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Abdominal Aortic Aneurysm, treatment options and results
Get PDFDepartment of Vascular and Endovascular surgery,
The Republican Clinical Hospital, State Medical and Pharmaceutical University „Nicolae Testemitanu”,
Chisinau, Republic of MoldovaIntroduction: The Abdominal Aortic Aneurysm (AAA) represents the 12 cause of mortality in
elderly subjects in USA. It is defined as an aortic dilation more than 3 cm in anterior-posterior or transversal
cross-section, that exceeds the limit of 2 standard deviations. The natural evolution of the AAA lead to the
rupture, nonetheless, the surgical risk of the procedure can be accepted in the exceeding 5.0-5.5 diameter
AAA. Generally, 2 options of surgery can be regarded-Open and Endovascular Aneurysm Repair.
Purpose and Objectives: Was to make a meta-analysis focused on the methods from
different published studies, contrasting the aneurysm repair results in mid and long term.
Material and methods: The study is based on literature review, expressing the outcomes of
multicenter randomized clinical trials. There were considered also the screening/diagnostics
features, the 30 days mortality and the long term follow up depending on surgical treatment option.Results: The average AAA grow rate is 0.2-0.3 cm/year for an AAA diameter between 3 and
5 cm. Smalls aneurysms are symptomless, clinical signs can install to a large diameter, caused by
compression, erosion, trombembolia and the more significant- ruptured AAA. The death rate in an
acute rupture varies between 62-94%, depending on the individual risk factors and the situs of
rupture. The death rate in scheduled endovascular treatment is under 2%, whereas in open version
can arise to 6-7%. The long follow-up shows similar results for the both methods.
Conclusions: The screening of risk group reduces the mortality by AAA. The ultrasound
monitoring is recommended for a diameter between 3.0 and 5.0 cm, and an interventional treatment
is indicated for the aneurysms greater than 50 mm. The application of endovascular technology has
no benefit in long-term monitoring
Korrelation der Operationszeit zur Komplikationsrate nach offenen gefäßchirurgischen Eingriffen und endovaskulärer Intervention im Krankengut der Klinik für Gefäßchirurgie Saalfeld/ Thüringen
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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
Left ventricular geometry in children and adolescents
Get PDFArterial hypertension is a non-infectious pandemia in the history of humanity that places
the cardiovascular diseases at one of the first places according to the indexes of sickness rate and
death-rate. Left Ventricular Hypertrophy is a multifactor condition caused mainly by arterial
hypertension. The changes in the target organs are a function of the levels of blood pressure and
the duration of the disease. The purpose of this study was to evaluate the LV hypertrophy and
LV geometry in children and adolescents with arterial hypertension.
Hipertensiunea arterială reprezintă o pandemie neinfecțioasa în istoria omenirii, care
poziționează maladiile sistemului cardiovascular la limita de vîrf în structura maladiilor prin
morbiditate şi mortalitate. Hipertrofia ventriculară stîngă este modificare multifactorială, cauzată
primordial de hipertensiunea arterială. Modificările organelor țintă sunt dependente de valorile
tensionale şi durata maladiei. Scopul studiului prezent este de a evalua prezența Hipertrofiei
Ventriculare, precum şi modelul geometric de afectare la copii şi adolescenții cu hipertensiune
arterială
Patent arterial duct in children
Get PDFDepartamentul pediatriePatent arterial duct provides a communication between descending aorta and left
pulmonary artery.This cardiac disease has a rate of 7- 10 % of all congenital heart defects. The
results of surgical treatment aplicated to 37 patients are inversely proportional to patient age, but
also this has an obvious success in the advanced age, as demonstrated in my study.
Canalul arterial persistent realizează o comunicare între aorta descendentă şi originea
arterei pulmonare stîngi. Incidenţa acestei patologii este de 7-10 % din totalitatea malformaţiilor
cardiace congenitale. Rezultatele tratamentului chirurgical aplicat în studiul efectuat este invers
proporţional cu vîrsta pacientilor, avînd un succes remarcabil şi la o diagnosticare tardivă,
demonstrîndu-se în studiul meu
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