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  • 1
    ISSN: 1573-2568
    Keywords: portal blood flow ; orthostasis ; liver cirrhosis ; noradrenaline ; Doppler flowmetry
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract We studied portosystemic hemodynamic responsiveness after 1 min orthostasis in nine patients with cirrhosis and nine age-matched normal subjects. Orthostasis increased diastolic arterial pressure, which is a close indicator of arterial tone, in normal subjects (+17%,P〈0.01). In contrast, no significant change in diastolic arterial pressure was observed in patients with cirrhosis (−3%, NS). The increase in heart rate was less in patients with cirrhosis than in normal subjects (+15% vs +28%,P〈0.05). Orthostasis also decreased portal blood flow, which was assessed by an echo-Doppler flowmetry, in normal subjects (−27%,P〈0.01), but in patients with cirrhosis it was not modified (−3%, NS). Plasma noradrenaline concentration showed similar increase in both groups (normal vs cirrhosis; +61% vs +55%, NS). Although the change in plasma noradrenaline concentration was related with that in diastolic arterial pressure (r=0.71,P〈0.05) and inversely with that in portal blood flow (r=−0.69,P〈0.05) in normal subjects, no such significant correlation was found in patients with cirrhosis. We conclude that (1) a reduced hemodynamic responsiveness to sympathetic stimulation exists on both systemic and portohepatic vascular beds and (2) such a blunted baroreflex function is probably located at the receptor or effector level in patients with cirrhosis.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1435-5922
    Keywords: Key words: esophageal varices ; endoscopic injection variceal sclerotherapy ; endoscopic variceal ligation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract: Endoscopic variceal ligation therapy (EVL) seems to be a more effective and safer method than endoscopic injection variceal sclerotherapy (EVS) for treating bleeding esophageal varices. However, EVL may entail a higher recurrence rate than EVS. The aim of this study was to examine whether EVL combined with low-dose EVS reduced the recurrence rate compared to treatment with EVL alone and reduced the complication rate compared to treatment with EVS alone. In this prospective study, 59 patients with cirrhosis and high-risk (F2 or F3, red color sign ++ or +++) esophageal varices were enrolled. They were randomly assigned to an EVS group (n = 18), an EVL group (n = 20), and a combination EVL plus low-dose EVS group (n = 21). After the eradication of varices, follow-up endoscopic examinations were carried out for 24 months to determine the recurrence of varices. Complications, e.g., severe dysphagia, fever, renal dysfunction and pleuritis were also evaluated. The recurrence-free rate was significantly lower in the EVL group (60% at 24 months) than in either the EVS group (90%, P 〈 0.05) or the combination group (88%, P 〈 0.05). However, no significant difference was found between the EVS group and the combination group. The complication rate was significantly higher in the EVS group (50%) than in either the EVL group (5%, P 〈 0.01) or the combination group (10%, P 〈 0.01). The combination therapy seems to be useful to improve the benefits achieved with EVL alone and to reduce the harmful effects induced by EVS alone. EVL plus low-volume EVS is advisable in the treatment of high-risk esophageal varices.
    Type of Medium: Electronic Resource
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