Abstract #1436

Post-ablation Changes in Left Atrial Hemodynamics and Volume in Patients with Atrial Fibrillation

David Dushfunian¹, Anthony Maroun¹, Justin Baraboo¹, Maurice Pradella^1,2, Daniel C. Lee^1,3, Philip Greenland⁴, Rod Passman³, Daniel Kim¹, and Michael Markl¹

¹Department of Radiology, Northwestern University Feinberg School of Medicine, Chicago, IL, United States, ²Department of Radiology, University of Basel, Basel, Switzerland, ³Division of Cardiology, Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL, United States, ⁴Department of Preventive Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL, United States

Synopsis

Keywords: Flow, Velocity & Flow

Atrial fibrillation (AF) leads to detrimental changes in the left atrial (LA) and left atrial appendage’s (LAA) hemodynamics and volumes. When indicated, AF ablation is used to reduce AF burden. We recruited 17 post-ablation patients, 10 of whom had no documented AF recurrences. 4D flow MRI was acquired, immediately before and 6-12months after ablation, and quantified for LA and LAA stasis, volume, and peak velocities. Our findings support the notion that restoration of sinus rhythm corrects the deleterious changes of AF.

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