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  • 1
    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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  • 2
    ISSN: 1435-5922
    Keywords: Key words: gastrorenal shunt ; paraesophageal veins ; portal-hypertensive gastropathy ; transhepatic portography
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract: We investigated whether extravariceal collateral pattern contributed to the development of portal-hypertensive gastropathy (PHG) before and after sclerotherapy. Ninety-nine patients with cirrhosis and large esophageal varices were examined in this retrospective study. They were divided into four groups according to transhepatic portographic findings: group A (with neither paraesophageal veins nor gastrorenal shunt; n = 46), group B (with paraesophageal veins; n = 27), group C (with gastrorenal shunt; n = 14), and group D (with paraesophageal veins and gastrorenal shunt; n = 12). To assess PHG, endoscopic examinations were carried out before and 1 week and 1 month after sclerotherapy. The severity of PHG was classified according to a modified McCormack's classification and scored as: absence, 0; mild, 1; severe, 2. There were no significant differences in age, sex, cause of cirrhosis, severity of liver dysfunction, and extent of esophageal varices in the four groups. The PHG score before sclerotherapy was significantly higher in group A than in either group C (P 〈 0.05) or group D patients (P 〈 0.05). The calculated, integrated incremental change in PHG score after sclerotherapy was significantly higher in group A than in group C (P 〈 0.01) and group D patients (P 〈 0.01). Although the integrated change in PHG score was lower in group B than in group A patients, the difference was not significant (P = 0.68). These results suggest that gastrorenal shunt, but not paraesophageal veins, may play a protective role in the development of PHG before and after sclerotherapy.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Digestive diseases and sciences 38 (1993), S. 2142-2143 
    ISSN: 1573-2568
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 1573-2568
    Keywords: intraclass correlation coefficient ; portal venous pressure ; wedged hepatic venous pressure ; portal hypertension ; vasoactive agents
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Hepatic venous catheterization is widely used to assess portal pressure. However, it remains unclear whether wedged hepatic venous pressure is a close indicator of portal venous pressure during vasoactive drug administration in nonalcoholic cirrhosis. To address this issue, we analyzed the data from our previous published studies. Forty patients with nonalcoholic cirrhosis (HBV infection in five, HCV infection in 28, and cryptogenic in seven) were available in this analysis. A vasoconstrictor (N=14), vasodilator (N=10), or combination (N=16) was administered. The agreement of the changes between portal and wedged hepatic venous pressures during pharmacological manipulation was assessed by an intraclass correlation coefficient. The intraclass correlation coefficient in each subgroup was more than 0.60 (0.62 in vasoconstrictor group, 0.87 in vasodilator group, and 0.73 in combination group). When the analysis was performed according to the cause of liver disease, the values were 0.67 in HBV infection, 0.73 in HCV infection, and 0.74 in cryptogenic cirrhosis. These results suggest that wedged hepatic venous pressure reflects portal venous pressure during vasoactive drug administration in patients with nonalcoholic cirrhosis.
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 1573-2568
    Keywords: gastric mucus generation ; hexosamine ; liver cirrhosis ; portal hypertension ; tetraprenylacetone
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract We have evaluated gastric mucus generation (study 1) and the effects of tetraprenylacetone on gastric mucus generation (study 2) in cirrhotic patients with portal hypertension. Study 1: Included were 50 noncirrhotics (group A), 25 cirrhotics without portal hypertension (group B), and 25 cirrhotics with portal hypertension (group C). The antrum, corpus, and fundus mucus generation was assessed by hexosamine concentration using biopsy specimens. In groups A and B, the antrum hexosamine concentration was significantly higher compared with the corpus (P〈0.01,P〈0.01) and the fundus (P〈0.01,P〈0.01). In contrast, the hexosamine concentration at each location was similar in group C. Furthermore, the antrum hexosamine concentration of group C was significantly lower compared with that of group A (P〈0.05). In study 2, a double-blind design, 300 mg of tetraprenylacetone was administered for four weeks in 10 cirrhotics with portal hypertension and placebo in 10. The regional hexosamine concentrations were measured before and after drug administration. Placebo administration did not change hexosamine concentration at each location. In contrast, tetraprenylacetone increased the antrum and corpus hexosamine concentration (P〈0.01,P〈0.05), although the fundus concentration did not change. These data suggest that cirrhotics with portal hypertension have reduced gastric antral mucus generation and tetraprenylacetone normalizes this.
    Type of Medium: Electronic Resource
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  • 6
    ISSN: 1573-2568
    Keywords: portal circulation ; echo Doppler ; plasma noradrenaline concentration ; isotonic exercise
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract We examined the relationship between portal venous blood flow and sympathoadrenergic activation after muscle exercise. For this purpose, we used echo Doppler and measured plasma noradrenaline concentration before and after mild (7 metabolic units,N=8) and maximal exercise (14 metabolic units,N=8) in 16 patients without significant disease. Portal venous flow did not change after mild exercise. In contrast, a significant reduction in portal venous flow was observed after maximal exercise (P〈0.01). This was due to reductions in both cross-sectional area of the portal vein (P〈0.01) and portal venous velocity (P〈0.01). Overall, there were significant inverse relationships between the change in plasma noradrenaline concentration and that in cross-sectional area of the portal vein [r=−0.44,P〈0.01 (absolute change);r=−0.47,P〈0.01 (relative change)], that in portal venous velocity (r=−0.63,P〈0.01;r=−0.61,P〈0.01), and that in portal venous flow (r=−0.54,P〈0.01;r=− 0.59,P〈0.01). These results suggest that the reduction in portal venous flow after exercise is related to the degree of sympathoadrenergic activation. This reduction may be due mainly to splanchnic vasoconstriction.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Digestive diseases and sciences 43 (1998), S. 1695-1696 
    ISSN: 1573-2568
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 8
    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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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Digestive diseases and sciences 38 (1993), S. 1563-1564 
    ISSN: 1573-2568
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 10
    ISSN: 1573-2568
    Keywords: portal hypertensive gastropathy ; laser Doppler flowmetry ; propranolol ; gastrin ; pepsinogen I
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Gastric mucosal hyperemia associated with elevated serum gastrin level has been suggested in cirrhotic patients with portal hypertensive gastropathy (PHG). Clinical evidence has shown that these patients may benefit from propranolol administration. The aim of this study was to investigate effect of propranolol on gastric mucosal perfusion and serum gastrin level in cirrhotic patients with portal hypertensive gastropathy. Gastric mucosal perfusion was assessed by laser Doppler flowmetry. Measurements were performed under basal conditions and after observer-blind administration of propranolol (30–60 mg/day,N=9) or placebo (N=9) for seven days. Placebo had no effect on either gastric mucosal perfusion or serum gastrin level. In contrast, propranolol administration significantly decreased both antrum gastric mucosal perfusion (from 0.88±0.28 to 0.73±0.26 V,P〈0.05) and corpus gastric mucosal perfusion (from 0.94±0.35 to 0.78±0.25 V,P〈0.05). However, this drug had no effect on serum gastrin level. We conclude that chronic propranolol administration in cirrhotic patients with portal hypertensive gastropathy may reduce gastric mucosal perfusion without changing serum gastrin level.
    Type of Medium: Electronic Resource
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