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A METHOD OF DETERMINING INTRINSIC HEPATIC CLEARANCE FROM THE FIRST‐PASS EFFECT
Author(s) -
Bass L.,
Winkler K.
Publication year - 1980
Publication title -
clinical and experimental pharmacology and physiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.752
H-Index - 103
eISSN - 1440-1681
pISSN - 0305-1870
DOI - 10.1111/j.1440-1681.1980.tb00080.x
Subject(s) - blood flow , perfusion , hepatic veins , vein , portal vein , first pass effect , systemic circulation , medicine , chemistry , cardiology , pharmacokinetics
SUMMARY 1. The relation between systemic hepatic clearance, intrinsic hepatic clearance and hepatic blood flow is considered from the point of view of the sinusoidal perfusion (parallel tube) model of the liver. 2. It is shown how intrinsic hepatic clearance may be calculated, for substrates eliminated in the liver and the kidney only, from data obtained by introducing successively an oral and an intravenous dose (i.e., by using the first‐pass effect) without the clinically cumbersome catheterization of the liver vein. 3. The rate of hepatic blood flow is shown to follow from the same data.