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本文取100份十二导联同步心电图(包括高血压患者27例、高血压左室肥厚患者35例、急性心肌梗塞患者12例、正常人26例),在同一祯心电图中,计算机自动测量QT离散度(QTD),并分别以T波与等电位线交点、T波降支切线与等电位线交点为QT间期终点,目测QTD值,比较计算机测量值与目测值间的差距。结果显示:计算机测量QTD值与两种目测QTD值间差异非常显著,两种目测QTD值间无显著性差异。认为计算机测量QTD具有省时、省力、较精确、分析全面的优点,但目测作为自身对照仍有一定价值。 十二导联心电图QT离散度(QTD)是一种无创、简单的方法,为预测心源性猝死的可能性提供了一条新的途径。虽然目前对此尚有争论,但有关QTD的各项研究已开展不少。国内研究均为非同步心电图采样和目测法,而国外研究已开始采用十二导联同步心电图采样和计算机软件自动分析QTD,纸速25～50mm/s。目测与自动测量QTD值间的差距究竟如何,本文作了比较。
In this paper, taking 100 12-lead synchronous ECG (including 27 cases of hypertensive patients, hypertensive patients with left ventricular hypertrophy in 35 cases, 12 cases of acute myocardial infarction, 26 cases of normal), in the same Zhen electrocardiogram, the computer automatically measure QT Dispersion (QTD). T-wave and equipotential lines were respectively intersected. The intersection of T-cut tangent and equipotential lines was the end of QT interval. Visual QTD was measured to compare the difference between computer measured value and visual value. The results show that there is a significant difference between the QTD values measured by computer and the two visual QTD values, and there is no significant difference between the two visual QTD values. Considering the advantages of time-saving, labor-saving, accurate and comprehensive analysis of QTD, computer vision still has some value as its own control. The 12-lead ECG QT dispersion (QTD) is a non-invasive, simple method that provides a new avenue for predicting the possibility of sudden cardiac death. Although there is still controversy so far, a great deal of research has been conducted on QTD. Domestic studies are non-synchronous ECG sampling and visual method, and foreign studies have begun using 12-lead synchronous ECG sampling and computer software to automatically analyze QTD, paper speed 25 ~ 50mm / s. Visual and automatic measurement of QTD how the gap between this article made a comparison.