Clinical meaning
Atrial fibrillation (AFib) is a supraventricular tachyarrhythmia with disorganized atrial activity and an irregularly irregular ventricular response when conduction through the AV node is variable. Rate control aims to keep the ventricular response in a range that preserves diastolic filling, coronary perfusion, and symptom tolerance while you address triggers (pain, infection, alcohol, hyperthyroidism, HF decompensation, PE). Stroke risk is separate from rate control: many clients need anticoagulation per CHA₂DS₂-VASc-style reasoning on boards—follow the stem’s risk story. Nursing focus is continuous assessment (rhythm, rate, BP, perfusion, bleeding), safe medication administration (beta blockers, nondihydropyridine calcium channel blockers, digoxin themes), and recognizing unstable tachycardia that needs electrical cardioversion pathways rather than “wait and see.” Pair with heart failure priorities, ACS, and thyroid emergencies