Abstract
BACKGROUND: The diagnosis of atrial tachyarrhythmias might be challenging at times. Assessing Doppler flow patterns of the left atrial appendage (LAA) using echocardiography, mainly transesophageal echocardiography, represents a valuable tool for establishing the diagnosis of atrial tachyarrhythmias, especially when the diagnosis remains unclear. RESULT: Despite its effectiveness and simplicity, this technique is often underused in routine clinical practice. CONCLUSION: This paper aims to underscore the effectiveness of using LAA flow in conjunction with electrocardiograms for diagnosing atrial tachyarrhythmias in complex cases, particularly atrial flutter, and to encourage physicians to adopt this approach to better identify patients at risk for the recurrence of atrial tachyarrhythmias and LAA thrombus formation.