[Ultrasound guided T2 intercostal nerve block: a comparison with stellate ganglion block under the blind technique and ultrasound guided technique].

Background: The aim of this study is to compare the efficacy of stellate ganglion block, performed by ultrasound guided technique and blind technique, and ultrasound guided T2 intercostal nerve block.

Methods: In the present study, we evaluated the changes in upper arm skin temperature, and the development of Horner syndrome after stellate ganglion block (blind technique and ultrasound guided technique) and ultrasound guided T2 intercostal nerve block in 12, 11 and 10 patients scheduled for each block. Stellate ganglion blocks (blind technique) were performed via an anterior paratracheal approach at C6 using 1% mepivacaine 5 ml.