TY - CHAP M1 - Book, Section TI - PLATELET DYSFUNCTION AND VON WILLEBRAND DISEASE A1 - Hillman, Robert S. A1 - Ault, Kenneth A. A1 - Leporrier, Michel A1 - Rinder, Henry M. PY - 2016 T2 - Hematology in Clinical Practice, 5e AB - CASE HISTORY • Part 1A 76-year-old man presents with a complaint of headache, which began several hours after a fall and has steadily worsened. His history is notable for hypertension and coronary artery disease, status post-bypass grafting 4 years prior. He denies any history of bleeding or thrombosis other than his previous coronary symptoms. Medications include a cholesterol-lowering agent, beta-blocker, and a daily aspirin. Examination is notable for a tender bruise over the left occipital region. The remainder of the examination is benign.CBC: Hemoglobin/hematocrit - 13 g/dL/39%MCV - 94 fL MCH - 31 pg MCHC - 32 g/dLRDW-CV - 11% White blood cell count - 8,500/μLPlatelet count - 310,000/μLBLOOD SMEAR MORPHOLOGYNormocytic, normochromic with no aniso- or poikilocytosis or polychromasia. White blood cells are normal and platelets are numerous with normal morphology.PT = 12.6 seconds (<14 seconds)INR = 1.1 (<1.3)PTT = 31 seconds (22–35 seconds)QuestionsGiven the risk of an intracranial hemorrhage, do these laboratory results rule out a coagulopathy?What other test(s) might be in order? SN - PB - McGraw-Hill Medical CY - New York, NY Y2 - 2024/03/28 UR - accessbiomedicalscience.mhmedical.com/content.aspx?aid=1127768420 ER -