Publications by authors named "Cathy Chen"

Background: Randomized clinical trials demonstrated similar efficacy and improved safety of direct oral anticoagulants versus warfarin in patients with atrial fibrillation (AF). Long-term data in routine clinical practice are needed.

Hypothesis: Patients with AF receiving edoxaban at baseline continue to have low annualized effectiveness and safety event rates in the second year of follow-up, with regional variations observed.

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Article Synopsis
  • Edoxaban, a non-vitamin K oral anticoagulant, is approved for stroke prevention in atrial fibrillation (AF) patients in many Asian countries, but its long-term effectiveness and safety had limited data in Taiwan prior to this study.
  • The Global ETNA-AF registry analyzed two-year outcomes in Taiwan and three other Asian countries, revealing that edoxaban users in Taiwan were generally older with lower kidney function but showed comparable low rates of clinical events across regions.
  • The study concluded that despite some variations in patient characteristics, the low rates of cardiovascular death and major bleeding events indicate that edoxaban is effective and safe for routine clinical use among AF patients in Taiwan and other Asian countries.
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Background: Epistaxis is common with antithrombotic therapy and is often troublesome to patients, yet its frequency, severity, and outcomes are poorly characterized.

Methods And Results: Effective Anticoagulation with Factor Xa Next Generation in Atrial Fibrillation-Thrombolysis in Myocardial Infarction 48 (ENGAGE AF-TIMI 48) randomized 21 105 patients with atrial fibrillation and CHADS2 risk score ≥2 to higher-dose edoxaban regimen (60 mg daily, dose-reduced to 30 mg), lower-dose edoxaban regimen (30 mg, dose reduced to 15 mg, daily), or warfarin. Bleeds were adjudicated using International Society on Thrombosis and Haemostasis criteria.

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The explore/exploit tradeoff is a fundamental property of choice selection during reward-guided decision making. In perceptual decision making, higher certainty decisions are more motorically precise, even when the decision does not require motor accuracy. However, while we can parametrically control uncertainty in perceptual tasks, we do not know what variables - if any - shape motor precision and reflect subjective certainty during reward-guided decision making.

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As the representation of women in medicine has grown and reached parity in some specialties over the past two decades, radiology has not only lagged behind, but has remained stagnant. To strengthen the pipeline, the field must institute policies and practices to retain women in radiology and must effectively recruit and mentor women in medical school to enter the field. Women in medical school who are pursuing radiology, however, often struggle to find women mentors, opportunities for research, leadership, and service, and critically, often struggle to find a community that speaks to their experience.

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Article Synopsis
  • Dopamine (DA) and norepinephrine (NE) play distinct but overlapping roles in decision-making processes, particularly in the exploration-exploitation tradeoff, where individuals balance trying new options versus sticking with known rewards.
  • A study involving male and female mice used a two-armed bandit task to observe how various drugs affecting DA and NE influenced exploration behavior, revealing that increasing DA decreased exploration while decreasing DA had the opposite effect.
  • The findings indicate that DA and NE have different mechanisms in regulating exploration, with DA affecting decision noise and NE impacting sensitivity to outcomes, highlighting the complex interplay between these neuromodulators in decision-making.
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Article Synopsis
  • * The ENGAGE AF-TIMI 48 trial involved a global double-blind study with 2966 older participants, comparing two dosing regimens of edoxaban and warfarin, focusing on those without dose-reduction criteria.
  • * Key findings included a higher incidence of gastrointestinal hemorrhage associated with the 60 mg edoxaban dose, indicating the need for careful dose management in older patients on anticoagulants.
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Background: Decades of research have firmly established that cognitive health and cognitive treatment services are a key need for people living with psychosis. However, many current clinical programs do not address this need, despite the essential role that an individual's cognitive and social cognitive capacities play in determining their real-world functioning. Preliminary practice-based research in the Early Psychosis Intervention Network early psychosis intervention network shows that it is possible to develop and implement tools that delineate an individuals' cognitive health profile and that help engage the client and the clinician in shared decision-making and treatment planning that includes cognitive treatments.

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Essentially all neuropsychiatric diagnoses show some degree of sex and/or gender differences in their etiology, diagnosis, or prognosis. As a result, the roles of sex-related variables in behavior and cognition are of strong interest to many, with several lines of research showing effects on executive functions and value-based decision making in particular. These findings are often framed within a sex binary, with behavior of females described as less optimal than male "defaults"-- a framing that pits males and females against each other and deemphasizes the enormous overlap in fundamental neural mechanisms across sexes.

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Real-world data on effectiveness and safety of a single non-vitamin K antagonist oral anticoagulant in the Chinese population with atrial fibrillation (AF) are limited. This study reports characteristics of patients treated with edoxaban and factors associated with dosing patterns from routine care in China. ETNA-AF-China (NCT04747496) is a multicentre, prospective, observational study enrolling edoxaban-treated patients from four economic regions with a targeted 2-year follow-up.

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Primary care providers (PCPs) are expected to provide weight management counseling despite having low confidence in their ability to be effective. This analysis examined change in weight status between children who received usual care from their PCP and those who received one of two structured weight management programs in a randomized control trial. Data from parent-child dyads who were referred to the Guided Self-Help Obesity Treatment in the Doctor's Office study, but did not participate, were examined to determine change in weight status compared with those who participated in the trial.

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This research models and forecasts bounded ordinal time series data that can appear in various contexts, such as air quality index (AQI) levels, economic situations, and credit ratings. This class of time series data is characterized by being bounded and exhibiting a concentration of large probabilities on a few categories, such as states 0 and 1. We propose using Bayesian methods for modeling and forecasting in zero-one-inflated bounded Poisson autoregressive (ZOBPAR) models, which are specifically designed to capture the dynamic changes in such ordinal time series data.

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Background: Optimising periprocedural management of direct oral anticoagulation in patients with atrial fibrillation on chronic treatment undergoing major surgeries is an important aspect of balancing the risk of surgery-related bleeding with the risk of thromboembolic events, which may vary by surgery type.

Methods: This subanalysis of the prospective EMIT-AF/VTE programme assessed periprocedural-edoxaban management, according to physicians' decisions, and bleeding and thromboembolic event rates in patients who underwent major vs. nonmajor surgeries.

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  • Daprodustat is a medication for anemia in chronic kidney disease, approved in Japan and the U.S., and is studied for its metabolism in a clinical trial with 6 healthy male participants.
  • The study analyzed metabolites after administering daprodustat both intravenously and orally using advanced techniques like HPLC and mass spectrometry.
  • Results showed that the majority of the drug was metabolized and excreted, with the unchanged form being minimal in urine and feces, indicating that it is primarily cleared through metabolism in the liver and biliary system.
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ENVISAGE-TAVI AF (Edoxaban versus Standard of Care and Their Effects on Clinical Outcomes in Patients Having Undergone Transcatheter Aortic Valve Implantation-Atrial Fibrillation; NCT02943785) was a prospective, randomized, open-label trial comparing non-vitamin K oral anticoagulant (NOAC) edoxaban with vitamin K antagonists (VKAs) in patients with atrial fibrillation after successful transcatheter aortic valve replacement (TAVR). The effect of edoxaban- or VKA-based therapy on patient-reported outcomes remains unknown, as most studies focus on efficacy and safety. Pre-TAVR patient-reported expectations and post-TAVR Treatment Satisfaction and Convenience with edoxaban or VKA treatment (at months 3 and 12) were analyzed using the Perception of Anticoagulation Treatment Questionnaire (PACT-Q).

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Prevalent and incident atrial fibrillation are common in patients who undergo transcatheter aortic valve implantation and are associated with impaired postprocedural outcomes, including mortality. We determined predictors of long-term mortality in patients with atrial fibrillation after successful transcatheter aortic valve implantation. The EdoxabaN Versus standard of care and theIr effectS on clinical outcomes in pAtients havinG undergonE Transcatheter Aortic Valve Implantation-Atrial Fibrillation (ENVISAGE-TAVI AF) trial (NCT02943785) was a multicenter, prospective, randomized controlled trial in patients with prevalent or incident atrial fibrillation after successful transcatheter aortic valve implantation who received edoxaban or vitamin K antagonists.

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Patients treated with edoxaban may require diagnostic and therapeutic procedures that involve edoxaban interruption. Although heparin bridging strategies are not recommended, heparin is frequently used in clinical practice. However, whether heparin use decreases thromboembolic risk remains unclear, and the potential for increased periprocedural bleeding remains a concern.

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Introduction: Literature reviews support continuing anticoagulation during dental procedures. However, studies often present grouped anticoagulation data, and information on individual anticoagulant management would be helpful to dentists. The Edoxaban Management in Diagnostic and Therapeutic Procedures (EMIT-AF/VTE) programme (NCT02950168; NCT02951039) demonstrated low periprocedural bleeding and thrombotic event rates in patients with atrial fibrillation receiving edoxaban.

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Background: The neutrophil-to-lymphocyte ratio (NLR) is the ratio between neutrophil and lymphocyte counts measured in peripheral blood. NLR is easily calculable based on a routine blood test available worldwide and may reflect systemic inflammation. However, the relationship between NLR and clinical outcomes in atrial fibrillation (AF) patients is not well-described.

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Background: The risks of heart failure (HF) events compared with stroke/systemic embolic events (SEE) or major bleeding (MB) in heart failure with reduced ejection fraction (HFrEF) vs heart failure with preserved ejection fraction (HFpEF) in a large atrial fibrillation (AF) population have not been well-studied.

Objectives: This study sought to assess HF outcomes, according to HF history and HF phenotypes (HFrEF vs HFpEF), and compare these events with SEE and MB, among patients with AF.

Methods: We analyzed patients enrolled in the ENGAGE-AF TIMI 48 (Effective Anticoagulation with Factor Xa Next Generation in AF-Thrombolysis in Myocardial Infarction 48) trial.

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Non-recommended dosing occurs in ~25-50% of non-vitamin K antagonist oral anticoagulant prescriptions, with limited data for edoxaban. We analyzed edoxaban dosing patterns in atrial fibrillation patients from the Global ETNA-AF program, relating patterns to baseline characteristics and 1-year clinical outcomes. The following dosing groups were compared: non-recommended 60 mg ("overdosed") vs.

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Background: Stress is a major risk factor for depression, and both are associated with important changes in decision-making patterns. However, decades of research have only weakly connected physiological measurements of stress to the subjective experience of depression. Here, we examined the relationship between prolonged physiological stress, mood, and explore-exploit decision making in a population navigating a dynamic environment under stress: health care workers during the COVID-19 pandemic.

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Background: In the ENVISAGE-TAVI AF (Edoxaban vs Standard of Care and Their Effects on Clinical Outcomes in Patients Having Undergone Transcatheter Aortic Valve Implantation-Atrial Fibrillation) trial, edoxaban was noninferior to vitamin K antagonists (VKA) for a composite outcome of ischemic and bleeding complications but increased major bleeding in patients with atrial fibrillation after successful transcatheter aortic valve replacement. Women are at higher risk of bleeding and stroke than men after transcatheter aortic valve replacement. It is unclear whether the effect of edoxaban on these complications varies in relation to sex.

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The catecholamines dopamine (DA) and norepinephrine (NE) have been repeatedly implicated in neuropsychiatric vulnerability, in part via their roles in mediating the decision making processes. Although the two neuromodulators share a synthesis pathway and are co-activated under states of arousal, they engage in distinct circuits and roles in modulating neural activity across the brain. However, in the computational neuroscience literature, they have been assigned similar roles in modulating the latent cognitive processes of decision making, in particular the exploration-exploitation tradeoff.

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