A 68-year-old woman with chronic atrial fibrillation on digoxin therapy presents with palpitations and dyspnea. Vital signs: HR 142 bpm (irregular), BP 98/62 mmHg, RR 24/min. ECG shows rapid atrial fibrillation with a ventricular rate of 140 bpm. Troponin and electrolytes are normal. Chest X-ray shows mild pulmonary edema. The patient is haemodynamically unstable. What is the most appropriate immediate next step?

See the options, answer & explanation

Sign in free to reveal the answer choices, the correct answer, the detailed explanation, and AI-powered insights for this question.