modelAlfentanil
Extends from Pharmacolibrary.Drugs.ATC.N.N01AH02.
Information
| name: | Alfentanil | |
| ATC code: | N01AH02 | route: | intravenous |
| compartments: | 2 | |
| dosage: | 50 | mg |
| volume of distribution: | 0.6 | L |
| clearance: | 3.2 | mL/min/kg |
| other parameters in model implementation | ||
Alfentanil is a potent, short-acting synthetic opioid analgesic belonging to the phenylpiperidine class. It is primarily used as an adjunct to anesthesia, for induction and maintenance of analgesia during surgical procedures requiring analgesia and sedation. Approved for clinical use, it is commonly administered intravenously due to its rapid onset and short duration of action.
Pharmacokinetics
Healthy adults, single intravenous bolus dose, pharmacokinetics based on two-compartment model.
References
Ziesenitz, VC, et al., & van den Anker, JN (2018). Pharmacokinetics of Fentanyl and Its Derivatives in Children: A Comprehensive Review. Clinical pharmacokinetics 57(2) 125–149. DOI:10.1007/s40262-017-0569-6 PUBMED:https://pubmed.ncbi.nlm.nih.gov/28688027
Medina-Aymerich, L, et al., & Balevic, SJ (2025). Population Pharmacokinetics of Alfentanil in Children. Journal of clinical pharmacology None –. DOI:10.1002/jcph.70044 PUBMED:https://pubmed.ncbi.nlm.nih.gov/40377652
Jenstrup, M, et al., & Wiberg-Jørgensen, F (1992). Alfentanil infusion in total intravenous anaesthesia (TIVA). Population pharmacokinetics fails to predict plasma concentration of alfentanil. Acta anaesthesiologica Scandinavica 36(8) 846–847. DOI:10.1111/j.1399-6576.1992.tb03576.x PUBMED:https://pubmed.ncbi.nlm.nih.gov/1466226
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 |
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) |
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) |
Revisions
- 06/2025 Tomas Kulhanek, generated model from data extracted from PUBMED, DrugBank and LLM(GPT4.1)