自主神经对心室晚电位各参数的昼夜影响

采用数字化Holter监测仪对 30例健康人进行连续监测 ,计算其心室晚电位 (VLP)及心率变异性 (HRV)指标的动态变化 ,以评价出两者之间的关系。所有健康受试者 ,均按立体正交导联方式佩戴 2 4h动态心电图 ,分别记录午夜 2时及下午 14时左右这两个时间点的VLP及HRV数值 :夜间LF 4 93.5 7± 15 6 .6 2ms2 ,HF 6 89.73± 172 .19ms2 ,LF/HF 0 .74 3± 0 .118,T QRS 10 0 .1± 12 .79ms ;白天LF 4 14 .75± 176 .6 1ms2 ,HF 318.5 1± 116 .6 1ms2 ,LF/HF 1.399± 0 .2 81,T QRS 90 .0 3± 9.70ms(P <0 .0 5 ) ,结果显示VLP与HRV均存在昼夜的明显变化 ,T QRS与HF在夜间均增高 ,白天均降低 ,且表现出明显的正相关 ;TQRS与LF/HF比值则表现出明显的负相关。结论 :VLP存在与自主神经相关的昼夜规律性变化。

The Influcence of Autonomic Nerve on Long-Term Ventricular Late Potential.

The aim of this study was to compare ventricular late potential(VLP) and heart rate variability(HRV)by using digital Holter recorder supervising 30 health person and to evaluate the relationship between these two methods.Each person wore 24 hour three bipolar orthogonal digital Holter recorder.We chose the value of VLP and HRV at 02∶00 and 14∶00,Night:LF 493.57±156.62 ms 2,HF 689.73±172.19 ms 2,LF/HF 0.743±0.118,T QRS 100.1±12.79 ms;Day:LF 414.75±176.61 ms 2,HF 318.51±116.61 ms 2,LF/HF 1.399±0.281,T QRS 90.03±9.70 ms( P <0.05).Result:VLP and HRV both had significant difference between day and night,T-QRS and HF increased at night and decreased during the day,T QRS was positively with HF and negatively with LF/HF ratio.Conclusion:A significant day and night rhythm in T QRS was closely related to the rhythm of HRV.