动态心电图是一种随身携带的记录仪,对临床诊断缺血性心脏病、心律失常的定位诊断与鉴别诊断、治疗及预后判断提供了可靠的依据。窦性心律震荡(HRT)技术是动态心电图近年来发展最快、最引人注目的进展之一。微伏级T波电交替(T-wave alternans,TWA)是预测发生恶性室性心律失常与心脏性猝死的独立的、具有统计学意义的、国际公认的重要预测指标。动态心电图现已成为心血管疾病诊断领域中实用、无创、安全、准确、重复性强的重要检测技术。 Holter is a portable recorder, clinical diagnosis of ischemic heart disease, arrhythmia positioning diagnosis and differential diagnosis, treatment and prognosis to provide a reliable basis. Sinus Arrhythmia (HRT) technique is one of the fastest growing and most dramatic developments of Holter in recent years. Micro-volt T-wave alternans (TWA) are independent, statistically significant and internationally accepted predictors of malignant ventricular arrhythmias and sudden cardiac death. Holter now has become an important diagnostic technique in the field of cardiovascular disease diagnosis, noninvasive, safe, accurate and repeatable.