This experiment was performed on 30 rabbits. The heart rate was paced artificial-ly at a constant speed. AMI of the left ventricle was produced by ligature of LVB for 30 min andMAPs recorded from the bonder zone of ischemia with the bipolar epicardial contact electrodes. Thechief findings showed that MAPD50, MAPD90 abbreviated obviously and MRR accelerated apparentlyafter AMI while EA could inhibit the abbreviation of MAPD50 and MAPD90, and delay the accelera-tion of MRR. It suggested that EA might be beneficial to anti-arrhythmia and prevented from sud-denly cardial death. Therefore the result has provided not only a new experimental evidence for an im-portant contribution to coronary heart disease treated with acupuncture but also a new content for therelationship between Neiguan （PC 6） of Pericardium Meridian and the heart.
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