CAJ | 학술논문

心电图是目前临床应用广泛且实用的冠心病诊断及预后评估工具，而心肌复极异常的心电图表现尤其重要。复极异常主要体现在心电图 ST 段、T 波和 QT 间期的改变上。本文对 ST 段、T 波、QT 间期分别进行了详细论述，总结了各项指标对冠心病的诊断及预后评估的价值，并对其局限性进行分析，为其更好地投入临床应用提供依据。U 波对缺血性心脏病诊断的特异性较高，但临床研究相对较少。此外，T 波电交替和 T 波峰末间期（Tp-Te）也是心肌复极的指标，但因目前临床应用较少，且主要与恶性心律失常相关，未作具体阐述。
심전도시목전림상응용엄범차실용적관심병진단급예후평고공구，이심기복겁이상적심전도표현우기중요。복겁이상주요체현재심전도 ST 단、T 파화 QT 간기적개변상。본문대 ST 단、T 파、QT 간기분별진행료상세논술，총결료각항지표대관심병적진단급예후평고적개치，병대기국한성진행분석，위기경호지투입림상응용제공의거。U 파대결혈성심장병진단적특이성교고，단림상연구상대교소。차외，T 파전교체화 T 파봉말간기（Tp-Te）야시심기복겁적지표，단인목전림상응용교소，차주요여악성심률실상상관，미작구체천술。
As a practical tool,electrocardiogram(ECG)is widely applied in the diagnosis and prognosis evaluation of coronary heart disease,especially ECG with abnormal myocardial repolariza-tion.The repolarization abnormalities mainly manifest in the changes of ST segments,T waves,and QT durations.This paper discusses ST segment,T wave,and QT duration in details,and summari-zes those indices’clinical values for the diagnosis and prognosis evaluation of coronary heart disease, with the boundedness also analysed.It points in the right direction for the clinical application of those indices.U wave has higher specificity in the diagnosis of ischemic heart disease,however it has been focused by relatively few clinical studies.In addition,T-wave electrical alternans and T peak-end interval(Tp-Te)are also indicators for myocardial repolarization.However,the two indi-ces were not referred in details in this paper since their application is rarely seen clinically and they mainly associate with malignant arrhythmia.