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负荷心电图已成为临床上估价和处理心血管病人的一种不可缺少的手段。对于易患冠心病的正常人,也常用作为一种过筛试验。Goldhammer及Scherf在1932年首次提出心电图运动试验,以帮助冠心病的诊断。其后,Master为了同一目的,发展并修订了二级梯试验。然而,一些学者指出二级梯试验缺乏足够的敏感性,于是大多采用分级运动试验。其他负荷心电图例如缺氧试验、等张运动、心房调搏,由于难以实施和难以标准化,且又缺乏敏感性及特异性,因而未被广泛
Load electrocardiogram has become an indispensable means for clinical evaluation and treatment of cardiovascular patients. For susceptible normal subjects, is also commonly used as a screening test. Goldhammer and Scherf first proposed electrocardiogram exercise tests in 1932 to help diagnose coronary heart disease. Thereafter, Master developed and revised a second-level ladder test for the same purpose. However, some scholars pointed out that the second ladder test lack of sufficient sensitivity, so most of the classification exercise test. Other stress ECGs such as hypoxia tests, isotonic exercise, atrial pacing, are not widely used due to their difficulty in being standardized and their lack of sensitivity and specificity