Hombach V, Kebbel U, Höpp H W, Winter U, Hirche H
Int J Cardiol. 1984 Aug;6(2):167-88. doi: 10.1016/0167-5273(84)90351-6.
We have developed a new high resolution ECG equipment for recording cardiac microvolt potentials from the body surface. Noise reduction has been achieved by specially designed suction electrodes, by spatial averaging of the electrocardiograms from four electrode pairs, using extremely low noise amplifiers, by performing registrations within a Faraday cage, and by teaching the patient to relax during end expiratory breath holding. Fourteen young males (controls) and 30 patients with various cardiac diseases (27 with CHD) were studied. In normals ventricular late potentials were not seen, but in 12/30 patients clearcut diastolic potentials were found. In 7/12 patients with positive findings, late potentials appeared beat-by-beat, in 5/12 patients those signals occurred intermittently, in 11/30 patients questionably, and in the remaining 5/30 patients no late potentials were recorded. One patient with the Romano-Ward syndrome revealed phases with stable beat-by-beat and intermittently occurring ventricular late potentials. These results demonstrate the feasibility of continuous non-invasive recording of ventricular late potentials, whose clinical and prognostic significance remains to be established.
我们已经研发出一种新型高分辨率心电图设备，用于记录体表心脏微伏电位。通过特殊设计的吸杯电极、对四对电极记录的心电图进行空间平均、使用极低噪声放大器、在法拉第笼内进行记录以及指导患者在呼气末屏气时放松等方法实现了降噪。研究了14名年轻男性（对照组）和30名患有各种心脏疾病的患者（27名冠心病患者）。正常情况下未观察到心室晚电位，但在30名患者中有12名发现了明确的舒张期电位。在12名有阳性结果的患者中，7名患者的晚电位逐搏出现，5名患者的这些信号间歇性出现，30名患者中有11名结果可疑，其余5/30患者未记录到晚电位。一名患有 Romano-Ward 综合征的患者出现了逐搏稳定和间歇性出现心室晚电位的阶段。这些结果证明了连续无创记录心室晚电位的可行性，其临床和预后意义仍有待确定。
