Let's review some key differences between atrial fibrillation vs. atrial flutter 💓 AFib 🩺: ⚡ Atria receive chaotic, disorganized impulses ⚡ Atrial rate: >400 beats/min (too fast to count!) ⚡ Irregularly irregular rhythm (R-R intervals vary) ⚡ No visible P waves ⚡ Ventricular response rate varies AFlutter 🩺: ⚡ Organized electrical activity ⚡ Atrial rate: 200-350 beats/min ⚡ Regular atrial rhythm (AV node conducts every 2-3 impulses) ⚡ No P waves, but look for the saw-tooth flutter pattern 👉 T

Atrial Flutter : Conduction & Ventricular Response Atrial flutter is a macro-reentrant atrial tachycardia with a characteristic sawtooth pattern on ECG, most visible in leads II, III, and aVF. The atrial rate is typically regular and ranges from 250-350 bpm. The ventricular response is determined by the refractory period of the atrioventricular (AV) node, leading to fixed conduction ratios. 🔹 2:1 Block: Most common; ventricular rate ~150 bpm 🔹4:1 Block: Target with pharmacologic rate control �