Estimation of Hepatic Sinusoid Pressure by Means of Venous Catheters and Estimation of Portal Pressure by Hepatic Vein Catheterization

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Abstract
Hepatic sinusoid pressure in the dog was estimated as the midpoint between pressures measured simultaneously through end hole venous catheters wedged into a portal vein branch and a hepatic vein tributary. The avg. value of sinusoid pressure, so obtained, was 11.5 cm. H2O when the avg. free portal vein pressure was 13 cm. H2O. Pressure in the occulded hepatic vein tributary was found to be constantly higher than free portal vein pressure by 1-3 cm. H2O. Thus, it may be possible to estimate portal vein pressure in intact subjects by means of a catheter wedged into a hepatic vein tributary.
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