tailieunhanh - Essential Concepts of Electrophysiology through Case Studies-Intracardiac EGMs 2

(BQ) Over 60 cases with a focus on intracardiac EGMs are presented as board exam cases and questions. Tracings are framed by a question, followed by annotated tracings, and a discussion of the correct and potential answers. Cases present a full range of difficulty from simple to advanced. | Atrial Fibrillation AF Case Question A 67-year-old man underwent catheter ablation for drug-refractory atrial fibrillation. Following circumferential ablation around both sets of pulmonary veins pacing was performed from the circular mapping catheter to assess for exit block. The pacing output is decreased over the course of the recording. Catheter position is shown in the RAO and LAO projections. What should be done next A Additional ablation to isolate the left pulmonary veins B Additional ablation to isolate the right pulmonary veins C Additional ablation within the left atrial appendage D No further ablation is needed .

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