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: history of present illness: briefly, this is an 81 year old male with a history of diabetes, chronic renal insufficiency, coronary artery disease, status post myocardial infarction with cardiomyopathy who was transferred from an outside hospital with a nonhealing left heel ulcer. magnetic resonance angiography showed negative except for some left popliteal artery stenosis which was status post angioplasty with a one vessel runoff. he had undergone an attempted bypass graft on , however, the procedure was aborted due to lack of conduit. therefore a below the knee amputation was planned on being performed. past medical history: as above. medications on admission: the patient was transferred from an outside hospital. physical examination: afebrile, vital signs stable. the patient had a nonhealing ulcer of his left foot with nondopplerable pulses. hospital course: the patient was taken to the operating room on where a below the knee amputation was performed. the patient was doing well throughout the operation, however, upon awakening from the anesthesia, the patient became hypotensive and an acls protocol was instituted. however, the patient did not regain his vital signs and he was pronounced dead in the operating room on the operating room table on . the patient was pronounced dead and the family was informed. , m.d. dictated by: medquist36 procedure: combined right and left heart cardiac catheterization coronary arteriography using two catheters arteriography of femoral and other lower extremity arteries angiocardiography of right heart structures other amputation below knee incision of vessel, lower limb veins injection or infusion of nesiritide combined right and left heart cardiac catheterization coronary arteriography using two catheters arteriography of femoral and other lower extremity arteries angiocardiography of right heart structures other amputation below knee incision of vessel, lower limb veins injection or infusion of nesiritide diagnoses: congestive heart failure, unspecified diabetes with neurological manifestations, type ii or unspecified type, not stated as uncontrolled atherosclerosis of native arteries of the extremities with gangrene diseases of tricuspid valve diabetes with renal manifestations, type ii or unspecified type, not stated as uncontrolled diabetes with ophthalmic manifestations, type ii or unspecified type, not stated as uncontrolled cellulitis and abscess of foot, except toes ulcer of heel and midfoot acute osteomyelitis, ankle and foot 

Answer: The patient is high likely exposed to