However, the marginally accepted low mean ratio(Obs/Pred) for ke in neonates, using software 1, indicate relatively high predicted values that are most probably attributed to high predicted clearance in this age group.
A mathematical model was developed to predict clearances from values for plasma flow Q(p), dialysate flow Q(d), ultrafiltration rate Q(f), filter size and the extent of solute binding to albumin.When hemofiltration was performed with Q(p) 150 mL/min and Q(f) 17 mL/min, clearance values were C PR) 1.0 +/- 0.1 mL/min; C IN) 3.7 +/- 0.5 mL/min; and C UREA) 14 +/- 1 mL/min.
For midazolam, all of the predicted clearance values were within 3-fold the in vivo clearance values.
The predicted clearance was within 3-fold of the observed in vivo value for 6 of the 15 (40%) drugs for CYP3A probe drugs.
The model described adequately the measurements with no apparent bias between observed and predicted clearance.
Combined with concentration curves, washout models are used for predicting clearance, as they conserve mass.
Based on the linear regression between exenatide clearance and creatinine clearance, predicted mean exenatide clearance for patients with severe RI (CrCL 10 30 ml min−1) ranged from 1.82 to 3.03 l h−1 .Figure 3 shows the simulated exenatide plasma concentration time profiles for several treatment regimens in patients with moderate RI or ESRD at steady state.
In most closely related studies, the combination of HLM and recombinant enzymes is implemented to predict in vivo clearance for high accuracy of in vitro-in vivo extrapolation [ 52– 52].
When exploring the ability of these parameters in predicting adequate lactate clearance, for the whole 97 paired samples the PcvaCO2/CavO2 ratio ROC analysis showed an area under the curve of 0.82 (95% confidence interval = 0.73 to 0.92, P <0.001), and a cutoff value of 1.4 had the best relationship between sensitivity (0.8) and specificity (0.75).
In one study, the reliability of an in vitro model of vancomycin clearance to predict drug clearance was demonstrated [ 20].
Postnatal age, GA, serum creatinine, and furosemide use independently predicted zidovudine clearance.
