Atrial flutter is a macro-reentrant atrial tachycardia with characteristic sawtooth flutter waves (often in II, III, aVF). 2:1 AV block yields ventricular rates near 150. Stroke risk parallels AFib — anticoagulation per guideline framing when indicated. Connect Atrial Flutter to bedside cues you will reassess first: vitals trends, work of breathing, perfusion, mentation, and pain or ischemic equivalents when relevant. NCLEX items often reward recognizing when subtle instability outweighs reassurance, then selecting nursing actions that protect airway, circulation, and neurologic status before routine tasks.