Publications by authors named "Kevin Donovan"

The UK Overseas Territories (UKOTs) are small, often remote territories with historical and territorial links to the UK. They range from densely populated areas (Cayman, Bermuda, Gibraltar) to land with no permanent inhabitants (British Antarctic Territory, South Georgia). However, they are linked by ecosystem instability (the permacrisis) including antimicrobial resistance (AMR), climate change and biodiversity disruption.

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Technical and clinical developments have raised challenging questions about the concept and practice of brain death, culminating in recent calls for revision of the Uniform Determination of Death Act (UDDA), which established a whole brain standard for neurologic death. Proposed changes range from abandoning the concept of brain death altogether to suggesting that current clinical practice simply should be codified as the legal standard for determining death by neurologic criteria (even while acknowledging that significant functions of the whole brain might persist). We propose a middle ground, clarifying why whole brain death is a conceptually sound standard for declaring death, and offering procedural suggestions for increasing certainty that this standard has been met.

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Neurological consultation for patients infected with SARS-CoV-2 is common; it is currently unknown whether the neurologist's approach to inpatient consultation of patients with SARS-CoV-2 should differ from the paradigm used to evaluate hospitalized patients with similar respiratory viruses. The goal of the present study is to determine if the preponderance of new neurologic diagnoses differs between inpatients with SARS-CoV-2 and similar non-SARS-CoV-2 respiratory viruses for whom neurology is consulted. We performed a retrospective chart analysis of inpatient neurologic consultations at three major Philadelphia-based hospitals.

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Aim: The objectives of this review are to identify and characterize attempts to transfer ectopic embryos to the uterus, and to understand arguments for and against the feasibility of such an intervention.

Methods: An electronic literature search involved all English language articles published in MEDLINE (1948-), Web of Science (1899-), and Scopus (1960-) before July 1, 2022. Articles were included that identify or describe attempts to transfer the embryo from its ectopic location to the uterine cavity, or discuss the feasibility of such an intervention; there were no exclusion criteria (PROSPERO registration number CRD42022364913).

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Importance: Children with autism and their siblings exhibit executive function (EF) deficits early in development, but associations between EF and biological sex or early brain alterations in this population are largely unexplored.

Objective: To investigate the interaction of sex, autism likelihood group, and structural magnetic resonance imaging alterations on EF in 2-year-old children at high familial likelihood (HL) and low familial likelihood (LL) of autism, based on having an older sibling with autism or no family history of autism in first-degree relatives.

Design, Setting, And Participants: This prospective cohort study assessed 165 toddlers at HL (n = 110) and LL (n = 55) of autism at 4 university-based research centers.

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In modern clinical decision-support algorithms, heterogeneity in image characteristics due to variations in imaging systems and protocols hinders the development of reproducible quantitative measures including for feature extraction pipelines. With the help of a reader study, we investigate the ability to provide consistent ground-truth targets by using patient-specific 3D-printed lung phantoms. PixelPrint was developed for 3D-printing lifelike computed tomography (CT) lung phantoms by directly translating clinical images into printer instructions that control density on a voxel-by-voxel basis.

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Article Synopsis
  • Nuisance variables complicate medical imaging research by introducing noise that affects association and prediction studies due to the high dimensionality and correlation among features.
  • Traditional methods like by-region univariate residualization often fail to account for the multivariate properties of the data, leading to incomplete removal of nuisance influences.
  • The authors propose a new multivariate residualization method using machine learning to better estimate the relationship between image data and nuisance variables, demonstrating its effectiveness through simulations and application to Alzheimer's Disease Neuroimaging Initiative data.
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The evaluation of the overlap between the ADOS BOSCC and Standard BOSCC as well as the exploration of child characteristics that may predict change are important steps in consolidating data-driven definitions of "improvement". Participants were seen between 2 and 5 times with Standard BOSCC and ADOS BOSCC observations over the course of early intervention trials (Grzadzinski et al. in J Autism Dev Disord 46:2464, 2016; Kim et al.

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Background: Sex differences in the prevalence of neurodevelopmental disorders are particularly evident in autism spectrum disorder (ASD). Heterogeneous symptom presentation and the potential of measurement bias hinder early ASD detection in females and may contribute to discrepant prevalence estimates. We examined trajectories of social communication (SC) and restricted and repetitive behaviors (RRBs) in a sample of infant siblings of children with ASD, adjusting for age- and sex-based measurement bias.

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We deliver one month's average profit to a randomly selected group of female microenterprise owners in Dandora, Kenya, arriving just in advance of an exponential growth in COVID-19 cases. Relative to a control group, firms recoup about one third of their initial decline in profit, and food expenditures increase. Control profit responds to economic conditions and government announcements during our study period, and treatment effects are largest when control profit is at its lowest.

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We present a study design, pre-analysis plan, process evaluation and baseline results designed to establish the impact of trailbridges on health, education, agricultural and economic outcomes of households in rural Rwanda. This intervention and study is being implemented in communities that face barriers to socioeconomic development through periodic isolation caused by flooding. We describe a mixed methods approach to measure the impacts of these trailbridges on outcomes at the village level.

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Article Synopsis
  • Phantoms are crucial for testing and verifying CT performance, especially realistic lung phantoms that mimic patient conditions for better hardware and software development.
  • The study introduces PixelPrint, a 3D-printing method that turns patient images into lung phantoms with accurate density and texture, matching the features of actual lung scans.
  • Evaluation of PixelPrint showed that the printed phantoms closely matched real patient scans in terms of texture and geometric accuracy, making them a useful tool for optimizing CT protocols and enhancing research.
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Objective: Autism spectrum disorder (ASD) is heritable, and younger siblings of ASD probands are at higher likelihood of developing ASD themselves. Prospective MRI studies of siblings report that atypical brain development precedes ASD diagnosis, although the link between brain maturation and genetic factors is unclear. Given that familial recurrence of ASD is predicted by higher levels of ASD traits in the proband, the authors investigated associations between proband ASD traits and brain development among younger siblings.

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Background And Aims: Fecal microbiota transplant (FMT) via colonoscopy is highly effective treatment for infection (CDI). We aimed to determine baseline patient characteristics that predict failure to respond to colonoscopy-based FMT.

Methods: We evaluated adult patients who received FMT for CDI not responding to standard therapies at a single tertiary center between 2014 and 2018 in this retrospective cohort study.

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Rural isolation can limit access to basic services and income-generating opportunities. Among some communities, rainfall induced flooding can cause increased uncertainty where first-mile transportation infrastructure is limited. In Rwanda, this challenge is apparent, where 90% of the population below the poverty line live in rural areas that are typically mountainous with frequent flooding - events that may be increasing in frequency and severity as the climate changes.

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Objective: This study aimed to develop a classifier for infants at 12 months of age based on a parent-report measure (the First Year Inventory 2.0 [FYI]), for the following reasons: (1) to classify infants at elevated risk, above and beyond that attributable to familial risk status for ASD; and (2) to serve as a starting point to refine an approach for risk estimation in population samples.

Method: A total of 54 high-familial risk (HR) infants later diagnosed with ASD (HR-ASD), 183 HR infants not diagnosed with ASD at 24 months of age (HR-Neg), and 72 low-risk controls participated in the study.

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Most Catholic physicians work with the comfortable assumption that we can practice our profession and our faith, fully assimilated into modern American culture and society. Increasingly, we have come to realize that to be a Catholic Christian is by nature to be countercultural. American culture, ordered by the founding fathers in concepts of liberty and freedom, has been profoundly affected by the introduction and reliance on a contraceptive pill.

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Children with Autism Spectrum Disorder (ASD) often display atypical sensory reactivity within the first years of life, prior to a diagnosis. This study examined sensory reactivity patterns at 14 months, changes from 14 to 23 months, and later ASD severity at 3 to 5 years of age in children (n = 87) at elevated likelihood of ASD. Results indicated that observed hyporeactivity at 14 months and increases from 14 to 23 months were related to higher ASD severity during the preschool years.

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Objective: HIV-associated neurocognitive disorders persist despite early antiretroviral therapy (ART) and optimal viral suppression. We examined the relationship between immunopathogenesis driven by various pathways of immune activation and discrete neurocognitive performance domains in youth with HIV (YWH).

Design: Observational cross-sectional study.

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