She is taken for emergency cardiac catheterization and a stent is placed in her left anterior descending artery. Two months later she presents lower extremity edema, dyspnea on exertion, and palpitations. She is diagnosed as having an exacerbation of congestive heart failure and some ventricular tachycardia is seen on telemetry monitoring. Her ECG at this time is below. What is the diagnosis on ECG?