Objective To investigate the best postures of patients with cystolithiasis for extracorporeal shock wave lithotripsy(ESWL) treatment.

目的探冲击波碎石术(ESWL)治疗膀胱结石的较佳位。

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.

结论心脏手术、循环、低温、主动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缓慢的过程。