Review Question - QID 210852

A 60-year-old man status-post emergent laparoscopic appendectomy for a ruptured appendix is brought to the attention of the on-call surgery resident by his nurse for persistent tachycardia. Medical history is significant for hypertension, managed at home with lisinopril. The surgery was uneventful, and the patient had been given fentanyl about 30 minutes ago for pain management. The surgery resident suspects insufficient hydration and orders a bolus of normal saline. Thirty minutes later, a code is activated for ventricular fibrillation for this patient. After 3 minutes of resuscitation, the patient has return of spontaneous circulation. Bedside echocardiogram reveals dyskinetic wall movement. A 12-lead electrocardiogram is shown in Figure A. After an extended 2-week hospital stay that was free from further complications, the patient is prepared for discharge. At this time, the patient's temperature is 98.6°F (37.0°C), blood pressure is 145/70 mmHg, pulse is 90/min, and respirations are 18/min. Which of the following is the most likely complication on which the patient should be educated at this time?