modelFentanyl_3C
Extends from Pharmacolibrary.Pharmacokinetic.Models.PK_3C.
Information
Fentanyl is a potent synthetic opioid used to manage severe pain and as an anesthetic adjunct during surgery. After intravenous administration, it rapidly distributes into highly perfused organs—such as the brain, heart, lungs, and kidneys—while also partitioning more slowly into
poorly perfused tissues like fat and muscle. Over time, both tissue groups release fentanyl back into the plasma. The pharmacokinetics of fentanyl can be captured by the three-compartment model in this example, in which the “peripheral” and “peripheral2” compartments represent highly and poorly perfused tissues, respectively.
Simulation of 12h fentanyl pharmacokinetics in central, highly perfused tissue (perihperal) and slowly perfused tissues (fat, muscle). Concentration in compartments in log-scale.
References:
[1] Kaneda, Kotaro and Tae-Hyung Han (2009-09). “Comparative population pharmacokinetics of fentanyl using non-linear mixed effect modeling: burns vs. non-burns”. en. In: Burns 35.6, pp. 790–797. ISSN: 0305-4179,1879-1409. DOI: 10.1016/j.burns.2008.12.006. URL: http://dx.doi.org/10.1016/j.burns.2008.12.006
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Modelica.Units.SI.Mass | weight (from PK_1C) | 75 | patient weight (kg) |
| Modelica.Units.SI.SpecificVolume | VdPerKg (from PK_1C) | 0.9 | Volume of distribution (L/kg) |
| Modelica.Units.SI.MassFraction | F (from PK_1C) | 0.8 | bioavailiability (0-1) |
| Pharmacolibrary.Types.Clearance | Cl (from PK_1C) | 20 | clearance |
| Modelica.Units.SI.Time | adminTime (from PK_1C) | 60 | first administration time (s) |
| Modelica.Units.SI.Time | adminDuration (from PK_1C) | 600 | administration duration (s) |
| Modelica.Units.SI.Time | adminPeriod (from PK_1C) | 8*60*60 | period of administration (default 8 hours)(s) |
| Pharmacolibrary.Types.Mass | adminMass (from PK_1C) | 1000 | administration mass (mg) |
| Integer | adminCount (from PK_1C) | 8 | number of dose administered (1) |
| Pharmacolibrary.Types.Volume | Vd (from PK_1C) | VdPerKg*weight | Volume of distribution (m3) |
| Pharmacolibrary.Types.MassConcentration | Cmin (from PK_1C) | 0.004 | minimal therapeutic range |
| Pharmacolibrary.Types.MassConcentration | Cmax (from PK_1C) | 0.008 | minimal therapeutic range |
| Pharmacolibrary.Types.MassConcentration | Ctox_peak (from PK_1C) | 0.012 | toxicity peak level |
| Pharmacolibrary.Types.MassConcentration | Ctox_trough (from PK_1C) | 0.006 | toxicity trough level |
| Pharmacolibrary.Types.Volume | Vdp (from PK_2C) | VdpPerKg*weight | Volume of distribution (m3) |
| Modelica.Units.SI.SpecificVolume | VdpPerKg (from PK_2C) | 0.9 | Volume of distribution peripheral(l/kg) |
| Pharmacolibrary.Types.Clearance | k12 (from PK_2C) | 1 | intercompartmental C-P clearance |
| Pharmacolibrary.Types.Clearance | k21 (from PK_2C) | 1 | intercompartmental P-C clearance |
| Pharmacolibrary.Types.Volume | Vdp2 (from PK_3C) | Vdp2PerKg*weight | Volume of distribution (m3) |
| Modelica.Units.SI.SpecificVolume | Vdp2PerKg (from PK_3C) | 0.9 | Volume of distribution peripheral 2 (l/kg) |
| Pharmacolibrary.Types.VolumeFlowRate | k13 (from PK_3C) | 1 | intercompartmental 1-3 clearance (l/min) |
| Pharmacolibrary.Types.VolumeFlowRate | k31 (from PK_3C) | 1 | intercompartmental 3-1 clearance (l/min) |
Connectors
| Type | Name | Default | Description |
|---|---|---|---|
| Types.ConcentrationOutput | C_central (from PK_1C) | ||
| Interfaces.ConcentrationPort_b | centralCPort (from PK_1C) | ||
| Interfaces.ConcentrationPort_b | peripheralCPort (from PK_2C) | ||
| Pharmacolibrary.Types.ConcentrationOutput | C_peripheral1 (from PK_2C) | ||
| Interfaces.ConcentrationPort_b | perihperal2Cport (from PK_3C) | ||
| Pharmacolibrary.Types.ConcentrationOutput | C_peripheral2 (from PK_3C) |
Components
| Type | Name | Default | Description |
|---|---|---|---|
| Pharmacokinetic.NoPerfusedTissueCompartment | central (from PK_1C) | ||
| Pharmacokinetic.ClearanceDrivenElimination | elim (from PK_1C) | ||
| Sources.PeriodicDose | periodicDose (from PK_1C) | ||
| Modelica.Units.SI.Time | t1_2 (from PK_1C) | elimination half-life | |
| Pharmacolibrary.Pharmacokinetic.TransferFirstOrderNonSym | transfer (from PK_2C) | ||
| Pharmacolibrary.Pharmacokinetic.NoPerfusedTissueCompartment | peripheral (from PK_2C) | ||
| Pharmacolibrary.Pharmacokinetic.NoPerfusedTissueCompartment | peripheral1 (from PK_3C) | ||
| Pharmacolibrary.Pharmacokinetic.TransferFirstOrderNonSym | transfer1 (from PK_3C) |