| 摘要 |
<p>A single electrical catheter for temporary or permanent cardiac stimulation, whether VDD or DDD, includes atrial and ventricular electrodes mounted on the same catheter. The distance between the two electrode groups depends on heart dimensions. The electrodes A, B, C used for atrial sensing and stimulations are located and connected in such a way, that A and C are positioned symmetrically about the central electrode B; A and C are electrically connected to each other and to a terminal of the atrial pacing device, while B is connected to the other terminal. Said electrode configuration allows to decrease the stimulation threshold and to increase the recording sensitivity of the atrial signals.</p> |
