12导联QRS总振幅诊断左心室肥大的探讨

Discussion on diagnosis of LVH with 12-lead QRS

为探讨12导联QRS总振幅(ZQRS)对左心室肥大的诊断价值,观察400例不同年龄,性别健康成人2QRS正常值。结果为男100—180mm(>50岁者),女80—170mm。2QRS不同性别和年龄正常值均有差异。以该值正常上限,筛选出61例确有或可疑左心室肥大而常规心电图电压不达标者,经与UCG对照分析。认为2QRS≥170mm结合ST-T改变及/或电轴左偏对部分确有左心室肥大而传统心电图电压难以达标者是极好的补充标准。

In order to discuss diagnostic value of 12-lead ΣQRS for LVH, authors observed normal range of 12-lead ΣQRS in 400 healthy subjects of different ages and sexes. Result 100-180mm(age>50 years) to be normal range in males and 80-170mm in females. Normal range varied with different ages and sexes. According to upper limit of normal range, we selected 65 cases with definite or suspicious LVH of whom voltage in routine ECG didn't come up to standard. After comparison with UCG and analysis, we have concluded that ΣQRS ≥170mm with ST-T change and/or left axis deviation might be an additionally valuable standard for those whoreally have LVH but can't be diagnosed by voltage in traditional ECG.