Recent research indicated that standards of the electrocardiogram (ECG) findings among healthy subject differ by gender, age and race. Researches concerning normal ECG limit for the Chinese are few and have their limitations.

• 近年研究发现,心电图的时间振幅参数受到性别年龄和种族的影响,我国尚无比较有代表性的心电图正常值标准。