Subjects will be followed for adverse intraoperative cardiovascular events that are defined in two ways: 1) Proportion of total anesthesia duration that mean arterial pressure (MAP) <55 or >110 and 2) Proportion of total anesthesia duration that heart rate (HR) < 50 or >100. Adverse postoperative cardiovascular events will be defined in two ways: 1) Increase in the postoperative troponin value compared to the patient's baseline preoperative troponin value and 2) Postoperative myocardial infarction, stroke, or death.