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Indian J Radiol Imaging. 2011 Oct;21(4):291-3. doi: 10.4103/0971-3026.90693.

Measurement of hepatic venous pressure gradient revisited: Catheter wedge vs balloon wedge techniques.

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1
Department of Radiology, Christian Medical College, Vellore, Tamil Nadu, India.

Abstract

AIMS:

To evaluate the accuracy of measurement of hepatic venous pressure gradient by catheter wedge as compared to balloon wedge (the gold standard).

MATERIALS AND METHODS:

Forty-five patients having a clinical diagnosis of intrahepatic portal hypertension were subjected to the two different types of pressure measurements (catheter wedge and balloon wedge) during transjugular liver biopsy under fluoroscopic guidance.

STATISTICAL ANALYSIS:

Spearman's rank correlation coefficient, Bland-Altman plot for agreement, and single measure intraclass correlation were used for analysis of data.

RESULTS:

There was a close correlation between the results obtained by both the techniques, with highly significant concordance (P < 0.0001). Hepatic venous pressure gradients as measured by the catheter wedge technique were either equal to or less than those obtained by the balloon wedge technique.

CONCLUSIONS:

The difference in hepatic venous pressure gradients measured by the two techniques is insignificant.

KEYWORDS:

Balloon wedge hepatic venous pressure; catheter wedge hepatic venous pressure; free hepatic venous pressure; hepatic venous pressure gradient

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