西宁地区老年人无症状性心肌缺血与HOLTER监测的临床研究

CLINICAL STUOY OF SMI WITH HOLTER IN AGED PATIENT IN XINING

本文迈过对西宁地区（海拔２２６０ｍ）４７２例老年患者的ＨＯＬＴＥＲ监测，探讨ＳＭＩ的发生与年龄、时间、心率等的关系及其规律，结果表明：该地区老年患者ＳＭＩ及缺血性ＳＴ段总的发生率均高于平原地区，ＳＭＩ多发生于上午及午休后的２～４小时内，静息状态时，ＳＭＩ与有症状性心肌缺血的发生率有显著性差异（Ｐ＜０．０１），缺血性ＳＴ段发生与年龄分布有一定关系，同时还发现，ＳＭＩ患者心肌梗塞的发病率高于有症状性心肌缺血患者的发病率。

n order to study the incidence of silent mvocardial ischemia (SMI)in Xining(2 260m ahovesea levai),HOLTER was used to investigate 472 aged patients. It was found that the incidence ofSMI was related to patlents’ age,disease duration and heart rate. The incidence of SMI in Xiningwas higher than in plant and SMl was more promonent in the morning and 2～4Pm. AS comparedto symptomatic myocardial ischemias,during resting,the incidence of ST-T changes of ECG inSMI was significantly higher than symptomatic myocardial ischemlas(P< 0. 01).Also the in-cidence of acute myocardial infarction among the SMI patients was higher than the symptomaticmvocadial ischemias.