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Liver stiffness indicates portal hypertension

Measuring liver stiffness using transient elastography can predict severe portal hypertension in patients with hepatitis C-related cirrhosis, according to a new study in the May issue of Hepatology, the official journal of the American Association for the Study of Liver Diseases (AASLD). Published by John Wiley & Sons, Inc., Hepatology is available online via Wiley InterScience at http://www.interscience.wiley.com/journal/hepatology.

As liver disease progresses, fibrosis leads to portal hypertension which causes potentially lethal complications such as variceal hemorrhage, ascites and portosystemic encephalopathy. Measuring the hepatic venous pressure gradient (HVPG) is the standard method used to assess portal pressure and predict its complications; however, the procedure is invasive, expensive, and requires technical expertise.

In search of another way to assess liver fibrosis and portal hypertension, researchers, led by Massimo Pinzani, MD, PhD, of the University of Florence, sought to evaluate transient elastography, a rapid, non-invasive technique to measure liver stiffness. They compared its accuracy in detecting portal hypertension and its complications with that of HVPG measurement.

Between March 1, 2005 and July 1, 2006, the researchers studied 61 consecutive patients with diagnosed or suspected cirrhosis from chronic HCV infection. Each patient underwent transient elastography to measure liver stiffness. Immediately afterward, they underwent HVPG measurement and liver biopsy. The researchers then analyzed the data and compared the diagnostic tools.

"Considering the whole patient population, a statistically significant, positive correlation between HVPG and liver stiffness measurement was found," they report. The correlation was excellent for HVPG values less than 10 or 12 mmHg, but not as good for greater HVPG values. They also noted a correlati
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Contact: Amy Molnar
amolnar@wiley.com
John Wiley & Sons, Inc.
1-May-2007


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