1,720,961 research outputs found
Neuroimaging in CMV congenital infected neonates: how and when.
No full textNeonatal congenital infections are an important cause of mortality, morbidity and long-term
neurodevelopmental and sensorineural sequelae. Many pathogens can cause in utero infection,
and among them, cytomegalovirus (CMV) plays a prominent role.
In developed countries, CMV poses major health problems as it is the most common pathogen
leading to congenital infection, and the leading cause of nonhereditary deafness in children.
Evaluation of central nervous system (CNS) involvement in congenital CMV infected newborns
is mandatory to better assess the severity of the disease, to guide adequate treatment, to define
prognosis, and to tailor follow-up observations and parents’ counselling.
Cerebral ultrasonography (cUS), Computed Tomography (CT), and Magnetic Resonance Imaging
(MRI) are the currently available techniques to evaluate infants with suspected or proven
congenital CMV infection.
In congenital CMV infection, their role in early detection and confirmation of cerebral
involvement within the first month of life is crucial to initiate specific treatment with antivirals.
Neonatologists, paediatricians and radiologists should be aware of the role, the limitations and
the inherent risks related to the use of these specific neuroimaging diagnostic tools in these
infants.
In this article we will discuss from a neonatological perspective the advantages, disadvantages,
risks and limitations of each imaging technique.
Impact of a mobile application for heart rate assessment in simulated neonatal resuscitation: A randomised controlled cross-over study
No full textBackground Clinical assessment of newborn heart rate (HR) at birth has been reported to be inaccurate. NeoTapAdvancedSupport (NeoTapAS) is a free-of-charge mobile application that showed good accuracy in HR estimation. This study aimed to evaluate the impact of NeoTapAS on timing of HR communication and resuscitation interventions. Methods This was a randomised controlled cross-over (AB/BA) study evaluating HR assessment using auscultation plus NeoTapAS compared with auscultation plus mental computation in a high-fidelity simulated newborn resuscitation scenario. Twenty teams each including three paediatric residents were randomly assigned to AB or BA arms. The primary outcome was the timing of the first HR communication. Secondary outcomes included the timing of the following four HR communications and the timing of resuscitation interventions (positive pressure ventilation, chest compressions, intubation and administration of first dose of epinephrine). Results NeoTapAS reduced the time to the first HR communication (mean difference-13 s, 95%CI-23 to-4; p=0.009), and the time of initiation of chest compressions (mean difference-68 s, 95%CI-116 to-18; p=0.01) and administration of epinephrine (mean difference-76 s, 95%CI-115 to-37; p=0.0004) compared with mental computation. Conclusions In a neonatal resuscitation simulated scenario, NeoTapAS reduced the time to the first HR communication and the time of initiation of chest compressions and administration of epinephrine compared with mental computation. This app can be especially useful in settings with limited availability of monitoring equipment, but further studies in clinical scenarios are warranted. Trial registration number NCT03730025
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
Liposomal amphotericin B does not induce nephrotoxicity or renal function impairment in premature neonates
No full textBackground: Liposomal amphotericin B (LAMB) is frequently administered in NICU to preterm infants <1500 g at birth (VLBW) for treatment of systemic fungal infections (SFI). Concerns exist on safety and tolerability of such drug in patients who are at risk for renal function impairment due to their prematurity. Aim: To assess the occurrence of renal function impairment related to LAMB in a 10-year cohort of VLBW neonates treated with this drug. Methods: Through database search of clinical charts, all VLBW neonates admitted to a 3rd level NICU in the years 1998-2007 and undergoing treatment with LAMB were identified. The occurrence of LAMB-attributable renal toxicity was investigated; infants withdrawn from treatment for development of adverse effects or toxicity were identified. Results: In the study period, 71 of 792 admitted VLBW neonates (8.9%) underwent antifungal treatment with LAMB administered at the recommended dosages (3-to-5 mg/kg/day). Mean duration of treatment was 14 (±9) days, mean cumulative dose given was 58 (±25) mg/kg per infant. Renal compromise, defined as hypokalaemia, and/or elevated creatinine serum levels, and/or decreased urine output, occurred in 2 of 71 (2.8%) treated patients, by 5 (±3) mean days after treatment initiation. In both patients LAMB was withdrawn; renal function impairment was only mild and transient, and normal renal function was restored at discharge. No other significant adverse effects were recorded in any treated neonate. Conclusions: LAMB is generally safe and well tolerated in VLBW neonates. The occurrence of LAMB-related nephrotoxicity appears to be uncommon, mild and transient
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
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