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Related Concept Videos

Drug Distribution: Volume of Distribution01:25

Drug Distribution: Volume of Distribution

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The volume of distribution refers to the theoretical volume necessary to contain the entire amount of an administered drug at the same concentration observed in the blood plasma. The body's intracellular fluid compartment, which makes up two-thirds of the total body water, is contrasted with the extracellular fluid compartment—comprising plasma and interstitial fluid—that accounts for one-third. The volume of distribution can vary depending on the characteristics of the drug.
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Elderly individuals encompass a diverse population with varying degrees of age-related physiological changes. Defining the elderly presents challenges, as the geriatric population is often arbitrarily categorized as individuals older than 65. However, many individuals in this group lead active and healthy lives, with an increasing number surpassing 85 years and falling into the older elderly category. Physiological changes associated with aging impact performance capacity and homeostatic...
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Constructing a roadway embankment over uneven terrain requires precise leveling to ensure stability and proper drainage. Surveyors use a leveling instrument and staff to calculate ground elevations and determine the required fill material at each point along the embankment alignment.The process begins by positioning a leveling instrument near a benchmark with a known elevation. A backsight reading establishes the instrument height, which serves as a reference for subsequent measurements. A...
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In the United States, obesity is a prominent concern. It is linked to heightened mortality rates due to increased occurrences of conditions such as hypertension, atherosclerosis, coronary artery disease, and diabetes compared to nonobese individuals. A patient is classified as obese if their actual body weight surpasses the ideal or desirable body weight by 20%, based on Metropolitan Life Insurance Company data. Ideal body weights consider average weights and heights for males and females...
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Drug distribution within the body is a dynamic process involving the movement of a drug in two directions across various compartments: from the bloodstream into tissues (tissue uptake) and from tissues back into the bloodstream (tissue release or redistribution). This process is passive and primarily driven by two variables: the concentration gradient between the bloodstream and the extravascular tissues and the drug's ability to cross the cell membrane.
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Related Experiment Video

Updated: Feb 13, 2026

Characterization of Nanocrystal Size Distribution using Raman Spectroscopy with a Multi-particle Phonon Confinement Model
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Design of shared unit-dose drug distribution network using multi-level particle swarm optimization.

Linjie Chen1, Thibaud Monteiro2, Tao Wang3,4

  • 1LASPI (EA3059, IFRESIS143), University of Saint-Etienne, University of Lyon, 20 Avenue de Paris, 42334, Roanne cedex, France.

Health Care Management Science
|March 3, 2018
PubMed
Summary

A new multi-level particle swarm optimization (MLPSO) method optimizes shared unit-dose drug distribution networks for small hospitals, improving efficiency and reducing costs. This approach enhances medication security and logistic organization in shared healthcare systems.

Keywords:
Capacitated location routing problemFacility locationLogistic managementMeta-heuristicMulti-level optimizationParticle swarm optimizationPatient safetyProcess improvement

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Area of Science:

  • Operations Research
  • Healthcare Logistics
  • Optimization Algorithms

Background:

  • Unit-dose drug distribution systems are crucial for medication security and efficiency in large hospitals.
  • Small hospitals face challenges in adopting these systems due to economic constraints, necessitating shared networks.
  • The logistic organization of shared drug distribution is a critical and sensitive issue for smaller healthcare facilities.

Purpose of the Study:

  • To develop a generalized multi-level optimization method for designing shared unit-dose drug distribution networks.
  • To address the specific constraints of production planning within a capacitated location-routing problem (CLRP) framework.
  • To minimize logistic operating costs for shared drug distribution systems in small hospitals.

Main Methods:

  • Development of a novel multi-level particle swarm optimization (MLPSO) algorithm.
  • Modeling the problem as a capacitated location-routing problem (CLRP) with production planning constraints.
  • Application of the MLPSO method to optimize the design of shared unit-dose drug distribution networks.

Main Results:

  • The proposed MLPSO algorithm provides a more suitable modeling framework for shared drug distribution networks.
  • Significant computational time savings were achieved compared to existing methods.
  • Demonstrated superior optimization performance in minimizing logistic operating costs for shared systems.

Conclusions:

  • The MLPSO method offers an effective solution for optimizing shared unit-dose drug distribution networks in small hospitals.
  • The developed framework enhances both efficiency and medication security in resource-constrained healthcare settings.
  • This research contributes to improved logistic strategies for shared automatic drug distribution systems.