Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 4 de 4
Filtrar
Más filtros

Banco de datos
País/Región como asunto
Tipo del documento
País de afiliación
Intervalo de año de publicación
1.
Adv Health Sci Educ Theory Pract ; 23(4): 699-720, 2018 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-29564583

RESUMEN

After emphasizing biomedical and clinical sciences for over a century, US medical schools are expanding experiential roles that allow students to learn about health care delivery while also adding value to patient care. After developing a program where all 1st-year medical students are integrated into interprofessional care teams to contribute to patient care, authors use a diffusion of innovations framework to explore and identify barriers, facilitators, and best practices for implementing value-added clinical systems learning roles. In 2016, authors conducted 32 clinical-site observations, 29 1:1 interviews with mentors, and four student focus-group interviews. Data were transcribed verbatim, and a thematic analysis was used to identify themes. Authors discussed drafts of the categorization scheme, and agreed upon results and quotations. Of 36 sites implementing the program, 17 (47%) remained, 8 (22%) significantly modified, and 11 (31%) withdrew from the program. Identified strategies for implementing value-added roles included: student education, patient characteristics, patient selection methods, activities performed, and resources. Six themes influencing program implementation and maintenance included: (1) educational benefit, (2) value added to patient care from student work, (3) mentor time and site capacity, (4) student engagement, (5) working relationship between school, site, and students, and, (6) students' continuity at the site. Health systems science is an emerging focus for medical schools, and educators are challenged to design practice-based roles that enhance education and add value to patient care. Health professions' schools implementing value-added roles will need to invest resources and strategize about best-practice strategies to guide efforts.


Asunto(s)
Difusión de Innovaciones , Educación de Pregrado en Medicina/organización & administración , Ciencia de la Implementación , Aprendizaje , Curriculum , Humanos , Relaciones Interprofesionales , Conocimiento , Mentores , Grupo de Atención al Paciente/organización & administración , Navegación de Pacientes/organización & administración , Selección de Paciente , Atención Dirigida al Paciente/organización & administración , Calidad de la Atención de Salud , Factores de Tiempo , Estados Unidos
2.
Acc Chem Res ; 44(12): 1270-9, 2011 Dec 20.
Artículo en Inglés | MEDLINE | ID: mdl-21732619

RESUMEN

Catalysis in living cells is carried out by both proteins and RNA. Protein enzymes have been known for over 200 years, but RNA enzymes, or "ribozymes", were discovered only 30 years ago. Developing insight into RNA enzyme mechanisms is invaluable for better understanding both extant biological catalysis as well as the primitive catalysis envisioned in an early RNA-catalyzed life. Natural ribozymes include large RNAs such as the group I and II introns; small RNAs such as the hepatitis delta virus and the hairpin, hammerhead, VS, and glmS ribozymes; and the RNA portion of the ribosome and spliceosome. RNA enzymes use many of the same catalytic strategies as protein enzymes, but do so with much simpler side chains. Among these strategies are metal ion, general acid-base, and electrostatic catalysis. In this Account, we examine evidence for participation of charged nucleobases in RNA catalysis. Our overall approach is to integrate direct measurements on catalytic RNAs with thermodynamic studies on oligonucleotide model systems. The charged amino acids make critical contributions to the mechanisms of nearly all protein enzymes. Ionized nucleobases should be critical for RNA catalysis as well. Indeed, charged nucleobases have been implicated in RNA catalysis as general acid-bases and oxyanion holes. We provide an overview of ribozyme studies involving nucleobase catalysis and the complications involved in developing these mechanisms. We also consider driving forces for perturbation of the pK(a) values of the bases. Mechanisms for pK(a) values shifting toward neutrality involve electrostatic stabilization and the addition of hydrogen bonding. Both mechanisms couple protonation with RNA folding, which we treat with a thermodynamic formalism and conceptual models. Furthermore, ribozyme reaction mechanisms can be multichannel, which demonstrates the versatility of ribozymes but makes analysis of experimental data challenging. We examine advances in measuring and analyzing perturbed pK(a) values in RNA. Raman crystallography and fluorescence spectroscopy have been especially important for pK(a) measurement. These methods reveal pK(a) values for the nucleobases A or C equal to or greater than neutrality, conferring potential histidine- and lysine/arginine-like behavior on them. Structural support for ionization of the nucleobases also exists: an analysis of RNA structures in the databases conducted herein suggests that charging of the bases is neither especially uncommon nor difficult to achieve under cellular conditions. Our major conclusions are that cationic and anionic charge states of the nucleobases occur in RNA enzymes and that these states make important catalytic contributions to ribozyme activity. We conclude by considering outstanding questions and possible experimental and theoretical approaches for further advances.


Asunto(s)
ARN Catalítico/metabolismo , Biocatálisis , Virus de la Hepatitis Delta/metabolismo , Cinética , Metales/química , Conformación de Ácido Nucleico , ARN Catalítico/química , Termodinámica
3.
ATS Sch ; 3(3): 449-459, 2022 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-36312808

RESUMEN

Background: High-quality goals of care (GOC) communication is fundamental to providing excellent critical care. Objective: Educate medical intensive care unit (MICU) clinicians, design and implement workflows relating to GOC communication, and measure the impact on communication proficiency and rate of GOC documentation. Methods: Guided by Lean Six Sigma principles, an interprofessional team from palliative and critical care tailored a multicomponent intervention-the 3-Act Model communication training and workflow modification-to equip and empower the pulmonary and critical care medicine (PCCM) fellow as the clinical lead for GOC discussions. Fellows' education included in-person narrative reflection, asynchronous online didactic and demonstration videos of the 3-Act Model, online roleplays, and direct observation leading GOC discussions in the ICU. PCCM fellows were objectively evaluated for proficiency using the Goals of Care Assessment Tool. To evaluate the impact of our intervention on documented GOC conversations, we performed a retrospective chart review over two 3-month periods (before and after intervention) when the MICU cared exclusively for critically ill patients with coronavirus disease (COVID-19). Results: All PCCM fellows demonstrated proficiency in GOC communication via online simulated roleplays, as well as in observed bedside GOC communication. Per chart review of patients with a minimum of 7 consecutive days in the MICU, documented GOC conversations were found for 5.55% (2/36) of patients during the preintervention period and for 28.89% (13/45) of patients in the postintervention period. Palliative care consults increased in the pre- versus postintervention period: for all patients, 4.85% versus 14.52% (P < 0.05); for patients age ⩾80 years, 3.54% versus 29.41% (P < 0.05); and for patients with MICU length of stay ⩾7 days, 2.78% versus 24.44% (P < 0.05). Conclusion: Combining 3-Act Model education for PCCM fellows with Lean Six Sigma quality improvement resulted in effective GOC communication training and improved palliative care integration in the ICU.

4.
Acad Med ; 93(2): 256-264, 2018 02.
Artículo en Inglés | MEDLINE | ID: mdl-28991850

RESUMEN

PURPOSE: To develop a potential competency framework for faculty development programs aligned with the needs of faculty in academic health centers (AHCs). METHOD: In 2014 and 2015, the authors interviewed 23 health system leaders and analyzed transcripts using constant comparative analysis and thematic analysis. They coded competencies and curricular concepts into subcategories. Lead investigators reviewed drafts of the categorization themes and subthemes related to gaps in faculty knowledge and skills, collapsed and combined competency domains, and resolved disagreements via discussion. RESULTS: Through analysis, the authors identified four themes. The first was core functional competencies and curricular domains for conceptual learning, including patient-centered care, health care processes, clinical informatics, population and public health, policy and payment, value-based care, and health system improvement. The second was the need for foundational competency domains, including systems thinking, change agency/management, teaming, and leadership. The third theme was paradigm shifts in how academic faculty should approach health care, categorized into four areas: delivery, transformation, provider characteristics and skills, and education. The fourth theme was the need for faculty to be aware of challenges in the culture of AHCs as an influential context for change. CONCLUSIONS: This broad competency framework for faculty development programs expands existing curricula by including a comprehensive scope of health systems science content and skills. AHC leaders can use these results to better align faculty education with the real-time needs of their health systems. Future work should focus on optimal prioritization and methods for teaching.


Asunto(s)
Educación Médica , Docentes Médicos/educación , Competencia Profesional , Centros Médicos Académicos , Curriculum , Atención a la Salud , Humanos , Liderazgo , Informática Médica , Modelos Psicológicos , Evaluación de Necesidades , Investigación Cualitativa , Desarrollo de Personal
SELECCIÓN DE REFERENCIAS
DETALLE DE LA BÚSQUEDA