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  • 1
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Science Ltd
    Alimentary pharmacology & therapeutics 18 (2003), S. 0 
    ISSN: 1365-2036
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Variceal haemorrhage is a common medical emergency with a high mortality (30–50%). Adequate resuscitation is vital, and once stabilised the patient should be moved to a high-dependency area. Antibiotics reduce mortality, and the vasoactive drug terlipressin should be administered if early endoscopy is unavailable. Early endoscopy is essential both to make the diagnosis and to allow therapeutic measures to be performed. The evidence suggests that variceal band ligation is the most effective therapy for oesophageal varices. If gastric varices are found at the index endoscopy the evidence at present is inadequate to be certain which is the best treatment, but both endoscopic therapy with cyanoacrylate or thrombin and transjugular intrahepatic portosystemic stent shunt (TIPSS) have been reported to be of benefit. When initial treatments fail, rescue therapy should be initiated. Most authorities agree that TIPSS is the rescue therapy of choice. Many questions remain concerning the treatment of acute variceal bleeding, particularly the ideal therapy for gastric varices and the role of combination vasoactive and endoscopic therapy. Randomised controlled trials are required to answer these important issues.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1365-2036
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Carvedilol is a non-selective vasodilating β-blocker with weak α1 receptor antagonism. Recent studies have demonstrated its potential as a portal hypotensive agent.〈section xml:id="abs1-2"〉〈title type="main"〉Aim:To assess the haemodynamic effects and patient tolerability of the acute and chronic administration of low-dose carvedilol.〈section xml:id="abs1-3"〉〈title type="main"〉Methods:Haemodynamic measurements were performed in ten cirrhotic patients before and 1 h after the administration of 12.5 mg oral carvedilol. The study was repeated 4 weeks after daily administration of 12.5 mg carvedilol.〈section xml:id="abs1-4"〉〈title type="main"〉Results:After acute administration of carvedilol, there was a 23% reduction in the hepatic venous pressure gradient from 16.37 ± 2.14 to 12.56 ± 3.91 mmHg (P 〈 0.05), with significant falls in the heart rate, mean arterial pressure and cardiac output. Chronic administration resulted in a further fall in the hepatic venous pressure gradient from a baseline of 16.37 ± 0.71 to 9.27 ± 1.40 mmHg (P 〈 0.001) with the mean arterial pressure being unaffected. The drug was well tolerated with only one patient experiencing asymptomatic hypotension.〈section xml:id="abs1-5"〉〈title type="main"〉Conclusions:The results show that low-dose carvedilol is an extremely potent portal hypotensive pharmacological agent, and is worthy of further investigation in large randomized trials to assess its effect in preventing variceal haemorrhage.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Oxford UK : Blackwell Science Ltd
    Alimentary pharmacology & therapeutics 15 (2001), S. 0 
    ISSN: 1365-2036
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: The development of varices is a major complication of cirrhosis, and variceal haemorrhage has a high mortality. There have been major advances in the primary and secondary prevention of variceal haemorrhage over the last 20 years involving endoscopic, radiological and pharmacological approaches. This review concentrates principally on drug therapy, particularly on the numerous haemodynamic studies. Many of these drugs have not been studied in clinical trials, but provide data about the underlying pathogenesis of portal hypertension.Also covered in this review are the randomized controlled trials and meta-analyses that involve a large number of patients. These trials involve relatively few drugs such as non-selective beta-blockers and nitrates. Correlations between haemodynamic and clinical parameters are discussed.Despite the recent increase in the use of alternative endoscopic therapies, an effective and well tolerated drug remains a clinically important research goal.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Solid State Electronics 35 (1992), S. 1185-1193 
    ISSN: 0038-1101
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Journal of applied electrochemistry 8 (1978), S. 71-74 
    ISSN: 1572-8838
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Electrical Engineering, Measurement and Control Technology
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Astrophysics and space science 138 (1987), S. 315-321 
    ISSN: 1572-946X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract It has been shown that the only steady, inviscid, magnetogeostrophic rotational circulation-preverving motion whose magnetic field line pattern is that of the irrotational motion is a complex-lamellar motion whose magnetic field magnitude bears a constant value on a magnetic field line.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Astrophysics and space science 141 (1988), S. 415-419 
    ISSN: 1572-946X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract A theoretical analysis based on the equations of magnetofluid-dynamics is undertaken, in order to completely classify the geometry of the motion admitted by this pattern.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Astrophysics and space science 143 (1988), S. 63-71 
    ISSN: 1572-946X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract This paper contains a geometric study and solutions of the electromagneto-geostrophic flows, and spatially the geometrical treatments of magnetic field lines are discussed.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Astrophysics and space science 139 (1987), S. 413-419 
    ISSN: 1572-946X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract This paper has been presented the geometric study and solutions of the electromagnetogeostrophic flows, and spatially the geometry of magnetic and current lines are discussed.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Astrophysics and space science 137 (1987), S. 23-31 
    ISSN: 1572-946X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract It is proved that the only circulation preserving magnetogeostrophic flows whose current density is lamellar, and bears a constant on a current density vector have (1) a plane motion of constant current density (on which certain unsteady potential motions may be superposed) and (2) a particular circular helical motion.
    Type of Medium: Electronic Resource
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