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  • 1
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 713 (1994), S. 0 
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 0167-0115
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1432-055X
    Keywords: Schlüsselwörter Hernioplastie ; Wundinstillation ; Bupivacain ; Postoperative Schmerztherapie ; Kinderchirurgie ; Key words Hernioplasty ; Wound instillation ; Bupivacaine ; Postoperative pain therapy ; Pediatric surgery
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Abstract Wound instillation seems to be an easy and preferable way to achieve postoperative analgesia in pediatric hernioplasty. This prospective, randomized and double-blinded pilot-study was initiated to gain preliminary information in order to define the appropriate concentration of local anaesthetic for efficient posthernioplastic analgesia. Method: 29 children aged 3.1 to 13.7 (5.25 (3.8–8.2) years were randomly assigned to receive either 0.2 ml/kg bupivacaine 0.125% (n = 10), bupivacaine 0.25% (n = 10) or bupivacaine 0.5% (n = 9). The local anesthetic (LA) was instillated intraoperatively before wound closure above the external oblique muscle and below Scarpa’s fascia. After entering the post-anesthetic care unit (PACU) pain was assessed by a trained nurse using the linear analogue pain scale (LAPS) in intervals of 15 min. Patients were observed in the PACU for 30–60 min. Pain was further evaluated for 5.5(3–6) h in the ward every hour. In day-only patients the parents were contacted 24 h postoperatively to obtain additional information. Results: From the beginning of the observation period the 0.5% group tended to have less pain than the others in the PACU. The 0.125% and 0.25% group required earlier supplementary analgetics. In addition, the 0.5% group needed once (1/9) supplementary analgesics, the 0.25% group five times (5/10) and the 0.125% group six times (6/10). None of these results is statistically significant, though they appear to be clinically relevant. Discussion: Wound instillation with 0.2 ml of bupivacaine 0.5% seems to be easy to perform, safe and efficient in controlling posthernioplastic pain. Because of the small numbers of patients included however, no statistically significant differences were observed between the groups. Neither in the LAPS on arrival and observation at the PACU nor in the need for supplementary analgesics. Despite lacking significance the clinical impression suggests a difference to be validated by larger studies. Our data implies that wound instillation with 0.2 ml/kg bupivacaine 0.5% should be regarded for routine usage.
    Notes: Zusammenfassung Zielsetzung: Nach Operation einer Hernia inguinalis mit oder ohne Hydrozele wurde eine Wundinstillation mit jeweils 0,2 mg/kg Bupivacain 0,125, 0,25 oder 0,5% durchgeführt, um die benötigte Konzentration an lokalem Betäubungsmittel für eine suffiziente postoperative Analgesie zu ermitteln. Methodik: 29 Kinder im Alter von 3–13 Jahren wurden in diese prospektive, randomisierte Doppelblindstudie aufgenommen. Ergebnisse: Nach Gabe von 0,5% Bupivacain zeigten die Patienten postoperativ zwar später und weniger Bedarf an zusätzlichem Schmerzmittel (Paracetamol supp.) als bei Verwendung von Bupivacain 0,125 oder 0,25% mit p = 0,71 wurde jedoch keine Signifikanz erreicht. Aufgrund einer effizienten Schmerztherapie mit peripheren Analgetika veränderten sich die mittels einer linearen analogen Schmerzskala (LAPS) beurteilten Schmerzwerte der Patienten im Verlauf zumeist gleichartig. Eine stärkere analgetische Potenz von Bupivacain 0,5% gegenüber den geringeren Konzentrationen deutet sich an, durch die geringen Fallzahlen (pro Gruppe 9–10 Patienten) ist sie nicht signifikant. Schlußfolgerung: Die Wundinstillation ist sicher, technisch einfach und effektiv. Nach Bestätigung im Rahmen von größeren Folgestudien sollte sie sich als Alternative zu invasiveren Verfahren in der postoperativen Schmerztherapie etablieren können.
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 1437-9813
    Keywords: Gastroschisis ; Omphalocele ; Ultrasonography ; Intraoperative colour-coded sonography
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Surgical repair of anterior abdominal wall defects is often complicated by a discrepancy between the eviscerated organs and the intra-abdominal space available. Primary closure of the abdominal wall may result in increased intra-abdominal pressure and consecutive circulatory impairment. We report the results of a retrospective and consecutive prospective study evaluating the influence of different witameters on mortality and morbidity in children with gastroschitis and omphalocele. Both studies demonstrated that real-time sonographic investigations, intraoperative Doppler duplex sonography, and colour-coded Doppler sonography provide the oppurtunity to collect objective intraoperative data. Our data indicate that intraoperative vascular assessment facilitates the discrimination between infants who benefit from primary closure and those in whom a staged repair is the treatment of choice.
    Type of Medium: Electronic Resource
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  • 5
    Publication Date: 2013-05-09
    Description: For 3-D inversion of controlled-source electromagnetic (CSEM) data, increasing availability of high-performance computers enables us to apply inversion techniques that are theoretically favourable, yet have previously been considered to be computationally too demanding. We present a newly developed parallel distributed 3-D inversion algorithm for interpreting CSEM data in the frequency domain. Our scheme is based on a direct forward solver and uses Gauss–Newton minimization with explicit formation of the Jacobian. This combination is advantageous, because Gauss–Newton minimization converges rapidly, limiting the number of expensive forward modelling cycles. Explicit calculation of the Jacobian allows us to (i) precondition the Gauss–Newton system, which further accelerates convergence, (ii) determine suitable regularization parameters by comparing matrix norms of data- and model-dependent terms in the objective function and (iii) thoroughly analyse data sensitivities and interdependencies. We show that explicit Jacobian formation in combination with direct solvers is likely to require less memory than combinations of direct solvers and implicit Jacobian usage for many moderate-scale CSEM surveys. We demonstrate the excellent convergence properties of the new inversion scheme for several synthetic models. We compare model updates determined by solving either a system of normal equations or, alternatively, a linear least-squares system. We assess the behaviour of three different stabilizing functionals in the framework of our inversion scheme, and demonstrate that implicit regularization resulting from incomplete iterative solution of the model update equations helps stabilize the inversion. We show inversions of models with up to two million unknowns in the forward solution, which clearly demonstrates applicability of our approach to real-world problems.
    Print ISSN: 0956-540X
    Electronic ISSN: 1365-246X
    Topics: Geosciences
    Published by Oxford University Press on behalf of The Deutsche Geophysikalische Gesellschaft (DGG) and the Royal Astronomical Society (RAS).
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  • 6
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    In:  11th SAGA Biennial Technical Meeting & Exhibition 'Ancient Rocks to Modern Techniques' (Swaziland, South Africa 2009)
    Publication Date: 2020-02-12
    Keywords: 550 - Earth sciences
    Type: info:eu-repo/semantics/conferenceObject
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  • 7
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    In:  70. Jahrestagung der Deutschen Geophysikalischen Gesellschaft (DGG) (Bochum 2010)
    Publication Date: 2020-02-12
    Keywords: 550 - Earth sciences
    Type: info:eu-repo/semantics/conferenceObject
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  • 8
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    In:  Protokoll zum 23. Schmucker-Weidelt-Kolloquium für Elektromagnetische Tiefenforschung
    Publication Date: 2020-02-12
    Language: English
    Type: info:eu-repo/semantics/conferenceObject
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  • 9
    Publication Date: 2020-02-12
    Type: info:eu-repo/semantics/article
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  • 10
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    In:  Schmucker-Weidelt Colloquium on Deep Electromagnetic Sounding (Neustadt/ Weinstrasse, Germany 2011)
    Publication Date: 2020-02-12
    Keywords: 550 - Earth sciences
    Type: info:eu-repo/semantics/conferenceObject
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