(FIT)-Module 4 Workshop 7: Electrocradiogrpahic and Electrophysiological Correlations, Atrial Fibrillation, Clinical Scenarios and Syndromes-Gerstenfeld Case 2 Answer

Video Transcription

Video Summary

The video discusses diagnosing and treating mitral annular flutter using overdrive pacing. The key indicator is linear ablation from the left inferior pulmonary vein to the mitral annulus. The method reveals a macroreentrant tachycardia, evidenced by downstream capture in the coronary sinus. Unlike focal tachycardia, the stimulus does not propagate to proximal electrodes, confirming a macroreentrant circuit. Alternative potential flutters, such as CTI or roof-dependent, are ruled out, with mitral annular flutter being identified as the correct diagnosis. Hence, this situation requires specific linear ablation in the left atrium.

Keywords

mitral annular flutter

overdrive pacing

linear ablation

macroreentrant tachycardia

left atrium