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: codeine attending: addendum: pt was restarted on warafarin 3 mg po qd with a plan to check an inr in 3 days for dose adjustment. discharge disposition: extended care facility: - md procedure: other endoscopy of small intestine transfusion of packed cells diagnoses: congestive heart failure, unspecified unspecified essential hypertension acute posthemorrhagic anemia atrial fibrillation chronic or unspecified gastric ulcer with hemorrhage, without mention of obstruction hyperosmolality and/or hypernatremia 

Answer: The patient is high likely exposed to