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: latex attending: addendum: patient was cleared for discharge, and 1 hour prior to being discharged developed atrial fibrillation with rapid ventricular response to the 140s. he required a ditiazem gtt, and his diltiazem has been increased to 90 mg qid. his discharge is postponed until his heart rate is better controlled. discharge disposition: extended care facility: of md, procedure: other electric countershock of heart diagnoses: congestive heart failure, unspecified unspecified essential hypertension diabetes mellitus without mention of complication, type ii or unspecified type, not stated as uncontrolled atrial fibrillation intracerebral hemorrhage pneumonitis due to inhalation of food or vomitus long-term (current) use of anticoagulants other pulmonary embolism and infarction 

Answer: The patient is high likely exposed to