Publications by authors named "Yichen Lai"

Objective: Previous studies have shown that the incidence of peptic ulcer disease (PUD) exhibits seasonal variations. This study aimed to investigate the seasonal variation in PUD incidence in Taiwan, which spans both tropical and subtropical regions, using a nationwide database.

Methods: A cross-sectional study was conducted using real-world claims data from Taiwan, which includes a representative sample of 2 million individuals.

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Objective: Postpartum depression (PPD) is a major mental health issue affecting 10%-15% of women globally. This meta-analysis synthesized updated evidence on sub-anesthetic ketamine/esketamine's efficacy in preventing PPD.

Methods: Randomized controlled trials (RCTs) comparing ketamine/esketamine to a placebo for PPD prevention were searched without language restriction.

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Purpose: Evaluate the relationship between first and second-line medication dosing and progression to refractory status epilepticus (RSE) in children.

Methods: This is a retrospective analysis of prospectively collected data from September 2014 to February 2020 of children with status epilepticus (SE) who received at least two antiseizure medications (ASMs). We evaluated the risk of developing RSE after receiving a low total benzodiazepine dose (lower than 100 % of the minimum recommended dose for each benzodiazepine dose administered within 10 min) and a low first non-benzodiazepine ASM dose (lower than 100 % of the minimum recommended dose of non-benzodiazepine ASM given as the first single-dose) using a logistic regression model, adjusting for confounders such as time to ASMs.

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Objective: We sought to examine the effects of acute seizures and respiratory derangement on the cardiac electrical properties reflected on the electrocardiogram (ECG); and to analyze their potential interactions with a diagnosis of epilepsy in children.

Methods: Emergency center (EC) visits with seizure or epilepsy diagnostic codes from 1/2011-12/2013 were included if they had ECG within 24 h of EC visit. Patients were excluded if they had pre-existing cardiac conditions, ion channelopathy, or were taking specific cardiac medications.

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Article Synopsis
  • New-onset refractory status epilepticus (NORSE) is a serious condition that can cause significant disability, often not responding well to standard treatments.
  • An 11-year-old girl with anti-GAD 65 encephalitis who experienced NORSE showed minimal improvement with regular anti-seizure medications and first-line therapies.
  • After receiving intrathecal dexamethasone (IT-DEX) along with rituximab, her neuroinflammation decreased, seizure frequency dropped, and she could reduce anesthesia, suggesting IT-DEX could be beneficial early on for various causes of refractory status epilepticus.
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The literature on the nutritional needs and outcomes of critically ill children is scarce, especially on those with critical neurological illnesses (CNIs). Current evidence shows a lower mortality in patients who achieve two-thirds of their nutritional needs during the first week of pediatric intensive care unit (PICU) admission. We hypothesized that achieving 60% of the recommended dietary intake during the first week of a PICU stay is not feasible in patients with CNI.

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Managing children with critical neurological conditions requires a comprehensive understanding of several principles of critical care. Providing a holistic approach that addresses not only the acute interactions between the brain and different organ systems, but also critical illness-associated complications and recovery is essential for improving outcomes in these patients. The brain reacts to an insult with autonomic responses designed to optimize cardiac output and perfusion, which can paradoxically be detrimental.

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Purpose: Cardiac abnormalities resulting from chronic epilepsy ("the epileptic heart") constitute a well-recognized comorbidity. However, the association of cardiac alterations with epilepsy duration remains understudied. We sought to evaluate this association using electrocardiogram (ECG).

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We aimed to evaluate the association between systemic sclerosis (SSc) and major cerebrovascular/cardiovascular risks through a systematic approach. Databases were systematically searched from their inception to October 10, 2023 for studies comparing cerebrovascular/cardiovascular event rates between patients with SSc and controls. The primary outcome was the stroke risk in patients with SSc.

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One of the very fundamental attributes for telencephalic neural computation in mammals involves network activities oscillating beyond the initial trigger. The continuing and automated processing of transient inputs shall constitute the basis of cognition and intelligence but may lead to neuropsychiatric disorders such as epileptic seizures if carried so far as to engross part of or the whole telencephalic system. From a conventional view of the basic design of the telencephalic local circuitry, the GABAergic interneurons (INs) and glutamatergic pyramidal neurons (PNs) make negative feedback loops which would regulate the neural activities back to the original state.

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Introduction: This study aimed to investigate the determinants of cancer incidence and mortality in patients with vitamin D deficiency using a real-world population database.

Methods: We utilized the International Diagnostic Classification Code (ICD9:268 / ICD10: E55) to define patients with vitamin D deficiency. Additionally, the Cox regression model was used to estimate overall mortality and identify potential factors contributing to mortality in cancer patients.

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Article Synopsis
  • Postoperative ileus (POI) can happen after surgeries, but intravenous dexmedetomidine (Dex) may help speed up recovery of gastrointestinal function.
  • A review of 22 trials with 2566 patients found that Dex significantly reduced the time to first flatus, oral intake, and defecation, as well as the length of hospital stay, without causing other complications.
  • The results support using Dex in noncardiac surgeries, though its benefits were not seen in studies outside of China.
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Background: The use of multimodal neuromonitoring in pediatrics is in its infancy relative to adult neurocritical care. Multimodal neuromonitoring encompasses the amalgamation of information from multiple individual neuromonitoring devices to gain a more comprehensive understanding of the condition of the brain. It allows for adaptation to the changing state of the brain throughout various stages of injury with potential to individualize and optimize therapies.

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Background: We describe a cohort of children with severe myelin oligodendrocyte glycoprotein (MOG)-IgG-associated cerebral cortical encephalitis (CCE), manifesting with bilateral cortical cytotoxic edema and critical neurological illness.

Methods: We retrospectively reviewed our pediatric MOG antibody-associated disease (MOGAD) database and identified patients with specific radiographic pattern of bilateral, multifocal cortical cytotoxic lesions. We collected demographic, clinical, and outcomes data from these patients and compared select variables with radiographically distinct cerebral MOGAD syndromes (case-control analysis).

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Purpose: Delayed treatment in status epilepticus (SE) is independently associated with increased treatment resistance, morbidity, and mortality. We describe the prehospital management pathway and Emergency Medical Services (EMS) timeliness in children who developed refractory convulsive status epilepticus (RCSE).

Methods: Retrospective multicenter study in the United States using prospectively collected observational data from June 2011 to March 2020.

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Article Synopsis
  • Breast cancer is the most common cancer in women globally, with early-stage diagnosis prevalent in Taiwan due to effective mammography screening, although interval cancers may lead to worse outcomes.
  • The study analyzed data from both screening and diagnostic mammography between 2010 and 2020, finding that initial screening led to more early-stage detections and better treatment outcomes compared to diagnostic mammography.
  • Among those screened from 2012 to 2016, a significant number of positive cases were detected, highlighting the importance of screening in improving survival rates and reducing tumor severity.
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Background And Objectives: The objective of this study was to determine patient-specific factors known proximate to the presentation to emergency care associated with the development of refractory convulsive status epilepticus (RSE) in children.

Methods: An observational case-control study was conducted comparing pediatric patients (1 month-21 years) with convulsive SE whose seizures stopped after benzodiazepine (BZD) and a single second-line antiseizure medication (ASM) (responsive established status epilepticus [rESE]) with patients requiring more than a BZD and a single second-line ASM to stop their seizures (RSE). These subpopulations were obtained from the pediatric Status Epilepticus Research Group study cohort.

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People with dementia (PwD) who receive home healthcare (HHC) may have distressing symptoms, complex care needs and high mortality rates. However, there are few studies investigating the determinants of mortality in HHC recipients. To identify end-of-life care needs and tailor individualized care goals, we aim to explore the mortality rate and its determinants among PwD receiving HHC.

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  • The study examines how adding colloidal quantum dots (QDs) and Ag nanoparticles (NPs) into nanoscale cavities on a GaN template can boost color conversion performance in displays.
  • By leveraging surface plasmon (SP) coupling and Förster resonance energy transfer (FRET), the research shows improved emission efficiency from QDs and enhanced energy transfer from quantum wells (QWs) to QDs.
  • Results indicate that the nanoscale-cavity effect not only increases QD emission but also enhances the overall color conversion efficiency, confirmed by both experimental and simulation data.
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  • A retrospective study analyzed the early clinical outcomes and potential biomarkers in 10 children with cryptogenic FIRES after starting anakinra treatment.
  • Six out of the ten children were able to stop anesthetic treatment within three weeks, with one child taking four weeks.
  • Notable changes were observed in EEG patterns and inflammatory markers (CRP, IL-6, IL-10), suggesting these could be useful for tracking treatment effectiveness and disease progression, warranting further research.
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Expression of immediate early genes (IEGs) in the brain is important for synaptic plasticity, and probably also in neurodegenerative conditions. To understand the cellular mechanisms of the underlying neuropathophysiological processes in epilepsy, we need to pinpoint changes in concentration of synaptic plasticity-related proteins at subsynaptic levels. In this study, we examined changes in synaptic expression of Activity-regulated cytoskeleton-associated (Arc) and Brai Derived Neurotrophic Factor (BDNF) in a rat model of kainate-induced temporal lobe epilepsy (TLE).

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