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SARS-CoV-2, the virus responsible for COVID-19, emerged in late 2019 and has since spread throughout the world, infecting over 200 million people. The fast spread of SARS-CoV-2 showcased the need for rapid and sensitive testing methodologies to help track the disease. Over the past 18 months, numerous SARS-CoV-2 variants have emerged. Many of these variants are suggested to be more transmissible as well as less responsive to neutralization by vaccine-induced antibodies. Viral whole-genome sequencing is the current standard for tracking these variants. However, whole-genome sequencing is costly and the technology and expertise are limited to larger reference laboratories. Here, we present the feasibility of a fast, inexpensive methodology using snapback primer-based high-resolution melting to test for >20 high-consequence SARS-CoV-2 spike mutations. This assay can distinguish between multiple variant lineages and be completed in roughly 2 h for less than $10 per sample.
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BACKGROUND: Nurses' response to patient deterioration in acute hospital wards is a priority issue. Simulation education programs improve nurses' knowledge and confidence, but the translation into better care is largely unknown for both web based (WB) and face to face (F2F) simulation programs. AIM: To measure the impact of simulation education on nurses' response to patient deterioration in acute medical ward settings, and to compare the impact of WB and F2F versions. DESIGN: An interrupted time series, non-randomised trial across four medical wards in Victoria, Australia. Wards were allocated to either web-based or face-to-face versions of the same simulation program, FIRST2ACT. Interrupted time series measurement for six fortnights both before and after the intervention were used to measure and compare responses to deterioration. Responses to patient deterioration were extracted from medical records and grouped into outcomes for escalation (e.g. initiation of clinical review), assessment and observation (e.g. increased recording of vital signs, conscious state and pain scores) and clinical interventions (e.g. oxygen administration). RESULTS: 126 nurses (89%) participated across the four wards. 946 patient records (506 in the F2F; 440 in the WB group) were included in analyses. There were significant and sustained improvements between pre and post samples in outcomes for escalation (13.0% to 28.8%; p = 0.000) and assessment and observation (conscious state recorded increased from 91.1% to 100%; p = 0.000, and pain score recorded increased from 97.8% to 99.8%; p = 0.000). There were no differences between the web-based and face-to-face groups except in appropriate oxygen application which increased by 7.7% in the F2F group and decreased by 11.8% in the WB group (p = 0.046). CONCLUSIONS: There was a significant improvement in nurses' response to patient deterioration following both versions of simulation, indicating that both have a role to play in supporting nurses' response to patient deterioration.
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Competencia Clínica , Enfermeras y Enfermeros , Humanos , Internet , Análisis de Series de Tiempo Interrumpido , VictoriaRESUMEN
BACKGROUND: There are international concerns relating to the management of patient deterioration. The "failure to rescue" literature identifies that nursing staff miss cues of deterioration and often fail to call for assistance. Simulation-based educational approaches may improve nurses' recognition and management of patient deterioration. OBJECTIVES: To investigate the educational impact of the First2Act web-based (WB) and face-to-face (F2F) simulation programs. DESIGN & SETTING: A mixed methods interventional cohort trial with nursing staff from four Australian hospitals. PARTICIPANTS: Nursing staff working in four public and private hospital medical wards in the State of Victoria. METHODS: In 2016, ward nursing staff (nâ¯=â¯74) from a public and private hospital completed three F2F laboratory-based team simulations with a patient actor in teams of three. 56 nursing staff from another public and private hospital individually completed a three-scenario WB simulation program (First2ActWeb) [A 91% participation rate]. Validated tools were used to measure knowledge (multi-choice questionnaire), competence (check-list of actions) and confidence (self-rated) before and after the intervention. RESULTS: Both WB and F2F participants' knowledge, competence and confidence increased significantly after training (pâ¯≤0.001). Skill performance for the WB group increased significantly from 61% to 74% (pâ¯≤â¯0.05) and correlated significantly with post-test knowledge (pâ¯=â¯0.014). No change was seen in the F2F groups' performance scores. Course evaluations were positive with median ratings of 4/5 (WB) and 5/5 (F2F). The F2F program received significantly more positive evaluations than the WB program (pâ¯<â¯0.05), particularly with regard to quality of feedback. CONCLUSION: WB and F2F simulation are effective education strategies with both programs demonstrating positive learning outcomes. WB programs increase ease of access to training whilst F2F enable the development of tactile hands on skills and teamwork. A combined blended learning education strategy is recommended to enhance competence and patient safety.
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Competencia Clínica , Deterioro Clínico , Internet , Simulación de Paciente , Estudiantes de Enfermería/psicología , Adulto , Retroalimentación , Femenino , Humanos , Masculino , Seguridad del Paciente , Aprendizaje Basado en Problemas , Encuestas y Cuestionarios , VictoriaRESUMEN
BACKGROUND: There are international concerns in relation to the management of patient deterioration which has led to a body of evidence known as the 'failure to rescue' literature. Nursing staff are known to miss cues of deterioration and often fail to call for assistance. Medical Emergency Teams (Rapid Response Teams) do improve the management of acutely deteriorating patients, but first responders need the requisite skills to impact on patient safety. METHODS/DESIGN: In this study we aim to address these issues in a mixed methods interventional trial with the objective of measuring and comparing the cost and clinical impact of face-to-face and web-based simulation programs on the management of patient deterioration and related patient outcomes. The education programs, known as 'FIRST(2)ACT', have been found to have an impact on education and will be tested in four hospitals in the State of Victoria, Australia. Nursing staff will be trained in primary (the first 8 min) responses to emergencies in two medical wards using a face-to-face approach and in two medical wards using a web-based version FIRST(2)ACTWeb. The impact of these interventions will be determined through quantitative and qualitative approaches, cost analyses and patient notes review (time series analyses) to measure quality of care and patient outcomes. DISCUSSION: In this 18 month study it is hypothesised that both simulation programs will improve the detection and management of deteriorating patients but that the web-based program will have lower total costs. The study will also add to our overall understanding of the utility of simulation approaches in the preparation of nurses working in hospital wards. (ACTRN12616000468426, retrospectively registered 8.4.2016).
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Instrucción por Computador , Internet/estadística & datos numéricos , Seguridad del Paciente , Simulación de Paciente , Calidad de la Atención de Salud , Entrenamiento Simulado , Instrucción por Computador/normas , Conducta Cooperativa , Hospitales Rurales , Humanos , Enfermeras y Enfermeros , Estudios Retrospectivos , Índice de Severidad de la Enfermedad , Entrenamiento Simulado/normasRESUMEN
BACKGROUND: Previous research has indicated a disconnect between academic nursing programmes and workplace learning environments. Nurse supervisors and clinical practitioners have reported inadequate information and training on how to support students of nursing to learn in the clinical setting. OBJECTIVE: This study aimed to investigate the level of confidence that clinical supervisors have in relation to specific components of supporting student learning in the work place. DESIGN: Survey of clinical nurse supervisors. SETTING: Simulation-based clinical reasoning workshops. PARTICIPANTS: Sixty participants: fifty nine registered nurses, including nurse managers and clinical nurse educators, and one allied health professional. METHODS: Survey using Likert scales and free-text questions. RESULTS: The findings indicated that clinicians were confident in sharing their knowledge and experience with students and making them feel welcome in the work place, they were less confident about what were the significant learnings in relation to students' academic programme. Registered nurses supervising students were experienced clinicians with many role responsibilities, which were perceived as barriers to the role of clinical supervisor. Participants reported that they would like tools to assist them with developing links to the academic programme. They considered that these tools would support student learning and remediation in the work place. CONCLUSIONS: This study found that the abilities of supervisors to support student learning is an identified gap impacting on work integrated learning. The results indicated the need for a professional development workshop, to enable clinical supervisors to move beyond promoting a supervision model, towards a theoretical framework for assisting and guiding students to learn. Addressing this deficit will improve growth and change in student learning in the work place.
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Capacitación en Servicio , Relaciones Interprofesionales , Aprendizaje , Supervisión de Enfermería , Aprendizaje Basado en Problemas , Adulto , Competencia Clínica , Femenino , Humanos , Masculino , Persona de Mediana Edad , Modelos Educacionales , Personal de Enfermería en Hospital , Estudiantes de Enfermería , Encuestas y Cuestionarios , Lugar de TrabajoRESUMEN
HIV-1 transmission and viral evolution in the first year of infection were studied in 11 individuals representing four transmitter-recipient pairs and three independent seroconverters. Nine of these individuals were enrolled during acute infection; all were men who have sex with men (MSM) infected with HIV-1 subtype B. A total of 475 nearly full-length HIV-1 genome sequences were generated, representing on average 10 genomes per specimen at 2 to 12 visits over the first year of infection. Single founding variants with nearly homogeneous viral populations were detected in eight of the nine individuals who were enrolled during acute HIV-1 infection. Restriction to a single founder variant was not due to a lack of diversity in the transmitter as homogeneous populations were found in recipients from transmitters with chronic infection. Mutational patterns indicative of rapid viral population growth dominated during the first 5 weeks of infection and included a slight contraction of viral genetic diversity over the first 20 to 40 days. Subsequently, selection dominated, most markedly in env and nef. Mutants were detected in the first week and became consensus as early as day 21 after the onset of symptoms of primary HIV infection. We found multiple indications of cytotoxic T lymphocyte (CTL) escape mutations while reversions appeared limited. Putative escape mutations were often rapidly replaced with mutually exclusive mutations nearby, indicating the existence of a maturational escape process, possibly in adaptation to viral fitness constraints or to immune responses against new variants. We showed that establishment of HIV-1 infection is likely due to a biological mechanism that restricts transmission rather than to early adaptive evolution during acute infection. Furthermore, the diversity of HIV strains coupled with complex and individual-specific patterns of CTL escape did not reveal shared sequence characteristics of acute infection that could be harnessed for vaccine design.
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Demografía , Evolución Molecular , Infecciones por VIH/virología , VIH-1/genética , Adulto , Secuencia de Bases , Cartilla de ADN , Ensayo de Inmunoadsorción Enzimática , Infecciones por VIH/transmisión , Homosexualidad Masculina , Humanos , Masculino , Reacción en Cadena de la Polimerasa , Procesos EstocásticosRESUMEN
Full-length HIV-1 genome sequencing provides important data needed to address several vaccine design, molecular epidemiologic and pathogenesis questions. A protocol is presented for obtaining near full-length genomes (NFLGs) from subjects infected with HIV-1 subtype C. This protocol was used to amplify NFLGs from 244 of 366 (67%) samples collected at two clinics in Durban, South Africa (SK and PS). Viral load was directly associated with frequency of successful NFLG amplification for both cohorts (PS; p = 0.005 and SK; p < 0.001). Seventeen of 38 initially NFLG-negative SK samples had variation within the PCR primer binding sites, however only 3 of these were successfully re-amplified using re-designed primers homologous to the target viruses. NFLGs were obtained from 7 of 24 PBMC samples processed from subjects whose plasma did not yield a NFLG. Stable plasmid clones were obtained from all 244 NFLG-positive PCR products, and both strands of each genome were sequenced, using a primary set of 46 primers. These methods thus allow the large-scale collection of HIV-1 NFLGs from populations infected primarily with subtype C. The methods are readily adaptable to other HIV-1 subtypes, and provide materials for viral functional analyses and population-based molecular epidemiology studies that include analysis of viral genome chimerization.