射频消融治疗房性心动过速(附六例分析)

Radiofrequency Catheter Ablation for Treatment of Atrial Tachycardia (Report of 6 Cases)

报道6例房性心动过速（AT）心电生理（EPS）检查和射频消融（RFCA）治疗的结果。6例均有反复AT发作区有心电图（ECG）记录证实。男、女各3例，4例合并器质性心脏病。AT的诊断以EPS的标准为依据。EPS检查之始，AT发作时，分别行颈动脉窦按压（CSM）及腺苷6mg静脉推注视察AT变化情况。结合激动标测与起搏标测寻找RFCA的心房靶点。6例RFCA治疗5例成功、1例失败。随访半年1例复发。结果表明：AT机制的区分不能依赖腺苷。RFCA失败及复发的原因可能与输出功率、消融的位置和基础疾病有关。

Electrophysiology study (EPS) and radio frequency current ablation (RFCA) were attempted in 6 pa-tients who had clinical episodes of atrial tachycardia (AT) with multiple ECG recordings.The diagnosis was estab-lished by EPS criteria for AT. Carotid sinus massage (CSM) and introvenous adenosine were used during AT sepa-rately. A combination of activation mapping and pace-mapping was per formed. RFCA initially success was achievedin 5 of 6 patients. One was unsuccessful. Follow up in 6 months,only one had recurrence. The probable causes ofimmediate unsuccessful RFCA and recurrent AT may include delivered power of radiofrequency energy location ofablation,or presence of disease.