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  • 1
    Electronic Resource
    Electronic Resource
    A transparent over-tube for endoscopic injection sclerotherapy and results in patients with esophageal varices (1987)
    Springer
    Surgery today 17 (1987), S. 256-262 
    Details
    ISSN: 1436-2813
    Keywords: injection sclerotherapy ; esophageal varices ; doublelumened over-tube
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract This report describes our data regarding repeated injection sclerotherapy using a newly designed over-tube. We treated 17 consecutive patients with esophageal varices, (3 acute, 6 elective and 8 prophylactic). An intravariceal injection of 5 per cent ethanolamine oleate was administered, using a newly designed transparent over-tube containing a second lumen for a flexible injection needle. This over-tube provides an easier, safer, shorter-in-time method of sclerosing esophageal varices. One of the 17 patients died as a result of liver failure associated with advanced cirrhosis and a concomitant hepatoma. Eradication of esophageal varices was attained in the remaining 16 patients, after an average of 5.0 injections over an average period of 5.8 weeks (range: 3–7 injections during 3–11 weeks). No complications, such as esophageal perforation or aspiration pneumonia were encountered. Recurrent variceal bleeding has not occurred during the 9 months follow-up.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02470697
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Esophageal transection may well be the approach of choice for patients with portal venous obstruction and esophageal varices (1989)
    Springer
    Surgery today 19 (1989), S. 418-423 
    Details
    ISSN: 1436-2813
    Keywords: extrahepatic portal venous obstruction ; esophageal varices ; shunts ; direct interruption
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Thirty patients with esophageal varices, portal venous obstruction and a histologically proven normal liver underwent either one of 2 different types of surgery. Shunt surgery was performed on 20 patients: 9 had a mesocaval shunt, 3, a splenorenal shunt, 4, a left gastric venacaval shunt, and 4, a distal splenorenal shunt. Conversely, direct interruption was performed on the other 10 patients: 6 underwent an esophageal transection, and 4 underwent a resection of the proximal stomach. Re-hemorrhage occurred in 7 of the former 20 patients but not in any of the 10 on whom the direct interruption method was used. In 6 of these 7 patients who experienced rebleeding, subsequent direct interruption surgery led to control of the bleeding. One patient died of a variceal hemorrhage one month postoperatively. The total 10 year cumulative survival rate was 86.3 per cent. In the light of these findings, we believe that methods of direct interruption, such as esophageal transection, may well be the approach of choice for patients with esophageal varices caused by extrahepatic portal venous obstruction.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02471622
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    A brief study of the supercritical fluid chromatographic behavior of lanthanide β-diketonates (1994)
    Weinheim : Wiley-Blackwell
    Journal of High Resolution Chromatography 17 (1994), S. 603-606 
    Details
    ISSN: 0935-6304
    Keywords: Supercritical fluid chromatography ; Lanthanide β-diketonates ; Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The chromatographic behaviors of lanthanide chelates of acetylacetone (ACAC), trifluoroacetylacetone (TFA), thenoyltrifluoroacetone (TTA), dipivaloylmethane (THD), 6,6,7,7,8,8,8-heptafluoro-2,2-dimethyl-3,5-octanedione (FOD), and the thenoyltrifluoroacetonepyridine (TTA·Py) adduct were investigated using packed column supercritical fluid chromatography. Mobile phases consisting of neat and alcohol modified CO2 were used with a phenyl packed stationary phase. Lanthanide complexes of ACAC, THD, and FOD were shown to have better chromatographic performance compared to the corresponding chelates with TFA, TTA, and TTA·Py. In particular, TTA complexes such as Eu(TTA)3 showed characteristic thermal decomposition in the mobile phase at elevated temperature. In addition, retention behavior was found to be a temperature dependent function of volatility and solubility for all chelates studied.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jhrc.1240170808
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Separation of geometric isomers of metal β-diketonates by supercritical fluid chromatography (1993)
    Weinheim : Wiley-Blackwell
    Journal of High Resolution Chromatography 16 (1993), S. 372-375 
    Details
    ISSN: 0935-6304
    Keywords: Supercritical fluid chromatography (SFC) ; Metal β-diketonates ; Geometric isomer separation ; Trifluoroacetylacetone ; Thenoyltrifluoroacetone ; Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The separation of the geometric isomers of chromium and rhodium chelates of trifluoroacetylacetone and thenoyltrifluor-oacetone was investigated using packed column supercritical fluid chromatography. Mobile phases consisting of neat and alcohol-modified carbon dioxide were used, and the most favorable isomeric resolution was obtained with a phenyl stationary phase. The chromatographic performance was better for chelates with trifluoroacetylacetone than for the corresponding chelates with thenoyltrifluoroacetone. Chromatographic peak area analysis of the metal chelates investigated showed appropriate isomeric concentrations in the final diastereomeric products resulting from the synthetic procedures.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jhrc.1240160608
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    Paper (German National Licenses)
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