期刊
CURRENT OPINION IN ANESTHESIOLOGY
卷 18, 期 3, 页码 289-292出版社
LIPPINCOTT WILLIAMS & WILKINS
DOI: 10.1097/01.aco.0000169237.29303.00
关键词
local anesthetics; levobupivacaine; ropivacaine
Purpose of review To evaluate the relevance of new local anesthetics in pediatric regional anesthesia. Recent findings Several studies evaluate the pharmacokinetics of new local anesthetics, like ropivacaine and levobupivacaine, and compare their safety and efficacy with the old but widely used bupivacaine. Summary The goal of anesthetists using regional anesthesia is to use local anesthestics that are as safe and effective as possible, with a rapid onset and a long duration. Even though adequate dose guidelines are available, several toxic effects are reported with the use of bupivacaine in children due to inadvertent intravenous injection, long-term infusion (> 48 h) or administration in newborn babies and infants with reduced metabolism. Ropivacaine and levobupivacaine are new local anesthetics with a wider safety margin that have similar characteristics: both of them are pure S-(-)-enantiomers whose main pharmacological features are less cardio-and neuro-affinity and -toxicity in comparison with the racemic formulae and R-isomers, and a differential neural blockade with less motor than sensory block. Several clinical studies in children compare ropivacaine and levobupivacaine with bupivacaine.
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