Left Atrial Roof Vein

Pulmonary vein pv reconnection is mainly due to nontransmural ablation and is considered a major determinant of atrial fibrillation af recurrence after pulmonary vein isolation pvi several technologies have been developed in an attempt to improve radiofrequency rf lesion transmurality and pvi durability such as irrigated tip ablation catheters and real time contact.

Left atrial roof vein.

Isolation of the pulmonary veins pvs for the treatment of atrial fibrillation af is often supplemented with linear lesions within the left atrium la. Roles of the left atrial roof and pulmonary veins in the anatomic substrate for persistent atrial fibrillation and ablation in a canine model. Therefore it may have a myocardial sleeve as same as general pvs. Ethanol infusion of 5 ml into the marshall vein was performed prior to pulmonary vein isolation while locating the advisortm hd grid mapping catheter abbott.

Catheter ablation therapy for persistent atrial fibrillation af typically includes pulmonary vein isolation pvi and may include additional ablation lesions that target patient specific anatomical electrical or structural features. The ablation strategy consisted of liner ablations including the roof bottom and mitral isthmus as well as pulmonary vein isolation. Pre operative three dimensional computed tomography revealed a unique left atrial la roof vein. J am coll cardiol.

In this case however the la roof vein had electrical activity and recorded local spontaneous firing suggesting that it can be the trigger of af. During cardiac development the oblique vein of the left atrium vein of marshall passes from a superior aspect onto the epicardial surface of the left atrium in between the left atrial appendage and the left superior pulmonary vein to descend along the posterolateral atrial wall to join the coronary sinus figure 2 b. However there are conflicting data on the effects of creating a roof line rl joining the superior pvs in paroxysmal atrial fibrillation paf. Electrophysiological findings showed expansion of the myocardial sleeve and local firing in the la.

This vein ran from the right superior lobe of the lung to the left side of la roof. A 64 year old man diagnosed with persistent atrial fibrillation underwent a first ablation process.