Thomson et al. 2009

Development and evaluation of vancomycin dosage guidelines designed to achieve new target concentrations

Journal of Antimicrobial Chemotherapy · 10.1093/jac/dkp085

Structure

A two-compartment model, driven by weight and creatinine clearance.

Study population

General and Mixed patients — Scotland, United Kingdom and Europe. Fitted to 398 patients and 1,557 concentration observations.

Covariate As reported
Age 66 (16–97) yr
Weight 72 (40–159) kg
CrCl 64 (12–216) mL/min
SCr 1.11 (0.34–6.48) mg/dL

Reported as the source publication gives them — mean ± SD, or median with range or interquartile range.

Equations

The model's structural parameters as Chorus implements them.

CL=2.99(1+0.0154(CrCl66))CL = 2.99 \cdot (1 + 0.0154 \cdot (CrCl - 66))V1=0.675WeightV_1 = 0.675 \cdot WeightV2=0.732WeightV_2 = 0.732 \cdot WeightQ=2.28Q = 2.28
LaTeX source
CL = 2.99 \cdot (1 + 0.0154 \cdot (CrCl - 66))
V_1 = 0.675 \cdot Weight
V_2 = 0.732 \cdot Weight
Q = 2.28

Implementation notes

Two-compartment model from routine TDM data. CrCl capped at 150 mL/min (capped Thomson) — not in the original 2009 model.

Simulation settings

Models

selected

Dose candidates (mg)

Interval candidates (h)

Demographics

Physical characteristics.

kg
cm
yr