , Emergências , Fumigação , Humanos , Índia , Equipamento de Proteção Individual , Admissão e Escalonamento de Pessoal , Radiologia/métodos , Sociedades Médicas , Ventilação
11.
Artigo em Inglês | MEDLINE | ID: mdl-32784414

RESUMO

SARS-CoV-2, and several other microorganisms, may be present in nasopharyngeal and salivary secretions in patients treated in dental practices, so an appropriate clinical behavior is required in order to avoid the dangerous spread of infections. COVID-19 could also be spread when patients touches a contaminated surface with infected droplets and then touch their nose, mouth, or eyes. It is time to consider a dental practice quite similar to a hospital surgery room, where particular attention should be addressed to problems related to the spreading of infections due to air and surface contamination. The effectiveness of conventional cleaning and disinfection procedures may be limited by several factors; first of all, human operator dependence seems to be the weak aspect of all procedures. The improvement of these conventional methods requires the modification of human behavior, which is difficult to achieve and sustain. As alternative sterilization methods, there are some that do not depend on the operator, because they are based on devices that perform the entire procedure on their own, with minimal human intervention. In conclusion, continued efforts to improve the traditional manual disinfection of surfaces are needed, so dentists should consider combining the use of proper disinfectants and no-touch decontamination technologies to improve sterilization procedures.


Assuntos
Infecções por Coronavirus/epidemiologia , Consultórios Odontológicos/métodos , Pneumonia Viral/epidemiologia , Esterilização/métodos , Betacoronavirus , Consultórios Odontológicos/normas , Desinfecção/métodos , Desinfecção/normas , Fidelidade a Diretrizes , Humanos , Pandemias , Guias de Prática Clínica como Assunto , Esterilização/normas
12.
Biochem Biophys Res Commun ; 530(1): 1-3, 2020 09 10.
Artigo em Inglês | MEDLINE | ID: mdl-32828268

RESUMO

Alcohol-based disinfectant shortage is a serious concern in the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) pandemic. Acidic electrolyzed water (EW) with a high concentration of free available chlorine (FAC) shows strong antimicrobial activity against bacteria, fungi, and viruses. Here, we assessed the SARS-CoV-2-inactivating efficacy of acidic EW for use as an alternative disinfectant. The quick virucidal effect of acidic EW depended on the concentrations of contained-FAC. The effect completely disappeared in acidic EW in which FAC was lost owing to long-time storage after generation. In addition, the virucidal activity increased proportionately with the volume of acidic EW mixed with the virus solution when the FAC concentration in EW was same. These findings suggest that the virucidal activity of acidic EW against SARS-CoV-2 depends on the amount of FAC contacting the virus.


Assuntos
Betacoronavirus/efeitos dos fármacos , Cloro/farmacologia , Desinfetantes/farmacologia , Desinfecção/métodos , Inativação de Vírus/efeitos dos fármacos , Ácidos/química , Ácidos/farmacologia , Antivirais/química , Antivirais/farmacologia , Betacoronavirus/fisiologia , Cloro/química , Infecções por Coronavirus/prevenção & controle , Infecções por Coronavirus/virologia , Desinfetantes/química , Eletrólise/métodos , Humanos , Pandemias/prevenção & controle , Pneumonia Viral/prevenção & controle , Pneumonia Viral/virologia , Água/química , Água/farmacologia
13.
ESMO Open ; 5(4)2020 08.
Artigo em Inglês | MEDLINE | ID: mdl-32847836

RESUMO

BACKGROUND: COVID-19 appeared in late 2019, causing a pandemic spread. This led to a reorganisation of oncology care in order to reduce the risk of spreading infection between patients and healthcare staff. Here we analysed measures taken in major oncological units in Europe and the USA. METHODS: A 46-item survey was sent by email to representatives of 30 oncological centres in 12 of the most affected countries. The survey inquired about preventive measures established to reduce virus spread, patient education and processes employed for risk reduction in each oncological unit. RESULTS: Investigators from 21 centres in 10 countries answered the survey between 10 April and 6 May 2020. A triage for patients with cancer before hospital or clinic visits was conducted by 90.5% of centres before consultations, 95.2% before day care admissions and in 100% of the cases before overnight hospitalisation by means of phone calls, interactive online platforms, swab test and/or chest CT scan. Permission for caregivers to attend clinic visits was limited in many centres, with some exceptions (ie, for non-autonomous patients, in the case of a new diagnosis, when bad news was expected and for terminally ill patients). With a variable delay period, the use of personal protective equipment was unanimously mandatory, and in many centres, only targeted clinical and instrumental examinations were performed. Telemedicine was implemented in 76.2% of the centres. Separated pathways for COVID-19-positive and COVID-19-negative patients were organised, with separate inpatient units and day care areas. Self-isolation was required for COVID-19-positive or symptomatic staff, while return to work policies required a negative swab test in 76.2% of the centres. CONCLUSION: Many pragmatic measures have been quickly implemented to deal with the health emergency linked to COVID-19, although the relative efficacy of each intervention should be further analysed in large observational studies.


Assuntos
Institutos de Câncer/organização & administração , Infecções por Coronavirus/prevenção & controle , Neoplasias/terapia , Pandemias/prevenção & controle , Pneumonia Viral/prevenção & controle , Betacoronavirus , Institutos de Câncer/estatística & dados numéricos , Infecções por Coronavirus/diagnóstico , Infecções por Coronavirus/epidemiologia , Assistência à Saúde , Desinfecção , Europa (Continente)/epidemiologia , Pesquisas sobre Serviços de Saúde , Humanos , Oncologia/estatística & dados numéricos , Equipamento de Proteção Individual , Pneumonia Viral/diagnóstico , Pneumonia Viral/epidemiologia , Triagem , Estados Unidos/epidemiologia , Visitas a Pacientes
14.
Curr Opin Gastroenterol ; 36(5): 366-369, 2020 09.
Artigo em Inglês | MEDLINE | ID: mdl-32739998

RESUMO

PURPOSE OF REVIEW: The elevator mechanism of the duodenoscope was the focus of endoscopically transmitted infections prior to the COVID-19 pandemic. Since that time, the 'suspicious suspects' in the endoscopy unit have grown in number in the eyes of both patients and endoscopists. RECENT FINDINGS: This review summarizes the existing guidelines related to infection control in the endoscopy unit and emerging technologies to address gaps, identifies recommendations proposed during the COVID-19 pandemic, and reminds the reader that infection prevention has not changed since the emergence of COVID-19, only the importance of infection prevention has increased in visibility. SUMMARY: Infection prevention has been and will always be necessary in the gastrointestinal endoscopy unit. Although outbreaks of antibiotic-resistant organisms and infectious diseases like COVID-19 raise the profile of infection control, there have been no major changes to infection control practice recommendations because of the global pandemic. The history of lapses in infection control, persistent contamination of reprocessed endoscopes, and failure of many endoscopy units to identify certain endoscopic procedures as aerosol-generating procedures prior to the pandemic emphasize the need for better knowledge and implementation of infection control practices within endoscopy units.


Assuntos
Infecções por Coronavirus/prevenção & controle , Infecção Hospitalar/prevenção & controle , Duodenoscópios/virologia , Endoscopia Gastrointestinal/efeitos adversos , Contaminação de Equipamentos/prevenção & controle , Controle de Infecções/normas , Pandemias/prevenção & controle , Pneumonia Viral/prevenção & controle , Betacoronavirus/isolamento & purificação , Infecções por Coronavirus/virologia , Desinfecção/normas , Humanos , Pneumonia Viral/virologia , Guias de Prática Clínica como Assunto
15.
Sci Total Environ ; 737: 139606, 2020 Oct 01.
Artigo em Inglês | MEDLINE | ID: mdl-32783818

RESUMO

Disinfection, which aims to eliminate pathogenic microorganisms, is an essential step of water treatment. Hydrodynamic cavitation (HC) has emerged as a promising technology for large-scale disinfection without introducing new chemicals. HC, which can effectively induce sonochemistry by mechanical means, creates extraordinary conditions of pressures of ~1000 bar, local hotspots with ~5000 K, and high oxidation (hydroxyl radicals) in room environment. These conditions can produce highly destructive effects on microorganisms in water. In addition, the enhancements of chemical reactions and mass transfers by HC produce the synergism between HC and disinfectants or other physical treatment methods. HC is generated by hydrodynamic cavitation reactors (HCRs), therefore, their performance basically determines the effectiveness, economical efficiency, and applicability of HC disinfection. Therefore, developing high-performance HCRs and revealing the corresponding disinfection mechanisms are the most crucial issues today. In this review, we summarize the fundamental principles of HC and HCRs and recent development in HC disinfection. The energy release from cavitation phenomenon and corresponding mechanisms are elaborated. The performance (effectiveness, treatment ratio, and cost) of various HCRs, effects of treatment conditions on performance, and applicability of HC disinfection are evaluated and discussed. Finally, recommendations are provided for the future progress based on the analysis of previous studies.


Assuntos
Desinfetantes , Purificação da Água , Desinfecção , Hidrodinâmica , Microbiologia da Água
16.
Sci Total Environ ; 737: 140044, 2020 Oct 01.
Artigo em Inglês | MEDLINE | ID: mdl-32783828

RESUMO

Portable water purification devices are needed to provide safe drinking water in rural communities, developing communities with low quality centralized water distribution, and military or recreational applications. Filtration, ultraviolet light, or chemical additives provide a spectrum of alternatives to remove pathogens from water. For the first time, we design, fabricate and demonstrate the performance of a small portable photoelectric point-of-use device, and document its performance on pathogen inactivation. The device utilizes a commercial teacup from which TiO2 nanotube photoanodes were produced in-situ and, with a small rechargeable battery powered 365 nm light emitting diode, was able to achieve 5-log inactivation of Escherichia coli in 10 s and 2.6-log of Legionella in 60 s of treatment in model water samples. Treatment of natural water achieved a 1-log bacteria inactivation after 30 s due to matrix effects. The electro-photocatalytic disinfection reactor in a kup (e-DRINK) can provide a feasible and affordable solution to ensure access to clean water. More broadly, this work demonstrates the potential for illumination to improve the efficiency of electrocatalytic surfaces.


Assuntos
Proteínas de Escherichia coli , Purificação da Água , Desinfecção , Escherichia coli , Raios Ultravioleta , Água , Microbiologia da Água
17.
Sci Total Environ ; 737: 140296, 2020 Oct 01.
Artigo em Inglês | MEDLINE | ID: mdl-32783866

RESUMO

Disinfection byproducts (DBPs) in drinking water is an issue in many countries. Many DBPs are possible or probable human carcinogens while few DBPs pose cyto- and genotoxic effects to the mammalian cells. The populations are likely to consume DBPs with drinking water throughout their lifetimes. A number of DBPs are regulated in many countries to protect humans. In this study, human exposure, risk and disability-adjusted life years (DALY) were predicted from DBPs in multiple water supply systems, including groundwater (GW), desalinated water (DW) and blend water (BW). The averages of lifetime excess cancer risks from GW, DW and BW were 4.15 × 10-6, 1.75 × 10-5 and 2.59 × 10-5 respectively. The populations in age groups of 0 - <2, 2-16 and >16 years contributed 25.4-25.7%, 28.6-29.6% and 45.0-45.7% to the total risks respectively. The DALY from GW, DW and BW were estimated to be 5.8, 27.0 and 39.9 years, respectively while the corresponding financial burdens were US$ 0.63, 2.93 and 4.34 million respectively. The findings are likely to assist in selecting the supply water sources to better control human exposure and risk from DBPs.


Assuntos
Desinfetantes/análise , Água Potável/análise , Poluentes Químicos da Água/análise , Purificação da Água , Animais , Desinfecção , Halogenação , Humanos , Anos de Vida Ajustados por Qualidade de Vida , Arábia Saudita , Abastecimento de Água
18.
Indian J Dent Res ; 31(3): 376-381, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-32769270

RESUMO

Background: Although gutta-percha cones are usually supplied in aseptic packages, once opened and used, they may be contaminated. Chair side disinfection of these cones is important and critical for success of endodontic therapy. Gutta-percha being heat labile, chemical disinfection is the only viable alternative for the sterilization of these cones. Aim: The aim of the study was to evaluate an effective method of disinfection of gutta-percha cones using various herbal and chemical solutions after intentional contamination with Staphylococcus aureus and Enterococcus faecalis. Materials and Methods: 150 gutta-percha cones were selected for the study. Based on the contaminants used, 140 gutta-percha cones were divided into 2 groups: Group A and Group B with 70 cones in each group and the remaining 10 cones (Group VIII) which were uncontaminated served as negative control. The cones from Group A were contaminated with Staphylococcus aureus (S. aureus) and Group B were contaminated with Enterococcus faecalis (E. faecalis). The contaminated cones from both groups were subdivided into 7 groups with 10 cones in each group. Group I cones were disinfected with Q Mix 2 in 1, Group II with 3% sodium hypochlorite, Group III with chitosan, Group IV with aloe vera juice, Group V with amla juice, and Group VI with pancha tulsi. Group VII consisted of gutta-percha cones without any disinfection in both Group A and Group B which served as positive control. The disinfection time was 1 min. All the cones were then incubated in thioglycollate media for 7 days. The thioglycollate media was subcultured and colony forming units were counted. The data were analyzed by one-way ANOVA and post-hoc Tukey tests using SPSS 17.0 software. Results: There was a statistically significant difference present in the mean colony forming units among all the groups (P < 0.05). Conclusion: Pancha Tulsi and Q Mix 2 in 1 possessed superior antibacterial activity when compared to other experimental solutions.


Assuntos
Guta-Percha , Materiais Restauradores do Canal Radicular , Desinfecção , Hipoclorito de Sódio , Staphylococcus aureus
20.
Sheng Wu Yi Xue Gong Cheng Xue Za Zhi ; 37(4): 566-571, 2020 Aug 25.
Artigo em Chinês | MEDLINE | ID: mdl-32840071

RESUMO

The coronavirus disease 2019 (COVID-19) epidemic has had a serious impact in the world. In the absence of vaccines and therapeutic drugs, disinfection has become an important technical means to block the spread of the virus. By analyzing the characteristics of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), we studied a series of disinfection technologies for COVID-19. During the outbreak of COVID-19, Jinan Second Center for Disease Control and Prevention disinfected the houses of the cases to be investigated in a community. The effectiveness of the disinfection technology was verified through the process of disinfection preparation, sampling before disinfection, field disinfection, sampling after disinfection and evaluation of disinfection effect. Compared the data before and after disinfection, the killing rate of the total bacterial colonies in the air and on the surface of the object was more than or equal to 90%, and no SARS-CoV-2 was detected after disinfection. The results show that the disinfection effect of the disinfection technology meets the standard. Finally, through the analysis of the wrong way of disinfection and the harm of over disinfection, the importance of scientific disinfection and precise disinfection are emphasized, and the research has a good guiding value for prevention and control of the epidemic.


Assuntos
Betacoronavirus , Infecções por Coronavirus , Pandemias , Pneumonia Viral , Desinfecção , Humanos
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