druas
Forum Elite
Topics: 47
Posts: 339
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A 24-year-old man complains of frequent nosebleeds and bleeding gums after brushing his teeth. He denies recent use of aspirin or other nonsteroidal anti-inflammatory agents. Laboratory studies reveal a hematocrit of 41%, leukocyte count of 6000 mm3, and platelet count of 300,000/mm3. The prothrombin time is 15 seconds, activated partial thromboplastin time is 90 seconds, and the bleeding time is 11 minutes. Which of the following is the underlying mechanism of this patient’s clotting disorder?
A. Circulating antibodies to platelets
B. Decreased levels of von Willebrand factor
C. Deficiency of Hageman factor (factor XII)
D. Underproduction of all coagulation factors
E. Vitamin K deficiency
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| reet
Forum Fanatic
Topics: 152
Posts: 1,411
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ans- B - vWF decresed platelet count -normal - bleeding time -incrsed, PT- normal., PTT prolonged?????
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| sturge_weber
Forum Guru
Topics: 77
Posts: 1,042
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yes its b
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| Natasa
Forum Elite
Topics: 9
Posts: 291
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I would go with B
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| krsna
Forum Senior
Topics: 1
Posts: 211
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B.
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| docarchana
Forum Guru
Topics: 70
Posts: 515
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yes, PTT prolonged n VWD.
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