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. Author manuscript; available in PMC: 2018 Jan 1.
Published in final edited form as: Heart Rhythm. 2016 Sep 23;14(1):25–33. doi: 10.1016/j.hrthm.2016.09.019

Figure 6.

Figure 6

Effects of lidocaine (10 ml, 2 %) stellate ganglion block on SKNA continuously recorded from the right arm. A shows patient 1. Needle insertion (black arrows) was followed by activation of SKNA. Lidocaine injection (red arrows) into the LSG transiently reduced SKNA. However, RSG injection was followed by a significant reduction of SKNA. Panels B and C show responses to lidocaine injection in the remaining 2 patients. The gaps in tachogram (small black upward arrows) occurred because artifacts prevented automated selections of the R waves.