A proposed dynamic dosing scheme to secure the target plasma drug concentrations based on the precision of the AUC estimate.
To reduce the number of blood samples necessary to estimate the patient's AUC (the area under the plasma drug concentration time-curve), various limited sampling strategies (LSSs) have been developed. We proposed a new LSS for busulfan, in which a curve that best approximates the measured data was searched for from a set of pre-generated theoretical plasma drug concentration time-curves. We evaluated this LSS and proved that it had virtually no bias and better precision compared with conventional LSSs. However, further study revealed that the precision of our new accurate LSS was still insufficient to secure the target concentration. To solve this problem, we proposed a new dosing scheme, in which the amount of dose was adjusted dynamically according to the estimated precision of the AUC estimator.
School of Allied Health Sciences, Kitasato University, Japan.
Harukazu
H
Tsuruta
Toyofumi
T
Wada
D018906:Antineoplastic Agents, Alkylating / Q000008:administration & dosage / Q000097:blood; D002066:Busulfan / Q000008:administration & dosage* / Q000097:blood*; D003198:Computer Simulation; D004360:Drug Therapy, Computer-Assisted / Q000379:methods*; D006801:Humans; D008657:Metabolic Clearance Rate; D008954:Models, Biological; D009369:Neoplasms / Q000097:blood* / Q000175:diagnosis / Q000188:drug therapy*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity
D018906:Antineoplastic Agents, Alkylating; D002066:Busulfan