Hendel J, Apstein C S, Jabbour S, Vokonas P S, Hood W B
Clin Cardiol. 1979 Oct;2(5):333-40. doi: 10.1002/clc.4960020504.
The apexcardiogram (ACG) and cardiokymogram (CKG) (displacement cardiogram) tracings were compared in 45 patients with a variety of cardiac diseases and in 16 normal subjects. The ACG and CKG were generally comparable in waveform and timing of standard tracing intervals; however, on a case by case comparison frequent discrepancies between the ACG and CKG were observed. In 13 patients where no ACG could be recorded, an interpretable CKG tracing was obtained. However, the CKG produced frequent artifacts, mirror images, was very sensitive to probe position, and was judged to be of limited advantage over the ACG.
对45例患有各种心脏疾病的患者和16名正常受试者的心尖心动图（ACG）和心动记波图（CKG）（位移心电图）描记图进行了比较。ACG和CKG在标准描记间期的波形和时间上通常具有可比性；然而，在逐例比较中，观察到ACG和CKG之间频繁出现差异。在13例无法记录到ACG的患者中，获得了可解释的CKG描记图。然而，CKG频繁产生伪影、镜像，对探头位置非常敏感，并且被认为与ACG相比优势有限。
