Pharmacokinetics of Melagatran and the Effect on Ex Vivo Coagulation Time in Orthopedic Surgery Patients Receiving Subcutaneous Melagatran and Oral Ximelagatran: A Population Model Analysis

Ximelagatran, an oral direct thrombin inhibitor, is rapidly bioconverted to melagatran, its active form. The objective of this population analysis was to characterise the pharmacokinetics of melagatran and its effect on activated partial thromboplastin time (APTT), an ex vivo measure of coagulation time, in orthopaedic surgery patients sequentially receiving subcutaneous melagatran and oral ximelagatran as […]

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A Population Pharmacokinetic/Pharmacodynamic Analysis of Repeated Measures Time-to-event Pharmacodynamic Responses: The Antiemetic Effect of Ondansetron

This paper presents and illustrates methodology for specifying, estimating, and evaluating a predictive model for repeated measures time-to-event responses. The illustrative example specifies a model of the antiemetic effect vs. concentration relationship for the 5-HT3 antagonist ondansetron in the human ipecac model for emesis. A key part of this model is a time-dependent log hazard […]

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