Conclusion Autonomic nervous function is damaged in acute viral myocarditis patients,and the low tension of vagus nerve is thought to be the major manifestation,especially in patiens with arrhythmia. The decline of HRV is positively correlated with the extent of the disease.
Methods: Eighteen adult male rats were randomly divided into drug group, which received intraperitoneal injection of tegaserod and vehicle control group. The electrocardiosignal was recorded in the conscious status. By HRV analysis, the changes of sympathetic tone [P1/(P1+P2)] and vagal tone [P2/(P1+P2)] before and after colorectal distension were compared in the two groups.
BACKGROUND Some researches show that aerobic kinesitherapy can strengthen the vagal tone that determines heart rate stability increase the heart rate variability and reduce the occurrence of cardiovascular events.
\ Conclusion The activity of autonomic nervous system in CHD patients is damaged , the tone of pneumogastric nerve weakened and of sympat hetic nerve relatively excited, thus the risk of malignant arrhythmia in creases.