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1.
Appl Environ Microbiol ; 90(4): e0211923, 2024 Apr 17.
Artigo em Inglês | MEDLINE | ID: mdl-38497644

RESUMO

Eye infections from bacterial contamination of bulk-refillable liquid soap dispensers and artificial tear eye drops continue to occur, resulting in adverse health outcomes that include impaired vision or eye enucleation. Pseudomonas aeruginosa (P. aeruginosa), a common cause of eye infections, can grow in eye drop containers and refillable soap dispensers to high numbers. To assess the risk of eye infection, a quantitative microbial risk assessment for P. aeruginosa was conducted to predict the probability of an eye infection for two potential exposure scenarios: (i) individuals using bacteria-contaminated eye drops and (ii) contact lens wearers washing their hands with bacteria-contaminated liquid soap prior to placing the lens. The median risk of an eye infection using contaminated eye drops and hand soap for both single and multiple exposure events (per day) ranged from 10-1 to 10-4, with contaminated eye drops having the greater risk. The concentration of P. aeruginosa was identified as the parameter contributing the greatest variance on eye infection risk; therefore, the prevalence and level of bacterial contamination of the product would have the greatest influence on health risk. Using eye drops in a single-use container or with preservatives can mitigate bacterial growth, and using non-refillable soap dispensers is recommended to reduce contamination of hand soap. Given the opportunistic nature of P. aeruginosa and its ability to thrive in unique environments, additional safeguards to mitigate bacterial growth and exposure are warranted.IMPORTANCEPseudomonas aeruginosa (P. aeruginosa) is a pathogen that can persist in a variety of unusual environments and continues to pose a significant risk for public health. This quantitative microbial risk assessment (QMRA) estimates the potential human health risks, specifically for eye infections, associated with exposure to P. aeruginosa in bacteria-contaminated artificial tear eye drops and hand soap. This study applies the risk assessment framework of QMRA to evaluate eye infection risks through both consumer products. The study examines the prevalence of this pathogen in eye drops and soap, as well as the critical need to implement measures that will mitigate bacterial exposure (e.g., single-use soap dispensers and eye drops with preservatives). Additionally, limitations and challenges are discussed, including the need to incorporate data regarding consumer practices, which may improve exposure assessments and health risk estimates.


Assuntos
Infecções Oculares , Infecções por Pseudomonas , Humanos , Pseudomonas aeruginosa , Sabões , Lubrificantes Oftálmicos , Bactérias , Infecções por Pseudomonas/epidemiologia , Infecções por Pseudomonas/prevenção & controle , Desinfecção das Mãos/métodos
2.
Antimicrob Resist Infect Control ; 13(1): 26, 2024 Feb 29.
Artigo em Inglês | MEDLINE | ID: mdl-38424571

RESUMO

Healthcare-associated infections (HAIs) and antimicrobial resistance (AMR) pose threats to global health. Effective hand hygiene is essential for preventing HAIs and the spread of AMR in healthcare. We aimed to highlight the recent progress and future directions in hand hygiene and alcohol-based handrub (ABHR) use in the healthcare setting. In September 2023, 42 experts in infection prevention and control (IPC) convened at the 3rd International Conference on Prevention and Infection Control (ICPIC) ABHR Taskforce in Geneva, Switzerland. The purpose of this meeting was to provide a synthesis of recent evidence and formulate a research agenda on four critical areas for the implementation of effective hand hygiene practices: (1) ABHR formulations and hand rubbing techniques, (2) low-resource settings and local production of ABHR, (3) hand hygiene monitoring and technological innovations, and (4) hand hygiene standards and guidelines.


Assuntos
Infecção Hospitalar , Higiene das Mãos , Humanos , Higiene das Mãos/métodos , Desinfecção das Mãos/métodos , Etanol , Controle de Infecções/métodos , Infecção Hospitalar/prevenção & controle , Atenção à Saúde
3.
Trans R Soc Trop Med Hyg ; 118(3): 178-189, 2024 Mar 04.
Artigo em Inglês | MEDLINE | ID: mdl-37994919

RESUMO

BACKGROUND: Hand hygiene (HH) is a proven low-cost means to curtail the problem of hospital-acquired infection (HAI). However, a low HH compliance rate of 17.1% was found among surgical health workers at Ahmadu Bello University Teaching Hospital (ABUTH) in Zaria, Nigeria. METHODS: This was an intervention study conducted utilizing mixed methods to investigate the effectiveness of the World Health Organization (WHO) multimodal strategy to improve the HH compliance rate of doctors at ABUTH Zaria. The study was conducted between June and August 2022 and included delivering a behavioural change HH workshop to doctors followed by data collection in the surgical wards that had received environmental modification through the provision of an alcohol-based hand rub (ABHR), HH posters and nurses for visual and/or verbal reminders. RESULTS: The cumulative HH compliance rate was 69% (n=1774) and was significantly different from the baseline HH compliance rate of 17.1% (confidence interval 45.5 to 57.7, p<0.001). Observed HH was highest in the ward with both visual and verbal reminders (78%) and lowest (59%) where neither visual nor verbal reminders were provided (n=444 per ward). All respondents reported motivation to perform HH with the presence of ABHR. CONCLUSIONS: The WHO multimodal strategy is good for enhancing HH among health workers in the context of low- and middle-income countries. More research is needed to understand how much of a reduction in HAI is directly associated with efficient HH by health workers.


Assuntos
Infecção Hospitalar , Higiene das Mãos , Humanos , Centros de Atenção Terciária , Controle de Infecções/métodos , Nigéria , Infecção Hospitalar/prevenção & controle , Pessoal de Saúde , Etanol , 2-Propanol , Fidelidade a Diretrizes , Desinfecção das Mãos/métodos
4.
Am J Infect Control ; 52(1): 21-28, 2024 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-37776899

RESUMO

BACKGROUND: Achieving high hand hygiene compliance among health care workers is a challenge, requiring effective interventions. This study investigated the impact of individualized feedback on hand hygiene compliance using an electronic monitoring system. METHODS: A quasi-experimental intervention design with pretest-post-test was conducted in an orthopedic surgical ward. Participants served as their own controls. A 3-month baseline was followed by a 3-month intervention period. Hand hygiene events were recorded through sensors on dispensers, name tags, and near patient beds. Health care workers received weekly email feedback reports comparing their compliance with colleagues. RESULTS: Nineteen health care workers (17 nurses, 2 doctors) were included. Hand hygiene compliance significantly improved by approximately 15% (P < .0001) across all rooms during the intervention. The most substantial improvement occurred in patient rooms (17%, P < .0001). Compliance in clean and contaminated rooms increased by 10% (P = .0068) and 5% (P = .0232). The average weekly email open rate for feedback reports was 46%. CONCLUSIONS: Individualized feedback via email led to significant improvements in hand hygiene compliance among health care workers. The self-directed approach proved effective, and continuous exposure to the intervention showed promising results.


Assuntos
Infecção Hospitalar , Higiene das Mãos , Humanos , Retroalimentação , Pessoal de Saúde , Hospitais , Poder Psicológico , Fidelidade a Diretrizes , Desinfecção das Mãos/métodos , Infecção Hospitalar/prevenção & controle
5.
J Hosp Infect ; 144: 137-143, 2024 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-38081455

RESUMO

INTRODUCTION: Good hand hygiene techniques (HHTs), like those of the World Health Organization (WHO), prevent microbial contamination of aseptic preparations. The objective of this study was to assess the efficacy of a game-based training (GBT) tool (the Handtastic Box) to improve the compliance of hospital pharmacy operators (HPOs) with handwashing guidelines. METHODS: A camera recorded handwashing by HPOs for 1 month before the training day, for 1 month after the training day (M1), and between month 1 and month 3 (M2&3). Movements were scored as fully executed, partially executed or not executed. Compliance rates of each HPO with HHTs were compared between observation periods. During 1-h training sessions, pairs of HPO trainees watched handwashing videos and noted which of five guideline steps was missing. They examined wooden hands with areas stained with fluorescein under ultraviolet light to find the hand showing the matching contamination. RESULTS: The mean compliance score for nine HPOs increased from 44.6% (before training, N=32 videos) to 86.7% (M1, N=40) to 82.5% (M2&3, N=45). Compliance with every step improved from before training to M1 and generally stabilized in M2&3, except for the fingertip washing step which dropped significantly in M2&3. DISCUSSION: To the authors' knowledge, this is the first study to assess the efficacy of a GBT tool to improve HPO compliance with the WHO HHTs. The tool improved handwashing scores significantly, and maintained them at the same level for 3 months after training. The separate results for each step highlight the need to train every movement. CONCLUSION: This GBT tool successfully improved compliance with the WHO HHTs for 3 months. This training could be used for other healthcare professionals.


Assuntos
Higiene das Mãos , Serviço de Farmácia Hospitalar , Humanos , Desinfecção das Mãos/métodos , Mãos , Fidelidade a Diretrizes
6.
J Health Popul Nutr ; 42(1): 146, 2023 Dec 21.
Artigo em Inglês | MEDLINE | ID: mdl-38129922

RESUMO

BACKGROUND: Cholera can result in the expulsion of important microbiota from the gut and result in death if left untreated. The disease transmits mainly via drinking water carrying Vibrio cholerae; and household contacts (HHC) of cholera patients are at elevated risk during the first week of infection. The gut microbiota profiles of HHC-children of cholera patients at Dhaka city slums were investigated before (day 0) and after (day 8) delivery of chlorinated water as part of the major study 'CHoBI7 trial (cholera-hospital-based intervention for 7 days)'. RESULT: Results of sequencing and analysis of bacterial community DNA revealed the predominance of two bacterial phyla: Bacteroidetes and Firmicutes at day 0 with a relative abundance of 62 ± 6 (mean ± SEM%) and 32 ± 7, respectively. The pattern reversed at day 8 with a decreased relative abundance of Bacteroidetes (39 ± 12; p = 0.034) and an increased abundance of Firmicutes (49 ± 12; p = 0.057). Of 65 bacterial families confirmed at day 0, six belonging to Proteobacteria including Vibrionaceae disappeared at day 8. Interestingly, the relative abundance of four Firmicutes families-Lachnospiraceae, Bifidobacteriaceae, Clostridiaceae, and Ruminococcaceae was increased in all five study children at day 8. CONCLUSION: The observed exclusion of pathogenic Proteobacteria and enhancement of beneficial Firmicutes in the gut of children delivered with chlorinated water as part of WASH intervention reflect a great promise of the CHoBI7 program in preventing cholera and improving child health.


Assuntos
Cólera , Microbioma Gastrointestinal , Purificação da Água , Humanos , Bangladesh , Cólera/prevenção & controle , Desinfecção das Mãos/métodos , Estudos Prospectivos , Sabões , Purificação da Água/métodos
7.
Rev Gaucha Enferm ; 44: e20220344, 2023.
Artigo em Inglês, Português | MEDLINE | ID: mdl-37909517

RESUMO

OBJECTIVE: To evaluate the effectiveness of the hand hygiene process after elementary school students participated in an educational activity using an automated digital technology called Tutor Robot. METHOD: Quasi-experimental study developed in 2019 with elementary school students (n=203). Hand hygiene was performed with a fluorescent solution before and after participating in an educational activity with a tutor robot. The images were recorded in a dark chamber and the data related to area of residence, grade, gender, hand position and laterality were analyzed by Anova and Holm-Sidak Post-Hoc (p≤0,05). RESULTS: All conditions studied improved the hand hygiene process after activity with the tutor robot. There was no association between grade, gender, and dominant hand and the performance in the hand hygiene process, however, students from urban areas performed better than those from rural areas. CONCLUSION: The activity with the tutor robot represented an important resource for conducting health education actions on hand hygiene and can also be tested in other settings and populations.


Assuntos
Higiene das Mãos , Robótica , Humanos , Estudantes , Educação em Saúde/métodos , Inquéritos e Questionários , Desinfecção das Mãos/métodos
8.
J Water Health ; 21(11): 1651-1662, 2023 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-38017596

RESUMO

Poor hand hygiene practice has been linked to an increase in the number of infections among children in urban slums. Hands are considered an intersection for bacterial transmission, but it is unclear whether the handwashing technique affects bacteria elimination. This study investigated the effect of handwashing on the concentration of Escherichia coli (E. coli) and factors related to its reduction among children in an urban slum in Bandung, Indonesia. We observed handwashing and conducted repeated hand swabs before and after handwashing among 137 participants. The mean E. coli concentration on the hands decreased after handwashing, with a higher reduction in E. coli count among students who used soap and had soap contact for more than 10 s during handwashing. Cleaning in-between fingers, using soap, soap contact for more than 10 s, and drying hands with a single-use towel were effective factors for reducing E. coli concentration after handwashing (p < 0.05). More than half of the swab samples (59%) tested positive for E. coli after handwashing, indicating that the children's handwashing technique was not effective in completely removing E. coli from the hands. Moreover, sustained and consistent handwashing practice as a daily behavior in children would maximize the effect.


Assuntos
Escherichia coli , Desinfecção das Mãos , Humanos , Criança , Desinfecção das Mãos/métodos , Áreas de Pobreza , Indonésia , Sabões/farmacologia
9.
Am J Infect Control ; 51(11S): A35-A43, 2023 11.
Artigo em Inglês | MEDLINE | ID: mdl-37890952

RESUMO

BACKGROUND: Multiple aspects of hand hygiene have changed in recent years. METHODS: A PubMed search was conducted to identify recent articles about hand hygiene. RESULTS: The COVID-19 pandemic caused temporary changes in hand hygiene compliance rates and shortages of alcohol-based hand sanitizers (ABHSs), and in marketing of some products that were ineffective or unsafe. Fortunately, ABHSs are effective against SARS-CoV-2 and other emerging pathogens including Candida auris and mpox. Proper placement, maintenance, and design of ABHS dispensers have gained additional attention. Current evidence suggests that if an adequate volume of ABHS has been applied to hands, personnel must rub their hands together for at least 15 seconds before hands feel dry (dry time), which is the primary driver of antimicrobial efficacy. Accordingly, practical methods of monitoring hand hygiene technique are needed. Direct observation of hand hygiene compliance remains a challenge in many healthcare facilities, generating increased interest in automated hand hygiene monitoring systems (AHHMSs). However, several barriers have hindered widespread adoption of AHHMSs. AHHMSs must be implemented as part of a multimodal improvement program to successfully improve hand hygiene performance rates. CONCLUSIONS: Remaining gaps in our understanding of hand hygiene warrant continued research into factors impacting hand hygiene practices.


Assuntos
Higiene das Mãos , Higienizadores de Mão , Humanos , Higiene das Mãos/métodos , Pandemias/prevenção & controle , Etanol , Higiene , Desinfecção das Mãos/métodos , Fidelidade a Diretrizes
10.
J Hosp Infect ; 141: 71-79, 2023 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-37660889

RESUMO

BACKGROUND: Availability of alcohol-based hand rub (ABHR) dispensers at positions adapted to the work flow of healthcare workers (HCWs) is decisive in order to carry out indication-based hand rubbing. Although requirements and guidelines regarding the positioning of ABHR dispensers are in place, scientific evidence is often lacking. METHODS: In order to analyse the impact of the location and number of ABHR dispensers on hand hygiene performance, additional dispensers were systematically placed in patient rooms in a surgical 38-bed ward at Marburg University Hospital, Germany to complement the existing dispenser locations. ABHR use was monitored continuously before and after complementation using the NosoEx hand hygiene monitoring system. The ward had 53 dispensers before the intervention and 82 dispensers after the intervention. RESULTS: The addition of dispensers increased ABHR consumption across the entire ward. Before the intervention, mean consumption was 20.6 mL/patient-day, whereas mean consumption after the intervention was 25.3 mL/patient-day. Depending on the combination of dispenser locations, consumption increased through targeted supplementation in patient rooms. The presence of two or three dispensers per patient room resulted in significantly greater ABHR consumption compared with one dispenser per patient room. The preferred location combinations were entrance-front bed-back bed and entrance-foot end. CONCLUSION: ABHR consumption can be increased significantly by optimizing the position and number of dispensers. The outstanding factors are visibility and integrability of dispenser use into the work flow; in particular, a dispenser should be positioned in the entrance area. Recommendations should be optimized with regard to the required number and location of dispensers in patient rooms.


Assuntos
Higiene das Mãos , Humanos , Desinfecção das Mãos/métodos , Etanol , Pessoal de Saúde , Hospitais Universitários , 2-Propanol , Fidelidade a Diretrizes
11.
Sci Rep ; 13(1): 11554, 2023 07 18.
Artigo em Inglês | MEDLINE | ID: mdl-37463924

RESUMO

Hand dryer in public washroom has been reported likely to be a reservoir of drug-resistant bacteria. When a hand dryer being used, the high-velocity air jet from the dryer outlet can carry aerosol particles to hand surfaces, the user, and indoor space. This in silico study considered the effect of different airflow speed of hand dryers on the dispersion of particles in different diameters with and without the user. The aim of this study was to apply the computational fluid dynamics (CFD) method based on the discrete phase model to investigate the trajectory of indoor particles from the hand dryer in public washroom. The CFD results showed that, when the user was using the hand dryer, 42.3% of the particles were distributed on the wall against the user, and 31.6% were distributed on the user's body, including their hands. When no one was standing in front of the hand dryer, 87.6% of the particles fell on the ground. The blocking of user's hand dispersed the particles to a wide range, particularly for the larger diameter particles which were scattered on the user's body or on the ground. In addition, the dispersion proportion of particles did not vary with the speed of airflow, but the area of particles distribution became larger as the speed increased. Our findings suggest that the contamination of the indoor environment caused by the hand dryer could not be ignored, incorporating filters into hand dryers is essential. Furthermore, our work offers valuable insights for optimizing the design of hand dryers.


Assuntos
Desinfecção das Mãos , Mãos , Desinfecção das Mãos/métodos , Mãos/microbiologia , Bactérias , Acidentes por Quedas
12.
J Hosp Infect ; 139: 113-120, 2023 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-37301230

RESUMO

OBJECTIVES: Hand hygiene has long been promoted as the most effective way to prevent the transmission of infection. However, due to low compliance and low quality of hand hygiene reported in previous studies, constant monitoring of hand hygiene compliance and quality among healthcare workers is crucial. This study investigated the feasibility of using a thermal camera with an RGB camera to detect hand coverage of alcohol-based formulation, thereby monitoring the quality of hand rubbing. METHODS: In total, 32 participants were recruited to participate in this study. Participants were required to perform four types of hand rubbing to achieve different coverage of the alcohol-based formulation. After each task, participants' hands were photographed under a thermal camera and an RGB camera, while an ultraviolet (UV) test was used to provide the ground truth of hand coverage of alcohol-based formulation. U-Net was used to segment areas exposed to alcohol-based formulation from thermal images, and system performance was evaluated by comparing differences in coverage between thermal images and UV images in terms of accuracy and Dice coefficient. RESULTS: This system found promising results in terms of accuracy (93.5%) and Dice coefficient (87.1%) when observations took place 10 s after hand rubbing. At 60 s after hand rubbing, accuracy and Dice coefficient were 92.4% and 85.7%. CONCLUSIONS: Thermal imaging has potential for accurate, constant and systematic monitoring of the quality of hand hygiene.


Assuntos
Infecção Hospitalar , Higiene das Mãos , Humanos , Desinfecção das Mãos/métodos , Etanol , Pessoal de Saúde , Diagnóstico por Imagem , Mãos , Fidelidade a Diretrizes , Infecção Hospitalar/prevenção & controle
13.
Am J Trop Med Hyg ; 109(1): 191-200, 2023 07 05.
Artigo em Inglês | MEDLINE | ID: mdl-37188343

RESUMO

Alcohol-based hand rub (ABHR) is an effective hand hygiene measure to mitigate and prevent infectious disease transmission in healthcare facilities (HCFs); however, availability and affordability in low- and middle-income countries are limited. We sought to establish centralized local production of ABHR using a district-wide approach to increase provider access at all public HCFs in Kabarole and Kasese Districts in Western Uganda. Partner organizations worked with district governments to adapt and implement the WHO protocol for local ABHR production at the district scale. These groups identified and upgraded sites for ABHR production and storage to ensure recommended security, ventilation, and air conditioning. District governments selected technicians for training on ABHR production. Raw materials were sourced within Uganda. Alcohol-based hand rub underwent internal quality control by the production officer and external quality control (EQC) by a trained district health inspector before distribution to HCFs. We assessed ABHR production and demand from March 2019 to December 2020. All ABHR batches (N = 316) met protocol standards (alcohol concentration: 75.0-85.0%) with a mean of 79.9% (range: 78.5-80.5%). Internal quality control measurements (mean alcohol concentration: 80.0%, range: 79.5-81.0%) matched EQC measurements (mean: 79.8%, range: 78.0-80.0%). Production units supplied ABHR to 127 HCFs in Kasese District (100%) and 31 HCFs in Kabarole District (56%); 94% of HCFs were small (dispensary or next higher level). This district-wide production met quality standards and supplied ABHR to many HCFs where facility-level production would be unfeasible. Low- and middle-income countries may consider district models to expand ABHR production and supply to smaller HCFs.


Assuntos
Desinfecção das Mãos , Higiene das Mãos , Humanos , Desinfecção das Mãos/métodos , Etanol , 2-Propanol , Atenção à Saúde , Organização Mundial da Saúde
14.
Microbiol Spectr ; 11(3): e0128823, 2023 06 15.
Artigo em Inglês | MEDLINE | ID: mdl-37199650

RESUMO

The ASTM E1174-21 Health Care Personnel Handwash method is prescribed by the U.S. Food and Drug Administration (FDA) to demonstrate the efficacy of antiseptic handwashing products. The standardized method allows for marker bacteria to be collected from the hands by using either a bag or a glove. Two recent studies utilizing the different collection methods testing the same product showed substantial differences in results. We sponsored two independent studies to compare the bag and glove collection methods following contamination with Serratia marcescens. Overall, there was no difference between collection methods for bacteria recovered (P = 0.603). The distribution of recovery for the bag method was slightly less variable than for the glove method. Statistical differences were observed within each lab based on the collection day. The day-to-day variability is critical to consider for future multiple-day studies. Additionally, hand size appears to impact recovery, especially for the glove method, with both small and medium hand sizes resulting in higher recovery than large and extralarge hand sizes (P = 0.015), whereas hand size did not impact recovery with the bag method (P = 0.315). While it appears that both the bag and glove methods can be used, our findings suggest that gloves may not be the best option for subjects with large to extra-large hands. Additional work looking at bacterial recovery following product treatment is warranted to understand the impact of large hands in the bag versus glove recovery method. IMPORTANCE Antiseptic hand wash products are evaluated using the standard ASTM E1174-21 to demonstrate their antibacterial efficacy. Often products are tested at multiple labs, and the need to understand variables that may play a role in the outcome of the study is important. This work allows us to evaluate the impact that the two collection methods, bags and gloves, have on bacteria recovery. If differences are observed, standardization to one method may be critical to ensure similar test results when planning studies at multiple labs.


Assuntos
Anti-Infecciosos Locais , Desinfecção das Mãos , Estados Unidos , Humanos , Desinfecção das Mãos/métodos , Serratia marcescens , Antibacterianos , Atenção à Saúde
15.
PLoS One ; 18(5): e0283741, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37256865

RESUMO

Handwashing with soap is a widely advocated public health measure, but seldom practiced, partly because it is often difficult (especially outside of rich Western country contexts) to make both soap and water readily available in relevant situations. This study used both Behaviour Centred Design and Human Centred Design to guide development of a novel hand cleansing technology appropriate for the context of post-toilet hand cleansing in resource-poor societies. Extensive prototyping and field testing resulted in the pilot production of 'tab' soap, a small but durable single-use, decomposable substrate embedded with soap. It can be produced in dispenser roll or tear-off formats. With this affordable solution, one may use soap without worrying about contamination pretty much anytime and anywhere. A small-scale field test showed that all poor households in rural and peri-urban areas in Tanzania included in the proof-of-concept study (N = 12 households) would use the product reliably over the medium term. Tab soap awaits full-scale production and marketing but could make hand cleansing a more popular practice around the world.


Assuntos
Comportamentos Relacionados com a Saúde , Sabões , Humanos , Mãos , Saúde Pública , Características da Família , Desinfecção das Mãos/métodos
16.
J Hosp Infect ; 138: 81-84, 2023 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-37210037

RESUMO

BACKGROUND: The methods currently used in Europe and North America to evaluate the bactericidal efficacy of hand hygiene products have some limitations (e.g. selection of test organism, method of contamination), and none of the methods allow prediction of actual clinical efficacy. Therefore, the World Health Organization has proposed the development of methods that better reflect typical clinical reality. METHODS: In Experiment 1, two contamination methods (immersion method according to EN 1500 and low-volume method according to ASTM E2755) were tested with the EN 1500 test organism Escherichia coli using 60% v/v iso-propanol. Experiment 2 compared the two contamination methods with Enterococcus faecalis. Experiment 3 compared the two test organisms using the low-volume contamination method. Data within each experiment were compared using the Wilcoxon test for paired samples, and data from all experiments were combined and fit to linear mixed-effects models. RESULTS: Mixed-effects analysis confirmed that both the test organism and the contamination method impacted the pre-values, and all three factors influenced log10 reductions. Higher pre-values resulted in significantly higher log10 reductions, immersion contributed to significantly higher log10 reductions, and E. coli showed significantly lower log10 reductions. CONCLUSION: An efficacy evaluation against E. faecalis with a low-volume contamination method could be considered as an alternative to the EN 1500 standard. This could help to improve the clinical relevance of the test method by including a Gram-positive organism and reducing the soil load, allowing product application closer to reality.


Assuntos
Desinfetantes , Escherichia coli , Humanos , Desinfecção das Mãos/métodos , 2-Propanol , Mãos
17.
Epidemiol Infect ; 151: e73, 2023 04 28.
Artigo em Inglês | MEDLINE | ID: mdl-37114751

RESUMO

My 5 moments (M5M) was used less frequently among cleaning staff members, suggesting that a poor compliance score in this group may not indicate deficient handwashing. This quasi-experimental study compared hand hygiene compliance (HHC), hand hygiene (HH) moments, and HH time distribution in the control group (no HH intervention; n = 21), case group 1 (normal M5M intervention; n = 26), case group 2 (extensive novel six moments (NSM) training; n = 24), and case group 3 (refined NSM training; n = 18). The intervention's effect was evaluated after 3 months. The HHC gap among the four groups gradually increased in the second intervention month (control group, 31.43%; case group 1, 38.74%; case group 2, 40.19%; case group 3, 52.21%; p < 0.05). After the intervention period, the HHC of case groups 2 and 3 improved significantly from the baseline (23.85% vs. 59.22%, 27.41% vs. 83.62%, respectively; p < 0.05). 'After transferring medical waste from the site' had the highest HHC in case group 3, 90.72% (95% confidence interval, 0.1926-0.3967). HH peak hours were from 6 AM to 9 AM and 2 PM to 3 PM. The study showed that the implementation of an NSM practice can serve as an HHC monitoring indicator and direct relevant training interventions to improve HH among hospital cleaning staff.


Assuntos
Infecção Hospitalar , Fidelidade a Diretrizes , Desinfecção das Mãos , Higiene das Mãos , Humanos , Infecção Hospitalar/prevenção & controle , Desinfecção das Mãos/métodos , Desinfecção das Mãos/normas , Pessoal de Saúde , Hospitais , Controle de Infecções , Recursos Humanos em Hospital
18.
Surgeon ; 21(6): 344-350, 2023 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-37121827

RESUMO

BACKGROUND: Hand scrubbing is an absolute precaution to avoid surgical site infections. World Health Organization (WHO) recommends 4-min overall scrubbing (4MS) for surgical hand hygiene. However, we hypothesize that the more methodical 10-stroke counting technique (10SS) via locational partitioning of the arm is superior to WHO's superficial guideline dictating only the duration. PURPOSE: The mechanical efficiency of 4MS and 10SS techniques are compared. METHODS: 24 healthcare professionals were recruited for the study. A novel methodology was devised to quantify the average brightness change of skin-applied UV ink before and after scrubbing via pixel intensity analysis. A black-box setup is constructed with an integrated high-resolution camera to photograph the UV-stained dorsal arm. Each stain was then digitally isolated for brightness comparison. RESULTS: It was observed that the 10SS technique was overall more successful in removing the UV ink in comparison to the 4MS method (p = 0.014). In addition, a bias was observed in removing more percentage of the proximal stains when compared to middle and distal stains with the 4MS technique (p = 0.0027), while location-based brightness change averages were statistically equal with the 10SS technique (p = 0.423). CONCLUSIONS AND CLINICAL RELEVANCE: 10SS provided not only a more mechanically efficient scrubbing but also a more homogenous cleaning than 4MS. We recommend the use of the 10SS technique to achieve more effective pre-surgical hand hygiene.


Assuntos
Lista de Checagem , Desinfecção das Mãos , Humanos , Desinfecção das Mãos/métodos , Infecção da Ferida Cirúrgica , Mãos/cirurgia , Fatores de Tempo
19.
Am J Infect Control ; 51(10): 1167-1171, 2023 10.
Artigo em Inglês | MEDLINE | ID: mdl-37044262

RESUMO

BACKGROUND: Hand disinfection (HD) is known to be the single most effective prevention measure to avoid nosocomial infections, but the compliance rate (CR) remains low. The aim of this study was to determine the incidence of HD opportunities and the CR during the treatment of critically ill patients. One special focus was on glove usage to determine whether gloves were substituted for HD. METHODS: This is a single-blinded direct observation of employees of an.ßintensive care unit. One specially educated observer recorded all hand hygiene indications over a period of 21 8-hour shifts as well as performed HD and study of glove use behavior. RESULTS: Over a period of 168.ßhours, 2,036 HDs should be performed during the care for 1 intensive care unit patient. In total, only 690 HDs occurred, resulting in a CR of 33.9%. With regard to the nurses, there was an HD opportunity around the clock every 6.ßminutes on average. About 17% of the total working time would have to be applied for 100% correct hand hygiene application. Donning or changing of gloves took place in 38.2% of all indications for HD. CONCLUSIONS: Our results show that HD opportunities occur in high frequency during the treatment of critically ill patients. The compliance with HD remains too low, even when a 100% CR seems to be unachievable. Improvements should focus on aseptic procedures, combining the lowest CR with the highest procedural risk for the patient. The Healthcare Personal (HCP) uses gloves when an HD opportunity occurs. Implementing glove disinfection strategies in daily routine might help optimize patient care.


Assuntos
Infecção Hospitalar , Higiene das Mãos , Humanos , Estado Terminal , Infecção Hospitalar/prevenção & controle , Fidelidade a Diretrizes , Desinfecção das Mãos/métodos , Higiene das Mãos/métodos , Controle de Infecções/métodos , Unidades de Terapia Intensiva
20.
J Hosp Infect ; 136: 85-89, 2023 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-37088218

RESUMO

BACKGROUND: Hand hygiene is a simple and low-cost practice to prevent the spread of many micro-organisms that cause healthcare-associated infections. AIM: This is a descriptive study designed to investigate the compliance of patient companions and visitors with hand hygiene. METHODS: The study included 209 companions and visitors of patients hospitalized in a university hospital in the west of Turkey. A demographics and hand hygiene questionnaire and a hand hygiene practice observation form were used to acquire data. FINDINGS: Of the patient companions and visitors, 96.2% stated that they did not receive training on the importance of handwashing during their stay in the hospital, and 74.6% stated that handwashing was very important in the prevention of diseases. The patient families reported that they most often washed their hands after touching bodily fluids (91.7%), and that they rarely washed their hands before touching a patient (34.0%). The rates were decreased in the observations; the lowest rate for handwashing was before touching a patient (22.4%) and the highest rate for handwashing was after the risk for contamination with body fluids of the patient (68.6%). CONCLUSION: The patient companions and visitors received no training on the importance of hand hygiene during the hospital stay, and the observed rate of compliance with hand hygiene was lower than stated. Recommendations include delivering planned handwashing training to patient companions and visitors using different teaching methods, and to conduct longer observational studies.


Assuntos
Infecção Hospitalar , Higiene das Mãos , Humanos , Fidelidade a Diretrizes , Infecção Hospitalar/prevenção & controle , Desinfecção das Mãos/métodos , Hospitais Universitários
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