Radiofrequency Catheter Ablation Treatment31Cases Of Tachycardiomyopathy Clinical Curative Effect Analysis

Objective: The purpose of this study is to analysis the clinicalcharacteristics of tachycardiomyopathy(TCMP) and investigate the clinicalefficacy of tachycardiomyopathy by treating with radiofrequency catheterablation (RFCA).Methods: By using retrospective analysis, we analyse31case of TCMPpatients (including22males and9females, age51±16.5years) whounderwent RFCA. All of them have relapse of tachycardia in their history.Eliminate other organic heart diseases by means of history taking, physicalexamination and investigations. All cases have already had the result of Left ventricular end diastolic dimension (LVEDD), Left ventricular end systolicdiameter (LVESD), Left atrial diameter (LAD) and Left ventricular ejectionfraction (LVEF) by echocardiography and the results of cardiothoracic ratio bychest X-ray. They also had done intracardiac electrophysiologic study andRFCA. These indexes have been surveyed again after16d~28m (7±5.6) months,and compared with the indexes before RFCA.Result:29cases of patients were with a successful ablation, but one casewas recurrence after RFCA (significantly reduced in frequency and time of onsetthan pre-ablation), and one case with atrial tachycardia failed in RFCA, who wasconsider as Self-discipline atrial tachycardia and used amiodarone to controlheart rate. The effect was not good enough and this case was died in16days.The change of LVEDD with TCMP correlates positively with the fastest heartrate during tachycardia and with the course of disease(r=0.540, r=0.591, P<0.05).After three months of successful RFCA, cardiothoracic ratio (0.60±0.14vs.0.49±0.09,P<0.05), LVESD [(44±12)mm vs.(30±11)mm， P<0.05],LVEDD[(61±15)mm vs.(50±9)mm，P<0.05] and LAD [(46±13)mm vs.(36±8)mm，P<0.05] of the patients are significantly reduced and LVEF [(45.6±12.4)%vs.(61.7±7.5)%，P<0.05] are significantly increased compared withpre-ablative condition, and cardiac function was significantly improved.Conclusion:①Tachyarrhythmia can seriously damage the heart structureand lead to cardiac dysfunction. Although the etiology of some arrhythmia wasunknown, the sustained and repeated episodes of tachycardia can cause TCMP.②After the termination of the tachycardia, TCMP can have differentdegrees of correction, like cardiac structure and function were significantlyimproved.③RFCA is an effective and safety way to improve heart function of the patients with TCMP.