A 72-year-old man comes to the emergency room with chest pain. ECG demonstrates ST-segment elevation in leads II,III, and aVF on an electrocardiogram. Suspecting a myocardial infarction, you admit him in the hospital. After a few minutes, the patient reports worsening chest pain, shortness of breath and lightheadedness. On electrocardiogram, you notice independent atrial and ventricular activity with no relation between the P waves and the QRS complexes. Which of the following is the most likely location of the patient’s infarct?
