❤️‍🩹⚡Atrial Flutter: Quick Guide What is it? Atrial flutter (AFL) is a re-entry arrhythmia, often in the cavotricuspid isthmus (CTI). Atypical flutter can arise from other atrial regions. Rheumatic heart disease (RHD) increases risk due to atrial dilation and fibrosis. Symptoms & Complications - Palpitations, dyspnea, fatigue, or syncope. - Complications: Stroke, tachycardia-induced cardiomyopathy, heart failure. Diagnosis - ECG: Saw-tooth P waves in II, III, aVF. - Advanced Tools: TEE, EPS, or