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: penicillins attending: addendum: based on pre-op tte mrs. was treated for acute systolic heart failure w/ ef of 30%. discharge disposition: extended care facility: hospital - md procedure: single internal mammary-coronary artery bypass extracorporeal circulation auxiliary to open heart surgery coronary arteriography using two catheters left heart cardiac catheterization (aorto)coronary bypass of one coronary artery diagnoses: subendocardial infarction, initial episode of care coronary atherosclerosis of native coronary artery esophageal reflux pure hypercholesterolemia unspecified essential hypertension diabetes mellitus without mention of complication, type ii or unspecified type, not stated as uncontrolled cardiac complications, not elsewhere classified atrial fibrillation depressive disorder, not elsewhere classified surgical operation with anastomosis, bypass, or graft, with natural or artificial tissues used as implant causing abnormal patient reaction, or later complication, without mention of misadventure at time of operation obesity, unspecified acute systolic heart failure knee joint replacement 

Answer: The patient is high likely exposed to