Objective To study the difference of HRV between cardioneurosis and viral myocarditis.

目的探讨病毒性心肌炎与心脏神经症心率变异性(HRV)变化的临床意义。

Conclusion The hypothermia,extracorporeal circulation,clamp of aorta and drugs,etc.can lead to decrease of HRV in cardiac surgery.The resume of autonomic cardioneural system was a slow process.

论心脏手术、体外循环、低温、主动脉阻断及药物因素可导致心率变异性下降，而术后心脏自主神经系统的恢复是一个缓慢的过程。