Publications by authors named "Helen Robertson"

Purpose: There is significant variability in the application of positive end-expiratory pressure (PEEP) in patients undergoing invasive mechanical ventilation. There are numerous studies assessing methods of determining optimal PEEP, but many methods, patient populations, and study settings lack high-quality evidence. Guidelines make no recommendations about the use of a specific method because of equipoise and lack of high-quality evidence.

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  • The evolutionary origin of Bilateria is unclear, but similarities between cnidarian-like larvae and simple flatworms suggest a connection, linking Xenacoelomorpha as a potential early branch of Bilateria.
  • This study focuses on assembling and analyzing the genome of a marine xenacoelomorph, discovering it has a genome size of ~111 Mbp with characteristics similar to other bilaterians.
  • The findings indicate that despite its simple body plan, the xenacoelomorph has a complex genome and retains many features typical of bilaterians, challenging previous assumptions about its evolutionary simplicity.
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  • Phylogenetic research has grouped previously isolated groups like nematodermatids, acoels, and xenoturbelids into a new phylum called Xenacoelomorpha.
  • Some studies suggest that Xenacoelomorpha may be closely related to Ambulacraria, while others indicate it could be a sibling group to all Bilateria.
  • Research using single-cell RNA sequencing in the marine worm Xenoturbella bocki reveals similarities in nerve nets, muscles, and glands that support the idea of shared evolutionary traits among various animal groups, reinforcing the monophyly of Xenacoelomorpha.
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Efferocytic clearance of apoptotic cells in general, and T cells in particular, is required for tissue and immune homeostasis. Transmembrane mucins are extended glycoproteins highly expressed in the cell glycocalyx that function as a barrier to phagocytosis. Whether and how mucins may be regulated during cell death to facilitate efferocytic corpse clearance is not well understood.

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Introduction: Titrated application of positive end-expiratory pressure (PEEP) is an important part of any mechanical ventilation strategy. However, the method by which the optimal PEEP is determined and titrated varies widely. Methods for determining optimal PEEP have been assessed using a variety of different study designs and patient populations.

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Background: Chest pain is a common cause for emergency department (ED) presentations. After myocardial infarction (MI) has been ruled out by means of electrocardiography and troponin testing, decisions around anatomic or functional testing may be informed by clinical risk scores. We conducted a systematic review to synthesize evidence of the prognostic performance of chest pain risk scores among ED patients who have had MI ruled out by means of a high-sensitivity troponin assay.

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Background: Hyperfunctioning or hot nodules are thought to be rarely malignant. As such, current guidelines recommend that hot nodules be excluded from further malignancy risk stratification. The objective of this systematic review and meta-analysis is to compare the malignancy risk in hot nodules and non-toxic nodules in observational studies.

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Purpose: To perform a scoping review of the evidence for therapeutic interventions to manage functional impairments associated with Rett syndrome (RTT) throughout the lifespan.

Methods: MEDLINE, EMBASE, PsycINFO, CENTRAL, CINAHL, Scopus and Index to Chiropractic Literature were searched systematically up to December 2019. Two investigators independently reviewed all search results and extracted those that met the inclusion criteria.

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Background: Patients with chronic noncancer pain (CNCP) present unique challenges to emergency department (ED) care providers and administrators. Their conditions lead to frequent ED visits for pain relief and symptom management and are often poorly addressed with costly, low-yield care. A systematic review has not been performed to inform the management of frequent ED utilizing patients with CNCP.

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Macrocyclic lactone treatments for livestock can have detrimental effects on the arthropod populations in livestock faeces. For the last twenty years, avoidance of these products has been a standard recommendation on livestock farms that are managed for wildlife by the Royal Society for Protection of Birds (RSPB). However, the continued decline in the populations of birds (in particular the red-billed chough Pyrrhocorax pyrrhocorax) that are dependent on dung invertebrates on islands in the Inner Hebrides of Scotland prompted us to investigate the effects of livestock treatments that are commonly used on these islands.

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Background: Electronic health records (EHRs) are increasing in popularity across national and international healthcare systems. Despite their augmented availability and use, the quality of electronic health records is problematic. There are various reasons for poor documentation quality within the EHR, and efforts have been made to address these areas.

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Background: Childhood obesity has become a global epidemic irrespective of the socioeconomic status of a country or nation. Obesity increases the risk of various diseases in children, for example asthma, sleep apnea, bone and joint problems, type-2 diabetes, and heart problems. The existing literature informs us of the many factors associated with childhood obesity.

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  • - The Dicyemida and Orthonectida are tiny, simple parasitic organisms previously classified together as Mesozoa, but recent research suggests they are actually simplified forms of protostomian metazoans derived from more complex ancestors.
  • - Researchers have sequenced the first nearly complete mitochondrial genome from an orthonectid, revealing a unique gene order and an exceptionally AT-rich composition, with typical metazoan gene content.
  • - Limited findings regarding Dicyemida show that their mitochondrial genes might be on mini-circles rather than the large circular genomes common in most metazoans, and a series of unique conserved deletions was identified in their genes.
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  • The Orthonectida and Dicyemida are tiny, simplistic endoparasites found in marine animals, classified within a group called Mesozoa, which is thought to be an evolutionary link between simpler protozoa and more complex animals.
  • Orthonectida consist of a few hundred cells, including a basic nervous system, while Dicyemida are even simpler, with about 40 cells, indicating a primitive state, despite molecular evidence suggesting they are more closely related to complex organisms in the Lophotrochozoa group.
  • New genetic analysis shows that both groups belong to Lophotrochozoa and indicates that the Mesozoa is polyphyletic, with orthonectids being
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Introduction: Point-of-care ultrasound (POCUS) has been suggested as an initial investigation in the management of renal colic. Our objectives were: 1) to determine the accuracy of POCUS for the diagnosis of nephrolithiasis and 2) to assess its prognostic value in the management of renal colic.

Methods: The review protocol was registered to the PROSPERO database (CRD42016035331).

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Background: The prevalence of menopause in women with or at risk of chronic kidney disease is increasing globally. Although international guidelines on menopause recommend the use of postmenopausal hormone therapy with or without selective estrogen receptor modulators for control of vasomotor symptoms, the effects of these treatments on kidney function and albuminuria are unclear. Furthermore, women with chronic kidney disease are at significantly increased risk of venous thromboembolism and malignancy, well-documented adverse effects of postmenopausal hormone therapy.

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Acoels are small, ubiquitous - but understudied - marine worms with a very simple body plan. Their internal phylogeny is still not fully resolved, and the position of their proposed phylum Xenacoelomorpha remains debated. Here we describe mitochondrial genome sequences from the acoels Paratomella rubra and Isodiametra pulchra, and the complete mitochondrial genome of the acoel Archaphanostoma ylvae.

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Despite the near universal adaptation of gentle mechanical ventilation, surfactant use and non-invasive respiratory support, bronchopulmonary dysplasia (BPD) remains one of the most common respiratory morbidities in very low birth weight (VLBW) infants. Thus, the objective of this review was to evaluate the efficacy of intra-tracheal administration of budesonide-surfactant mixture in preventing bronchopulmonary dysplasia (BPD) in very low birth weight (VLBW) infants. MEDLINE, EMBASE, and PubMed were searched for randomized clinical trials in which intra-tracheal administration of budesonide-surfactant was used to prevent BPD in infants.

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 Omega-3 fatty acids are vital for brain and retinal maturation. It is not clear if early use of ω-3 fatty acids in the form of fish-oil lipid emulsions (FLEs) prevents retinopathy of prematurity (ROP) in preterm infants. The aim of this meta-analysis is to evaluate whether early administration of parenteral FLEs reduces ROP requiring laser therapy or severe ROP ≥stage 3 in preterm infants.

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Background: Evidence regarding longer-term psychiatric, psychological, and behavioural outcomes (for example, anxiety, mood disorders, depression, and attention disorders) following mild traumatic brain injury (mTBI) in children and adolescents has not been previously synthesized.

Objective: To conduct a systematic review of the available evidence examining psychiatric, psychological, and behavioural outcomes following mTBI in children and adolescents.

Materials And Methods: Nine electronic databases were systematically searched from 1980 to August 2014.

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Background: Modern demands and challenges among healthcare professionals can be particularly stressful and resilience is increasingly necessary to maintain an effective, adaptable, and sustainable workforce. However, definitions of, and associations with, resilience have not been examined within the primary care context.

Aim: To examine definitions and measures of resilience, identify characteristics and components, and synthesise current evidence about resilience in primary healthcare professionals.

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Background: The modern primary healthcare workforce needs to be resilient. Early research framed professional resilience as avoiding 'burnout'; however, more recent literature has introduced the concept of positive adaptation to professional challenges, which results in individuals thriving in their role.

Aim: To explore what primary health professionals working in challenging environments consider to be characteristics of resilience and what promotes or challenges professional resilience.

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Background: In Scotland community pharmacies are heavily involved in service delivery for people with drug problems (PWDP) as documented through surveys of all community pharmacies in 1995, 2000 and 2006. A further survey in 2014 enabled trends in service demand/provision to be analysed and provides insight into future development.

Methods: The lead pharmacist in every Scottish pharmacy (n=1246) was invited to complete a postal questionnaire covering attitudes towards PWDP and service provision and level of involvement in services (needle exchange, dispensing for PWDP and methadone supervision).

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Introduction: Inflammatory and protein mediators (cytokine, chemokine, acute phase proteins) play an important, but still not completely understood, role in the morbidity and mortality of intra-abdominal sepsis/injury. We therefore systematically reviewed preclinical and clinical studies of mediators in intra-abdominal sepsis/injury in order to evaluate their ability to: (1) function as diagnostic/prognostic biomarkers; (2) serve as therapeutic targets; and (3) illuminate the pathogenesis mechanisms of sepsis or injury-related organ dysfunction.

Methods: We searched MEDLINE, PubMed, EMBASE and the Cochrane Library.

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