目的 探讨多功能心脏电生理刺激记录仪的临床应用.方法 应用多功能心脏电生理刺激记录仪(DF-5A型)对1026例被检查者(包括2008年6月至2013年6月在苏州大学第一附属医院门诊、急诊及病房等就诊者),行经食管心房调搏术(TEAP),其中男性362例,年龄:15～85岁.结果 1026例被检查中,912例因“阵发性胸闷心悸不适”行TEAP,695例拟诊阵发性室上性心动过速(PSVT);217例拟诊窦房结功能不良,67例因PSVT发作,为中止PSVT;另有47例因不能配合而拒绝TEAP.695例拟诊PSVT者中,TEAP诱发并终止PSVT 278例(房室结双165例,旁道113例);64例被检查者存在房室结双径路,但未能诱发PSVT.217例拟诊窦房结功能不良者,仅20例符合窦房结功能不良,且大多为老年人.53例被检查者在检查过程中分别出现短阵房速、房扑或房颤,其他被检查者为见明显异常.结论 DF-5A型多功能心脏电生理刺激记录仪给临床医生提供了有效、安全和方便的诊疗措施.

This paper introduces the design and implementation process of a multifunctional recorder for cardiac electrophysiology stimulation based on an embedded system. The front-end circuit which is composed of a deifbrillation voltage protection circuit and an electrostatic protection circuit and high-voltage circuit which is composed of a boosted circuit of transformer-coupled and single-ended lfyback MOS switch and a high voltage regulator circuit are controlled with Darlington optocoupler switch to maintain the stable pulse output waveform. The isochronous and real-time collection, displaying and storage of 12 lead and esophageal lead electrocardiogram can be implemented through the connection between the computer and the recorder with the USB interface. The examination and recording process of cardiac electrophysiology has been optimized effectively with the recorder which has integrated various operation and analysis functions for clinician.