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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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Design of a Biocompatible Drug-Eluting Tracheal Stent in Mice with Laryngotracheal Stenosis
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Current concepts regarding drug dosing for peripheral stents.

Marco Ferrone1,2, Yanping Cheng1, Juan F Granada3

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Drug-eluting stents (DES) show promise for peripheral artery disease, but unique challenges exist. Further research is needed to determine optimal DES strategies for diverse peripheral vascular applications.

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Area of Science:

  • Vascular Medicine
  • Interventional Cardiology
  • Biomaterials Science

Background:

  • Drug-eluting stents (DES) are standard for coronary artery disease, with advanced generations offering high safety and efficacy.
  • Peripheral arteries present unique biomechanical and biological challenges distinct from coronary arteries.
  • Peripheral atherosclerosis involves greater plaque burden, calcification, and more aggressive disease patterns like longer lesions and chronic occlusions.

Purpose of the Study:

  • To evaluate the efficacy and safety of various peripheral vascular technologies, including drug-eluting stents (DES).
  • To address the challenges in adapting coronary DES technology to the complex peripheral vasculature.
  • To compare outcomes of different treatment strategies in peripheral arterial disease (PAD).

Main Methods:

  • Review of clinical trial data for various peripheral vascular interventions.
  • Analysis of stent design and drug-elution strategies tailored for peripheral arteries.
  • Comparison of outcomes across different treatment modalities (bare metal stents, drug-coated balloons, DES) in specific vascular beds (e.g., superficial femoral artery, below-the-knee).

Main Results:

  • Outcomes for peripheral interventions vary significantly based on the application site and technology used.
  • Drug-eluting stent (DES) and drug-coated balloon technologies show encouraging results in peripheral arteries.
  • Restenosis in peripheral arteries is more aggressive, occurring later (~12 months), necessitating distinct pharmacokinetic profiles.

Conclusions:

  • Current drug-eluting stent (DES) technology faces challenges in peripheral applications due to unique vascular characteristics.
  • Encouraging clinical trial results suggest potential for advanced DES in treating peripheral arterial disease (PAD).
  • Further comparative studies are essential to establish the optimal therapy for diverse peripheral vascular conditions.