Consider the following medical report that includes the patient's historical health records. Use it to predict the disease that the patient is high likely exposed to. 

 Medical Report: allergies: no known allergies / adverse drug reactions attending: addendum: lopressor dose increased 50mg po tid discharge disposition: home with service facility: vna md procedure: (aorto)coronary bypass of three coronary arteries single internal mammary-coronary artery bypass extracorporeal circulation auxiliary to open heart surgery diagnoses: other iatrogenic hypotension coronary atherosclerosis of native coronary artery esophageal reflux unspecified essential hypertension diabetes mellitus without mention of complication, type ii or unspecified type, not stated as uncontrolled other and unspecified hyperlipidemia other and unspecified angina pectoris old myocardial infarction 

Answer: The patient is high likely exposed to