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Effects of cardiac plexus blockade on stellate T wave sympathetic response. (A) T wave amplitude sympathetic changes induced by RSGS and LSGS were significantly inhibited by lidocaine, bilaterally. (B) T wave pattern modifications induced by RSGS (T wave inversion) and LSGS (T wave elevation) were eliminated by lidocaine cardiac plexus block (lead aVF). LSGS= left stellate ganglion stimulation. RSGS= right stellate ganglion stimulation.
