Publications by authors named "Gregory Webster"

Text-based automatic personality recognition (APR) operates at the intersection of artificial intelligence (AI) and psychology to determine the personality of an individual from their text sample. This covert form of personality assessment is key for a variety of online applications that contribute to individual convenience and well-being such as that of chatbots and personal assistants. Despite the availability of good quality data utilizing state-of-the-art AI methods, the reported performance of these recognition systems remains below expectations in comparable areas.

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  • The study investigates how cardiac implantable electronic devices (CIEDs) affect the accuracy and precision of phase-contrast MRI measurements of aortic velocity in both adult and pediatric patients.
  • A total of 29 subjects (21 adults and 8 children) were scanned using various MRI techniques while simulating the presence of CIEDs to analyze image artifacts.
  • Results showed that the proximity of the CIED to the aortic valve worsens measurement accuracy, with biases and variations increasing as the distance decreases, highlighting the need to consider CIED impact during MRI readings.
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Background: Although genetic variants in are the most frequent cause of pediatric genetic dilated cardiomyopathy (DCM), there are no studies available describing this entity. We sought to describe clinical features, analyze variant location, and explore predictors of bad prognosis in pediatric -related DCM.

Methods And Results: We evaluated clinical records from 44 patients (24 men; median age at diagnosis, 0.

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Objective: Caregivers' self-efficacy for managing their child's asthma appears to influence their success with managing their child's disease. We examined how caregiver self-efficacy operates in the context of multilevel social-environmental support factors to shape asthma outcomes.

Method: Caregivers of children (< 18 years old) with asthma completed surveys at baseline (T1) and 3 months later (T2).

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Background: Whether vigorous exercise increases risk of ventricular arrhythmias for individuals diagnosed and treated for congenital long QT syndrome (LQTS) remains unknown.

Methods: The National Institutes of Health-funded LIVE-LQTS study (Lifestyle and Exercise in the Long QT Syndrome) prospectively enrolled individuals 8 to 60 years of age with phenotypic and/or genotypic LQTS from 37 sites in 5 countries from May 2015 to February 2019. Participants (or parents) answered physical activity and clinical events surveys every 6 months for 3 years with follow-up completed in February 2022.

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Aims: To determine whether paediatric congenital heart disease (CHD) patients with epicardial cardiac implantable electronic devices (CIEDs) receive high cumulative effective doses (CEDs) of ionizing radiation from medical imaging tests.

Methods And Results: We compared 28 paediatric CHD patients with epicardial CIEDs (cases) against 40 patients with no CIED matched by age at operation, sex, surgical era, and CHD diagnosis (controls). We performed a retrospective review of radiation exposure from medical imaging exams between 2006 and 2022.

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The following case series presents three different pediatric patients with SCN5A-related disease. In addition, family members are presented to demonstrate the variable penetrance that is commonly seen. Identifying features of this disease is important, because even in the very young, SCN5A disorders can cause lethal arrhythmias and sudden death.

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Objective: Pediatric asthma management is challenging for parents and guardians (hereafter ). We examined (1) how caregivers mentally represent trigger and symptom management strategies, and (2) how those mental representations are associated with actual management behavior.

Methods: In an online survey,  = 431 caregivers of children with asthma rated 20 trigger management behaviors and 20 symptom management behaviors across 15 characteristics, and indicated how often they engaged in each behavior.

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Several studies suggest that "don't know" (DK) responses to risk perception items may represent meaningful expressions of uncertainty about disease risk. However, researchers are often discouraged from including a DK response option in survey items due to concerns about respondents overusing it to minimize cognitive effort-a phenomenon often referred to as . Our objective was to investigate whether patterns of DK responses to risk perception survey items were consistent with satisficing behavior.

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Background: Sudden unexpected death in children is a tragic event. Understanding the genetics of sudden death in the young (SDY) enables family counseling and cascade screening. The objective of this study was to characterize genetic variation in an SDY cohort using whole genome sequencing.

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Article Synopsis
  • Cardiovascular magnetic resonance (CMR) is an important imaging tool for diagnosing heart issues and helping with treatment decisions, especially for patients with cardiac implantable electronic devices (CIED) who often face arrhythmias and cardiomyopathy.
  • Over the past 16 years, advancements in both CIED and CMR technologies, as well as MR safety knowledge, underline the need for updated guidelines to ensure safe use of CMR in patients with these devices.
  • The SCMR Expert Consensus Statement aims to bridge existing knowledge gaps by combining expert opinions and current data, ultimately supporting evidence-based practices for using CMR in CIED patients.
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There is a paucity of data regarding the safety of magnetic resonance imaging (MRI) in patients with abandoned epicardial leads. Few studies have reported temperature rises up to 76 °C during MRI at 1.5 T in gel phantoms implanted with epicardial leads; however, lead trajectories used in these experiments were not clinically relevant.

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Risk stratification for sudden death should be discussed with patients with congenital heart disease at each stage of personal and cardiac development. For most patients, risk is low through teenage years and the critical factors to consider are anatomy, ventricular function, and symptoms. By adulthood, these are supplemented by screening for atrial arrhythmias, ventricular arrhythmias, and pulmonary hypertension.

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How do daily fluctuations in aggression relate to daily variability in affect and self-esteem? Although research has examined how trait aggression relates to affect and self-esteem, state aggression has received little attention. To this end, we had 120 US undergraduates participate in a 14-day daily diary study where they responded to state-level measures of aggression, affect, and self-esteem. Crucially, we used multifaceted state measures of both aggression (anger, hostility, verbal aggression, physical aggression) and affect (positive vs.

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This study focused on the potential risks of radiofrequency-induced heating of cardiac implantable electronic devices (CIEDs) in children and adults with epicardial and endocardial leads of varying lengths during cardiothoracic MRI scans. Infants and young children are the primary recipients of epicardial CIEDs, though the devices have not been approved as MR conditional by the FDA due to limited data, leading to pediatric hospitals either refusing the MRI service to most pediatric CIED patients or adopting a scan-all strategy based on results from adult studies. The study argues that risk-benefit decisions should be made on an individual basis.

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  • The study reviews the risks of MRI scans in pediatric patients with cardiac implantable electronic devices (CIEDs), focusing on those with epicardial or abandoned leads, where guidelines discourage routine scans.
  • A multicenter review analyzed 314 patients who underwent 389 MRIs from 2007 to 2022, assessing any adverse events or significant changes to their CIEDs post-scan.
  • Results showed only a small incidence of symptoms or CIED changes (4.9% of MRIs), suggesting that MRIs can be safely conducted for these patients without major complications.
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Objective: Parents and guardians (hereafter ) make decisions for their children's medical care. However, many caregivers of children with asthma struggle to understand their child's illness. We used the psychometric paradigm to investigate how caregivers conceptualize, or , asthma triggers and symptoms and how these representations are linked to perceived asthma exacerbation risk.

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  • Calmodulinopathy is caused by mutations in CALM genes and leads to serious arrhythmias, particularly in young people; the ICalmR aims to connect clinical symptoms with molecular causes.
  • The ICalmR has gathered data from 140 patients, showing a notable presence of CALM-LQTS and CALM-CPVT, and has observed a decrease in the frequency of serious cardiac events compared to past data.
  • The condition presents a wide range of symptoms, from severe arrhythmias to no symptoms at all; while therapy options are limited and based on current practices, management often involves medication and devices like defibrillators.
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Purpose: After epicardial cardiac implantable electronic devices are implanted in pediatric patients, they become ineligible to receive MRI exams due to an elevated risk of RF heating. We investigated whether simple modifications in the trajectories of epicardial leads could substantially and reliably reduce RF heating during MRI at 1.5 T, with benefits extending to abandoned leads.

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Introduction: We describe a unique case of TECRL-CPVT presented with cardiac arrest.

Methods: Post resuscitation, the patient developed regular ventricular tachycardia featuring a left purkinje system morphology.

Results: There was clear suppression of arrhythmia with the addition of flecainide and isolated ventricular ectopy causing secondary T-wave changes.

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Introduction: Wait time in healthcare is an important barrier to HIV/STI testing. Using a delay discounting approach, the current study examined a systematic reduction in testing likelihood as a function of delay (wait time) until testing.

Methods: In Study 1 ( = 421; data collected in 2019), participants were randomly assigned to either a chlamydia/gonorrhea group or HIV group.

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Background: Sudden unexpected death in children is a tragic event. Understanding the genetics of sudden death in the young (SDY) enables family counseling and cascade screening. The objective of this study was to characterize genetic variation in an SDY cohort using whole genome sequencing.

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People often use cognitive and affective heuristics when judging the likelihood of a health outcome and making health decisions. However, little research has examined how heuristics shape risk perceptions and behavior among people who make decisions on behalf of another person. We examined associations between heuristic cues and caregivers' perceptions of their child's asthma risk, the frequency of caregivers' asthma management behaviors, and child health outcomes.

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