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NBME 18 Answers

nbme18/Block 1/Question#4 (reveal difficulty score)
A 14-year-old girl is brought to the ...
von Willebrand disease ๐Ÿ” / ๐Ÿ“บ / ๐ŸŒณ / ๐Ÿ“–
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prolonged bleeding time + prolonged PT = von willebrand disease.

Extra evidence = Autosomal dominant (as we know father also had the same problems. Thus, it's not the hemophilias, as those are X-recessive, and usually daughters are just carriers in those cases)

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okokok1  The PT isn't prolonged, it is the PTT. The PTT is prolonged because vWF carries/protects factor VIII which is part of the PTT pathway. +8
ih8payingfordis  FA 2019 pg 420 +



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