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1.
Small ; 20(28): e2311055, 2024 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-38295001

RESUMEN

Through inducing interlayer anionic ligands and functionally modifying conductive carbon-skeleton on the transition metal chalcogenides (TMCs) parent to achieve atomic-level defect-manipulation and nanoscopic-level architecture design is of great significance, which can broaden interlayer distance, optimize electronic structure, and mitigate structural deformation to endow high-efficiency battery performance of TMCs. Herein, an intriguing 3D biconcave hollow-tyre-like anode constituted by carbon-packaged defective-rich SnSSe nanosheet grafting onto Aspergillus niger spores-derived hollow-carbon (ANDC@SnSSe@C) is reported. Systematically experimental investigations and theoretical analyses forcefully demonstrate the existence of anion Se ligand and outer-carbon all-around encapsulation on the ANDC@SnSSe@C can effectively yield abundant structural defects and Na+-reactivity sites, accelerate rapid ion migration, widen interlayer spacing, as well as relieve volume expansion, thus further resolving the critical issues throughout the charge-discharge processes. As anticipated, as-fabricated ANDC@SnSSe@C anode contributes extraordinary reversible capacity, wonderful cyclic lifespan with 83.4% capacity retention over 2000 cycles at 20.0 A g-1, and exceptional rate capability. A series of correlated kinetic investigations and ex situ characterizations deeply reveal the underlying springheads for the ion-transport kinetics, as well as synthetically elucidate phase-transformation mechanism of the ANDC@SnSSe@C. Furthermore, the ANDC@SnSSe@C-based sodium ion full cell and hybrid capacitor offer high-capacity contribution and remarkable energy-density output, indicative of its great practicability.

2.
Small ; : e2400141, 2024 Mar 03.
Artículo en Inglés | MEDLINE | ID: mdl-38431944

RESUMEN

Seawater electrolysis holds tremendous promise for the generation of green hydrogen (H2 ). However, the system of seawater-to-H2 faces significant hurdles, primarily due to the corrosive effects of chlorine compounds, which can cause severe anodic deterioration. Here, a nickel phosphide nanosheet array with amorphous NiMoO4 layer on Ni foam (Ni2 P@NiMoO4 /NF) is reported as a highly efficient and stable electrocatalyst for oxygen evolution reaction (OER) in alkaline seawater. Such Ni2 P@NiMoO4 /NF requires overpotentials of just 343 and 370 mV to achieve industrial-level current densities of 500 and 1000 mA cm-2 , respectively, surpassing that of Ni2 P/NF (470 and 555 mV). Furthermore, it maintains consistent electrolysis for over 500 h, a significant improvement compared to that of Ni2 P/NF (120 h) and Ni(OH)2 /NF (65 h). Electrochemical in situ Raman spectroscopy, stability testing, and chloride extraction analysis reveal that is situ formed MoO4 2- /PO4 3- from Ni2 P@NiMoO4 during the OER test to the electrode surface, thus effectively repelling Cl- and hindering the formation of harmful ClO- .

3.
Small ; 20(28): e2311431, 2024 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-38366284

RESUMEN

Renewable electricity-driven seawater splitting presents a green, effective, and promising strategy for building hydrogen (H2)-based energy systems (e.g., storing wind power as H2), especially in many coastal cities. The abundance of Cl- in seawater, however, will cause severe corrosion of anode catalyst during the seawater electrolysis, and thus affect the long-term stability of the catalyst. Herein, seawater oxidation performances of NiFe layered double hydroxides (LDH), a classic oxygen (O2) evolution material, can be boosted by employing tungstate (WO4 2-) as the intercalated guest. Notably, insertion of WO4 2- to LDH layers upgrades the reaction kinetics and selectivity, attaining higher current densities with ≈100% O2 generation efficiency in alkaline seawater. Moreover, after a 350 h test at 1000 mA cm-2, only trace active chlorine can be detected in the electrolyte. Additionally, O2 evolution follows lattice oxygen mechanism on NiFe LDH with intercalated WO4 2-.

4.
Artículo en Inglés | MEDLINE | ID: mdl-38724231

RESUMEN

BACKGROUND: Sleep fragmentation is a persistent problem throughout the course of Parkinson's disease (PD). However, the related neurophysiological patterns and the underlying mechanisms remained unclear. METHOD: We recorded subthalamic nucleus (STN) local field potentials (LFPs) using deep brain stimulation (DBS) with real-time wireless recording capacity from 13 patients with PD undergoing a one-night polysomnography recording, 1 month after DBS surgery before initial programming and when the patients were off-medication. The STN LFP features that characterised different sleep stages, correlated with arousal and sleep fragmentation index, and preceded stage transitions during N2 and REM sleep were analysed. RESULTS: Both beta and low gamma oscillations in non-rapid eye movement (NREM) sleep increased with the severity of sleep disturbance (arousal index (ArI)-betaNREM: r=0.9, p=0.0001, sleep fragmentation index (SFI)-betaNREM: r=0.6, p=0.0301; SFI-gammaNREM: r=0.6, p=0.0324). We next examined the low-to-high power ratio (LHPR), which was the power ratio of theta oscillations to beta and low gamma oscillations, and found it to be an indicator of sleep fragmentation (ArI-LHPRNREM: r=-0.8, p=0.0053; ArI-LHPRREM: r=-0.6, p=0.0373; SFI-LHPRNREM: r=-0.7, p=0.0204; SFI-LHPRREM: r=-0.6, p=0.0428). In addition, long beta bursts (>0.25 s) during NREM stage 2 were found preceding the completion of transition to stages with more cortical activities (towards Wake/N1/REM compared with towards N3 (p<0.01)) and negatively correlated with STN spindles, which were detected in STN LFPs with peak frequency distinguishable from long beta bursts (STN spindle: 11.5 Hz, STN long beta bursts: 23.8 Hz), in occupation during NREM sleep (ß=-0.24, p<0.001). CONCLUSION: Features of STN LFPs help explain neurophysiological mechanisms underlying sleep fragmentations in PD, which can inform new intervention for sleep dysfunction. TRIAL REGISTRATION NUMBER: NCT02937727.

5.
BMC Musculoskelet Disord ; 25(1): 517, 2024 Jul 05.
Artículo en Inglés | MEDLINE | ID: mdl-38970068

RESUMEN

BACKGROUND: Although previous studies have suggested a possible association between bone mineral density (BMD) and intervertebral disc degeneration (IDD), the causal relationship between them remains unclear. Evidence from accumulating studies indicates that they might mutually influence one another. However, observational studies may be affected by potential confounders. Meanwhile, Mendelian randomization (MR) study can overcome these confounders to assess causality. OBJECTIVES: This Mendelian randomization (MR) study aimed to explore the causal effect of bone mineral density (BMD) on intervertebral disc degeneration (IDD). METHODS: Summary data from genome-wide association studies of bone mineral density (BMD) and IDD (the FinnGen biobank) have been acquired. The inverse variance weighted (IVW) method was utilized as the primary MR analysis approach. Weighted median, MR-Egger regression, weighted mode, and simple mode were used as supplements. The Mendelian randomization pleiotropy residual sum and outlier (MR-PRESSO) and MR-Egger regression were performed to assess horizontal pleiotropy. Cochran's Q test evaluated heterogeneity. Leave-one-out sensitivity analysis was further conducted to determine the reliability of the causal relationship. Multivariate MR (MVMR) analyses used multivariable inverse variance-weighted methods to individually and jointly adjust for four potential confounders, body mass index (BMI), Type2 diabetes, hyperthyroidism and smoking. A reverse MR analysis was conducted to assess potential reverse causation. RESULTS: In the univariate MR analysis, femoral neck bone mineral density (FNBMD), heel bone mineral density (eBMD), lumbar spine bone mineral density (LSBMD), and total body bone mineral density (TB BMD) had a direct causal effect on intervertebral disc degeneration (IDD) [FNBMD-related analysis: OR(95%CI) = 1.17 (1.04 to 1.31), p = 0.008, eBMD-related analysis: OR(95%CI) = 1.06 (1.01 to 1.12), p = 0.028, LSBMD-related analysis: OR(95%CI) = 1.20 (1.10 to 1.31), p = 3.38E-7,TB BMD-related analysis: OR(95%CI) = 1.20 (1.12 to 1.29), p = 1.0E-8]. In the MVMR analysis, it was revealed that, even after controlling for confounding factors, heel bone mineral density (eBMD), lumbar spine bone mineral density (LSBMD), and total body bone mineral density (TB BMD) still maintained an independent and significant causal association with IDD(Adjusting for heel bone mineral density: beta = 0.073, OR95% CI = 1.08(1.02 to 1.14), P = 0.013; Adjusting for lumbar spine bone mineral density: beta = 0.11, OR(95%CI) = 1.12(1.02 to 1.23), P = 0.03; Adjusting for total body bone mineral density: beta = 0.139, OR95% CI = 1.15(1.06 to 1.24), P = 5.53E - 5). In the reverse analysis, no evidence was found to suggest that IDD has an impact on BMD. CONCLUSIONS: The findings from our univariate and multivariable Mendelian randomization analysis establish a substantial positive causal association between BMD and IDD, indicating that higher bone mineral density may be a significant risk factor for intervertebral disc degeneration. Notably, no causal effect of IDD on these four measures of bone mineral density was observed. Further research is required to elucidate the underlying mechanisms governing this causal relationship.


Asunto(s)
Densidad Ósea , Estudio de Asociación del Genoma Completo , Degeneración del Disco Intervertebral , Análisis de la Aleatorización Mendeliana , Humanos , Degeneración del Disco Intervertebral/genética , Degeneración del Disco Intervertebral/diagnóstico por imagen , Degeneración del Disco Intervertebral/epidemiología , Factores de Riesgo , Masculino , Femenino , Análisis Multivariante
6.
Ann Neurol ; 91(3): 353-366, 2022 03.
Artículo en Inglés | MEDLINE | ID: mdl-35023218

RESUMEN

OBJECTIVE: Accumulating evidence from invasive cortical stimulation mapping and noninvasive neuroimaging studies indicates that brain function may be preserved within brain tumors. However, a noninvasive approach to accurately and comprehensively delineate individual-specific functional networks in the whole brain, especially in brain tissues within and surrounding tumors, is still lacking. The purpose of the study is to develop a clinically useful technique that can map functional regions within tumoral brains. METHODS: We developed an individual-specific functional network parcellation approach using resting state functional magnetic resonance imaging (rsfMRI) that effectively captured functional networks within and nearby tumors in 20 patients. We examined the accuracy of the functional maps using invasive cortical stimulation and task response. RESULTS: We found that approximately 33.2% of the tumoral mass appeared to be functionally active and demonstrated robust functional connectivity with non-tumoral brain regions. Functional networks nearby tumors were validated by invasive cortical stimulation mapping. Intratumoral sensorimotor networks mapped by our technique could be distinguished by their distinct cortico-cerebellar connectivity patterns and were consistent with hand movement evoked fMRI task activations. Furthermore, in some patients, cognitive networks that were detected in the tumor mass showed long-distance and distributed functional connectivity. INTERPRETATION: Our noninvasive approach to mapping individual-specific functional networks using rsfMRI represents a promising new tool for identifying regions with preserved functional connectivity within and surrounding brain tumors, and could be used as a complement to presurgical planning for patients undergoing tumor resection surgery. ANN NEUROL 2022;91:353-366.


Asunto(s)
Neoplasias Encefálicas/diagnóstico por imagen , Encéfalo/diagnóstico por imagen , Glioma/diagnóstico por imagen , Red Nerviosa/diagnóstico por imagen , Adolescente , Adulto , Mapeo Encefálico , Femenino , Neuroimagen Funcional , Humanos , Imagen por Resonancia Magnética , Masculino , Persona de Mediana Edad , Adulto Joven
7.
Opt Express ; 31(3): 4080-4093, 2023 Jan 30.
Artículo en Inglés | MEDLINE | ID: mdl-36785384

RESUMEN

Severe icing of transmission lines causes power failures, tower collapses, and other adverse events, which hinders the normal operation of society. Existing icing monitoring methods have problems of irregular monitoring and poor accuracy. In this study, we propose a comprehensive model for predicting hard rime and glaze ice using temperature, humidity, and historical icing data. The results of the experimental verification conducted for nine icing cycles in different years and geographic locations demonstrate that the proposed technique can effectively predict multiple types of icing while ensuring correlation coefficients > 0.99 and mean squared error < 4%.

8.
Psychiatr Q ; 94(2): 103-111, 2023 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-36840898

RESUMEN

Integrated care pathways (ICPs) are evidence-based decision support tools intended to reduce variation and improve quality of care. Historically, adoption of ICPs has been difficult to measure, as the pathways were outside of the electronic health record (EHR), where care delivery documentation and orders were completed. This Technology Column describes the innovative development and implementation of a diagnosis specific electronic ICP that directly embeds pathway steps into an EHR to facilitate order sets, clinical decision-making, and usage tracking. The pathway was implemented at a seven-hospital academic medical center, and details the technology, team structure, early adoption results, and future directions. As such, the importance of investing and organizing resources to create an eICP (e.g., time, technology, and specialized teams) to provide a user-friendly experience to support early adoption is underscored. Preliminary findings show that the eICP had consistent use in the first year of implementation. This manuscript is intended to serve as a practical guide to build eICPs within behavioral health service areas across institutions.


Asunto(s)
Prestación Integrada de Atención de Salud , Psiquiatría , Humanos , Registros Electrónicos de Salud , Calidad de la Atención de Salud , Centros Médicos Académicos
9.
Inorg Chem ; 61(34): 13433-13441, 2022 Aug 29.
Artículo en Inglés | MEDLINE | ID: mdl-35983854

RESUMEN

The electrocatalytic oxidation of alcohols is a potentially cost-effective strategy for the synthesis of valuable chemicals at the anode while simultaneously generating hydrogen at the cathode. For this approach to become commercially viable, high-activity, low-cost, and stable catalysts need to be developed. Herein, we demonstrate an electrocatalyst based on earth-abundant nickel and sulfur elements. Experimental investigations reveal the produced NiS displays excellent electrocatalytic performance associated with a higher electrochemical surface area (ECSA) and the presence of sulfate ions on the formed NiOOH surface in basic media. The current densities reached for the oxidation of ethanol and methanol at 1.6 V vs reversible hydrogen electrode (RHE) are up to 175.5 and 145.1 mA cm-2, respectively. At these high current densities, the Faradaic efficiency of methanol to formate conversion is 98% and that of ethanol to acetate is 81%. Density functional theory calculations demonstrate the presence of the generated sulfate groups to modify the electronic properties of the NiOOH surface, improving electroconductivity and electron transfer. Besides, calculations are used to determine the reaction energy barriers, revealing the dehydrogenation of ethoxy groups to be more favorable than that of methoxy on the catalyst surface, which explains the highest current densities obtained for ethanol oxidation.

10.
Cereb Cortex ; 31(5): 2450-2465, 2021 03 31.
Artículo en Inglés | MEDLINE | ID: mdl-33350445

RESUMEN

Accumulating evidence shows that auditory cortex (AC) of humans, and other primates, is involved in more complex cognitive processes than feature segregation only, which are shaped by experience-dependent plasticity and thus likely show substantial individual variability. However, thus far, individual variability of ACs has been considered a methodological impediment rather than a phenomenon of theoretical importance. Here, we examined the variability of ACs using intrinsic functional connectivity patterns in humans and macaques. Our results demonstrate that in humans, interindividual variability is greater near the nonprimary than primary ACs, indicating that variability dramatically increases across the processing hierarchy. ACs are also more variable than comparable visual areas and show higher variability in the left than in the right hemisphere, which may be related to the left lateralization of auditory-related functions such as language. Intriguingly, remarkably similar modality differences and lateralization of variability were also observed in macaques. These connectivity-based findings are consistent with a confirmatory task-based functional magnetic resonance imaging analysis. The quantification of variability in auditory function, and the similar findings in both humans and macaques, will have strong implications for understanding the evolution of advanced auditory functions in humans.


Asunto(s)
Corteza Auditiva/diagnóstico por imagen , Vías Auditivas/diagnóstico por imagen , Variación Biológica Individual , Adulto , Animales , Corteza Auditiva/fisiología , Vías Auditivas/fisiología , Femenino , Neuroimagen Funcional , Humanos , Macaca mulatta , Imagen por Resonancia Magnética , Masculino , Adulto Joven
11.
Cereb Cortex ; 31(6): 2898-2912, 2021 05 10.
Artículo en Inglés | MEDLINE | ID: mdl-33497437

RESUMEN

The cerebellum, a structure historically associated with motor control, has more recently been implicated in several higher-order auditory-cognitive functions. However, the exact functional pathways that mediate cerebellar influences on auditory cortex (AC) remain unclear. Here, we sought to identify auditory cortico-cerebellar pathways based on intrinsic functional connectivity magnetic resonance imaging. In contrast to previous connectivity studies that principally consider the AC as a single functionally homogenous unit, we mapped the cerebellar connectivity across different parts of the AC. Our results reveal that auditory subareas demonstrating different levels of interindividual functional variability are functionally coupled with distinct cerebellar regions. Moreover, auditory and sensorimotor areas show divergent cortico-cerebellar connectivity patterns, although sensorimotor areas proximal to the AC are often functionally grouped with the AC in previous connectivity-based network analyses. Lastly, we found that the AC can be functionally segmented into highly similar subareas based on either cortico-cerebellar or cortico-cortical functional connectivity, suggesting the existence of multiple parallel auditory cortico-cerebellar circuits that involve different subareas of the AC. Overall, the present study revealed multiple auditory cortico-cerebellar pathways and provided a fine-grained map of AC subareas, indicative of the critical role of the cerebellum in auditory processing and multisensory integration.


Asunto(s)
Corteza Auditiva/diagnóstico por imagen , Vías Auditivas/diagnóstico por imagen , Mapeo Encefálico/métodos , Cerebelo/diagnóstico por imagen , Imagen por Resonancia Magnética/métodos , Red Nerviosa/diagnóstico por imagen , Adulto , Corteza Auditiva/fisiología , Vías Auditivas/fisiología , Cerebelo/fisiología , Bases de Datos Factuales , Femenino , Humanos , Masculino , Red Nerviosa/fisiología , Adulto Joven
12.
BMC Med Educ ; 22(1): 584, 2022 Jul 30.
Artículo en Inglés | MEDLINE | ID: mdl-35906583

RESUMEN

BACKGROUND: Health system science (HSS) encompasses both core and cross-cutting domains that emphasize the complex interplay of care delivery, finances, teamwork, and clinical practice that impact care quality and safety in health care. Although HSS skills are required during residency training for physicians, current HSS didactics have less emphasis on hands-on practice and experiential learning. Medical simulation can allow for experiential participation and reflection in a controlled environment. Our goal was to develop and pilot three simulation scenarios as part of an educational module for resident physicians that incorporated core and cross-cutting HSS domains.  METHODS: Each scenario included a brief didactic, an interactive simulation in small-group breakout rooms, and a structured debriefing. The case scenario topics consisted of educational leadership, quality and safety, and implementation science. Learners from four residency programs (psychiatry, emergency medicine, orthopedics, ophthalmology) participated January - March 2021. RESULTS: A total of 95 resident physicians received our curricular module, and nearly all (95%) participants who completed a post-session survey reported perceived learning gains. Emotional reactions to the session were positive especially regarding the interactive role-play format. Recommendations for improvement included participation from non-physician professions and tailoring of scenarios for specific disciplines/role. Knowledge transfer included use of multiple stakeholder perspectives and effective negotiation by considering power/social structures. CONCLUSIONS: The simulation-based scenarios can be feasibly applied for learner groups across different residency training programs. Simulations were conducted in a virtual learning environment, but future work can include in-person and actor-based simulations to further enhance emotional reactions and the reality of the case scenarios.


Asunto(s)
Medicina de Emergencia , Internado y Residencia , Médicos , Competencia Clínica , Curriculum , Medicina de Emergencia/educación , Humanos , Liderazgo
13.
Sensors (Basel) ; 22(3)2022 Feb 08.
Artículo en Inglés | MEDLINE | ID: mdl-35162014

RESUMEN

Acoustic manipulation of microparticles and cells has attracted growing interest in biomedical applications. In particular, the use of acoustic waves to concentrate particles plays an important role in enhancing the detection process by biosensors. Here, we demonstrated microparticle concentration within sessile droplets placed on the hydrophobic surface using the flexural wave. The design benefits from streaming flow induced by the Lamb wave propagated in the glass waveguide to manipulate particles in the droplets. Microparticles will be concentrated at the central area of the droplet adhesion plane based on the balance among the streaming drag force, gravity, and buoyancy at the operating frequency. We experimentally demonstrated the concentration of particles of various sizes and tumor cells. Using numerical simulation, we predicted the acoustic pressure and streaming flow pattern within the droplet and characterized the underlying physical mechanisms for particle motion. The design is more suitable for micron-sized particle preparation, and it can be valuable for various biological, chemical, and medical applications.


Asunto(s)
Acústica , Sonido , Simulación por Computador , Fenómenos Mecánicos , Movimiento (Física)
14.
Ann Neurol ; 88(6): 1178-1193, 2020 12.
Artículo en Inglés | MEDLINE | ID: mdl-32951262

RESUMEN

OBJECTIVE: Current understanding of the neuromodulatory effects of deep brain stimulation (DBS) on large-scale brain networks remains elusive, largely due to the lack of techniques that can reveal DBS-induced activity at the whole-brain level. Using a novel 3T magnetic resonance imaging (MRI)-compatible stimulator, we investigated whole-brain effects of subthalamic nucleus (STN) stimulation in patients with Parkinson disease. METHODS: Fourteen patients received STN-DBS treatment and participated in a block-design functional MRI (fMRI) experiment, wherein stimulations were delivered during "ON" blocks interleaved with "OFF" blocks. fMRI responses to low-frequency (60Hz) and high-frequency(130Hz) STN-DBS were measured 1, 3, 6, and 12 months postsurgery. To ensure reliability, multiple runs (48 minutes) of fMRI data were acquired at each postsurgical visit. Presurgical resting-state fMRI (30 minutes) data were also acquired. RESULTS: Two neurocircuits showed highly replicable, but distinct responses to STN-DBS. A circuit involving the globus pallidus internus (GPi), thalamus, and deep cerebellar nuclei was significantly activated, whereas another circuit involving the primary motor cortex (M1), putamen, and cerebellum showed DBS-induced deactivation. These 2 circuits were dissociable in terms of their DBS-induced responses and resting-state functional connectivity. The GPi circuit was frequency-dependent, selectively responding to high-frequency stimulation, whereas the M1 circuit was responsive in a time-dependent manner, showing enhanced deactivation over time. Finally, activation of the GPi circuit was associated with overall motor improvement, whereas M1 circuit deactivation was related to reduced bradykinesia. INTERPRETATION: Concurrent DBS-fMRI using 3T revealed 2 distinct circuits that responded differentially to STN-DBS and were related to divergent symptoms, a finding that may provide novel insights into the neural mechanisms underlying DBS. ANN NEUROL 2020;88:1178-1193.


Asunto(s)
Núcleos Cerebelosos/fisiología , Cerebelo/fisiología , Globo Pálido/fisiología , Corteza Motora/fisiología , Enfermedad de Parkinson/fisiopatología , Putamen/fisiología , Tálamo/fisiología , Estimulación Encefálica Profunda , Femenino , Humanos , Imagen por Resonancia Magnética , Masculino , Persona de Mediana Edad , Vías Nerviosas/fisiología , Núcleo Subtalámico/fisiología
15.
Opt Express ; 29(19): 30483-30493, 2021 Sep 13.
Artículo en Inglés | MEDLINE | ID: mdl-34614771

RESUMEN

A novel monitoring method based on fiber Bragg grating sensor for detecting the ice coating on power transmission lines is proposed and demonstrated in this study. Sensors are installed on transmission line towers to monitor micrometeorological information and machine learning algorithms based on Gaussian processes use the real-time monitoring results to predict the ice thickness on the lines. The experimental results prove that the mean squared error and mean absolute percentage error values between the predicted and actual values are both less than 1%. This is the first time that only micrometeorological information has been used to monitor ice thickness.

16.
Neuromodulation ; 24(3): 441-447, 2021 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-33751731

RESUMEN

OBJECTIVES: Due to the impact of COVID-19 epidemic, face-to-face follow-up treatments for patients with chronic pain and implanted spinal cord stimulation (SCS) devices are forced to be delayed or stopped. This has led to more follow ups being done remotely. Meanwhile, with the development of 4G/5G networks, smartphones, and novel devices, remote programming has become possible. Here, we investigated the demand and utility of remote follow-ups including remote programming for SCS for patients with chronic pain. MATERIALS AND METHODS: A questionnaire including questions on demographic characteristics, pain history, postimplantation life quality, standard follow-up experience, remote follow-up, and remote programming experience was sent to patients diagnosed as chronic intractable pain and treated with SCS during January 2019 to January 2020. RESULTS: A total of 64 participants completed the questionnaire. About 70% of participants expressed demands for remote follow-ups due to the inconvenience, high costs, and time consumption of traditional follow-up visits. Nearly 97% of participants have attempted remote follow-ups, and about 81% of participants have further tried remote programming. Approximately, 96% of them recognized the benefits. CONCLUSIONS: The remote programming was in high demand among participants. Most of the participants have tried remote follow-ups or even remote programming. The remote programming appeared to be more efficient, economic and were widely recognized among participants.


Asunto(s)
COVID-19/prevención & control , Dolor Crónico/terapia , Brotes de Enfermedades/prevención & control , Neuroestimuladores Implantables , Tecnología de Sensores Remotos/métodos , Estimulación de la Médula Espinal/métodos , Adulto , COVID-19/epidemiología , China/epidemiología , Dolor Crónico/epidemiología , Femenino , Estudios de Seguimiento , Humanos , Masculino , Persona de Mediana Edad , Dimensión del Dolor/métodos
17.
Neuromodulation ; 24(2): 220-228, 2021 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-32886865

RESUMEN

OBJECTIVE: Subthalamic deep brain stimulation (STN-DBS) could be an effective alternative treatment for patients with Parkinson's disease (PD). However, the mechanisms of deep brain stimulation (DBS) at different frequencies are still unclear. In this study, diffusion tensor imaging (DTI) was used to detect parameter changes in different regions of rat brains after DBS, and rat exercise capacity and brain tissue immunohistochemistry were evaluated. MATERIALS AND METHODS: The 6-hydroxydopamine-induced hemi-parkinsonian rat models were made and divided into four groups: a control group, sham group, low-frequency group, and high-frequency group. Low-frequency (30 Hz) and high-frequency (130 Hz) DBS were given to the STN in rats. First, an open-field experiment was used to evaluate changes in exercise performance. Then, the DTI was used to measure parameter changes in the substantia nigra (SN). Finally, immunohistochemistry was used to analyze the expression of tyrosine hydroxylase (TH), NeuN, and α-synuclein (α-syn) in the SN in the rats. RESULTS: There were significant differences in movement distance changes between the high-frequency stimulation (HFS) group and low-frequency stimulation (LFS) group, the HFS group and Ctrl group, and the Sham group and Ctrl group (all p < 0.05) after one week of stimulation. In the HFS group, the fractional anisotropy value of the SN was significantly higher than that of the other groups (p < 0.05), and the apparent diffusion coefficient and radial diffusion coefficient values were significantly lower than those of the other groups (p < 0.01). Immunohistochemical analysis showed that the integral optical density values of SN TH staining (p < 0.01) and NeuN staining (p < 0.05) in the HFS group were both significantly higher than those in the other groups. CONCLUSION: STN-HFS (130 Hz) and sham operation for one week can significantly improve the exercise performance of PD rats. The exercise performance of PD rats in LFS group (30 Hz) is worse compared with HFS group (130 Hz). HFS plays a role in neuroprotection and improvement of exercise performance of PD rats. Moreover, DTI can be used as an effective technique to assess the therapeutic effects and severity of PD.


Asunto(s)
Estimulación Encefálica Profunda , Enfermedad de Parkinson , Núcleo Subtalámico , Animales , Imagen de Difusión Tensora , Humanos , Oxidopamina/toxicidad , Enfermedad de Parkinson/terapia , Ratas
18.
Telemed J E Health ; 27(8): 835-842, 2021 08.
Artículo en Inglés | MEDLINE | ID: mdl-33999738

RESUMEN

Introduction: The COVID-19 pandemic accelerated telehealth to deliver psychiatric services. Continuation of psychiatric services for individuals with high clinical acuity was critical. This study examined attendance to rapidly deployed telehealth services for psychiatrically high-risk individuals receiving intensive outpatient program (IOP), primarily group-based psychotherapy services for adults and adolescents by race/ethnicity, insurance, and clinical treatment program within a large hospital-based outpatient psychiatric setting. Methods: Chi-square tests compared whether attendance rates for telehealth versus in-person IOP services varied by population group, race, insurance, and clinical program, using observational data of adolescent and adult patients treated between October 1, 2019, and July 31, 2020. Results: Appointment attendance increased for telehealth versus in-person services for adolescents (χ2 (df = 1) = 27.49, p < 0.0001) and adults (χ2 (df = 1) = 434.37, p < 0.0001). For adults, increased appointment attendance for telehealth was observed across insurance type (Medicaid: +11.5%; Medicare: +13.79%; Commercial: +6.94%), race/ethnicity (+6.23% to +15.76% across groups), and for IOP groups across all five diagnostic treatment programs (between 7.59% and 15.9% increases across groups). Adolescent results were mixed; increased appointment attendance for telehealth was observed among commercially insured youth (+7.11%), but no differences were observed for Medicaid-insured youth. Non-Hispanic white youth had increased attendance for telehealth (+8.38%) and no differences were observed for non-Hispanic black youth. Decreases were found in telehealth attendance for Hispanic/Latinx youth (-13.49%). Discussion: Rapidly deployed telehealth increased attendance to intensive services for psychiatrically high-risk individuals, particularly among adults and for adolescents with commercial insurance and non-Hispanic white youth. Trends among racial/ethnic and Medicaid-insured youth warrant further investigation regarding the potential for special challenges or vulnerabilities and advocacy needs. Findings highlight telehealth as an important tool in supporting availability of services for individuals with high levels of psychiatric acuity, particularly for group-based services, during the pandemic.


Asunto(s)
COVID-19 , Telemedicina , Adolescente , Adulto , Anciano , Atención Ambulatoria , Hospitales , Humanos , Medicare , Pandemias , SARS-CoV-2 , Estados Unidos
19.
Psychiatr Q ; 92(3): 1079-1092, 2021 09.
Artículo en Inglés | MEDLINE | ID: mdl-33575954

RESUMEN

While COVID-19 has had widespread impact on the way behavioral health services are delivered, very little research exists characterizing how providers have perceived these changes. This study used mixed-methods to understand the complex and varied experiences of staff of a psychiatric service line at a large tertiary medical center with high community spread of COVID-19. A brief convenience survey was sent to all staff of the service line and thematic analysis generated brief themes and their frequency. Qualitative focus groups were then held to elucidate greater detail on survey responses. In total, 99 individuals responded to the survey and 17 individuals attended two focus groups in which theoretical saturation was achieved. While brief survey responses generated three broad themes, including operations, telehealth and technology, and communication, focus group data provided nuanced information about these themes, including reasons underlying heightened stress and fatigue felt by staff, inadequacy of technology while finding innovative approaches for its use, and appreciation for the benefits of telehealth while expressing concern for patients not served well by it. These mixed-methods findings highlight the complexities of implementing widespread changes during COVID-19 and demonstrate how survey and focus group data can be used to evaluate rapid care transformations driven by COVID-19.


Asunto(s)
Actitud del Personal de Salud , COVID-19 , Encuestas de Atención de la Salud , Personal de Salud/psicología , Servicios de Salud Mental , Telemedicina , Adulto , Anciano , COVID-19/epidemiología , Femenino , Grupos Focales , Humanos , Masculino , Persona de Mediana Edad , SARS-CoV-2 , Centros de Atención Terciaria
20.
Acad Psychiatry ; 45(1): 13-22, 2021 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-33495966

RESUMEN

OBJECTIVE: Quality improvement (QI) tools can identify and address health disparities. This paper describes the use of resident prescriber profiles in a novel QI curriculum to identify racial and ethnic differences in antidepressant and antipsychotic prescribing. METHODS: The authors extracted medication orders written by 111 psychiatry residents over an 18-month period from an electronic medical record and reformatted these into 6133 unique patient encounters. Binomial logistic models adjusted for covariates assessed racial and ethnic differences in antipsychotic or antidepressant prescribing in both emergency and inpatient psychiatric encounters. A multinomial model adjusted for covariates then assessed racial and ethnic differences in primary diagnosis. Models also examined interactions between gender and race/ethnicity. RESULTS: Black (adjusted OR 0.66; 95% CI, 0.50-0.87; p < 0.01) and Latinx (adjusted OR, 0.65; 95% CI, 0.49-0.86; p < 0.01) patients had lower odds of receiving antidepressants relative to White patients despite diagnosis. Black and Latinx patients were no more likely to receive antipsychotics than White patients when adjusted for diagnosis. Black (adjusted OR 3.85; 95% CI, 2.9-5.2) and Latinx (adjusted OR 1.60; 95% CI, 1.1-2.3) patients were more likely to receive a psychosis than a depression diagnosis when compared to White patients. Gender interactions with race/ethnicity did not significantly change results. CONCLUSIONS: Our findings suggest that racial/ethnic differences in antidepressant prescription likely result from alternatively higher diagnosis of psychotic disorders and prescription of antipsychotics in Black and Latinx patients. Prescriber profiles can serve as a powerful tool to promote resident QI learning around the effects of structural racism on clinical care.


Asunto(s)
Equidad en Salud , Psiquiatría , Negro o Afroamericano , Etnicidad , Disparidades en Atención de Salud , Humanos , Mejoramiento de la Calidad , Estados Unidos
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