Kanai A, Koiso S, Hoka S. Comparison of analgesia induced by continuous epidural infusion of plain 1% lidocaine and 1% lidocaine prepared by dilution of 2% lidocaine with the same volume of saline. Journal of Clinical Anesthesia. 2007 Nov;19(7):534–8. doi: 10.1016/j.jclinane.2007.06.011.
Comparison of analgesia induced by continuous epidural infusion of plain 1% lidocaine and 1% lidocaine prepared by dilution of 2% lidocaine with the same volume of saline