Atrial fibrillation
58 years old woman arrived in the emergency department complaining of sudden onset of palpations, lightheadedness, and shortness of breath. These symptoms began approximately 2 hours previously. On examination, her blood pressure is 95/70 mmHg, and heart rate is 140 beats /min .An ECG demonstrates atrial fibrillation. The physical examination is otherwise unremarkable. Explain why [...]
