05-28-2010, 06:26 PM
A 26-year-old man is referred to his physician by his dentist prior to extraction of an impacted wisdom tooth. There was prolonged bleeding following the first extraction one week ago. The patient has no complaints other than constant pain from his impacted tooth. His laboratory test results are as follows:WBC count = 8000/mm3Hemoglobin = 15.4 g/dLPlatelet count = 190,000/mm3Platelet morphology = normalProthrombin time (PT) = normalActivated partial thromboplastin time (APTT) = normalBleeding time = prolongedFactor IX level = normalWhich of the following is the most likely cause of these findings?
A. Aspirin use
B. Bernard-Soulier disease
C. Factor VIII deficiency
D. Vitamin K deficiency
E. von Willebrand™s disease
A. Aspirin use
B. Bernard-Soulier disease
C. Factor VIII deficiency
D. Vitamin K deficiency
E. von Willebrand™s disease