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Review
. 2023 Feb 15;12(4):1541.
doi: 10.3390/jcm12041541.

Peripheral Regional Anesthesia Using Local Anesthetics: Old Wine in New Bottles?

Lukas Gasteiger  1 , Lukas Kirchmair  2 , Elisabeth Hoerner  1 , Ottokar Stundner  1 , Markus W Hollmann  3
Affiliations
Review

Peripheral Regional Anesthesia Using Local Anesthetics: Old Wine in New Bottles?

Lukas Gasteiger et al. J Clin Med. .

Abstract

During the past decade, numerous efforts were undertaken aiming at prolonging the analgesic effect of regional anesthesia. With the development of extended-release formulations and enhanced selectivity for nociceptive sensory neurons, a very promising contribution to the development of pain medications has been achieved. At present, liposomal bupivacaine is the most popular, non-opioid, controlled drug delivery system, but its duration of action, which is still controversially discussed, and its expensiveness have decreased initial enthusiasm. Continuous techniques can be seen as an elegant alternative for providing a prolonged duration of analgesia, but for logistic or anatomical reasons, they are not always the best choice. Therefore, focus has been directed towards the perineural and/or intravenous addition of old and established substances. As for perineural application, most of these so-called 'adjuvants' are used outside their indication, and their pharmacological efficacy is often not or only poorly understood. This review aims to summarize the recent developments for prolonging the duration of regional anesthesia. It will also discuss the potential harmful interactions and side effects of frequently used analgesic mixtures.

Keywords: adjuvants; local anesthetics; prolongation of action; regional anesthesia.

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Conflict of interest statement

The authors declare no conflict of interest.

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