Jaïs Pierre, Hocini Mélèze, Weerasoryia Rukshen, Macle Laurent, Scavee Christophe, Raybaud Florence, Shah Dipen C, Clémenty Jacques, Haïssaguerre Michel
Hôpital Cardiologique du Haut-Lévêque, Pessac Cedex, France.
Card Electrophysiol Rev. 2002 Dec;6(4):371-7. doi: 10.1023/a:1021124006169.
Left atrial flutters are not as common as peri-tricuspidian circuits. Their systematic study is much more recent and had greatly benefited from the use of 3 D mapping systems. Reentry has been demonstrated as being the mechanism but the circuits are not stereotypical like in the right atrium. Multiple macroreentrant circuits with one or more loops have been described as well as small re-entrant circuits. The complexity and variability of these circuits is related to the presence of zone of block, slow conduction and electrically silent areas. They create the conditions for the arrhythmia maintenance as they stabilize the circuit and prevent short circuiting. Most of the patients with left atrial flutter have an underlying structural heart disease, but their arrhythmia is amenable to curative catheter ablation.
左房扑动不如三尖瓣周围环路常见。对其进行系统研究的时间要近得多，并且极大地受益于三维标测系统的使用。折返已被证明是其发生机制，但环路并不像右心房那样具有典型性。已经描述了具有一个或多个环的多个大折返环路以及小折返环路。这些环路的复杂性和变异性与阻滞区、缓慢传导区和电静止区的存在有关。它们为心律失常的维持创造了条件，因为它们使环路稳定并防止短路。大多数左房扑动患者都有潜在的结构性心脏病，但其心律失常适合通过根治性导管消融治疗。
