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New delivery systems for local anaesthetics-part 2
1Department of Anaesthesia, University of Otago, Christchurch 8042, New Zealand.
Anesthesiology Research and Practice
|December 23, 2011
Summary
This study explores advanced drug delivery techniques for local anesthetics, including topical and injectable methods. Novel approaches like iontophoresis enhance anesthetic permeation and prolong blockade effects for clinical use.
Area of Science:
- Anesthesiology
- Pharmacology
- Drug Delivery Systems
Background:
- Topical and injectable local anesthetics are crucial in pain management.
- Optimizing drug delivery is essential for effective and prolonged anesthesia.
- Current methods have limitations in enhancing permeation and duration of action.
Purpose of the Study:
- To review and explore various drug delivery techniques for local anesthetics.
- To investigate methods for enhancing transdermal anesthetic permeation.
- To discuss the clinical applications and potential of advanced local anesthetic delivery systems.
Main Methods:
- Exploration of diverse administration routes: epidural, peripheral, wound catheters, intra-nasal, intra-vesical, intra-articular, intra-osseous.
- Evaluation of non-invasive techniques to enhance transdermal permeation: iontophoresis, electroporation, sonophoresis, magnetophoresis.
- Discussion of controlled heat and eutectic mixtures for improved anesthetic delivery.
Main Results:
- Several methods, including iontophoresis, can significantly enhance local anesthetic permeation.
- Potential exists to prolong local anesthetic blockade, focusing on the sensory component.
- Encapsulated anesthetic agents require further research for optimal release and safety.
Conclusions:
- Advanced drug delivery systems offer clinicians expanded choices for prolonging local anesthetic action.
- Iontophoresis represents a promising technique for active drug transport into the skin.
- Further research is needed to optimize novel delivery systems for clinical efficacy and safety.
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