Sapoznikov D, Tzivoni D, Weinman J, Penchas S, Gotsman M S
J Electrocardiol. 1977 Apr;10(2):137-48. doi: 10.1016/s0022-0736(77)80047-2.
High fidelity (HF) electrocardiography (ECGY) was performed on four groups of patients with a normal resting electrocardiogram (ECG). Two groups (A and B) consisted of normal subjects over or under the age of 40, while the other two groups of patients (C and D) underwent coronary arteriography because of chest pain. HR ECG components within the initial portion of the QRS complex were significantly more common among patients with advanced coronary disease. The difference between the normal groups and the group with documented coronary artery disease (CAD) became more significant when the number of leads showing the HF ECG components was counted. Precordial leads were more sensitive in predicting the presence or absence of CAD than limb leads. HF ECG components in the terminal portion of the QRS complex did not differentiate between normals and patients with coronary artery disease, unless the number of leads showing these HF ECG components was considered. It seems that abnormal HF ECG components can point to minor areas of fibrosis caused by coronary artery disease even if the resting conventional ECG is normal.
对四组静息心电图（ECG）正常的患者进行了高保真（HF）心电图（ECGY）检查。两组（A组和B组）由40岁以上或以下的正常受试者组成，而另外两组患者（C组和D组）因胸痛接受了冠状动脉造影。在晚期冠心病患者中，QRS波群起始部分的高频心电图成分明显更为常见。当计算显示高频心电图成分的导联数量时，正常组与有记录的冠状动脉疾病（CAD）组之间的差异变得更加显著。胸前导联在预测CAD的有无方面比肢体导联更敏感。除非考虑显示这些高频心电图成分的导联数量，否则QRS波群终末部分的高频心电图成分无法区分正常人和冠状动脉疾病患者。即使静息常规心电图正常，异常的高频心电图成分似乎也能指向由冠状动脉疾病引起的微小纤维化区域。
