CAJ | 학술논문

QT离散度(QT dispersion，QTd)指体表l2导联心电图各导联间QT间期存在的差异，至今QTd已作为衡量心肌复极不均一性和电不稳定性的一个重要指标，临床应用上日趋广泛，可对心肌缺血、心肌病变、心室肥厚、再灌注治疗的疗效等进行评价,其具有重要的临床研究价值。现就有关研究涉及的方法学、电生理基础及在诸多疾病中的临床应用进展作一综述。
QT리산도(QT dispersion，QTd)지체표l2도련심전도각도련간QT간기존재적차이，지금QTd이작위형량심기복겁불균일성화전불은정성적일개중요지표，림상응용상일추엄범，가대심기결혈、심기병변、심실비후、재관주치료적료효등진행평개,기구유중요적림상연구개치。현취유관연구섭급적방법학、전생리기출급재제다질병중적림상응용진전작일종술。
QT dispersion (QTd) refers to the interlead variations of QT interval duration in the surface of l2-lead ECG. QTd has been an important indicator as a measure of reflecting regional dif erences in repolarization heterogeneity and electrical instability, and its clinical utilities are becoming more and more widely in the aspect of myocardial ischemia, cardiomyopathy, ventricular hypertrophy, the therapeutic ef ect of reperfusion therapy and so on, and it has an important clinical value. The fol owing is the summarize regarding the research of methodology, the electrophysiological basis and the clinical utility in many diseases.