Combining Lidocaine to Various Concentrations of Ropivacaine for Interscalene Block

Combining Lidocaine to Various Concentrations of Ropivacaine for Interscalene Block

It is potentially interesting to combine the rapid onset of lidocaine with the longer acting ropivacaine in interscalene block but the effects of different concentrations of ropivacaine in this combination are not known. The purpose of this study was to compare the effects of different concentration of ropivacaine in combination with lidocaine on motor and sensory blocks in interscalene block.