Evaluation of SLOG/TCI-III pediatric system on target control infusion of propofol

Wan-hua Yang1, Hong-bin Gu, Bing Chen

  • 1Department of Pharmacy, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China. yangwanhuaywh@sina.com

Insights

The SLOG/TCI-III system for propofol infusion in children shows acceptable performance. This target-controlled infusion system demonstrated a median performance error (MDPE) of 10% and median absolute performance error (MDAPE) of 22%.

Area of Science:

  • Anesthesiology
  • Pharmacokinetics
  • Pediatric Medicine

Background:

  • The SLOG/TCI-III system is a target-controlled infusion model adapted for pediatric propofol administration.
  • Previous models were based on local pediatric populations.

Purpose of the Study:

  • To evaluate the performance of the SLOG/TCI-III system in children.
  • To assess the accuracy of propofol concentration measurements against target concentrations.

Main Methods:

  • Thirty pediatric patients (ASA I-II) were studied.
  • Propofol target plasma concentrations were entered into the SLOG/TCI-III system.
  • Measured propofol concentrations were analyzed using high-performance liquid chromatography with fluorescence detection.
  • Performance error (PE), median performance error (MDPE), median absolute performance error (MDAPE), and Wobble were calculated.

Main Results:

  • A strong linear correlation was observed between measured and target propofol concentrations (r = 0.8667).
  • The pediatric system achieved an MDPE of 10% and an MDAPE of 22%.
  • The median Wobble was 24%.

Conclusions:

  • The SLOG/TCI-III system demonstrates performance within accepted clinical practice limits for pediatric anesthesia.
  • The system's accuracy supports its use in pediatric target-controlled propofol infusion.
Abstract

Related Concept Videos

Drug Dosing: Infants and Children01:29

Drug Dosing: Infants and Children

Pediatric patient dosages diverge from adults due to disparities in body surface area, total body water, and extracellular fluid per kilogram of body weight. The dosing regimen considers the variations in pharmacokinetics and pharmacology across distinct age groups, encompassing preterm newborns, infants, young children, older children, and adolescents. Calculation of pediatric patient doses is predicated on determining body surface area, which exhibits a superior correlation with the child's...
Parenteral Anesthetics: Overview01:24

Parenteral Anesthetics: Overview

Intravenous anesthetics are drugs administered parenterally to induce anesthesia or sedation. Propofol is a widely used agent formulated as a 1% emulsion in soybean oil, glycerol, and egg phosphatide. It induces rapid anesthesia primarily due to its rapid distribution from the bloodstream to target tissues and is metabolized in the liver. However, it can cause significant pain on injection and hypertriglyceridemia. Fospropofol, a water-based prodrug of propofol, lacks these adverse effects.
IV Infusion to Oral Dosing: Conversion Methods01:28

IV Infusion to Oral Dosing: Conversion Methods

The development of extended-release formulations has facilitated the transition from intravenous to oral medication, offering a more convenient and patient-friendly approach to drug administration. This transition, however, requires careful management to ensure that therapeutic drug levels are maintained, preserving efficacy and avoiding adverse effects. Understanding pharmacokinetic principles and dosage calculations is critical during this process.Pharmacokinetics of the...
One-Compartment Model: IV Infusion01:09

One-Compartment Model: IV Infusion

Intravenous (IV) infusion is often utilized when continuous and controlled drug delivery is necessary, such as during surgery or in the treatment of chronic diseases. This method offers numerous advantages, including immediate drug action, precise control over dosage, and bypassing the first-pass metabolism.
The one-compartment model for IV infusion uses mathematical equations to describe the rate of change in drug quantity in the body. At steady-state or infusion equilibrium, the drug input...
Drug Accumulation During Multiple Dosing: Intermittent IV Infusions01:24

Drug Accumulation During Multiple Dosing: Intermittent IV Infusions

Intermittent intravenous (IV) infusion is a method of drug administration where medications are delivered over short infusion periods followed by intervals of no drug delivery. This approach helps to prevent sustained high drug concentrations in the bloodstream, reducing the risk of adverse effects associated with prolonged exposure. Unlike continuous infusion, steady-state concentrations may not be achieved during a single dosing cycle but can be reached through repeated...