Wren C
Department of Paediatric Cardiology, Freeman Hospital, Newcastle upon Tyne, U.K.
Eur Heart J. 1998 May;19 Suppl E:E32-6, E54-9.
Incessant tachycardias are some of the rarer forms of normal QRS tachycardias. They are usually diagnosed in infancy or childhood and often present with heart failure secondary to left ventricular dysfunction. Permanent junctional reciprocating tachycardia is a rare type of orthodromic atrioventricular re-entry. Control with drugs is possible but best long-term results are achieved with radio-frequency ablation. Congenital His bundle tachycardia is an automatic arrhythmia characterized by ventriculo-atrial dissociation on the electrocardiogram. The risk of atrio-ventricular block with radiofrequency ablation is high and long-term drug treatment is often effective. Atrial ectopic tachycardia is also automatic and may originate in the left or right atrium. Drug suppression is possible but radiofrequency ablation offers the prospect of cure. All three arrhythmias are likely to persist long term. Drug treatment with class IC or class III drugs is most likely to be effective. Rate control or arrhythmia suppression are likely to lead to improvement or normalization of left ventricular function.
无休止性心动过速是正常QRS波心动过速中较为少见的类型。它们通常在婴儿期或儿童期被诊断出来，常因左心室功能障碍继发心力衰竭。永久性交界性反复性心动过速是一种罕见的正向房室折返类型。药物控制可行，但射频消融能取得最佳的长期效果。先天性希氏束心动过速是一种自律性心律失常，心电图表现为室房分离。射频消融导致房室传导阻滞的风险较高，长期药物治疗往往有效。房性异位性心动过速也是自律性的，可能起源于左心房或右心房。药物抑制可行，但射频消融有望治愈。这三种心律失常都可能长期持续存在。使用IC类或III类药物进行药物治疗最有可能有效。控制心率或抑制心律失常可能会使左心室功能得到改善或恢复正常。
