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: patient recorded as having no known allergies to drugs attending: chief complaint: code stroke major surgical or invasive procedure: none history of present illness: 84 year old woman with history of atrial fibrillation, hypertension, hyperchol who complained of a headache at 5 p.m. then at 5:45 p.m. she was sitting in a chair when her husband saw that she suddenly stopped speaking, and could not move her right side. she was brought immediately to the ed for further evaluation. she has no prior history of stroke. she was diagnosed with atrial fibrillation last and placed on coumadin. two days ago she underwent electrical cardioversion for treatment of the atrial fibrillation. she was hospitalized recently for a gastroenteritis but has not been ill within the past couple of days. no recent falls or trauma. review of systems: no fever, other details unknown but her children say she has not been sick over the past few days. past medical history: past medical history: atrial fibrillation syncopal episodes in the past hyperthyroidism hypertension hypercholesterolemia gerd social history: social history: lives with her 87 year old husband. and daughter are closely involved. family history: family history: not contributory brief hospital course: the patient was admitted to the icu and expired. medications on admission: lipitor 10 mg daily protonix 20 mg daily inderal 10 mg tid tapaxole 10 mg lotrel 2.5/10 coumadin 2 mg daily discharge medications: expired discharge disposition: expired discharge diagnosis: expired discharge condition: expired discharge instructions: expired followup instructions: expired md, procedure: continuous invasive mechanical ventilation for less than 96 consecutive hours insertion of endotracheal tube arteriography of cerebral arteries diagnoses: atrial fibrillation long-term (current) use of anticoagulants cerebral embolism with cerebral infarction 

Answer: The patient is high likely exposed to