modelThiopental
Extends from Pharmacolibrary.Drugs.ATC.N.N05CA19.
Information
| name: | Thiopental | |
| ATC code: | N05CA19 | route: | intravenous |
| compartments: | 3 | |
| dosage: | 250 | mg |
| volume of distribution: | 2.5 | L |
| clearance: | 3.5 | mL/kg/min |
| other parameters in model implementation | ||
Thiopental, also known as thiopental sodium or Pentothal, is a rapid-onset short-acting barbiturate used historically for induction of anesthesia and for short surgical procedures. It is now largely discontinued in clinical practice in many countries due to alternatives, but is still used in some settings and for veterinary anesthesia.
Pharmacokinetics
Pharmacokinetic parameters reported in healthy adult volunteers following intravenous bolus administration.
References
Stanski, DR, & Maitre, PO (1990). Population pharmacokinetics and pharmacodynamics of thiopental: the effect of age revisited. Anesthesiology 72(3) 412–422. DOI:10.1097/00000542-199003000-00003 PUBMED:https://pubmed.ncbi.nlm.nih.gov/2310020
Huynh, F, et al., & Ensom, MH (2009). A critical review: does thiopental continuous infusion warrant therapeutic drug monitoring in the critical care population?. Therapeutic drug monitoring 31(2) 153–169. DOI:10.1097/FTD.0b013e318196fb9f PUBMED:https://pubmed.ncbi.nlm.nih.gov/19177032
Eilers, H, & Niemann, C (2003). Clinically important drug interactions with intravenous anaesthetics in older patients. Drugs & aging 20(13) 969–980. DOI:10.2165/00002512-200320130-00002 PUBMED:https://pubmed.ncbi.nlm.nih.gov/14561101
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) |
Revisions
- 06/2025 Tomas Kulhanek, generated model from data extracted from PUBMED, DrugBank and LLM(GPT4.1)