200例健康成人QT间期离散度分析  

The Analysis of QT Interval Dispersion of 200 Healthy Adults

作　　者：周红丽[1] 刘仁光[1] 

机构地区：[1]锦州医学院附属第一医院心血管病研究所,辽宁锦州121001

出　　处：《锦州医学院学报》2002年第3期6-8,共3页Journal of Jinzhou Medical College

摘　　要：目的　探讨健康成人QT间期离散度 (QTd)及影响因素。方法　用 12导联同步与非同步方法描记2 0 0例健康成人心电图 ;测RR间期 ,QTmax、QTmin、QTd及QTmax、QTmin和QRS出现最早导联 ;对照分析记录方法、年龄、性别对QTd的影响。结果　 (1) 2 0 0例健康成人 12导联同步描记QTd为 (33 0 7± 10 87)ms (10～ 5 7ms) ;(2 ) 12导联同步与非同步描记检测对照QTd ,非同步描记QTmax增大 (P =0 0 2 5 ) ,QTd减小 (P =0 0 0 1) ;(3)年龄增加QTd有增大趋势 ,但无显著性差异 (P >0 0 5 ) ;(4 )女性QTmax大于男性P =0 0 4) ,但QTd小于男性 (P =0 0 0 5 )。结论　本组测得 2 0 0例健康成人QTd范围 10～ 5 7ms,提示QTd >6 0ms应视为延长 ;在QTd检测中应强调 12导联同步描记 。Objective To investigate QT interval dispersion and its affective factors in healthy adults. Methods Synchrony and non-syncrony 12 leads ECG data was taken from 200 healthy adults,RR interval,QTmax,QTmin and QTd were measured,the influences of different recording methods,different age and gender groups were compared and analyzed. Results (1) The normal value of QTd obtained from synchrony 12 leads ECG was (33.07±10.87)ms (ranged 10～57ms).(2)QTmax was greater (P=0.025),QTd was smaller (P=0.001) in synchrony 12 leads ECG than those of non-syncrony 12 leads ECG.(3) QTd prolonged with increasing age,but with no significant difference beteewn different age groups(P>0.05).(4) Females had a significantly greater QTmax (P=0.04),a significantly samller QTd than males (P=0.005).Conclusion The normal value of QTd was 10～57ms in our 200 healthy adults,if>60ms,it can be thought prolonged.when recording ECG to measure QTd,synchrony 12 leads ECG should be emphasize,when analgzing it,influnce of gender should be considered.

关 键 词：心电图 QT间期离散度 健康成人 

分 类 号：R540.41[医药卫生—心血管疾病]