218 results match your criteria: "Georgetown University Washington[Affiliation]"

Emergency physicians are well-positioned to take a leadership role in telehealth, particularly in emerging categories such as triage, direct acute unscheduled care, and virtual observation. However, the growth of telehealth has outpaced curricular development in emergency medicine (EM) residency programs. This manuscript presents a model longitudinal telehealth curriculum, developed by the consensus of education experts, including representatives from the telehealth interest groups from EM's two primary specialty societies: the American College of Emergency Physicians and the Society for Academic Emergency Medicine.

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Aims: This study aims to evaluate the current state of endoscopy services in Pacific Island Countries (PICs) by quantifying human and material resources, including the number of trained endoscopists and nurses, the types of procedures performed, and the availability and maintenance of endoscopic equipment.

Methods And Results: A mixed methods survey was conducted in 2023, targeting doctors and nurses who participated in the WGO-FNU-ANZGITA endoscopy training program as well as non-participants. Survey invitations were sent through email, WhatsApp, and Facebook Messenger.

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The prenyl group is present in numerous biologically active small molecule drugs and natural products. We introduce benzylic C-H alkenylation of substrates Ar-CH with alkenylboronic esters (CH)OB-CH[double bond, length as m-dash]CMe as a pathway to form prenyl functionalized arenes Ar-CHCH[double bond, length as m-dash]CMe. Mechanistic studies of this radical relay catalytic protocol reveal diverse reactivity pathways exhibited by the copper(ii) alkenyl intermediate [Cu]-CH[double bond, length as m-dash]CMe that involve radical capture, bimolecular C-C bond formation, and hydrogen atom transfer (HAT).

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Background: Lack of sexual orientation and gender identity (SOGI) data creates barriers for lesbian, gay, bisexual, transgender, and queer (LGBTQ+) people in health care. Barriers to SOGI data collection include physician misperception that patients do not want to answer these questions and discomfort asking SOGI questions. This study aimed to assess patient comfort towards SOGI questions across five quaternary care adult congenital heart disease (ACHD) centres.

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Article Synopsis
  • Rapid advancements in catheter-based electrophysiology procedures have become common, raising concerns about patient safety amidst the growing number of these procedures.
  • A meta-analysis of 174 studies with nearly 44,000 patients found that serious complications from these procedures have decreased between 2000-2018 and 2019-2023, including lower rates of procedure-related strokes and deaths.
  • However, vascular complications showed no significant change over the same time periods, indicating some areas still require attention in terms of patient safety.
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Multifocal ectopic Purkinje-related premature contractions are a unique electrophysiological finding that can be characteristic of a rare sodium channelopathy. We describe the medical management of this rare channelopathy in a patient who was pregnant.

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Pyrazinacenes are next generation N-heteroacenes and represent a novel class of stable n-type materials capable of accepting more than one electron and displaying intriguing features, including prototropism, halochromism, and redox chromism. Astonishingly, despite a century since their discovery, there have been no reports on the conjugated polymers of pyrazinacenes due to unknown substrate scope and lack of pyrazinacene monomers that are conducive to condensation polymerization. Breaking through these challenges, in this work, we report the synthesis of previously undiscovered and highly coveted conjugated polymers of pyrazinacenes.

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Background: Although holmium laser enucleation (HoLEP) is considered a size-independent procedure for treatment of an enlarged prostate, prostate artery embolization (PAE) is emerging as an alternative modality to treat moderate and large benign prostatic hyperplasia. This study aims to compare the early post-operative and short-term efficacy of PAE and HoLEP.

Methods: PubMed, Cochrane Library and EMBASE databases were searched.

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California's Channel Islands are home to two endemic mammalian carnivores: island foxes () and island spotted skunks (). Although it is rare for two insular terrestrial carnivores to coexist, these known competitors persist on both Santa Cruz Island and Santa Rosa Island. We hypothesized that examination of their gut microbial communities would provide insight into the factors that enable this coexistence, as microbial symbionts often reflect host evolutionary history and contemporary ecology.

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Mineral licks are key ecological components of the Amazon rainforest, providing critical dietary functions for herbivorous and frugivorous mammals and birds, which help maintain the structure and function of the forest itself through seed and nutrient dispersal. One of the most frequent visitors of interior forest mineral licks in the Amazon is the red brocket deer (), a large-bodied ruminant frugivore and seed predator. While several hypotheses for the drivers of geophagy exist, including mineral supplementation, toxin adsorption, and habitat selection, robust data on geophagy for the red brocket deer for large numbers of mineral licks is nonexistent.

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We recently developed Riboglow-FLIM, where we genetically tag and track RNA molecules in live cells through measuring the fluorescence lifetime of a small molecule probe that binds the RNA tag. Here, we systematically and quantitatively evaluated key elements of Riboglow-FLIM that may serve as the foundation for Riboglow-FLIM applications and further tool development efforts. Our investigation focused on measuring changes in fluorescence lifetime of representative Riboglow-FLIM probes with different linkers and fluorophores in different environments.

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Article Synopsis
  • Environmental variation affects reproductive success in black-footed ferrets, both in human care and the wild, but the underlying mechanisms are not well understood.
  • The study explored DNA methylation as a key epigenetic factor influencing reproductive health, finding significant differences in sperm quality between ferrets in ex situ facilities and those in the wild
  • Results indicate that DNA methylation may regulate reproductive traits, highlighting its potential role in the fertility issues faced by male black-footed ferrets in managed care.
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The analysis of mixtures of chiral compounds is a common task in academic and industrial laboratories typically achieved by laborious and time-consuming physical separation of the individual stereoisomers to allow interference-free quantification, for example using chiral chromatography coupled with UV detection. Current practice thus impedes high-throughput and slows down progress in countless chiral compound development projects. Here we describe a chemometric solution to this problem using a redox-responsive naphthoquinone that enables chromatography-free click chemistry sensing of challenging mixtures.

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Article Synopsis
  • * The strategies simulated include usual care, intensive care targeting lower blood pressure, and team-based care, indicating varying levels of effectiveness in reducing CVD events.
  • * While intensive care could prevent up to 138,100 cardiovascular events annually, it is also associated with a significant increase in serious treatment-related adverse events, raising concerns about safety.
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Introduction: Traditional Alzheimer's disease (AD) and mild cognitive impairment (MCI) screening lacks the sensitivity and timeliness required to detect subtle indicators of cognitive decline. Multimodal artificial intelligence technologies using only speech data promise improved detection of neurodegenerative disorders.

Methods: Speech collected over the telephone from 91 older participants who were cognitively healthy ( = 29) or had diagnoses of AD ( = 30) or amnestic MCI (aMCI;  = 32) was analyzed with multimodal natural language and speech processing methods.

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Article Synopsis
  • The REDUCE-IT USA trial found that icosapent ethyl (IPE) significantly reduced cardiovascular events by 31% and 36% over approximately 4.9 years.
  • An analysis of the cost-effectiveness of IPE compared to standard care (SC) showed that IPE was less expensive and provided better health outcomes, particularly at a daily cost of $4.59.
  • Overall, IPE is recommended for U.S. patients similar to those in the trial, as it remains cost-effective even at a higher daily cost of $11.48.
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Background: Bleeding events are associated with higher mortality rates in patients with cardiovascular diseases, including patients presenting with acute coronary syndrome (ACS) undergoing coronary revascularization. We aimed to determine whether a reduction in hemoglobin (Hgb) from pre- to postpercutaneous coronary intervention (PCI), with or without evidence of clinical bleeding, is a correlate of in-hospital mortality for patients presenting with ACS who underwent primary PCI.

Methods: We divided 33816 consecutive patients with ACS who underwent PCI into three categories: (1) target group (defined as Hgb reduction without overt bleeding [n = 112]); (2) Hgb reduction with overt bleeding (n = 48); and (3) control group (defined as no Hgb reduction and no overt bleeding [n = 3156]).

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Intussusception is the telescoping or invagination of the proximal part of the gastrointestinal tract into an adjacent section. It is rare in adults, accounting for 1% of adult bowel obstruction. Adult presentation of intussusception is variable, with nonspecific, vague symptoms like abdominal pain, nausea, vomiting, and rectal bleeding.

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Purpose: Explore gender disparities in patients undergoing transseptal puncture (TSP) for selected transcatheter cardiac intervention procedures.

Methods: Patients who underwent TSP from January 2015 through September 2021 were reviewed. Primary outcomes were procedural and in-hospital major adverse events.

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Controlling network growth and architecture of 3D-conjugated porous polymers (CPPs) is challenging and therefore has limited the ability to systematically tune the network architecture and study its impact on doping efficiency and conductivity. We have proposed that π-face masking straps mask the π-face of the polymer backbone and therefore help to control π-π interchain interactions in higher dimensional π-conjugated materials unlike the conventional linear alkyl pendant solubilizing chains that are incapable of masking the π-face. Herein, we used cycloaraliphane-based π-face masking strapped monomers and show that the strapped repeat units, unlike the conventional monomers, help to overcome the strong interchain π-π interactions, extend network residence time, tune network growth, and increase chemical doping and conductivity in 3D-conjugated porous polymers.

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