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To make regional anesthesia work in an environment where increasing pressure is exerted to do more procedures in less time, providers strive to find new ways to increase the speed of anesthetic delivery. After the completion of an epidural, nerve, or plexus block, it seems that one has little control over the time required for the development of anesthesia. To influence this latency period, investigators study adjuvants with the hope of discovering one that will hasten this process. This article reviews the additives and manipulations that have been tried to facilitate the onset of peripheral nerve block, epidural anesthesia, intravenous regional anesthesia, and peribulbar block. |
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