1,721,026 research outputs found

    Thoracoscopic CDH repair using a barbed suture

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    <p>This video shows thoracoscopic closure of a congenital diaphragamtic hernia using a barbed suture</p&gt

    Spektrum der minimalinvasiven Operationstechniken zur Versorgung von Leistenhernien bei Säuglingen und Kindern

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    Zusammenfassung Einer der häufigsten operativen Eingriffe bei Säuglingen und Kindern ist die Korrektur einer indirekten Leistenhernie. Sie kann sowohl offen als auch mittels minimalinvasiver Chirurgie (MIC) durchgeführt werden. Seit 1998 wurden dazu zahlreiche unterschiedliche MIC-Techniken beschrieben. Wissenschaftlich nachgewiesene Vorteile sind dabei eine kürzere Operationszeit bei beidseitigen Hernien sowie das geringere Aufkommen einer metachronen kontralateralen Hernie. Dennoch ist der Anteil von mit MIC versorgten Leistenhernien bei Kindern hierzulande mit etwa 8% aller Operationen relativ gering. Ziel dieser Synopsis ist die Beschreibung der verschiedenen MIC-Techniken zur Korrektur der Leistenhernie bei Kindern, einschl. der jeweiligen Vor- und Nachteile. Der Videozusammenschnitt zeigt das Spektrum der unterschiedlichen Techniken der laparoskopischen Leistenhernienversorgung beim Kind. Dazu zählen die intrakorporale Nahttechnik, die Inzision des Peritoneums, extrakorporale perkutane Techniken sowie die Kauterisation des offenen Processus vaginalis peritonei beim Mädchen. Die minimalinvasive Leistenhernienkorrektur beim Kind ist zwar technisch und wissenschaftlich etabliert, dennoch ist sie noch nicht sehr weit verbreitet. Dieses Videomanuskript vermittelt Interessierten eine Übersicht der verschiedenen Techniken und erleichtert damit die klinische Anwendung

    Prävalenz und 1-Jahres-Überlebensrate ausgewählter Majoranomalien in Sachsen-Anhalt in den Jahren 2000-2017

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    Angeborene Anomalien spielen weltweit eine wichtige Rolle in Hinblick auf die Säuglingsmorbidität und -mortalität. Mit der vorliegenden Studie werden aktuelle Daten zur Prävalenz, zu den Schwangerschaftsausgängen und den 1-Jahres-Überlebensraten für von folgenden ausgewählten angeborenen Anomalien betroffenen Kindern in Sachsen- Anhalt, Deutschland bereitgestellt: HLHS (hypoplastisches Linksherzsyndrom), TGA (Transposition der großen Gefäße), TOF (Fallot-Tetralogie), EA (Oesophagusatresie), RA (Rektumatresie), CDH (Zwerchfellhernie), SB (Spina bifida), OM (Omphalozele) und GAS (Gastroschisis). Es erfolgte eine retrospektive Analyse einer populationsbasierten Kohorte aus den Jahren 2000 bis 2017, unter Einschluss von 1.012 Fällen. Bei der Survivalanalyse wurden verschiedene Einflussfaktoren berücksichtigt. Die Gesamtprävalenzraten reichten von 2,5 (CDH) bis 5,8 (SB) pro 10.000 Geburten. Die Lebendgeburtenprävalenzen waren niedriger. Insgesamt überlebten 88,3% der lebendgeborenen Kinder das erste Lebensjahr. Die 1-Jahres-Überlebensrate aller Fälle, einschließlich der fetalen Verluste, betrug lediglich 61,6%. Die 1-Jahres-Überlebensrate betrug 35,6% für syndromale Fehlbildungen, 57,6% für Mehrfachfehlbildungen und 68,6% für isolierte Fehlbildungen. Während des angegebenen Studienzeitraums wurde keine kontinuierliche Verbesserung der Überlebensrate verzeichnet. Die Überlebensraten von Säuglingen mit angeborenen Anomalien in Sachsen-Anhalt sind mit nationalen und internationalen Studien vergleichbar

    Going Beyond Counting First Authors in Author Co-citation Analysis

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    The 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

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    “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

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    We 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

    Over a decade of single-center experience with thoracoscopic sympathicolysis for primary palmar hyperhidrosis: a case series

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    Background!#!Primary palmar hyperhidrosis is a severely debilitating condition that can affect patients of any age. We report our experience with thoracoscopic sympathicolysis in a large cohort of children less than 14 years of age.!##!Methods!#!All children who underwent thoracoscopic sympathicolysis from April 2005 through January 2017 were evaluated retrospectively. The procedure entailed bilateral bipolar fulguration of the second and third thoracic ganglia with transverse disruption of collateral nerve fibers along the third and fourth rib. Demographic information, as well as postoperative outcome, complications, and satisfaction were analyzed.!##!Results!#!Over the 12 year study interval, a total of 102 children underwent thoracoscopic sympathicolysis for palmar hyperhidrosis. Complete follow-up was available for 98 patients (median age 12 [range 5-14] years; 38 boys [39%]). Median follow-up was 4 [range 2-12] years. Complete palmar dryness was achieved in 93 (95%) cases. One patient suffered postoperative unilateral ptosis, 6 reported gustatory sweating, and 65 experienced compensatory sweating. Average postoperative rating on a 1 (lowest) to 10 (highest) rating scale was 9, with 97 (99%) patients saying that they would undergo the procedure again.!##!Conclusion!#!Our technique of thoracoscopic sympathicolysis in children was associated with very high postoperative satisfaction, despite a high rate of compensatory sweating and occasional autonomic gustatory sweating. Other more severe complications in this age group were rare

    Dispelling the Myths Behind First-author Citation Counts

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    We 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
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