摘要
目的:评价美西律治疗频发室性早搏( 简称室早) 的疗效及其对心率变异(HRV) 的影响。方法:24 h 动态心电图记录室早> 5 次/min 的病人31例,男性14 例,女性17 例,年龄(42 ±s 16) a,用美西律0 .1 ~0 .2 g , po,tid, 疗程2 wk 以上。治疗后复查动态心电图,观察室早和HRV 的变化。结果:治疗前后24 h 室早的自然对数分别为(8 .9 ±0 .9)次和(6 ±3) 次,下降(2 .5 ±2 .9) 次( P< 0 .01) , 成对室早对数由(2 .1 ±2 .3) 次下降至(1 .0 ±1 .9) 次( P< 0 .01) ,24 h 室性心动过速的对数由( 0 .9 ±1 .6) 次降至(0 .4 ±1 .1) 次( P< 0 .01) 。但5 个HRV 时域指标在治疗前后无明显变化。结论:美西律对室性早搏有显著的抑制作用,未发现其对心率变异时域指标有明显影响。
AIM: To analyze the effect of mexiletine on ventricular premature complexes (VPC) and heart rate variability (HRV). METHODS: Thirty_one patients (M 14, F 17; age 42 a±s 16 a) with mean VPC>5/min on 24 h ambulatory ECG recording were treated with mexiletine 0.1_0.2 g, po, tid for 2 wk or more, and a repeat 24 h ambulatory ECG was made to evaluate the therapeutic effect. RESULTS: VPC decreased [ln(VPC) from 8.9±0.9 to 6 ± 3 ( P < 0.01 ) , ln ( VPC pair ± 1 ) from 2.1 ± 2.3 to 1.0±1.9 (P<0.01), ln (VPC run+1) from 0.9±1.6 to 0.4±1.1(P<0.01)], while 5 time_domain indices of HRV (SDNN, SDANN, SDIDX, rMSSD, pNN50) were not significantly affected. CONCLUSION: Mexiletine can markedly inhibit ventricular premature complexes and has no significant effect on HRV during short_term therapy.
出处
《中国新药与临床杂志》
CAS
CSCD
北大核心
1999年第6期361-363,共3页
Chinese Journal of New Drugs and Clinical Remedies