A 67-year-old man presents to the cardiac clinic for a routine follow-up. He suffered from an acute myocardial infarction 3 months ago, but he reports a satisfactory recovery, free from chest pain or dyspnea during moderate exercise:

• Sinus rhythm with Mobitz I second degree AV block
• Ventricular rate 84/min
• Septal infarction, age undetermined
• ST and T wave abnormality, consider lateral ischemia