PT  - JOURNAL ARTICLE
AU  - Lund, Claus
AU  - Mogensen, Torben
AU  - Hansen, Ole Bo
AU  - Qvitzau, Susanne
AU  - Kehlet, Henrik
TI  - Effects of Etidocaine Administered Epidurally on Changes in Somatosensory Evoked Potentials after Dermatomal Stimulation
AID  - 10.1136/rapm-00115550-199116010-00009
DP  - 1991 Jan 01
TA  - Regional Anesthesia: The Journal of Neural Blockade in Obstetrics, Surgery, & Pain Control
PG  - 38--42
VI  - 16
IP  - 1
4099  - http://rapm.bmj.com/content/16/1/38.short
4100  - http://rapm.bmj.com/content/16/1/38.full
SO  - Reg Anesth Pain Med1991 Jan 01; 16
AB  - The effect of lumbar epidural anesthesia with similar volumes (approximately 20 ml) of 1% and 1.5% etidocaine on early (<0.5 seconds) somatosensory evoked potentials (SEPs) to electrical stimulation of the S1, L1 and T10 dermatomes was examined in two groups of ten patients in a randomized, double-blind study. Level of analgesia to pinprick was T7.7 ± 0.9 in the 1% group and T6.6 ± 0.6 in the 1.5% group and all patients had total motor block. Despite similar analgesia to pinprick, SEP amplitude was more reduced in the 1.5% group, in which SEPs were abolished in all patients at the L1 level.