Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 393
Filtrar
2.
Nat Hum Behav ; 8(9): 1716-1725, 2024 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-38862815

RESUMEN

Mindfulness witnessed a substantial popularity surge in the past decade, especially as digitally self-administered interventions became available at relatively low costs. Yet, it is uncertain whether they effectively help reduce stress. In a preregistered (OSF https://doi.org/10.17605/OSF.IO/UF4JZ ; retrospective registration at ClinicalTrials.gov NCT06308744 ) multi-site study (nsites = 37, nparticipants = 2,239, 70.4% women, Mage = 22.4, s.d.age = 10.1, all fluent English speakers), we experimentally tested whether four single, standalone mindfulness exercises effectively reduced stress, using Bayesian mixed-effects models. All exercises proved to be more efficacious than the active control. We observed a mean difference of 0.27 (d = -0.56; 95% confidence interval, -0.43 to -0.69) between the control condition (M = 1.95, s.d. = 0.50) and the condition with the largest stress reduction (body scan: M = 1.68, s.d. = 0.46). Our findings suggest that mindfulness may be beneficial for reducing self-reported short-term stress for English speakers from higher-income countries.


Asunto(s)
Atención Plena , Estrés Psicológico , Humanos , Atención Plena/métodos , Femenino , Masculino , Adulto , Estrés Psicológico/terapia , Estrés Psicológico/prevención & control , Adulto Joven , Adolescente , Teorema de Bayes
3.
Space Sci Rev ; 219(5): 37, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-37448777

RESUMEN

We review comprehensive observations of electromagnetic ion cyclotron (EMIC) wave-driven energetic electron precipitation using data collected by the energetic electron detector on the Electron Losses and Fields InvestigatioN (ELFIN) mission, two polar-orbiting low-altitude spinning CubeSats, measuring 50-5000 keV electrons with good pitch-angle and energy resolution. EMIC wave-driven precipitation exhibits a distinct signature in energy-spectrograms of the precipitating-to-trapped flux ratio: peaks at >0.5 MeV which are abrupt (bursty) (lasting ∼17 s, or ΔL∼0.56) with significant substructure (occasionally down to sub-second timescale). We attribute the bursty nature of the precipitation to the spatial extent and structuredness of the wave field at the equator. Multiple ELFIN passes over the same MLT sector allow us to study the spatial and temporal evolution of the EMIC wave - electron interaction region. Case studies employing conjugate ground-based or equatorial observations of the EMIC waves reveal that the energy of moderate and strong precipitation at ELFIN approximately agrees with theoretical expectations for cyclotron resonant interactions in a cold plasma. Using multiple years of ELFIN data uniformly distributed in local time, we assemble a statistical database of ∼50 events of strong EMIC wave-driven precipitation. Most reside at L∼5-7 at dusk, while a smaller subset exists at L∼8-12 at post-midnight. The energies of the peak-precipitation ratio and of the half-peak precipitation ratio (our proxy for the minimum resonance energy) exhibit an L-shell dependence in good agreement with theoretical estimates based on prior statistical observations of EMIC wave power spectra. The precipitation ratio's spectral shape for the most intense events has an exponential falloff away from the peak (i.e., on either side of ∼1.45 MeV). It too agrees well with quasi-linear diffusion theory based on prior statistics of wave spectra. It should be noted though that this diffusive treatment likely includes effects from nonlinear resonant interactions (especially at high energies) and nonresonant effects from sharp wave packet edges (at low energies). Sub-MeV electron precipitation observed concurrently with strong EMIC wave-driven >1 MeV precipitation has a spectral shape that is consistent with efficient pitch-angle scattering down to ∼ 200-300 keV by much less intense higher frequency EMIC waves at dusk (where such waves are most frequent). At ∼100 keV, whistler-mode chorus may be implicated in concurrent precipitation. These results confirm the critical role of EMIC waves in driving relativistic electron losses. Nonlinear effects may abound and require further investigation.

4.
Clin Neuropsychol ; 36(3): 546-557, 2022 04.
Artículo en Inglés | MEDLINE | ID: mdl-34612169

RESUMEN

Over the past decades European societies have become increasingly diverse. This diversity in culture, education, and language significantly impacts neuropsychological assessment. Although several initiatives are under way to overcome these barriers - e.g. newly developed and validated test batteries - there is a need for more collaboration in the development and implementation of neuropsychological tests, such as in the domains of social cognition and language.To address these gaps in cross-cultural neuropsychological assessment in Europe, the European Consortium on Cross-Cultural Neuropsychology (ECCroN) was established in 2019.ECCroN recommends taking a broad range of variables into account, such as linguistic factors, literacy, education, migration history, acculturation and other cultural factors. We advocate against race-based norms as a solution to the challenging interpretation of group differences on neuropsychological tests, and instead support the development, validation, and standardization of more widely applicable/cross-culturally applicable tests that take into account interindividual variability. Last, ECCroN advocates for an improvement in the clinical training of neuropsychologists in culturally sensitive neuropsychological assessment, and the development and implementation of guidelines for interpreter-mediated neuropsychological assessment in diverse populations in Europe.ECCroN may impact research and clinical practice by contributing to existing theoretical frameworks and by improving the assessment of diverse individuals across Europe through collaborations on test development, collection of normative data, cross-cultural clinical training, and interpreter-mediated assessment.


Asunto(s)
Comparación Transcultural , Neuropsicología , Europa (Continente) , Humanos , Lenguaje , Pruebas Neuropsicológicas
5.
Sci Rep ; 11(1): 20292, 2021 10 13.
Artículo en Inglés | MEDLINE | ID: mdl-34645958

RESUMEN

Deoxygenation is a major threat to the coastal ocean health as it impacts marine life and key biogeochemical cycles. Understanding its drivers is crucial in the thriving and highly exploited Peru upwelling system, where naturally low-oxygenated subsurface waters form the so-called oxygen minimum zone (OMZ), and a slight vertical shift in its upper limit may have a huge impact. Here we investigate the long-term deoxygenation trends in the upper part of the nearshore OMZ off Peru over the period 1970-2008. We use a unique set of dissolved oxygen in situ observations and several high-resolution regional dynamical-biogeochemical coupled model simulations. Both observation and model present a nearshore deoxygenation above 150 m depth, with a maximum trend of - 10 µmol kg-1 decade1, and a shoaling of the oxycline depth (- 6.4 m decade-1). Model sensitivity analysis shows that the modeled oxycline depth presents a non-significant (+ 0.9 m decade-1) trend when remote forcing is suppressed, while a significant oxycline shoaling (- 3 m decade-1) is obtained when the wind variability is suppressed. This indicates that the nearshore deoxygenation can be attributed to the slowdown of the near-equatorial eastward currents, which transport oxygen-rich waters towards the Peruvian shores. The large uncertainties in the estimation of this ventilation flux and the consequences for more recent and future deoxygenation trends are discussed.

6.
Science ; 373(6554)2021 07 30.
Artículo en Inglés | MEDLINE | ID: mdl-34326210

RESUMEN

Aging is an established risk factor for vascular diseases, but vascular aging itself may contribute to the progressive deterioration of organ function. Here, we show in aged mice that vascular endothelial growth factor (VEGF) signaling insufficiency, which is caused by increased production of decoy receptors, may drive physiological aging across multiple organ systems. Increasing VEGF signaling prevented age-associated capillary loss, improved organ perfusion and function, and extended life span. Healthier aging was evidenced by favorable metabolism and body composition and amelioration of aging-associated pathologies including hepatic steatosis, sarcopenia, osteoporosis, "inflammaging" (age-related multiorgan chronic inflammation), and increased tumor burden. These results indicate that VEGF signaling insufficiency affects organ aging in mice and suggest that modulating this pathway may result in increased mammalian life span and improved overall health.


Asunto(s)
Envejecimiento/fisiología , Envejecimiento Saludable , Longevidad , Factor A de Crecimiento Endotelial Vascular/metabolismo , Tejido Adiposo , Animales , Vasos Sanguíneos/fisiología , Composición Corporal , Distribución de la Grasa Corporal , Metabolismo de los Hidratos de Carbono , Carcinogénesis , Endotelio Vascular/metabolismo , Hígado Graso/patología , Femenino , Inflamación/prevención & control , Hígado/patología , Masculino , Ratones , Densidad Microvascular , Microvasos/fisiología , Osteoporosis/prevención & control , Consumo de Oxígeno , Sarcopenia/prevención & control , Transducción de Señal , Factor A de Crecimiento Endotelial Vascular/sangre
7.
Int J Med Inform ; 147: 104374, 2021 03.
Artículo en Inglés | MEDLINE | ID: mdl-33422761

RESUMEN

BACKGROUND: Various studies have assessed the effectiveness of clinical pathways (CPs) in inpatient settings and provided systematic evidence that they positively affect patient outcomes and efficiency of care, thus lowering costs. In recent years, CP implementation is often combined or extended with clinical pathway software (CPS). Until now, no systematic literature review appears to exist which synthesizes the evidence on the effectiveness of CPS in inpatient settings, in relation to the CPs they support. OBJECTIVES: The purpose of this study was to systematically review evidence on (perceived) effectiveness of clinical pathway software (CPS) and investigate mechanisms explaining the effects of CPS implementation on outcomes. METHODS: We searched MEDLINE via PubMed and Scopus, for English-language original articles. Articles were included if they examined the effectiveness and/or the perceived effectiveness of CPS in the inpatient setting. They were analyzed for evidence on structure, process and outcome effects, as well as for mechanisms explaining such effects in relation to contextual factors. RESULTS: From 2904 articles, 12 studies met our inclusion criteria. The seven studies reporting on adherence provide conclusive evidence that CPSs can improve adherence. We also found conclusive evidence of improvement of process related measures regarding appropriate diagnostics, timeliness of care, and length of stay (LOS). Evidence on costs and outcomes is weak and/or less conclusive. This holds true both for patient outcomes (e.g. mortality/patient satisfaction) and caregiver outcomes (e.g. user satisfaction). The studies presented no direct evidence on mechanisms explaining how CPS relate to process and outcome improvements. CONCLUSIONS: The primary effects of CPS to increase adherence may in turn positively impact other process indicators such as LOS, timeliness of care, and diagnostic effectiveness. Subsequent effects on costs, outcomes for patients, physicians and nurses remain inconclusive and call for further research. Further research should explicitly take context into account. The scarce and weak evidence-base relating CPS implementation to process and outcome effects needs development along the same lines.


Asunto(s)
Vías Clínicas , Pacientes Internos , Humanos , Tiempo de Internación , Satisfacción del Paciente , Programas Informáticos
8.
Clin Oncol (R Coll Radiol) ; 32(3): 136-143, 2020 03.
Artículo en Inglés | MEDLINE | ID: mdl-32035580

RESUMEN

For much of the 1990s, transrectal ultrasound systematic biopsy was the standard approach for prostate cancer diagnosis. However, in the past decade multiparametric magnetic resonance imaging, multiparametric ultrasound and image fusion targeting have come to the fore. Here we present the state-of-the-art diagnostic strategies in prostate cancer detection and examine the case for target-only biopsy, as well as the benefits and limitations.


Asunto(s)
Biopsia Guiada por Imagen/métodos , Imagen por Resonancia Magnética/métodos , Imágenes de Resonancia Magnética Multiparamétrica/métodos , Neoplasias de la Próstata/diagnóstico , Neoplasias de la Próstata/cirugía , Anciano , Anciano de 80 o más Años , Humanos , Masculino , Neoplasias de la Próstata/patología
9.
Int J Med Inform ; 135: 104052, 2020 03.
Artículo en Inglés | MEDLINE | ID: mdl-31865190

RESUMEN

BACKGROUND: Clinical pathways (CPs) increase in popularity and are known to lead to several benefits in the hospital environment. Clinical pathways can be either paper-based or software-based. It is known that paper-based CPs can result in more paperwork instead of simplifying daily routines of healthcare workers. Insufficient research has been done on the acceptance of software-based CPs by different user groups. Our aim in this study was to assess the effectiveness of the software-based CPs (CPS) from the perspective of healthcare professionals in the hospital environment as well as to investigate the differences in perceived effectiveness between user groups. METHODS: Using surveys and interviews, data were collected in four departments of an academic medical center. A distinction was made between decision makers (DM) and executive staff (ES). The surveys contained questions based on the Technology Acceptance Model and four objectives of the software defined by the hospital. Statistical tests were used to investigate the effectiveness of CPS and study the differences between DM and ES. Interviews were recorded and transcribed based on grounded theory principals. RESULTS: After implementation, monitoring protocol-based working was significantly improved (p = .026) and significantly higher efficiency on the work floor was reported (p = .046). ES perceived the software as less useful than expected (Md = 3.25 vs. Md = 2.75, p = .028) compared to DM and were less convinced of its ability to improve monitoring protocol-based working. The most important benefits of CPS as perceived by its users are the better overview of tasks it provides and facilitating documentation. Negative aspects mentioned were the lack of usability and the inflexibility of the software, and particularly ES claimed that the software did not increase their effectiveness. CONCLUSION: Our study showed that CPS is effective from healthcare professionals' perspective due to its ability to increase monitoring of protocol-based working and by enhancing the efficiency on the work floor. However, the users also acknowledge that the software lacks usability and is not flexible enough, which results in an additional workload. Policy makers should be more focused on informing and training executive staff more thoroughly when implementing a CPS. Our results strongly suggest that executive staff members need to be convinced of its usefulness and the added value a CPS provides. Preferably, they should be involved in the design phase of the software.


Asunto(s)
Programas Informáticos , Estudios Controlados Antes y Después , Vías Clínicas , Toma de Decisiones , Personal de Salud , Humanos , Países Bajos , Encuestas y Cuestionarios
10.
Eur J Orthop Surg Traumatol ; 29(2): 479-485, 2019 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-30145669

RESUMEN

BACKGROUND: Chronic exertional compartment syndrome (CECS) is an overuse disorder typically affecting an athletic population. CECS is a diagnosis based on history and intracompartmental pressure (ICP) testing. CECS patients can be treated surgically by fasciotomy; however, research on the relationship between ICP and patient symptoms and also between ICP and patient-reported outcome post-fasciotomy is limited. This study aims to (1) assess functional outcome and patient satisfaction post-fasciotomy and (2) identify any potential correlation between ICP and reported levels of pain. METHODS: 138 CECS patients who had ICP measurements and subsequently underwent fasciotomy were identified from our regional service for exercise-induced lower limb extremity pain between January 2000 and March 2017. Clinical outcomes were recorded at the time of ICP testing and in the post-operative follow-up clinic. Pain was reported using a verbal rating scale (VRS) ('low', 'moderate' or 'high') or as a visual analogue score (VAS) 0-10 (0 = least painful, 10 = most painful). Spearman's ranked correlation test was used to calculate correlation between ICP and reported pain. RESULTS: A total of 138 patients were eligible for inclusion in this study (mean age 29.7 ± 9.7 years, 110 M, 28 F) of which 109 patients (VRS n = 61, VAS n = 48) reported pain level at pre- and post-operative stages. Mean pre-operative VAS score was 8.52 ± 0.71, and decreased to 0.77 ± 0.69 post-operatively. An insignificant positive correlation (r = 0.046, two-tailed p = 0.76) was found between VAS pain and ICP. A significant moderate positive correlation (r = 0.497, two-tailed p = 0.01) was found between VRS pain and ICP. CONCLUSION: Fasciotomy significantly reduces pain and increases activity levels in CECS patients. ICP was found to positively correlate with patient-reported pain.


Asunto(s)
Síndromes Compartimentales/cirugía , Fasciotomía , Dolor Musculoesquelético/cirugía , Presión/efectos adversos , Adulto , Síndromes Compartimentales/etiología , Trastornos de Traumas Acumulados/complicaciones , Femenino , Humanos , Pierna , Masculino , Dolor Musculoesquelético/etiología , Dimensión del Dolor , Satisfacción del Paciente , Recuperación de la Función , Estudios Retrospectivos , Resultado del Tratamiento , Adulto Joven
SELECCIÓN DE REFERENCIAS
DETALLE DE LA BÚSQUEDA