食道与心房紧邻是利用食道电极记录心房电活动及经食道心房调搏的基础。已有一些学者将食道调搏器释放的电兴奋,刺激心房或心室而作为一种诊断和治疗的方法。但某些情况下不能保证持续稳定的有效起搏,而且电脉冲的高电流又可引起病人的局部不适,使这种技术的应用大大受限。作者用食道心房调搏方法对65例患者进行了电生理方面的研究,探讨了该技术中有关的重要问题。刺激脉冲宽度问题:传统的刺激心脏的脉冲宽度均在2毫秒之内,其根据是刺激电极与心肌组织紧密接触所描记的强度一时间曲线,在脉冲时间增大到2毫秒以上时,电流强度几乎处于完全无变化的稳定状态。本文试验重新描记了刺激电极置于食道,刺激心脏时的强度一时间曲线,发现脉宽逐渐增加到9.9毫秒的过程中,电流强度逐步降低,这种 Esophagus and atrium close to the use of esophageal electrodes to record atrial electrical activity and transesophageal atrial pacing based. Some scholars have been the esophageal pacemaker release of electrical excitement, stimulate the atrium or ventricle as a way of diagnosis and treatment. However, in some cases, stable and effective pacing can not be guaranteed, and the high current of the electric pulse can cause local discomfort to the patient, greatly limiting the application of this technology. The authors used esophageal atrial pacing method in 65 patients were electrophysiological aspects of the technology to explore the important issues. Stimulation of pulse width problems: Conventional stimulation of the heart pulse width of less than 2 milliseconds, which is based on the stimulation electrode in close contact with the myocardial tissue described in the intensity of a time curve, the pulse time increases to more than 2 milliseconds, the current intensity Almost in a completely unchanged state of stability. This experiment re-recorded the stimulation electrode placed in the esophagus, stimulate the heart when the intensity of a time curve and found that the pulse width gradually increased to 9.9 milliseconds, the current intensity gradually decreased, this