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Estimating time to steady state using the effective rate of drug accumulation
Author(s) -
Panebianco Deborah L.,
Maes Andrea
Publication year - 2011
Publication title -
pharmaceutical statistics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.421
H-Index - 38
eISSN - 1539-1612
pISSN - 1539-1604
DOI - 10.1002/pst.404
Subject(s) - dosing , steady state (chemistry) , confidence interval , pharmacokinetics , plasma concentration , drug , interval (graph theory) , time point , statistics , mathematics , pharmacology , chemistry , medicine , physics , combinatorics , acoustics
Unless all of a drug is eliminated during each dosing interval, the plasma concentrations within a dosing interval will increase until the time course of change in plasma concentrations becomes invariant from one dosing interval to the next, resulting in steady state. A simple method for estimating drug concentration time to steady state based on multiple dose area under the plasma concentration–time curve and effective rate of drug accumulation is presented. Several point estimates and confidence intervals for time to 90% of steady state are compared, and a recommendation is made on how to summarize and present the results. Copyright © 2009 John Wiley & Sons, Ltd.