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  • 1
    ISSN: 1432-2277
    Keywords: Selective bowel decontamination, liver transplantation ; Liver transplantation, selective bowel decontamination ; Infections, liver transplantation, serective bowel decontamination
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Bacterial and fungal infections are a major cause of morbidity and mortality after orthotopic liver transplantation. In the immunocompromised host, infections are thought to arise from the gut, which is almost always colonized with potential pathogens. Using oral selective bowel decontamination (SBD), potential pathogens can be eradicated from the gut and infections prevented. In this catamnestic study we have reviewed gastrointestinal colonization, bacterial and fungal infections, and bacterial resistance to standard antibiotics in our first 206 liver transplant patients while under SBD. With few exceptions, gram-negatives were eradicated from the gastrointestinal tract and secondary colonization was inhibited. In spite of unsatisfactory elimination of Candida, probably because nystatin doses were too low, Candida infections were rare (n=4) and none was fatal. One and two-year survival rates were 93% and 92%, respectively. The bacterial and fungal infection rate was 27.8% with an infection-related mortality of 1.95%. Infections with aerobic grampositive bacteria prevailed and only 11 gram-negative and 11 fungal infections occurred; among the latter, Aspergillus and Mucor were the most serious and responsible for three of the six deaths in this series. With regard to the development of resistance, we found an increasing number of enterococci and coagulase-negative staphylococci resistant to ciprofloxacin and imipenem, respectively, but unlikely as a consequence of SBD.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1432-055X
    Keywords: Schlüsselwörter Akutes Leberversagen ; Extrakorporale Leberersatzverfahren ; Filtrationstechniken ; Hybride Leberunterstützungssysteme ; Zellkultur ; Klinische Studien ; Keywords Acute liver failure ; Extracorporeal liver assist device ; Filtration techniques ; Hybrid liver assist device ; Cell culture ; Clinical trials
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary The acute liver failure (ALF) is a complex syndrome resulting from loss of synthetic and metabolic functions of the liver. Despite recent advances in intensive care medicine patients with severe ALF have a very high mortality and the orthotopic liver transplantation still remains the only proven effective treatment of ALF. Numerous attempts have been made to improve survival by using various extracorporeal support techniques, but none of these therapeutic approaches was able to increase the survival rate. Liver support systems based on detoxification procedures only could not influence the deleterious course of the disease. It is certain that an ideal liver support system should be capable to fulfil the liver's essential synthetic and metabolic functions as well as detoxification and excretion. Over the last years the development of hybrid liver assist devices has aimed at replacing these liver functions and therefore might give an advantage over earlier systems based on detoxification techniques only. This article gives a short review of the various liver support systems and focuses then on the hybrid liver support systems, their construction and the remaining problems after the first clinical applications.
    Notes: Zusammenfassung Das akute Leberversagen (ALV) ist trotz der Weiterentwicklung der Intensivmedizin mit einer hohen Sterblichkeit belastet. Nur durch die orthotope Lebertransplantation gelang es, die Überlebensraten signifikant zu verbessern. Aufgrund des Spenderorganmangels und der reduzierten Lebenserwartung nach Transplantationen wird seit Jahren versucht, die Leberfunktion im ALV durch verschiedene extrakorporale Verfahren zu ersetzen. Da Filtrationsverfahren mit rein entgiftender Funktion zu keiner Steigerung der Überlebensrate führten, werden seit einiger Zeit sogenannte hybride Leberunterstützungssysteme erprobt. Hierbei geht man davon aus, daß eine Leberzellkultur im künstlichen System die vielfältigen Synthese-, Biotransformations- und Stoffwechselaufgaben der Leber am besten ersetzen kann. Der folgende Artikel gibt zunächst einen Überblick über das Spektrum der bisher eingesetzten Leberersatzverfahren und konzentriert sich dann auf die Grundlagen, Probleme und ersten klinischen Anwendungen hybrider Leberunterstützungssysteme.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1432-2277
    Keywords: Liver transplantation ; Catecholamines ; Hepatic venous oxygenation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The purpose of this study was to determine the effects of vasoactive treatment with dopamine (DO), dopexamine (DX), and dobutamine (DOB) on hemodynamics, oxygen transport and hepatic venous oxygen saturation (SvhO2) after orthotopic liver transplantation (OLT). A pulmonary artery catheter was inserted into the right hepatic vein of 17 OLT patients. Timed infusion of DO, DX, and DOB was performed at the following rates: DO at 4 and 8 μg/kg per minute, and DOB at 5 and 10 μg/kg per minute. Hemodynamics, oxygen transport variables, and SvhO2 were assessed. Each catecholamine induced a significant increase in cardiac index, oxygen delivery, and SvhO2. Mean arterial pressure was increased during DO and DOB, but significantly reduced during DX. Each inotrope increased oxygen delivery in parallel with SvhO2, suggesting a corresponding increase in hepatic oxygen supply. Therefore, it appears that each vasoactive drug may be utilized in OLT patients to provide oxgen delivery without impairment of splanchnic oxygenation.
    Type of Medium: Electronic Resource
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