Cytotoxicity and concentration of silver ions released from dressings in the treatment of infected wounds: a systematic review.

Introduction: Silver-releasing dressings are used in the treatment of infected wounds. Despite their widespread use, neither the amount of silver released nor the potential in vivo toxicity is known. The aim of this study was to evaluate the cytotoxic effects and the amount of silver released from commercially available dressings with infected wounds. Methods: The review was conducted according to the PRISMA statement. The Web of Science, PubMed, Embase, Scopus, and CINAHL databases were searched for studies from 2002 through December 2022. The criteria were as follows: population (human patients with infected wounds); intervention (commercial dressings with clinical silver authorized for use in humans); and outcomes (concentrations of silver ions released into tissues and plasma). Any study based on silver-free dressings, experimental dressings, or dressings not for clinical use in humans should be excluded. According to the type of study, systematic reviews, experimental, quasi-experimental, and observational studies in English, Spanish, or Portuguese were considered. The quality of the selected studies was assessed using the JBI critical appraisal tools. Studies that assessed at least 65% of the included items were included. Data were extracted independently by two reviewers. Results: 740 articles were found and five were finally selected (all of them quasi-experimental). Heterogeneity was found in terms of study design, application of silver dressings, and methods of assessment, which limited the comparability between studies. Conclusion: In vivo comparative studies of clinical dressings for control of infection lack a standardized methodology that allows observation of all the variables of silver performance at local and systemic levels, as well as evaluation of its cytotoxicity. It cannot be concluded whether the assessed concentrations of released silver in commercial dressings for the topical treatment of infected wounds are cytotoxic to skin cells. Systematic review registration: https://www.crd.york.ac.uk/prospero/display_record.php?ID=CRD42022351041, PROSPERO [CRD42022351041].

MODPATH-RW: A Random Walk Particle Tracking Code for Solute Transport in Heterogeneous Aquifers.

Random walk particle tracking (RWPT) is a discrete particle method that offers several advantages for simulating solute transport in heterogeneous geological systems. The formulation is a discrete solution to the advection-dispersion equation, yielding results that are not influenced by grid-related numerical dispersion. Numerical dispersion impacts the magnitude of concentrations and gradients obtained from classical grid-based solvers in advection-dominated problems with relatively large grid Péclet numbers. Accurate predictions of concentrations are crucial for reactive transport studies, and RWPT has been recognized for its potential benefits for this kind of application. This highlights the need for a solute transport program based on RWPT that can be seamlessly integrated with industry-standard groundwater flow models. This article presents a solute transport code that implements the RWPT method by extension of the particle tracking model MODPATH, which provides the base infrastructure for interacting with several variants of MODFLOW groundwater flow models. The implementation is achieved by developing a method for determining the exact cell-exit position of a particle undergoing simultaneous advection and dispersion, allowing for the sequential transfer of particles between flow model cells. The program is compatible with rectangular unstructured grids and integrates a module for the smoothed reconstruction of concentrations. In addition, the program incorporates parallel processing of particles using the OpenMP library, enabling faster simulations of solute transport in heterogeneous systems. Numerical test cases involving different applications in hydrogeology benchmark the RWPT model with well-known transport codes.

Analysis of cardiovascular risk factors for the viability of cornea donors: a case-control study.

OBJECTIVE: The main objective of the study was to evaluate the influence of arterial hypertension, diabetes, dyslipidaemia, smoking, alcoholism and COPD (chronic obstructive pulmonary disease) on the viability of the extracted tissue as well as the donor. DESIGN: Observational case-control study. SETTING: Regional hospital in Northern Spain. PARTICIPANTS: 1517 corneas were registered. INTERVENTIONS: Patients' medical history was reviewed after corneal donation and evaluation. Previous medical information (age, sex and cardiovascular risk factors (CVRFs)) and data related to the donor (type of donor), the corneal tissue and its evaluation, and the viability of the implant were collected. RESULTS: A total of 1517 corneas were registered and 81.5% of the donors presented at least one CVRF. In relation to the viability of the donor, it was observed that having suffered from COPD reduced the viability of the donor (no COPD: 93.8% vs COPD: 88%; OR=0.49; 95% CI: 0.28 to 0.84) while alcohol consumption increased it (drinker or ex-drinker: 95.8% vs non-drinker: 92.5%; OR=1.84; 95% CI: 1.01 to 3.33). Regarding tissue viability, decreased viability was observed in the presence of COPD (no COPD: 72.5% vs COPD: 64; OR=0.67; 95% CI: 0.47 to 0.96) and diabetes mellitus (no diabetes: 72.9% vs diabetes: 67.2%; OR=0.76; 95% CI: 0.58 to 0.99). As regards the viability of the implant, a total of 1039 corneas (68.9%) were suitable, observing decreased viability when suffering from COPD (no COPD: 69.8% vs COPD: 60.7%; OR=0.67; 95% CI: 0.47 to 0.94) and increased when having an active smoking habit (no habit: 65.3% vs habit: 74.1%; OR=1.52; 95% CI: 1.21 to 1.91). CONCLUSIONS: Through this study, it can be concluded that in the absence of absolute exclusion criteria for donors, the assessment of how CVRF, alcoholism and COPD may affect the donor provides details about the quality of the tissue to be obtained.

Presenteeism and mental health of workers during the COVID-19 pandemic: a systematic review.

Background: A large number of workers attend work despite being ill. Attending work during sickness can have a number of consequences for the worker (e.g., worsening of physical and mental condition), for co-workers, and for the company, and for service users. Objectives: The aim of this study was to assess the factors influencing presenteeism and mental health of workers during the COVID-19 pandemic. Methods: A systematic review following the PRISMA format was conducted in the PubMed, Scopus, Web of Science (WoS), Cumulative Index to Nursing and Allied Health Literature (CINAHL), PsycInfo, and ScienceDirect electronic databases in January 2023, using the following key words: Presenteeism, Mental Health, and COVID-19. The eligibility criteria applied were original articles published in English, Spanish, French, German, and Portuguese, workers during the COVID-19 pandemic (data collection date: January 01, 2020 - January 01, 2023), and articles assessing at least one measure of presenteeism and mental health status. Methodological quality was assessed using the critical appraisal tools of the Joanna Briggs Institute. The followed protocol is listed in the International Prospective Register of Systematic Reviews (PROSPERO) with code CRD42023391409. Results: A total of 25 studies were included in this review recruiting a total of 164,274 participants. A number of factors influencing mental health and sickness presenteeism were identified: (1) mental health-related factors (burnout [in 4 studies], stress [in 9 studies], depression [in 1 study], fear of COVID-19 [in 1 study], no well-being [in 2 studies], etc.); (2) individual factors (health status [in 1 study], being young [in 1 study], workers who experienced interrupted medical care [in 2 studies], having a chronic disease [in 1 study], etc.); (3) factors related to the situation caused by COVID-19 (confinement, symptoms, loss of contract, risk of bankruptcy, etc. [in 1 study each one]); and (4) factors derived from working conditions (organisational support [in 1 study], patient care [in 1 study], work functioning or task performance impairment [in 4 studies], work fatigue [in 2 studies], safety climate [in 1 study], workload [in 1 study], etc.). Conclusion: Identifying the key determinants of presenteeism and understanding the phenomena and origins of sickness presenteeism will help to create a safe working environment and optimal organisational systems to protect vulnerable workers in a pandemic context. Systematic review registration: The unique identifier is CRD42023391409.

Implications of gut and oral microbiota in neuroinflammatory responses in Alzheimer's disease.

A diverse and stable microbiota promotes a healthy state, nevertheless, an imbalance in gut or oral bacterial composition, called dysbiosis, can cause gastrointestinal disorders, systemic inflammatory states and oxidative stress, among others. Recently, gut and oral dysbiosis has been linked to Alzheimer's disease (AD), which is considered the most common form of dementia and a public health priority due to its high prevalence and incidence. The aim of this review is to highlight the implications of gut and oral microbiota in the neuroinflammation characteristic of AD pathology and the subsequent cognitive impairment. It is a systematic review of the current literature obtained by searching the PubMed, Web of Science and Scopus databases. The characteristic intestinal dysbiosis in AD patients leads to increased permeability of the intestinal barrier and activates immune cells in the central nervous system due to translocation of microbiota-derived metabolites and/or bacteria into the circulation leading to increased neuroinflammation and neuronal loss, thus generating the cognitive impairment characteristic of AD. The presence in the central nervous system of Porphyromonas gingivalis can cause an increased neuroinflammation and beta-amyloid peptide accumulation.

Baseline Mutations and ctDNA Dynamics as Prognostic and Predictive Factors in ER-Positive/HER2-Negative Metastatic Breast Cancer Patients.

PURPOSE: Prognostic and predictive biomarkers to cyclin-dependent kinases 4 and 6 inhibitors are lacking. Circulating tumor DNA (ctDNA) can be used to profile these patients and dynamic changes in ctDNA could be an early predictor of treatment efficacy. Here, we conducted plasma ctDNA profiling in patients from the PEARL trial comparing palbociclib+fulvestrant versus capecitabine to investigate associations between baseline genomic landscape and on-treatment ctDNA dynamics with treatment efficacy. EXPERIMENTAL DESIGN: Correlative blood samples were collected at baseline [cycle 1-day 1 (C1D1)] and prior to treatment [cycle 1-day 15 (C1D15)]. Plasma ctDNA was sequenced with a custom error-corrected capture panel, with both univariate and multivariate Cox models used for treatment efficacy associations. A prespecified methodology measuring ctDNA changes in clonal mutations between C1D1 and C1D15 was used for the on-treatment ctDNA dynamic model. RESULTS: 201 patients were profiled at baseline, with ctDNA detection associated with worse progression-free survival (PFS)/overall survival (OS). Detectable TP53 mutation showed worse PFS and OS in both treatment arms, even after restricting population to baseline ctDNA detection. ESR1 mutations were associated with worse OS overall, which was lost when restricting population to baseline ctDNA detection. PIK3CA mutations confer worse OS only to patients on the palbociclib+fulvestrant treatment arm. ctDNA dynamics analysis (n = 120) showed higher ctDNA suppression in the capecitabine arm. Patients without ctDNA suppression showed worse PFS in both treatment arms. CONCLUSIONS: We show impaired survival irrespective of endocrine or chemotherapy-based treatments for patients with hormone receptor-positive/HER2-negative metastatic breast cancer harboring plasma TP53 mutations. Early ctDNA suppression may provide treatment efficacy predictions. Further validation to fully demonstrate clinical utility of ctDNA dynamics is warranted.

Analysis of Knowledge of Smoking-Related Diseases in Spanish Nursing Students.

Smoking causes significant morbidity and mortality worldwide, mainly in developed countries. In addition, it is the cause of numerous diseases in the body, despite the fact that the prevalence of tobacco use is decreasing. Nursing students, as future professionals, should be aware of action plans for cessation and information designed for smokers. To determine the level of knowledge among nursing students about smoking-related diseases and analyze the prevalence of student who smoke at the University of Leon, Spain, a descriptive cross-sectional study was carried out in which students were given an anonymous questionnaire, which was previously validated, during the 2021-2022 academic year. In a sample of 477 (79.5%) nursing students, a smoking prevalence of 17.6% was obtained. In addition, students' knowledge about the diseases directly caused by tobacco consumption and others associated with exposure to environmental smoke was assessed, and in both cases (8.03 points of 9 for consumption and 5.24 of 6 to exposure), scores were obtained that allow us to state that students do not know for sure the types of diseases that are related to tobacco use and passive smoking. In spite of this, it is necessary to continue to reduce the prevalence of smoking through different programs implemented in schools and universities, as it is also necessary to improve teaching plans when explaining smoking-related diseases, so that students, in the future, will be able to advise patients correctly.

La importancia de estar incluido en el Emerging sources Citation Index para las revistas y autores españoles / The importance of being included in the emerging sources citation index for spanish journals and authors

La evaluación de la actividad de los investigadores, de sus publicaciones y de las revistas donde se publican dichos trabajos, es un proceso continuo y necesario para poder valorar la calidad y el impacto de los mismos. Estas revistas están indexadas en diferentes bases de datos, siendo la Web Of Science una de las más importantes, junto con Scopus, debido a la cantidad de información que tiene recogida y a los rigurosos criterios que deben cumplir las revistas para ser incluidas en ella. Una nueva herramienta de esta base de datos es el Emerging Sources Citation Index, que contiene revistas que o bien están en proceso de evaluación, o bien son revistas que presentan una calidad científica acreditada en su disciplina, pero que nunca llegarán a integrarse en la Web of Science ya que su área de conocimiento es limitada y previsiblemente nunca llegaran a tener un factor de impacto suficientemente alto. El estar incluido en este recurso, como lo está ROL Revista de Enfermería, tiene un gran valor para las revistas y para los autores que publican sus trabajos en ellas ya que supone un mérito valorado en la mayoría de los procesos de evaluación de los investigadores, como por ejemplo en la Agencia Nacional de Evaluación de la Calidad y Acreditación (ANECA). (AU)

The evaluation of the activity of researchers, their publications and the journals where these works are published, is a continuous and necessary process to assess their quality and impact. These journals are indexed in different databases, being Web Of Science one of the most important, together with Scopus, due to the amount of information it has collected and the rigorous criteria that journals must meet to be included in it. A new tool of this database is the Emerging Sources Citation Index, which contains journals that are either in the process of evaluation, or are journals that have a proven scientific quality in their discipline, but that will never be included in the Web of Science because their area of knowledge is limited and they will probably never have a sufficiently high impact factor. Being included in this resource, as ROL Revista de Enfermería is, has a great value for the journals and for the authors who publish their work in them, since it is a merit valued in most of the evaluation processes of researchers, such as the National Agency for Quality Assessment and Accreditation (ANECA). (AU)

CCNE1 and PLK1 Mediate Resistance to Palbociclib in HR+/HER2- Metastatic Breast Cancer.

PURPOSE: In hormone receptor-positive (HR+)/HER2- metastatic breast cancer (MBC), it is imperative to identify patients who respond poorly to cyclin-dependent kinase 4/6 inhibitors (CDK4/6i) and to discover therapeutic targets to reverse this resistance. Non-luminal breast cancer subtype and high levels of CCNE1 are candidate biomarkers in this setting, but further validation is needed. EXPERIMENTAL DESIGN: We performed mRNA gene expression profiling and correlation with progression-free survival (PFS) on 455 tumor samples included in the phase III PEARL study, which assigned patients with HR+/HER2- MBC to receive palbociclib+endocrine therapy (ET) versus capecitabine. Estrogen receptor-positive (ER+)/HER2- breast cancer cell lines were used to generate and characterize resistance to palbociclib+ET. RESULTS: Non-luminal subtype was more prevalent in metastatic (14%) than in primary tumor samples (4%). Patients with non-luminal tumors had median PFS of 2.4 months with palbociclib+ET and 9.3 months with capecitabine; HR 4.16, adjusted P value < 0.0001. Tumors with high CCNE1 expression (above median) also had worse median PFS with palbociclib+ET (6.2 months) than with capecitabine (9.3 months); HR 1.55, adjusted P value = 0.0036. In patients refractory to palbociclib+ET (PFS in the lower quartile), we found higher levels of Polo-like kinase 1 (PLK1). In an independent data set (PALOMA3), tumors with high PLK1 show worse median PFS than those with low PLK1 expression under palbociclib+ET treatment. In ER+/HER2- cell line models, we show that PLK1 inhibition reverses resistance to palbociclib+ET. CONCLUSIONS: We confirm the association of non-luminal subtype and CCNE1 with resistance to CDK4/6i+ET in HR+ MBC. High levels of PLK1 mRNA identify patients with poor response to palbociclib, suggesting PLK1 could also play a role in the setting of resistance to CDK4/6i.

Comparison of phenomics and cfDNA in a large breast screening population: the Breast Screening and Monitoring Study (BSMS).

To assess their roles in breast cancer diagnostics, we aimed to compare plasma cell-free DNA (cfDNA) levels with the circulating metabolome in a large breast screening cohort of women recalled for mammography, including healthy women and women with mammographically detected breast diseases, ductal carcinoma in situ and invasive breast cancer: the Breast Screening and Monitoring Study (BSMS). In 999 women, plasma was analyzed by nuclear magnetic resonance (NMR) and Ultra-Performance Liquid Chromatography-Mass Spectrometry (UPLC-MS) and then processed to isolate and quantify total cfDNA. NMR and UPLC-MS results were compared with data for 186 healthy women derived from the AIRWAVE cohort. Results showed no significant differences between groups for all metabolites, whereas invasive cancers had significantly higher plasma cfDNA levels than all other groups. When stratified the supervised OPLS-DA analysis and total cfDNA concentration showed high discrimination accuracy between invasive cancers and the disease/medication-free subjects. Furthermore, comparison of OPLS-DA data for invasive breast cancers with the AIRWAVE cohort showed similar discrimination between breast cancers and healthy controls. This is the first report of agreement between metabolomics and plasma cfDNA levels for discriminating breast cancer from healthy subjects in a true screening population. It also emphasizes the importance of sample standardization. Follow on studies will involve analysis of candidate features in a larger validation series as well as comparing results with serial plasma samples taken at the next routine screening mammography appointment. The findings here help establish the role of plasma analysis in the diagnosis of breast cancer in a large real-world cohort.

Multiprocessing for the Particle Tracking Model MODPATH.

Particle tracking has several important applications for solute transport studies in aquifer systems. Travel time distribution at observation points, particle coordinates in time and streamlines are some practical results providing information of expected transport patterns and interaction with boundary conditions. However, flow model complexity and simultaneous displacement of multiple particle groups leads to rapid increase of computational requirements. MODPATH is a particle tracking engine for MODFLOW models and source code displays potential for parallel processing of particles. This article addresses the implementation of this feature with the OpenMP library. Two synthetic aquifer applications are employed for performance tests on a desktop computer with increasing number of particles. Speed up analysis shows that dynamic thread scheduling is preferable for highly heterogeneous flows, providing processing adaptivity to the presence of slow particles. In simulations writing particles position in time, thread exclusive output files lead to higher speed up factors. Results show that above a threshold number of particles, simulation runtimes become independent of flow model grid complexity and are controlled by the large number of particles, then parallel processing reduces simulation runtimes for the particle tracking model MODPATH. Article impact statement: Parallel particles processing for MODPATH using the OpenMP library.

Applying the Modified Ten-Group Robson Classification in a Spanish Tertiary Hospital.

BACKGROUND: Caesarean section is necessary to save the lives of mothers and newborns at times, but it is important to perform it only when it is essential due to all the risks involved. This study aimed to examine the rate of caesarean sections performed at a tertiary hospital using the Robson classification to detect methods for the detection of and/or reduction in these caesarean section rates. METHODS: A descriptive, cross-sectional study of a retrospective database was carried out. RESULTS: A total of 10,317 births were assessed. The Robson classification was used to assess these interventions and verify whether the indication for performed caesarean sections was appropriate. In total, 2036 births by caesarean section were performed in the whole sample. The annual caesarean section rate varied between 18.67% and 21.18%. CONCLUSIONS: Caesarean sections increased by about 20% in 2021 compared to 2020 even though the trend over the years of study was decreasing. Vaginal delivery after caesarean section is a reasonable and safe option. Caesarean section rates could be improved, mostly in Robson's Group 2. The Robson classification facilitated progress in the implementation of measures aimed at improving care and adjusting caesarean section rates.

[Analysis of Bullying and Harassment Experienced by Fourth-Year Nursing Students in their Clinical Practice.] / Análisis de la intimidación y acoso experimentado por estudiantes de Enfermería de cuarto curso durante sus prácticas clínicas.

OBJECTIVE: Nursing students, with their inexperience and the frequent challenge of encountering new environments, are a potentially vulnerable group for bullying and harassment in the work setting. The aim of this study was to analyze the bullying and/or harassment experienced by Nursing students during their clinical practice. METHODS: A descriptive cross-sectional study was carried out at the University of León and the study population was fourth-year nursing students. The measurement instrument was a 24-item questionnaire approved by the University Ethics Committee. The chi-square test, Student's t-test and Mann Whitney U test were used for statistical analysis. RESULTS: A prevalence of 26.5% (22/83) of students who suffered episodes of bullying and/or harassment was observed; younger students suffered these events from physicians, patients and family members and/or companions to a greater extent. This produced an impact on the psychological well-being of the students, who felt depressed, humiliated and incapable, which negatively affected the level of care provided to patients. CONCLUSIONS: The overall problem studied presents a lower prevalence than that obtained in other work carried out in the rest of the world; as a consequence, there is an impact on the psychological well-being of the students that affects their level of attention to the tasks they are carrying out and their way of working with others.

OBJETIVO: Los estudiantes de Enfermería, con su inexperiencia y el desafío frecuente de encontrarse con nuevos entornos, son un grupo potencialmente vulnerable para sufrir intimidación y acoso en el ámbito del trabajo. El objetivo de este trabajo fue analizar la intimidación y/o acoso padecidos por los estudiantes de Enfermería durante sus prácticas clínicas. METODOS: Se realizó un estudio descriptivo transversal en la Universidad de León. La población a estudio fueron los estudiantes del Grado en Enfermería de cuarto curso. El instrumento de medida fue un cuestionario que constó de 24 items y que se aprobó por el Comité de Ética de la Universidad. Para el análisis estadístico se utilizó la prueba de chi-cuadrado, t de Student y la U de Mann Whitney. RESULTADOS: Se observó una prevalencia del 26,5% (n=83) de estudiantes que sufrieron episodios de intimidación y/o acoso; los estudiantes de menor edad padecieron estos hechos por parte de los médicos, pacientes y familiares y/o acompañantes en mayor medida. Esto produjo un impacto en su bienestar psicológico e hizo que se sintieran deprimidos, humillados e incapaces, lo que afectó negativamente al nivel de atención prestado a los pacientes. CONCLUSIONES: El problema global estudiado presenta una prevalencia inferior a la obtenida en otros trabajos llevados a cabo en el resto del mundo. Como consecuencia, existe un impacto en el bienestar psicológico de los estudiantes que afecta a su nivel de atención en las tareas que están llevando a cabo y a su forma de trabajar con los demás.

Análisis de la intimidación y acoso experimentado por estudiantes de Enfermería de cuarto curso durante sus prácticas clínicas / Analysis of Bullying and Harassment Experienced by Fourth-Year Nursing Students in their Clinical Practice

FUNDAMENTOS:Los estudiantes de Enfermería, con su inexperiencia y el desafío frecuente de encontrarse con nuevos entornos, son un grupo potencialmente vulnerable para sufrir intimidación y acoso en el ámbito del trabajo. El objetivo de este trabajo fue analizar la intimidación y/o acoso padecidos por los estudiantes de Enfermería durante sus prácticas clínicas. MÉTODOS: Se realizó un estudio descriptivo transversal en la Universidad de León. La población a estudio fueron los estudiantes del Grado en Enfermería de cuarto curso. El instrumento de medida fue un cuestionario que constó de 24 items y que se aprobó por el Comité de Ética de la Universidad. Para el análisis estadístico se utilizó la prueba de chi-cuadrado, t de Student y la U de Mann Whitney. RESULTADOS: Se observó una prevalencia del 26,5% (n=83) de estudiantes que sufrieron episodios de intimidación y/o acoso; los estudiantes de menor edad padecieron estos hechos por parte de los médicos, pacientes y familiares y/o acompañantes en mayor medida. Esto produjo un impacto en su bienestar psicológico e hizo que se sintieran deprimidos, humillados e incapaces, lo que afectó negativamente al nivel de atención prestado a los pacientes. CONCLUSIONES: El problema global estudiado presenta una prevalencia inferior a la obtenida en otros trabajos llevados a cabo en el resto del mundo. Como consecuencia, existe un impacto en el bienestar psicológico de los estudiantes que afecta a su nivel de atención en las tareas que están llevando a cabo y a su forma de trabajar con los demás.(AU)

BACKGROUND: Nursing students, with their inexperience and the frequent challenge of encountering new environments, are a potentially vulnerable group for bullying and harassment in the work setting. The aim of this study was to analyze the bullying and/ or harassment experienced by Nursing students during their clinical practice. METHODS: A descriptive cross-sectional study was carried out at the University of León and the study population was fourth-year nursing students. The measurement instrument was a 24-item questionnaire approved by the University Ethics Committee. The chi-square test, Student’s t-test and Mann Whitney U test were used for statistical analysis. RESULTS: A prevalence of 26.5% (22/83) of students who suffered episodes of bullying and/or harassment was observed; younger students suffered these events from physicians, patients and family members and/or companions to a greater extent. This produced an impact on the psychological well-being of the students, who felt depressed, humiliated and incapable, which negatively affected the level of care provided to patients. CONCLUSIONS: The overall problem studied presents a lower prevalence than that obtained in other work carried out in the rest of the world; as a consequence, there is an impact on the psychological well-being of the students that affects their level of attention to the tasks they are carrying out and their way of working with others.(AU)

Shallow WGS of individual CTCs identifies actionable targets for informing treatment decisions in metastatic breast cancer.

BACKGROUND: We report copy-number profiling by low-pass WGS (LP-WGS) in individual circulating tumour cells (CTCs) for guiding treatment in patients with metastatic breast cancer (MBC), comparing CTC results with mutations detected in circulating tumour DNA (ctDNA) in the same blood samples. METHODS: Across 10 patients with MBC who were progressing at the time of blood sampling and that had >20 CTCs detected by CellSearch®, 63 single cells (50 CTCs and 13 WBCs) and 16 cell pools (8 CTC pools and 8 WBC pools) were recovered from peripheral blood by CellSearch®/DEPArray™ and sequenced with Ampli1 LowPass technology (Menarini Silicon Biosystems). Copy-number aberrations were identified using the MSBiosuite software platform, and results were compared with mutations detected in matched plasma cfDNA analysed by targeted next-generation sequencing using the Oncomine™ Breast cfDNA Assay (Thermo Fisher). RESULTS: LP-WGS data demonstrated copy-number gains/losses in individual CTCs in regions including FGFR1, JAK2 and CDK6 in five patients, ERBB2 amplification in two HER2-negative patients and BRCA loss in two patients. Seven of eight matched plasmas also had mutations in ctDNA in PIK3CA, TP53, ESR1 and KRAS genes with mutant allele frequencies (MAF) ranging from 0.05 to 33.11%. Combining results from paired CTCs and ctDNA, clinically actionable targets were identified in all ten patients. CONCLUSION: This combined analysis of CTCs and ctDNA may offer a new approach for monitoring of disease progression and to direct therapy in patients with advanced MBC, at a time when they are coming towards the end of other treatment options.

Resilience, Perceived Stress, and Depressed Mood in Women Under in Vitro Fertilization Treatment.

It has been suggested that women who display higher resilience levels may have less psychological distress during IVF. The aim of this study was to evaluate how infertile women deal with perceived stress, depressed mood, and sleep disturbances at the first IVF attempt and after one or more negative IVF outcomes depending on their level of resilience. An observational, cross-sectional study was carried out in a sample of 207 infertile women undergoing IVF procedures. The participants completed the short version of the Connor-Davidson Resilience Scale (CD-RISC), the short version of the European Spanish Version of Perceived Stress Scale (PSS-10), the Center of Epidemiologic Studies Depression Scale (CESD-10), and the Jenkins Sleep Scale (JSS). The relationship between CD-RISC scores ranked according to percentiles and mean PSS-10 scores revealed that women with strong resilience had lower perceived stress. After splitting the sample according to CD-RISC percentiles, differences were observed only at the first IVF attempt and the observed protective effect of high resilience scores appears to disappear following a negative IVF outcome. Women with high resilience are less likely to suffer from perceived stress or depressed mood during their first IVF attempt, this protective effect appears to be lost after a negative outcome.

Circulating Tumor DNA Profiling From Breast Cancer Screening Through to Metastatic Disease.

PURPOSE: We investigated the utility of the Oncomine Breast cfDNA Assay for detecting circulating tumor DNA (ctDNA) in women from a breast screening population, including healthy women with no abnormality detected by mammogram, and women on follow-up through to advanced breast cancer. MATERIALS AND METHODS: Blood samples were taken from 373 women (127 healthy controls recruited through breast screening, 28 ductal carcinoma in situ, 60 primary breast cancers, 47 primary breast cancer on follow-up, and 111 metastatic breast cancers [MBC]) to recover plasma and germline DNA for analysis with the Oncomine Breast cfDNA Assay on the Ion S5 platform. RESULTS: One hundred sixteen of 373 plasma samples had one or more somatic variants detected across eight of the 10 genes and were called ctDNA-positive; MBC had the highest proportion of ctDNA-positive samples (61; 55%) and healthy controls the lowest (20; 15.7%). ESR1, TP53, and PIK3CA mutations account for 93% of all variants detected and predict poor overall survival in MBC (hazard ratio = 3.461; 95% CI, 1.866 to 6.42; P = .001). Patients with MBC had higher plasma cell-free DNA levels, higher variant allele frequencies, and more polyclonal variants, notably in ESR1 than in all other groups. Only 15 individuals had evidence of potential clonal hematopoiesis of indeterminate potential mutations. CONCLUSION: We were able detect ctDNA across the breast cancer spectrum, notably in MBC where variants in ESR1, TP53, and PIK3CA predicted poor overall survival. The assay could be used to monitor emergence of resistance mutations such as in ESR1 that herald resistance to aromatase inhibitors to tailor adjuvant therapies. However, we suggest caution is needed when interpreting results from a single plasma sample as variants were also detected in a small proportion of HCs.

Teaching and Evaluation Methods of the Use of the Tourniquet in Severe Limb Bleeding among Health Care Professionals: A Systematic Review.

INTRODUCTION AND OBJECTIVES: Massive hemorrhage (MH) is a growing pathology in military settings and increasingly in civilian settings; it is now considered a public health problem in the United States with large-scale programs. Tourniquets are the fastest and most effective intervention in MH if direct pressure is not effective.The Liaison Committee on Resuscitation (ILCOR) recognizes a knowledge gap in optimal education techniques for first aid providers. This review aims to describe training and evaluation methods for teaching tourniquet use to both health care and military professionals. METHODS: The MEDLINE, CINAHL, WEB of Science, and Scopus databases were reviewed (from 2010 through April 2020). The quality of the selected studies was assessed using the Consolidated Standards of Reporting Trials (CONSORT) scale. Studies that met at least 65% of the included items were included. Data were extracted independently by two reviewers. RESULTS: Ten of the 172 articles found were selected, of which three were randomized clinical trials. Heterogeneity was observed in the design of the studies and in the training and evaluative methods that limit the comparison between studies. CONCLUSIONS: The results suggest that the training strategies studied are effective in improving knowledge, attitudes, and practical skills. There is no universal method, learning is meaningful but research should be directed to find out which ones work best.

Related Factors and Treatment of Postoperative Delirium in Old Adult Patients: An Integrative Review.

"Postoperative delirium" is defined as delirium occurring in the hospital up to one week after a procedure or before discharge (whichever occurs first) that meets the DSM-5 diagnostic criteria. Objectives: To describe the risk factors related to this pathology and identify effective non-pharmacological forms of treatment. An integrative review of the available literature was performed. The search results considered included all quantitative studies published between 2011 and 2019 in both English and Spanish. A total of 117 studies were selected. Advanced age was identified as the principal risk factor for postoperative delirium. Nursing interventions appear to be the key to preventing or reducing the seriousness of delirium after an anaesthetic episode. The aetiology of postoperative delirium remains unknown, and no treatment exists to eliminate this pathology. The role of nursing staff is fundamental in the prevention, diagnosis, and management of the pathology.

Basic life support training programme in schools by school nurses: How long and how often to train?

BACKGROUND: Cardiopulmonary resuscitation (CPR) training in schools, despite being legislated in Spain, is not established as such within the subjects that children are taught in schools. OBJECTIVE: to evaluate the acquisition of CPR skills by 11-year-old children after a brief theoretical-practical teaching programme taught by nurses at school. METHODS: 62 students were assessed in a quasi-experimental study on 2 cohorts (51.4% of the sample in control group [CG]). In total, 2 sessions were given, a theoretical one, and a practical training for skill development in children, in which the CG performed the CPR in 2-minute cycles and the intervention group in 1-minute cycles. The anthropometric variables recorded were weight and height, and the variables compression quality and ventilation quality were recorded using the Laerdal ResusciAnne manikin with Personal Computer/Wireless SkillReport. RESULTS: The assessment showed better results, in terms of BLS sequence performance and use of automated external defibrillator, in the CG and after training, except for the evaluation of the 10-second breathing assessment technique. The quality of chest compressions was better in the CG after training, as was the quality of the ventilations. There were no major differences in CPR quality after training and 4 months after the 1-minute and 2-minute training cycles. CONCLUSIONS: 11-year-old children do not perform quality chest compressions or ventilations but, considering their age, they are able to perform a BLS sequence correctly.