Left Atrial Roof Line

A prospective randomized study.

Left atrial roof line.

As a result of greater extension of atrial fibrosis 5 for this reason the creation of additional linear lesions in the left atrium la has been proposed. Techniques evaluation and consequences of linear block at the left atrial roof in paroxysmal atrial fibrillation. The left atrial line enters from the left superior pulmonary vein and exits the far side of the chest. The clinical at was a dual loop at with left atrial la roof dependent and anterior macro re entrant circuits and terminated by an la roof and left superior pv mitral annulus linear ablation.

A left atrial isthmus was first described by luria et al. A left atrial la line monitors left atrial pressures acting as a surrogate for left ventricular function preload and afterload. Of the several proposed linear lesions only mitral isthmus and roof line ablation remain commonly performed as an adjunct to pulmonary vein isolation in the treatment of atrial fibrillation 2 3. Surface electrocardiographic criteria to differentiate it from mitral annular ma flutters are lacking.

That is doctors may make a lesion line along the roof of the left atrium and then pace or use a mapping catheter to determine whether conduction has been stopped. Isolation of the pulmonary veins pvs for the treatment of atrial fibrillation af is often supplemented with linear lesions within the left atrium la. Another at with a tachycardia cycle length tcl of 240 ms was then induced. An irrigated ablation catheter is introduced with its tip oriented toward the la roof.

They described the phenomenon of intra atrial conduction block in a subset of patients undergoing ablation for left lateral accessory pathways. However there are conflicting data on the effects of creating a roof line rl joining the superior pvs in paroxysmal atrial fibrillation paf. Technique for ablation of the left atrial roof the la roofline is a line of lesions joining the left and right superior pvs. It is sometimes called sequential ablation because the additional ablation lines are performed in a specified order.

Left atrial la roof dependent flutter is a common macroreentrant la tachycardia that involves the la roof and typically spins around ipsilateral pulmonary veins pvs. Hocini m jais p sanders p takahashi y rotter m rostock t hsu lf sacher f reuter s clementy j haissaguerre m. The left atrial line is a single lumen catheter unlike the right atrial line which is double lumen.