Olivier Thys
Free University of Brussels
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Featured researches published by Olivier Thys.
Journal of Hepatology | 1995
Daniel Urbain; Vinciane Muls; Olivier Thys; Hamphrey Ham
In a 4-year survival study, we evaluated the prognostic value of the aminopyrine breath test and the Child-Turcotte-Pugh score in 190 alcoholic patients. Using aminopyrine breath test results, the patients were stratified into group 1 (aminopyrine breath test > 2%), group 2 (1% < or = aminopyrine breath test < 2%) and group 3 (aminopyrine breath test < 1%). Survival rates at 4 years were 68% in group 1, 35% in group 2 and 17% in group 3. Using the Child-Turcotte-Pugh score, survival rates at 4 years were 67% in Child-Turcotte-Pugh class A, 40% in class B and 7% in class C. To assess the value of aminopyrine breath test as an adjunct to Child-Turcotte-Pugh score in prognostic evaluation of patients with cirrhosis, two approaches have been used: a regression analysis using Coxs proportional hazard model by including the Child-Turcotte-Pugh score and aminopyrine breath test value, and the log-rank test to assess the prognostic value of aminopyrine breath test in each Child-Turcotte-Pugh class separately. The regression analysis showed that both parameters, the Child-Turcotte-Pugh score and the aminopyrine breath test results, were accepted in the model, suggesting that the aminopyrine breath test was still significantly related to survival once the Child-Turcotte-Pugh score had been entered into the model. Analysis of the prognostic value of the aminopyrine breath test in each Child-Turcotte-Pugh class separately indicated, however, that the contribution was negligible in the Child-Turcotte-Pugh class C.(ABSTRACT TRUNCATED AT 250 WORDS)
European Journal of Nuclear Medicine and Molecular Imaging | 1986
Daniel Urbain; Pierre Reding; Bernard Georges; Olivier Thys; Hamphrey Ham
The clinical value of thallium 201 per rectum scintigraphy in the work-up of patients with alcoholic liver disease was evaluated using data obtained in 104 patients. The 25th min ratio of heart to liver activities was used as an index of portal systemic shunting. This ratio was found to be normal in alcoholic patients with normal liver biopsy and also in those presenting only steatosis. It was slightly higher in patients with liver fibrosis and significantly higher values were observed in patients with liver cirrhosis. High values of the ratio were associated with a higher risk of portal systemic encephalopathy and/or gastrointestinal bleeding. The prognostic value of the test was supported by the fact that good correlations were observed between the ratio and widely accepted prognostic scores such as the Child score or the Orrego index. Moreover, high ratios were associated with an increased mortality risk at one year. We conclude that this simple test is interesting in the screening of cirrhotics at risk of encephalopathy, gastrointestinal hemorrhage, or early death.
Nuclear Medicine Communications | 1990
Daniel Urbain; Orner Jeghers; Olivier Thys; Jacques Vanderauwera; Hamphrey Ham
SummaryAminopyrine breath test was performed in 91 consecutive alcoholic cirrhotic patients in order to evaluate its clinical value in this group of patients. As compared with routine liver biochemical tests, aminopyrine breath test was found to be altered most frequently (93.5% of cases). A one-year follow-up was obtained in 69 patients. The one-year mortality rate was only 11% for values of aminopyrine breath test ≥ 2%, whereas it reached 53.5 for results inferior to 2%. The prognostic value of the test was not, however, different from that of the Child-Turcotte classification.
The American Journal of Gastroenterology | 1993
Daniel Urbain; Vinciane Muls; Elias Makhoul; Orner Jeghers; Olivier Thys; Hamphrey Ham
Gastrointestinal Endoscopy | 1992
Daniel Urbain; Vinciane Muls; Athanase Kiromera; Jacques Jeanmart; Philippe Janne; Marc Lemone; Olivier Thys
The Journal of Nuclear Medicine | 1993
Daniel Urbain; Vinciane Muls; Michel Dupont; Omer Jeghers; Olivier Thys; Hamphrey Ham
Acta Gastro-Enterologica Belgica | 1980
Pierre Reding; Olivier Thys; Thierry De Keyser
Archive | 1990
Daniel Urbain; Jacques Jeanmart; Marc Lemone; Athanase Kiromera; Daniel Van Daele; S. Sarkali; Olivier Thys; Stéphane De Wit
Archive | 1990
Athanase Kiromera; Philippe Hermans; Stéphane De Wit; Olivier Thys; Daniel Urbain
Acta Gastro-Enterologica Belgica | 1990
Daniel Urbain; Olivier Thys; Athanase Kiromera; Jean Rutsaert; Stéphane De Wit