Ventricular arrhythmias (VA) are frequently encountered in patients with structural heart disease and are an important cause of morbidity and sudden cardiac death (SCD). Most VAs in patients with ventricular scars are caused by reentry, which is facilitated by barriers of functional or fixed conduction block and zones of slow conduction. Radiofrequency catheter ablation (RFCA) targets the substrate and has the potential to prevent ventricular tachycardia (VT) recurrence. The nature and cause of ventricular scars and the prevalence and characteristics of VTs vary widely according to the underlying heart disease and surgical interventions. This article focuses on the substrate of VA and RFCA for VT in patients with surgically corrected congenital heart disease (CHD) and infiltrative heart disease.
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机译：室性心律失常（VA）常见于结构性心脏病患者，是发病和心源性猝死（SCD）的重要原因。心室瘢痕患者的大多数 VA 是由折返引起的，功能性或固定传导阻滞的屏障和慢传导区促进了折返。射频导管消融术 （RFCA） 以基质为靶向，具有预防室性心动过速 （VT） 复发的潜力。心室瘢痕的性质和原因以及心室过失的患病率和特征因潜在的心脏病和手术干预而有很大差异。本文重点介绍手术矫正先天性心脏病 （CHD） 和浸润性心脏病患者 VT 的 VA 和 RFCA 基质。
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