PMID: 9425971Jan 13, 1998Paper

Progress in the development of ultra-long-acting local anesthetics

Regional Anesthesia
P J KuzmaP S Staats

Abstract

Local anesthetic agents with a duration of action longer than the currently available local anesthetics could have widespread clinical application for the treatment of both chronic and acute pain. Over the last several decades, several different approaches have been used in the development of ultra-long-acting agents. There are currently promising preparations in development which may prove clinically useful in the near future. A Medline search was conducted for relevant articles published in peer-reviewed journals between 1971 and 1996. Investigations related to prolongation of the effect of local anesthetics either by alterations in the local anesthetic molecule, use of new or novel agents, or use of new delivery systems were reviewed. In addition, bibliographies of relevant articles were searched to capture any articles that were missed by the Medline search. Over the last several decades, numerous attempts have been made to prolong the duration of action of local anesthetics. Initially, research focused on alterations in the local anesthetic molecule or the identification of new agents with local anesthetic action. Recently, the focus of much of the work has shifted to new drug-delivery systems such as polymers and liposome...Continue Reading

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