No enhancement of sensory and motor blockade by ketamine added to ropivacaine interscalene brachial plexus blockade

Abstract

This study suggests that 30 mg ketamine added to ropivacaine in the brachial plexus block does not improve the onset or duration of sensory block, but it does cause a relatively high incidence of adverse-effects. These two findings do not encourage the use of ketamine with local anesthetics for brachial plexus blockade.