Roberts-Thomson Kurt C, Kistler Peter M, Kalman Jonathan M
Department of Cardiology, Royal Melbourne Hospital, Melbourne, Australia.
Pacing Clin Electrophysiol. 2006 Jun;29(6):643-52. doi: 10.1111/j.1540-8159.2006.00413.x.
Atrial tachycardia (AT) may be focal or macroreentrant. In this review we will concentrate on focal AT. The diagnosis of focal AT may be made from a standard electrocardiogram (ECG); however, in some cases differentiation from other forms of supraventricular tachycardia may be difficult. Focal AT may be due to several different mechanisms, including abnormal automaticity, triggered activity, and microreentry. Focal AT does not occur randomly throughout the atria but has a characteristic anatomic distribution. In this review, we particularly focus on the clinical features, diagnosis, mechanisms, and anatomic location of focal AT.
房性心动过速(AT)可分为局灶性或大折返性。在本综述中,我们将重点关注局灶性房性心动过速。局灶性房性心动过速的诊断可通过标准心电图(ECG)做出;然而,在某些情况下,与其他形式的室上性心动过速进行鉴别可能会很困难。局灶性房性心动过速可能由几种不同的机制引起,包括异常自律性、触发活动和微折返。局灶性房性心动过速并非在心房内随机发生,而是具有特征性的解剖分布。在本综述中,我们特别关注局灶性房性心动过速的临床特征、诊断、机制和解剖位置。