Paediatrics – MCQ 54 – 13-year old girl with Menorrhagia

The coagulation profile in a 13-year old girl with Menorrhagia having von Willebrands disease is:
A. Isolated prolonged PTT with a normal PT
B. Isolated prolonged PT with a normal PTT
C. Prolongation of both PT and PTT
D. Prolongation of thrombin time

Correct answer : A. Isolated prolonged PTT with a normal PT

In VWF, there is impairment of intrinsic coagulation pathway. Hence there is isolated prolonged PTT.

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