A 60-year-old man was brought to the Emergency Department for sudden onset of a headache and subsequent drowsiness that had developed two hours before. The patient's Glasgow Coma scale was measured at 12. A head CT was subsequently performed, which revealed supratentorial intracerebral hemorrhage with no evidence of intraventricular hemorrhage, epidural or subdural hematoma, or underlying aneurysm or arteriovenous malformation. His platelet was at 215 x 109/L and INR at 1.1 at the time of the visit. He had a past medical history significant for acute myocardial infarction six months ago and has been taking aspirin daily since that time. He did not have a history of coagulopathy.
Hee Eun Lee, M.D., Ph.D.
Resident, Anatomic and Clinical Pathology
Justin Kreuter, M.D.
Consultant, Division of Transfusion Medicine
Instructor in Laboratory Medicine and Pathology
Mayo Clinic College of Medicine
Follow him on Twitter: @KreuterMD